USER'S GUIDE Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT330 M210566EN-K
PUBLISHED BY Vaisala Oyj P.O. Box 26 FI-00421 Helsinki Finland Phone (int.): +358 9 8949 1 Fax: +358 9 8949 2227 Visit our Internet pages at http://www.vaisala.com/ © Vaisala 2013 No part of this manual may be reproduced, published or publicly displayed in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be modified, translated, adapted, sold or disclosed to a third party without prior written permission of the copyright holder.
_________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION .......................................................................... 11 About This Manual ................................................................. 11 Contents of This Manual ..................................................... 11 Version Information ............................................................. 12 Documentation Conventions .......................
User's Guide _______________________________________________________________________ General Instructions for Probes with a Cable ...................... 41 HMT333 for Ducts and Tight Spaces .................................. 43 HMT334 for High Pressure and Vacuum Applications ........ 43 HMT335 for High Temperatures .......................................... 45 HMT337 for High Humidity Applications.............................. 46 Temperature Probe (Optional) .......................................
_________________________________________________________________________________ Using Serial Line ............................................................ 85 Wireless LAN Configuration ................................................ 86 Using Display/Keypad .................................................... 87 Using Serial Line ............................................................ 88 Communication Protocol .....................................................
User's Guide _______________________________________________________________________ INTV ............................................................................. 115 SDELAY ....................................................................... 115 ECHO ........................................................................... 115 Data Recording ..................................................................... 116 Selecting Data Recording Quantities ................................ 116 DSEL .....
_________________________________________________________________________________ Using Display/Keypad (Optional) ...................................... 144 Using Serial Line ............................................................... 146 Diagnostic Modbus Counters ............................................. 147 Viewing Counters Using Display/Keypad .......................... 147 Viewing Counters Using Service Port ............................... 148 Disabling Modbus ..................................
User's Guide _______________________________________________________________________ Accuracies of Calculated Variables ................................... 171 Accuracy of Dewpoint Temperature °C ........................ 171 Accuracy of Mixing Ratio g/kg (Ambient Pressure 1013 mbar) ............................................................................ 171 Accuracy of Wet Bulb Temperature °C ........................ 172 Accuracy of Absolute Humidity g/m³ ............................
_________________________________________________________________________________ 16-Bit Integer Format ................................................... 201 Measurement Data (Read-Only) ....................................... 202 Status Registers (Read-Only) ........................................... 202 Configuration Registers ..................................................... 203 Exception Status Outputs ................................................... 204 Diagnostic Sub-Functions ..............
User's Guide _______________________________________________________________________ List of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Figure 42
_________________________________________________________________________________ Figure 53 Figure 54 Figure 55 Figure 56 Figure 57 Figure 58 Figure 59 Figure 60 Figure 61 Figure 62 Figure 63 Figure 64 Figure 65 Figure 66 Figure 67 Figure 68 Figure 69 Figure 70 Figure 71 Figure 72 Figure 73 Figure 74 Figure 75 Figure 76 Figure 77 Figure 78 Figure 79 Figure 80 Figure 81 Figure 82 Figure 83 Figure 84 Figure 85 Figure 86 Figure 87 Figure 88 Figure 89 Figure 90 Figure 91 Figure 92 Figure 93 Figure 94 Figure 95
User's Guide _______________________________________________________________________ List of Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 Table 37 Table 38 Table 39 Table 40 Table 41 Table 42 Table 43 Table 44 Table 45 Table 46 Table
Chapter 1 _________________________________________________________ General Information CHAPTER 1 GENERAL INFORMATION This chapter provides general notes for the manual and the product. About This Manual This manual provides information for installing, operating, and maintaining Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT330.
User's Guide _______________________________________________________________________ Version Information Table 1 Manual Code M210566EN-K M210566EN-J M210566EN-I Manual Revisions Description December 2013. This manual. Applicable from transmitter software version 5.14 onward. Added description of VHP filter option. Added new command descriptions: ALSEL, AOVER, CON, DSEND, MODS, RGLIMIT, RHLIMIT, and MPC (multipoint RH calibration). Updated FILT command description. Various small corrections.
Chapter 1 _________________________________________________________ General Information Safety The Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT330 delivered to you has been tested for safety and approved as shipped from the factory. Note the following precautions: WARNING Ground the product, and verify outdoor installation grounding periodically to minimize shock hazard. CAUTION Do not modify the unit.
User's Guide _______________________________________________________________________ Recycling Recycle all applicable material. Dispose of the unit according to statutory regulations. Do not dispose of with regular household refuse.
Chapter 1 _________________________________________________________ General Information DNV Type Approval The Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT330 is found to comply with Det Norske Veritas' Rules for Classification of Ships, High Speed & Light Craft and Det Norske Veritas' Offshore standards. Applicable tests carried out according to Standard for Certification No. 2.4, April 2006.
User's Guide _______________________________________________________________________ Transmitters with LAN or WLAN Interface This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
Chapter 1 _________________________________________________________ General Information Patent Notice The Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT330 is protected by, for example, the following patents and their corresponding national rights: Finnish patents 98861 and 99164, French patents 6650303 and 9504397, German patents 69418174 and 19513274, Japanese patents 3585973 and 2801156, UK patents 0665303 and 2288465, and U.S. patent 5607564.
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Chapter 2 ___________________________________________________________ Product Overview CHAPTER 2 PRODUCT OVERVIEW This chapter introduces the features, advantages, and the product nomenclature of the Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT330. Introduction to HMT330 The HMT330 transmitter provides reliable humidity measurement in a wide range of applications. Analog outputs can be chosen between current and voltage signals.
User's Guide _______________________________________________________________________ Basic Features and Options - Several probes for various applications User-friendly display and keypad interface (optional) Calculated output quantities available Different probe mounting kits, sensor protection options and probe cable lengths Transmitter mounting kits for multiple installation purposes Chemical purge for applications where interfering chemicals in the measuring environment pose a risk Warmed probe and sen
Chapter 2 ___________________________________________________________ Product Overview Structure of the Transmitter 1104-001 Figure 1 Transmitter Body The following numbers refer to Figure 1 above: 1 2 = = 3 4 5 6 = = = = Signal + powering cable gland Cable gland for optional module, or WLAN antenna connector Cable gland for optional module or AC mains cable Cover screw (4 pcs) Display with keypad (optional) Cover LED VAISALA ________________________________________________________________________
User's Guide _______________________________________________________________________ 0508-010 Figure 2 Inside the Transmitter The following numbers refer to Figure 2 above: 1 2 3 4 = = = = 5 6 7 8 9 10 11 = = = = = = = Service port (RS-232) DIP switches for analog output settings Power supply and signal wiring screw terminals Relay, data logger, RS-422/485, LAN, or WLAN module (optional) Grounding connector Power supply module (optional) Relay, data logger, or analog output module (optional) Humidit
Chapter 2 ___________________________________________________________ Product Overview Probe Options The HMT331 is intended for demanding wall-mounted applications. The standard version has a fixed probe. 1102-025 Figure 3 HMT331 Fixed Probe The HMT331 short cable probe is a special version for use with the WLAN module and when LAN module and power supply module are simultaneously installed. It has the HMT333 probe on a short cable (21 cm), and a mounting plate with a probe holder.
User's Guide _______________________________________________________________________ 0911-066 Figure 5 Probe Options The following numbers refer to Figure 5: 1 2 = = 3 = 4 = 5 = HMT333 for ducts and tight spaces HMT334 for high pressure and vacuum applications (up to 100 bars) HMT335 for high temperatures (up to 180 ºC, vapor tight) *) Flange available as an option HMT337 for high humidity applications (optional warmed probe) HMT338 for pressurized pipelines (up to 40 bar) For probe cable lengt
Chapter 2 ___________________________________________________________ Product Overview Warmed Probe HMT337 Temperature difference between the probe and external environment can cause a risk of condensation on the sensor. A wet probe cannot observe the actual humidity in the ambient air. If the condensed water is contaminated, the life span of the probe may shorten and calibration may change.
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Chapter 3 ________________________________________________________________ Installation CHAPTER 3 INSTALLATION This chapter provides you with information that is intended to help you install the product. Mounting the Housing The housing can be mounted either without the mounting plate or with optional mounting plates. Standard Mounting without Mounting Plate Mount the housing by attaching the transmitter to a wall with 4 screws, for example, M6 (not provided).
User's Guide _______________________________________________________________________ Wall Mounting with Wall Mounting Kit When mounting with wall mounting kit the mounting plate (Vaisala order code 214829) can be installed directly on wall or onto a standard wall box (also US junction box). When wiring through back wall, remove the plastic plug from the wiring hole in the transmitter before mounting.
Chapter 3 ________________________________________________________________ Installation The HMT331 short cable probe is designed to be wall mounted with the probe holder plate (Vaisala order code 226252). The probe holder plate is similar to the standard mounting plate, except for the probe holder at the bottom.
User's Guide _______________________________________________________________________ Mounting with DIN Rail Installation Kit DIN rail installation kit includes a wall mounting kit, 2 clip-fasteners and 2 screws M4 × 10 DIN 7985 (Vaisala order code: 215094). 1. Attach two spring holders to the plastic mounting plate by using the screws provided in the installation kit. Attach the HMT330 to the plastic mounting plate with 4 screws (provided).
Chapter 3 ________________________________________________________________ Installation 0503-007 Figure 12 Horizontal Pole The following number refers to Figure 12 above: 1 = Mounting nuts M8 (4 pcs) Metal mounting plate is included in rain shield with installation kit and installation kit for pole or pipeline.
User's Guide _______________________________________________________________________ 0509-151 Figure 14 Dimensions of the Metal Mounting Plate (mm/inch) Mounting Rain Shield with Installation Kit The rain shield is highly recommended for outdoor installations, especially for transmitters with the display/keypad option.
Chapter 3 ________________________________________________________________ Installation Panel Mounting Frame To enable a neat and dirt free embedded installation of the transmitter, a panel mounting frame is available as an option (Vaisala order code: 216038). The frame is a thin, flexible plastic frame for the transmitter, with adhesive tape on one side. The frame is used to hide any rough edges of the installation hole, and provide a more finished look.
User's Guide _______________________________________________________________________ 0804-083 Figure 17 Panel Mounting Dimensions (mm/inch) Wiring Cable Bushings A single electrical cable with screen and three to ten wires is recommended for power and analog/serial connections. The cable diameter should be 8 ... 11 mm. The number of cable bushings depends on the transmitter options.
Chapter 3 ________________________________________________________________ Installation NOTE When there is high electric noise level (for example, near a powerful electric motor) in the operating environment it is recommended to use shielded cable or take care that the signal cables are separated from other cables. Grounding the Cables Ground the screen of the electrical cable properly to achieve the best possible EMC performance.
User's Guide _______________________________________________________________________ Refer to Figure 19 on page 35 when performing the procedure below. 1. 2. 3. 4. 5. 6. 7. 8. Cut back outer sheath to desired length. Cut back screen braiding or screen foil to dimension X. Push the domed cap nut (item 1) and the seal insert with contact socket of the gland (item 2+3) onto the cable as shown in the diagram. Bend over the screen braiding or screen foil by about 90º (item 4).
Chapter 3 ________________________________________________________________ Installation Signal and Power Supply Wiring When connecting the transmitter with 8-pin connector, see section 8-Pin Connector on page 66. When wiring the power supply module, see section Power Supply Module on page 49. 0506-028 Figure 20 Screw Terminal Block on Motherboard The following numbers refer to Figure 20 above: 1 2 3 WARNING = = = Power supply terminals 10 ...
User's Guide _______________________________________________________________________ 5. 6. 7. Connect the power supply wires to the connectors: POWER 10 ... 35V+ 24V~ (+) and (-) terminals. If you are using 24 VAC power supply, see the note below before connecting the supply wires. Turn on the power. The indicator LED on the cover is lit continuously during normal operation. Close the cover and fasten the cover screws. The transmitter is ready for use.
Chapter 3 ________________________________________________________________ Installation 0703-041 Figure 21 Connections to 24 VAC Power Supply VAISALA ________________________________________________________________________ 39
User's Guide _______________________________________________________________________ Probe Mounting In humidity measurement and especially in calibration it is essential that temperature of the probe and measuring environment is the same. Even a small difference in temperature between the environment and the probe causes an error. As the curve below shows, if the temperature is +20 °C and the relative humidity 100 %RH, a difference of ±1 °C between the environment and the probe causes an error of ±6 %RH.
Chapter 3 ________________________________________________________________ Installation General Instructions for Probes with a Cable Mount the probes with a cable horizontally; this way, any water condensing on the tube cannot flow onto the sensor. 0507-024 Figure 23 Horizontal Mounting of Probe The following numbers refer to Figure 23 above: 1 2 3 4 = = = = To be sealed To be insulated Insulate the cable Let the cable hang loosely. This prevents condensed water running to the probe along the cable.
User's Guide _______________________________________________________________________ When there is no alternative but to install the probe in the process vertically, the point of entry must be carefully insulated. The cable must also be allowed to hang loosely as this prevents any condensed water from running onto the probe along the cable.
Chapter 3 ________________________________________________________________ Installation HMT333 for Ducts and Tight Spaces The HMT333 is a small size (ø = 12mm) general-purpose probe suitable for ducts and channels with the installation kit available from Vaisala. The HMT333 provides for two measuring range options. The first probe version is equipped with a flexible cable and can be used when measuring in environments up to 80 ºC. The second version is suitable for measuring in environments up to 120 ºC.
User's Guide _______________________________________________________________________ 0506-029 Figure 25 HMT344 Probe The following numbers refer to Figure 25 above: 1 2 3 4 5 5. = = = = = Tightening cone Nut Fitting screw, M22x1.5 or NPT 1/2" Sealing washer Probe; Ø12 mm Tighten the nut a further 30º (1/12) turn or if you have a torque wrench tighten it with a torque of 80 ± 10 Nm (60 ± 7 ft-lbs).
Chapter 3 ________________________________________________________________ Installation 0503-033 Figure 27 Cleaning of Tightening Cone The following numbers refer to Figure 27 above: 1 2 3 4 = = = = Fitting screw Sealing washer Tightening cone Clean cotton stick CAUTION In pressurized processes it is essential to tighten the supporting nuts and screws very carefully to prevent loosening of the probe by the action of pressure.
User's Guide _______________________________________________________________________ HMT337 for High Humidity Applications The HMT337 is designed for environments where relative humidity is very high, near saturation. The warmed probe prevents the saturation of the sensor. An additional temperature probe is also available.
Chapter 3 ________________________________________________________________ Installation 0508-077 Figure 28 HMT338 Probe The following numbers refer to Figure 28 above: 1 2 = = Clasp nut, 24 mm hex nut Fitting body, 27 mm hex head The following two fitting body options are available: - Fitting Body ISO1/2 solid structure - Fitting Body NPT1/2 solid structure Table 5 Probe type Standard Optional HMT338 Probe Dimensions Probe Dimension 178 mm 400 mm Adjustment Range 120 mm 340 mm 0507-025 Figure 29
User's Guide _______________________________________________________________________ Tightening the Clasp Nut 1. Adjust the probe to a suitable depth according to the type of installation. Tighten the clasp nut first manually. Mark the fitting screw and the clasp nut. Tighten the nut a further 50 -60º (ca. 1/6 turn) with a wrench. If you have suitable torque wrench, tighten the nut to max 45 ± 5 Nm (33 ± 4 ft-lbs). 2. 3. 4.
Chapter 3 ________________________________________________________________ Installation NOTE When installed in a process with a pressure differing from normal atmospheric pressure, please enter the pressure value of the process (in hPa or mbar) into the transmitter memory. You can enter the value using the display/keypad option, using the serial line (see section PRES and XPRES on page 104), or using the Modbus protocol (see Configuration Registers on page 203).
User's Guide _______________________________________________________________________ Installation 1. 2. 3. 4. 5. 6. 7. Disconnect the power and open the transmitter cover. Remove the protective plug from the cable gland and thread the wires. In case the power supply module is installed in the factory, continue with the step 5. Attach the power module to the bottom of the housing with four screws. See the position in Figure 2 on page 22.
Chapter 3 ________________________________________________________________ Installation Warnings Dieses Produkt entspricht der Niederspannungsrichtlinie (2006/95/EWG). - Das Netzmodul darf nur von einem dazu befugten Elektriker angeschlossen werden. - Trennen Sie das Netzmodul nicht vom Messwertgeber, wenn der Strom eingeschaltet ist. - Verbinden Sie das Netzmodul nur mit der Spannungsquelle, wenn es im Messwertgeber HMT330 montiert ist. - Das Erdungskabel muss zum Schutz immer angeschlossen sein.
User's Guide _______________________________________________________________________ Dette produkt er i overensstemmelse med direktivet om lavspænding (2006/95/EØS). - Netstrømskoblingen til må kun tilsluttes strømforsyningsmodulet af en autoriseret elinstallatør - Strømforsyningsmodulet må ikke løsgøres fra senderen, mens spændingen er sluttet til.
Chapter 3 ________________________________________________________________ Installation Šis produktas atitinka direktyvą dėl žemos įtampos prietaisų (2006/95/EB). - Elektros tinklą su energijos tiekimo moduliu sujungti gali tik įgaliotas elektrikas. - Niekada neišimkite energijos tiekimo modulio iš siųstuvo, kai maitinimas yra įjungtas. - Jei energijos tiekimo modulis nėra įmontuotas HMT330 siųstuve, nejunkite jo į elektros tinklą.
User's Guide _______________________________________________________________________ Galvanic Isolation of the Power Supply If galvanic isolation of the power supply line from the output signals is needed, HMT330 can be ordered with optional galvanic isolation module. This module prevents harmful grounding loops. NOTE Galvanic isolation module is not needed when using the AC power supply module. Note also that these two modules are physically incompatible to be installed at the same time.
Chapter 3 ________________________________________________________________ Installation Installation and Wiring 1. 2. 3. 4. 5. 6. 7. NOTE Disconnect the power. In case the analog output module is installed in the factory, continue with the step 4. Open the transmitter cover and fasten the analog output module to the position for MODULE 2 with four screws. Refer to Figure 2 on page 22. Connect the flat cable between the analog output module and the motherboard's connector for MODULE 2.
User's Guide _______________________________________________________________________ Relays HMT330 can be equipped with one or two configurable relay modules. Each module contains two configurable relays. See the contact ratings in section Technical Specifications of Optional Modules on page 176. Installation and Wiring 1. 2. 3. 4. 5. 6. CAUTION Disconnect the power and open the transmitter cover. In case the relay-module is installed in the factory, continue with step 5.
Chapter 3 ________________________________________________________________ Installation 0503-037 Figure 35 Relay Module The following numbers refer to Figure 35 above: 1 2 3 4 = = = = Indication led for the relay 1 or 3 Relay test buttons Flat cable pins Indication led for relay 2 or 4 WARNING The relay module may contain dangerous voltages even if the transmitter power has been disconnected.
User's Guide _______________________________________________________________________ 2 3 1 1102-023 Figure 36 RS-422/485 Module The following numbers refer to Figure 36 above: 1 2 3 NOTE = = = Flat cable pins Selection switches Screw terminals for wiring The data lines on earlier versions of the RS-422/485 module are marked A and B instead of D1+ and D0-. When the line is idle, D1+ has positive voltage compared to D0-.
Chapter 3 ________________________________________________________________ Installation 5.
User's Guide _______________________________________________________________________ Termination Termination 120R Rx D0Rx D1+ Common Tx D0Tx D1+ 120R Junction box Common line Stub RS485 bus master Twisted pair Address NN Switch Term off Term off 2/4 wire on RS422 off Tx D0Tx D1+ Common Rx D0Rx D1+ Junction box Common line Stub RS485-1 Twisted pair Address MM Switch Term off Term off 2/4 wire on RS422 off Tx D0Tx D1+ Common Rx D0Rx D1+ Junction box 120R Stub RS485-1 Baud > 19.
Chapter 3 ________________________________________________________________ Installation Termination 120R D0D1+ Common Junction box Stub RS485 bus master Twisted pair Common line Address NN Switch Term off Term off 2/4 wire off RS422 off Junction box Common D0D1+ Stub RS485-1 Twisted pair Common line Address MM Switch Term off Term off 2/4 wire off RS422 off Junction box Common D0D1+ 120R Stub RS485-1 Termination 1102-027 Figure 38 2-Wire RS-485 Bus Table 8 2-Wire (Switch 3: Off) RS-485 mast
User's Guide _______________________________________________________________________ LAN Interface The optional LAN interface enables an Ethernet connection to the transmitter. The user can establish a virtual terminal session using a Telnet client program such as PuTTY or by using Modbus TCP protocol. When the LAN interface is in use, serial communication using the RS232 User Port is disabled.
Chapter 3 ________________________________________________________________ Installation WLAN Interface The optional WLAN interface enables a wireless Ethernet connection (IEEE 802.11b) to the transmitter. The user can establish a virtual terminal session using a Telnet client program such as PuTTY or by using Modbus TCP protocol. When the WLAN interface is in use, serial communication using the RS-232 User Port is disabled.
User's Guide _______________________________________________________________________ NOTE The WLAN interface is not recommended for use with the HMT331 fixed probe model (for wall-mounted applications). The HMT331 short cable probe is designed to be used with the WLAN interface. Attaching the WLAN Antenna The WLAN interface module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center.
Chapter 3 ________________________________________________________________ Installation already in memory. However, the data of any removed quantity cannot be accessed unless the quantity is re-activated first. The data logger module has a real time clock with a battery back-up. The clock has been set to the Coordinated Universal Time (UTC) at the factory, and its time cannot be set by the user. The data that is stored in the logger's memory is timestamped using the logger's clock.
User's Guide _______________________________________________________________________ 8-Pin Connector 1104-126 Figure 42 Pinout of the Optional 8-Pin Connector Table 10 Wiring of the Optional 8-Pin Connector Pin Wire 1 2 White Brown Serial Signal RS-232 (EIA-232) Data out TX (Serial GND) 3 4 5 6 7 8 Green Yellow Grey Pink Blue Shield/Red Supply Supply + Data in RX Cable shield Analog Signal RS-485 (EIA-485) D1+ (Serial GND) Signal GND (for both channels) Ch 2+ Ch 1 + Supply Supply Supply + Sup
Chapter 4 _________________________________________________________________ Operation CHAPTER 4 OPERATION This chapter contains information that is needed to operate this product. Getting Started Within a few seconds after power-up the LED on the cover of the transmitter is lit continuously indicating normal operation. If the data logger module is installed, the startup may take up to 18 seconds.
User's Guide _______________________________________________________________________ NOTE From any view, even in the absence of an EXIT button, a four-second press on the right-hand function button takes you directly to the basic display. Graphic History The graphical display shows the data trend or min/max graph of the selected quantities, one at a time. The graph is updated automatically while measuring. 0705-210 Figure 44 Graphical Display Trend graph: Shows you a curve of average values.
Chapter 4 _________________________________________________________________ Operation - Press the ◄► arrow buttons move the cursor (vertical bar) along the time axis. The cursor mode allows you to observe individual measuring points. The numerical value at the cursor position is shown at the left upper corner. The right upper corner shows the time from the present to the chosen moment (without the logger module), or the date and time at the cursor position (when the logger module is installed).
User's Guide _______________________________________________________________________ Menus and Navigation You can change settings and select functions in the menus. 1. 2. 3. 4. 5. Open the Main Menu by pressing any of the ▼▲◄► arrow buttons in the basic (numeric) display mode. Move in the menus by using the ▲▼ arrow buttons. Open a submenu with ► button. Press ◄ to return to the previous level. Function button EXIT returns you back to the basic display.
Chapter 4 _________________________________________________________________ Operation Changing the Language 1. Go back to the basic display by keeping the right-hand pressed for four seconds. 2. 3. Open the Main Menu by pressing any of the ▼▲◄► buttons. Scroll to the System menu option, and press the ► button. The menu option is indicated with the wrench symbol. Scroll to the Language menu option, and press the left-hand button. The menu option is indicated with the flag symbol.
User's Guide _______________________________________________________________________ Display Contrast Setting Display contrast is automatically adjusted based on the ambient temperature. However, depending on the installation location and viewing direction, it may be necessary to fine-tune the contrast manually. Using Display/Keypad 1. 2. 3. 4. 5. Open the Main Menu by pressing any of the ▼▲◄► arrow buttons. Select Display, press the ►arrow button. Select Contrast, press the ADJUST button.
Chapter 4 _________________________________________________________________ Operation Keypad Lock (Keyguard) This function locks the keypad and prevents unintentional key presses. 1. 2. Keep pressing the left-hand function button for 4 seconds to lock the keypad (at any display). To unlock the keypad, press the OPEN button for 4 seconds. Menu PIN Lock You can prevent unauthorized changes of the device settings by activating the menu PIN lock.
User's Guide _______________________________________________________________________ Factory Settings Use the display/keypad to restore the factory settings. This operation does not affect the adjustments. Only settings available in the menus are restored. 1. 2. 3. Press any of the arrow buttons to open the Main Menu. Select System by pressing the ► arrow button. Select Factory settings and press the REVERT button to confirm your selection.
Chapter 4 _________________________________________________________________ Operation 1102-012 Figure 47 Alarm Limits Shown on Graph Screen When an alarm is activated, an alarm note is displayed on the display, and the lights of the display will blink. If the data logger module is installed, the alarm note includes the time and date of the alarm. 0802-041 Figure 48 Display Alarm Active Multiple alarms can be active at the same time; the alarm that was triggered first will be shown on the display.
User's Guide _______________________________________________________________________ 0802-069 Figure 49 3. NOTE Display Alarms Use the arrow keys to select an alarm to configure. The alarm editing page opens. Changes you do on the alarm editing page will take effect immediately, and may cause an alarm to appear on the screen. 4. 5. To select a quantity for the alarm, press the Change button and select the quantity from the list.
Chapter 4 _________________________________________________________________ Operation Using Serial Line Use the serial line command ALSEL to view or set the display alarms. ALSEL [quantity1 quantity2] where quantity1 = Quantity for display alarm 1. You can set any quantity available on your transmitter; see Table 3 on page 19 and Table 4 on page 19.
User's Guide _______________________________________________________________________ Example (set Tdf and T as display alarm quantities and configure the alarms as prompted): >alsel tdf t Al1 Tdf above: Al1 Tdf below: Al1 Tdf hyst : Al1 Tdf enabl: Al2 T above: Al2 T below: Al2 T hyst : Al2 T enabl: > 80.00 'C ? 0 - ? 1.00 'C ? ON ? 40.00 'C ? 30 - ? 1.
Chapter 4 _________________________________________________________________ Operation Serial Line Communication Connect the serial interface by using either the User Port or the Service Port. For permanent interfacing to host system, use the User Port. You can change the serial settings and operate in RUN, STOP, SEND, POLL, and Modbus modes. For temporary connections, use the Service Port. The Service Port is always available with fixed serial settings.
User's Guide _______________________________________________________________________ User Port Connection Use a suitable serial cable between the user port RxD, GND and TxD screw terminals and the PC serial port, see Figure 52 below.
Chapter 4 _________________________________________________________________ Operation Service Port Connection Connection Cables To connect to the service port, you need a suitable cable with an RJ45 connector. Depending on the connections of your PC, you can either use the Serial Connection Cable (optional accessory 19446ZZ) or the USB-RJ45 Serial Connection Cable (optional accessory 219685). The USB cable enables you to connect the transmitter to a PC via a standard type A USB port.
User's Guide _______________________________________________________________________ Using the Service Port 1. 2. 3. Unfasten the screws on the transmitter cover, and open the transmitter. Connect the desired cable (serial interface cable or USB cable) to your PC and the service port connector on the transmitter. For the location of the service port, refer to Figure 51 on page 79.
Chapter 4 _________________________________________________________________ Operation IP Configuration The IP settings of the LAN and WLAN interfaces are described in Table 16. The current settings can be viewed on the serial line or using the device information display; see section Device Information on page 108.
User's Guide _______________________________________________________________________ Using Display/Keypad You can configure the IP settings of the LAN and WLAN interfaces using the display/keypad as follows: 1. 2. 3. 4. Press any of the arrow buttons to open the Main Menu. Press the ► arrow button to select Interfaces. Press ► arrow button to select Network settings. There will be a delay as the transmitter refreshes the network information. You are now in the Network Interface menu.
Chapter 4 _________________________________________________________________ Operation Using Serial Line Use the serial line command NET to view or set the network settings for the LAN and WLAN interfaces. You can also refresh the network information or disconnect all active connections. NET [REFRESH] [DISCONNECT] [DHCP WEB] [DHCP IP SUBNET GATEWAY WEB] where REFRESH = Updates the network information and displays it DISCONNECT = Disconnects all current sessions DHCP = ON or OFF.
User's Guide _______________________________________________________________________ >net off 192.168.0.101 255.255.255.0 192.168.0.1 off DHCP : OFF IP address : 192.168.0.101 Subnet mask : 255.255.255.0 Default gateway: 192.168.0.1 Web config. : OFF MAC address : 00:40:9d:2c:d2:05 Status : Connected OK > Wireless LAN Configuration The settings of the WLAN interface are described in Table 17.
Chapter 4 _________________________________________________________________ Operation Using Display/Keypad You can configure the Wireless LAN settings using the display/keypad as follows: 1. 2. 3. 4. Press any of the arrow buttons to open the Main Menu. Press the ► arrow button to select Interfaces. Press the ► arrow button to select Network settings. There will be a delay as the transmitter refreshes the network information. Press the ► arrow button to select Wireless LAN settings.
User's Guide _______________________________________________________________________ 7. 8. If you have selected an encrypted network type (WEP or WPA), you must enter the security key to be used. Select the Key/passphrase entry and press the Set button. Enter the key in the same way as the SSID, and press the OK button. With the WEP encryption you must enter the encryption key in hexadecimal (10 hexdecimals for 64-bit encryption or 26 hexadecimals for 128-bit encryption).
Chapter 4 _________________________________________________________________ Operation Communication Protocol When a connection is established via the LAN or WLAN interface, the session has the same communication mode, run interval, poll address and echo settings as the serial port (User Port) session would have. These settings can be changed using the display/keypad, using the serial line (User Port or Service Port), or on-the-fly during a Telnet session.
User's Guide _______________________________________________________________________ 1102-017 Figure 58 Web Configuration Interface for LAN Terminal Program Settings The instructions below describe how to connect to the HMT330 using the PuTTY terminal application for Windows. Perform the necessary cabling and configuration of the transmitter before following the instructions. PuTTY is available for download at www.vaisala.com.
Chapter 4 _________________________________________________________________ Operation 0810-070 Figure 59 4. Opening a Serial Connection Click the Open button to open the connection window and start using the serial line. If PuTTY is unable to open the serial port you selected, it will show you an error message instead. If this happens, restart PuTTY and check the settings.
User's Guide _______________________________________________________________________ 0810-071 Figure 60 4. Opening a Telnet Connection Click the Open button to open the connection window and start using the Telnet session. If PuTTY is unable to connect the IP address you entered, it will show you an error message instead. If this happens, check the IP address and the connections, restart PuTTY, and try again.
Chapter 4 _________________________________________________________________ Operation List of Serial Commands All commands can be issued either in uppercase or lowercase. In the command examples, the keyboard input by the user is in bold type. The notation refers to pressing the carriage return (Enter) key on your computer keyboard. Enter a to clear the command buffer before starting to enter commands. In the tables below, the bold text in the brackets is the default setting.
User's Guide _______________________________________________________________________ Table 21 Data Recording Commands Command DIR PLAY [0 ...
Chapter 4 _________________________________________________________________ Operation Table 26 Other Commands Command ? ?? ALSEL CON ECHO [ON/OFF] ERRS FILT FIND HELP LIGHT LOCK MODBUS MODS PRES [hPa] RHLIMIT [ON/OFF] VERS XHEAT XPRES [hPa] Description Output information about the device Output information about the device in POLL mode Set display alarms Set display contrast Turn the serial interface echo ON/OFF List present transmitter errors Set the result filtering All devices in POLL mode send their
User's Guide _______________________________________________________________________ Stopping Continuous Outputting Use the S command to end the RUN mode. After this command all other commands can be used. You can also press the Esc button or reset the transmitter to stop the outputting. S See command SMODE to change the default (power-up) operation mode. Outputting Reading Once Use the SEND command to output the reading once in STOP mode. SEND Examples: >send RH= 98.4 %RH T= 31.1 'C >send RH= 98.
Chapter 4 _________________________________________________________________ Operation Outputting Reading Once From All Transmitters Use the DSEND command to output the reading once from all connected transmitters that are in STOP or POLL modes. In order to avoid data collisions, the transmitters will send their response after a suitable delay. The response includes the transmitters’s address, followed by their measurement message.
User's Guide _______________________________________________________________________ Formatting Serial Line Message NOTE Instead of using the FTIME, FDATE and FST commands described in this section, you can use the FORM command with modifiers TIME, DATE, and STAT. See section FORM on page 101. FTIME and FDATE FTIME and FDATE commands will enable/disable output of time and date to the serial line.
Chapter 4 _________________________________________________________________ Operation FST To output the state of optional probe heating and chemical purge in connection with SEND and R commands enter: FST [x] where x = ON or OFF (default) Examples: >fst on Form. status : ON >send N 0 RH= 40.1 %RH T= 24.0 'C Td= 9.7 'C Tdf= 9.7 'C a= 8.7 g/m3 x= 7.5 g/kg Tw= 15.6 'C ppm= 11980 pw= 12.00 hPa pws= 29.91 hPa h= 43.2 kJ/kg >purge Purge started, press any key to abort. >send S 134 RH= 40.2 %RH T= 24.
User's Guide _______________________________________________________________________ General Settings Changing Quantities and Units To change quantities and units use serial commands or the optional display/keypad. See Table 3 on page 19 for available quantities and Table 4 on page 19 for optional quantities. NOTE Only the quantities selected when ordering the device can be selected as display output quantities. Using Display/Keypad Use display/keypad to select the display output quantities. 1. 2. 3. 4.
Chapter 4 _________________________________________________________________ Operation Using Serial Line Use the serial line command FORM to change the format, and the command UNIT to select metric or non-metric output units. FORM Use the serial line command FORM to select the output quantities and format for serial line measurement messages. FORM [x] where x = Formatter string The formatter string consists of quantities and modifiers.
User's Guide _______________________________________________________________________ Table 27 Modifier x.y #t #r #n “" #xxx U5 ADDR ERR STAT SN TIME DATE CS2 CS4 CSX FORM Command Modifiers Description Length modifier (number of digits and decimal places) Tabulator Carriage-return Line feed String constant Special character, code "xxx" (decimal), for example #027 for ESC Unit field and length (length optional) Transmitter address [00...255] Error flags for P, T, Ta, RH [0000 ...
Chapter 4 _________________________________________________________________ Operation UNIT Use the UNIT command to select metric or non-metric output units, and change the unit for the H2O quantity: UNIT [x] where x = Unit system to be used. Options are: M (metric units) N (non-metric units) UNIT H2O [y] where y NOTE = Unit to be used for H20. Options are: PPMV (parts per million by volume) PPMW (parts per million by weight) This command changes both the serial output and display units.
User's Guide _______________________________________________________________________ Pressure Compensation Setting The pressure has an effect on humidity calculations and accuracy. Therefore, accurate calculations can be achieved only when the process pressure is taken into consideration. Note that conversions from mmHg and inHg are defined at 0°C and for mmH2O and inH2O at 4°C. NOTE Pressure compensation is intended to be used in normal air only.
Chapter 4 _________________________________________________________________ Operation Table 28 Conversion Factors for Pressure Units From mbar Pa N/m2 mmHg torr inHg mmH2O inH2O atm at bar 1) psia 1) psia = psi absolute. To: hPa 1 0.01 1.333224 33.86388 0.09806650 2.490889 1013.25 980.665 1000 68.94757 For example, 29.9213 inHg = 29.9213 × 33.86388 = 1013.25 hPa.
User's Guide _______________________________________________________________________ Date and Time Using Display/Keypad If the optional Data Logger Module is installed, you can change the time and date using the display/keypad. 1. 2. 3. 4. 5. 6. Press any of the arrow buttons to open the Main Menu. Select System and press the ► arrow button to confirm your selection. Select Date and time and press the ► arrow button.
Chapter 4 _________________________________________________________________ Operation Data Filtering The averaging data filter calculates an average over a certain period of time. The lowest measurement noise is achieved with the extended filtering. There are three filtering levels available. Table 29 Filtering Levels Setting OFF STANDARD EXTENDED Filtering Level No filtering (default setting). Standard filtering. Approximately 13 s moving average. Extended filtering.
User's Guide _______________________________________________________________________ Example (enable standard filtering): >filt on Filter > : ON Device Information Use the display/keypad or the serial line to display the device information.
Chapter 4 _________________________________________________________________ Operation ? Use the serial line command ? to check the current transmitter configuration. Command ?? is similar but can also be used if the transmitter is in POLL mode. Example: >? HMT330 / 5.10.0 Serial number : Batch number : Adjust. date : Adjust.
User's Guide _______________________________________________________________________ HELP Use the HELP command to list the currently available commands. The available commands are determined by the device configuration and installed options.
Chapter 4 _________________________________________________________________ Operation VERS Use the VERS command to display software version information. Example: >vers HMT330 / 5.10 > Resetting Transmitter Using Serial Line RESET This command resets the device. The user port switches to start-up output mode selected with command SMODE. Locking Menu/Keypad Using Serial Line LOCK Use the LOCK command to prevent the user from entering the menu using the keypad, or to lock the keypad completely.
User's Guide _______________________________________________________________________ Serial Output Settings The communication settings for the user port can be changed via the serial line or by using the optional display/keypad. The communication settings for the service port are fixed and not changeable. NOTE If a communication module (LAN, WLAN, or RS-422/485 interface) has been installed, the user port is not accessible.
Chapter 4 _________________________________________________________________ Operation Using Serial Line NOTE You can use the serial commands to change/view the user port settings even if you are currently connected to the service port. SERI Use the SERI command to set the communication settings for the user port. Changed settings will be activated at next reset or power up.
User's Guide _______________________________________________________________________ SMODE Use the SMODE command to set the user port start-up operating mode. SMODE [xxxx] where xxx = STOP, SEND, RUN, POLL, or MODBUS. Table 30 Mode STOP SEND Selection of Output Modes Measurement Output Only with the SEND command. One measurement message automatically at start-up, then only with the SEND command. Automatic output. Only with the SEND [addr] command.
Chapter 4 _________________________________________________________________ Operation INTV Use the INTV command to set the RUN mode output interval. The time interval is used only when the RUN mode is active. Setting the interval to zero enables the fastest possible output rate. INTV [xxx yyy] where xxx yyy = Delay, range 0 ... 255. = Unit: S, MIN or H.
User's Guide _______________________________________________________________________ Data Recording Data recording function is always on and collects data automatically into the memory of the device. If the optional data logger module is installed, the transmitter uses it automatically. Recorded data does not disappear from the memory when the power is switched off.
Chapter 4 _________________________________________________________________ Operation number of recorded files to seven for each quantity. Thus, the total amount of the files varies between 6 and 28. See Table 11 on page 68. Select, for example, three quantities (RH, T, and Tdf). The last column illustrates the number of data points that has been stored in the file.
User's Guide _______________________________________________________________________ PLAY Use the PLAY command to output the selected file to the serial line. If the data logger module is installed, you can specify an interval to be outputted. Data in the output is delimited. This is compatible with most spreadsheet programs. Before giving the command, set the local date and time with TIME and DATE commands, if needed.
Chapter 4 _________________________________________________________________ Operation Deleting the Recorded Files You can delete the recorded data files using the keypad/display, or the DELETE command on the serial line. The deletion is always done for all data; you cannot delete individual files. Note that the transmitter automatically overwrites the old data when the memory is full, so manual deletion of the recorded files is not necessary in normal use.
User's Guide _______________________________________________________________________ Analog Output Settings The analog outputs are set in the factory according to the order form. In case you want to change the settings, follow these instructions. See section Third Analog Output on page 54. Changing Output Mode and Range Both output channels have their own DIP switch module with 8 switches; see the position in Figure 2 on page 22 (DIP switches for analog output settings). 1.
Chapter 4 _________________________________________________________________ Operation Example: 0 ... 5 V voltage output selected for channel 1 and 4 ... 20 mA selected for channel 2. 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 NOTE OFF ON █ █ █ █ █ █ █ █ █ █ █ █ █ █ Selection Voltage output selected 0 ... 5 V selected █ Current output selected █ 4 ... 20 mA selected If you have customized the error output setting (AERR), check that the set error values are still valid after changing the output mode/range.
User's Guide _______________________________________________________________________ AMODE/ASEL Use the serial line to select and scale the analog output quantities. Check the analog output modes with the AMODE command. AMODE Example: >amode Ch1 output Ch2 output > : 0...1V : 0...1V Select and scale the quantities for the analog outputs with the command ASEL. Note that the optional quantities can be selected only if they have been selected when ordering the device.
Chapter 4 _________________________________________________________________ Operation Analog Output Tests Use the display/keypad to test the operation of the analog output s by forcing the outputs to known values. Measure then the outputs with a current/voltage meter. 1. 2. 3. 4. 5. 6. Press any of the arrow buttons to open the Main Menu. Select System by pressing the ► arrow button. Select Diagnostics by pressing the ► arrow button. Select Analog output tests by pressing the ► arrow button.
User's Guide _______________________________________________________________________ Analog Output Fault Indication Setting Factory default state for analog outputs during error condition is 0 V/ 0 mA. Please be careful when selecting the new error value. The error state of the transmitter should not cause unexpected problems in process monitoring. Use the display/keypad to set the analog output fault indication. 1. 2. 3. 4. 5. 6. Press any of the arrow buttons to open the Main Menu.
Chapter 4 _________________________________________________________________ Operation Extend Analog Output Range Use the AOVER command to allow the analog output channels to exceed their specified range by 10%. The scaling of the parameter remains as before; the extra range is used for additional measurement range in the high end of the scale. AOVER [ON/OFF] Example: >aover on Extended output: ON > The following example illustrates how the analog output is affected.
User's Guide _______________________________________________________________________ 1102-007 Figure 63 Measurement-Based Relay Output Modes Mode 4 is usually used if an alarm needs to be triggered when the measured value exceeds a safe range. The relay is active when measurement is in range, and is released if the value goes out of range or the measurement fails. NOTE If the measurement of the selected quantity fails or the transmitter loses its power, the relay is released.
Chapter 4 _________________________________________________________________ Operation Hysteresis Hysteresis function is to prevent the relay switching back and forth when the measured value is near to the setpoint values. Relay is activated when the measured value passes the exact value of the setpoint. When returning and passing the setpoint again relay is not released before the value reaches the setpoint increased/decreased by the hysteresis value.
User's Guide _______________________________________________________________________ 1102-040 Figure 64 FAULT/ONLINE STATUS Relay Output Modes FAULT/ONLINE STATUS relays are usually used in conjunction with an analog output to obtain validity information for the output value. NOTE If transmitter loses its power, all status-based relays are released similarly to the case of an instrument failure.
Chapter 4 _________________________________________________________________ Operation Table 31 Relay State Examples Criterion for Relay Activation Transmitter Operation Status NC-C Connected NO-C Connected Not chosen Power off RH below 50 %* RH above 50 %* Measured RH above 50 % Measured RH below 50 % Measured RH above 50 % Measured RH below 50 % Measurement OK Fault status Error active Measurement live Online status Purge or sensor heating active * Hysteresis has an effect when relay switchin
User's Guide _______________________________________________________________________ 0706-003 Figure 65 Relay Indicators on Display The following number refers to Figure 65 above: 1 = Lists enabled relays. Activation state shown in black. Disabled relays are not shown. Use the display/keypad to set the relay outputs. 1. Press any of the arrow buttons to open the Main Menu. 2. Select Interfaces, confirm by pressing the ►arrow button. 3. Select Relay outputs, confirm by pressing the ►arrow button. 4.
Chapter 4 _________________________________________________________________ Operation Use the quantity abbreviations presented above. See Table 3 on page 19 and Table 4 on page 19. Example of window limit switch: Selecting relay 1 to follow relative humidity measurement and relay 2 to follow temperature measurement. Two relay setpoints are set for both relays. >rsel rh t Rel1 RH above: 0.00 %RH ? 30 Rel1 RH below: 0.00 %RH ? 40 Rel1 RH hyst : 0.00 %RH ? 2 Rel1 RH enabl: OFF ? ON Rel2 T above: 0.
User's Guide _______________________________________________________________________ Testing Operation of Relays Testing activates relays even if they are disabled. Use the module push buttons to activate the relays. Press the REL 1 or REL 2 button to activate the corresponding relay. Relay is activated: Relay is not activated: led is lit led is not lit Use the display/keypad to test the operation of relays. 1. 2. 3. 4. 5. Open the Main Menu by pressing any of the arrow buttons.
Chapter 4 _________________________________________________________________ Operation Sensor Functions Chemical Purge (Optional) In some specific applications the sensor gain may decrease gradually due to an interference caused by a particular chemical present in the measured gas, for example. The decrease of sensor gain due to an interfering chemical and the effect of the chemical purge process are illustrated below, see Figure 66 below.
User's Guide _______________________________________________________________________ Before starting the chemical purge, note the following: - The sensor is protected with a PPS grid with stainless steel netting, a stainless steel sintered filter or with membrane SST filter. - The sensor temperature must be below 100 °C. At higher temperatures the chemicals evaporate spontaneously from the sensor and the chemical purge is not necessary.
Chapter 4 _________________________________________________________________ Operation Starting and Configuring Chemical Purge Using Buttons on Motherboard Start manual chemical purge by pressing simultaneously two PURGE buttons on the motherboard inside the transmitter for a few seconds. Indicator LED flashes until purge is complete (up to 6 minutes). 0508-011 Figure 67 Purge Buttons on Motherboard Using Display/Keypad (Optional) 1. Open the Main Menu by pressing any of the ▼▲◄► arrow buttons. 2.
User's Guide _______________________________________________________________________ 4. If you have the data logger module installed, you can also specify the Date and Time when the purge is performed next. Press EXIT to return to the basic display. 0706-004 Figure 69 Performing Chemical Purge Using Serial Line PURGE Use the PURGE command to start chemical purge immediately. >purge Purge started, press any key to abort. > The prompt '>' appears when the heating period is over.
Chapter 4 _________________________________________________________________ Operation Example (no data logger module installed): >pur Interval Purge Interval Power-up Purge Duration Settling Temperature Temp. diff. > : : : : : : : OFF 720 OFF 120 240 160 0.5 ? min ? ? s ? s ? 'C ? 'C ? Example (with data logger module installed): >pur Interval Purge : Interval : Next Purge date: Next Purge time: Power-up Purge : Duration : Settling : Temperature : Temp. diff.
User's Guide _______________________________________________________________________ Sensor Heating This function is optionally available only in transmitters with HUMICAP®180C or HUMICAP®180RC sensor. It should be used only with the warmed probe. The sensor heating is recommended for the high humidity environments where even small temperature differences can cause water to condense on the sensor. The sensor heating speeds up the recovery of the humidity sensor from condensation.
Chapter 4 _________________________________________________________________ Operation To configure the sensor heating use the XHEAT command without parameters. Enter the values after question mark. The available ranges include the following: Extra heat RH -limit (heating function starts-up above the setpoint) Extra heating temperature Extra heating time 0 ... 100 %RH (default: 95 %RH) 0 ... 200 ºC (default: 100 ºC) 0 ...
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Chapter 5 ___________________________________________________________________ Modbus CHAPTER 5 MODBUS This chapter contains information that is needed when operating the transmitter using the Modbus protocol. Overview of Modbus Protocol Support The HMT330 transmitter can be accessed using the Modbus serial communication protocol. Support for Modbus protocol is available on all HMT330 transmitters as a standard feature from software version 5.10 onward.
User's Guide _______________________________________________________________________ Taking Modbus into Use To take the Modbus protocol into use on the HMT330, you must perform some configuration tasks using the built-in display and keypad (optional) or a PC connected to the serial line. For example, you can connect to the service port using the USB service cable (Vaisala order code: 219685). The transmitter must be powered from a suitable power supply during configuration.
Chapter 5 ___________________________________________________________________ Modbus Enabling Serial Modbus In addition to enabling the Modbus protocol in the device, Modbus over RS-232 or RS-485 needs the following software settings: serial bit rate, parity, number of stop bits, and Modbus device address. Using Display/Keypad (Optional) Open the Main Menu by pressing any of the ▼▲◄► arrow buttons. 2. Navigate to Interfaces ► Serial Interface. 3.
User's Guide _______________________________________________________________________ 6. Use the SMODE command to enable the Modbus mode: >smode modbus Serial mode > 7. : MODBUS If necessary, use the SERI command to check and/or change the serial interface settings for the User Port. For example, to set the User Port serial settings to 19200 N 8 1, issue the following command: >seri 19200 N 8 1 NOTE The number of data bits must always be 8 for Modbus RTU.
Chapter 5 ___________________________________________________________________ Modbus 1101-034 Figure 71 4. 5. IP Configuration Navigate back to the Network Settings menu. If you are using the WLAN interface, select Wireless LAN Settings. On the Wireless LAN Settings screen, set the network name (SSID) and security options, and exit to save the changes. 1101-036 Figure 72 6. 7. Wireless LAN Settings Navigate back to the Network Settings menu. Select Communication Protocol.
User's Guide _______________________________________________________________________ Using Serial Line 1. 2. 3. 4. 5. 6. Open the transmitter cover. Connect power supply wiring (if not using the power supply module) and power up the transmitter. Connect the USB service cable between a computer and the service port of the transmitter.
Chapter 5 ___________________________________________________________________ Modbus b. If you are using the WLAN interface, use the WLAN command to configure the network name (SSID) and security settings. For example: >wlan Network SSID : NAME ? NETWORKID Type : OPEN ? WPA-PSK/TKIP WPA-PSK phrase ? thequickbrownfox Save changes (Y/N) ? y OK > For a description of the available settings, see section Wireless LAN Configuration on page 86. 8. The Modbus configuration is now complete.
User's Guide _______________________________________________________________________ Viewing Counters Using Service Port Use the MODBUS command to view the counters: MODBUS Example: >modbus Bus messages : Bus comm. error: Bus exceptions : Slave messages : Slave no resp. : Last message : > 0 0 0 0 0 In addition to the diagnostic counters, the last message (received or transmitted) is shown in hexadecimal format. If the last message was a broadcast message, the suppressed response message is shown.
Chapter 6 _______________________________________________________________ Maintenance CHAPTER 6 MAINTENANCE This chapter contains information that is needed in basic maintenance of the product. Periodic Maintenance Cleaning Clean the transmitter enclosure with a soft, lint-free cloth moistened with mild detergent. Changing the Probe Filter 1. 2. Turn the filter counter-clockwise to loosen it. Remove the filter from the probe. Be careful not to touch the sensor with the filter.
User's Guide _______________________________________________________________________ Changing the Sensor NOTE When replacing the sensor, the new sensor must be of the same type as the old sensor (for example, HUMICAP180R). The sensor type can only be changed at a Vaisala Service Center. Information on Vaisala sensors is available online at www.vaisala.com/sensorinfo. Changing HUMICAP180 and HUMICAP180R humidity sensors is simple.
Chapter 6 _______________________________________________________________ Maintenance Error States In error state the affected quantities are not measured and the output is shown as follows: - Analog channel outputs 0 mA or 0 V (you can use the serial line command AERR or display/keypad to change this fault indication value, see section Analog Output Fault Indication Setting on page 124.). - Serial port outputs stars "***" instead of measurement data. - Display shows "----" instead of measurement data.
User's Guide _______________________________________________________________________ Table 33 Error Messages Error Code Error Message E0 Humidity sensor measurement malfunction. E1 Humidity sensor short circuit E2 Humidity sensor open circuit E3 Temperature sensor open circuit. E4 Temperature sensor short circuit. E5 Temperature measurement malfunction E6 Temperature sensor current leak.
Chapter 6 _______________________________________________________________ Maintenance Technical Support For technical questions, contact the Vaisala technical support by e-mail at helpdesk@vaisala.com. Provide at least the following supporting information: - Name and model of the product in question Serial number of the product Name and location of the installation site Name and contact information of a technically competent person who can provide further information on the problem.
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Chapter 7 ___________________________________________________ Calibration and Adjustment CHAPTER 7 CALIBRATION AND ADJUSTMENT The HMT330 is fully calibrated and adjusted as shipped from factory. Typical calibration interval is one year. Depending on the application it may be good to make more frequent checks. Calibration must be done always when there is a reason to believe that the device is not within the accuracy specifications.
User's Guide _______________________________________________________________________ 0508-013 Figure 77 Adjustment and Purge Buttons The following numbers refer to Figure 77 above: 1 2 3 = = = Indicator LED Adjustment button Press the purge buttons simultaneously to start chemical purge (if available) Adjustment menu is displayed only when ADJ button (on the motherboard inside the transmitter) is pressed.
Chapter 7 ___________________________________________________ Calibration and Adjustment Relative Humidity Adjustment Using Push Buttons A simple push-button adjustment is carried out by using two relative humidity references: 11 %RH (LiCl) and 75 %RH (NaCl). 1. Carry out the chemical purge (if available). LiCl reference 2. 3. 4. 5. Press the ADJ button (see Figure 77 on page 156) on the motherboard to open the adjustment mode. The indicator LED starts flashing.
User's Guide _______________________________________________________________________ Using Display/Keypad Note that the difference between the two humidity references must be at least 50 %RH. 1. 2. 3. 4. 5. Carry out the chemical purge (if available). Press the ADJ button (opens the ADJUSTMENT MENU). Select Adjust RH measurement, press ► button. Select 1-point/ 2-point adjustment, press START. Select the reference as guided by the display, press SELECT. 0706-005 Figure 79 6. 7. 8. 9. 10.
Chapter 7 ___________________________________________________ Calibration and Adjustment Using Serial Line Note that the difference between the two humidity references must be at least 50 %RH. 1. 2. 3. 4. 5. Connect the HMT330 to a PC. See section Serial Line Communication on page 79. Open a terminal program. Carry out the chemical purge (if available). Press the ADJ button.
User's Guide _______________________________________________________________________ 11. When stabilized, type the high end reference value after the question mark and press ENTER. >crh RH : 11.25 Ref1 ? c RH : 11.24 Ref1 ? c RH : 11.24 Ref1 ? 11.3 Press any key when ready ... RH RH RH RH OK > 12. 13. 14. : : : : 75.45 75.57 75.55 75.59 Ref2 Ref2 Ref2 Ref2 ? ? ? ? c c c 75.5 indicates that the adjustment has succeeded and the new calibration coefficients are calculated and stored.
Chapter 7 ___________________________________________________ Calibration and Adjustment Multipoint Adjustment Using Serial Line You can use the MPC command (introduced in software version 5.14) to perform a multipoint adjustment to the relative humidity measurement. Due to the linear response of the HUMICAP® sensor, the standard two point adjustments are recommended for all users. Use multipoint correction only if: - You have a requirement to adjust the relative humidity measurement in 3 ...
User's Guide _______________________________________________________________________ Example Multipoint Adjustment Procedure 1. 2. Connect the HMT330 to a PC. See section Serial Line Communication on page 79. Open a terminal program. Issue the PURGE command to carry out the chemical purge, and wait for six minutes for it to complete. Transmitters without the chemical purge feature will not respond to the command. >purge Purge started, press any key to abort... 3. 4.
Chapter 7 ___________________________________________________ Calibration and Adjustment 7. 8. To start, remove the filter from the probe and insert the probe into a measurement hole of the driest reference chamber you intend to use. Proceed from low to high humidity. Remember to allow at least 30 minutes for the sensor to stabilize at each point. When done preparing the list, remove the probe from the last measurement chamber and re-attach the filter.
User's Guide _______________________________________________________________________ Relative Humidity Adjustment after Sensor Change Using Display/Keypad When using the optional display/keypad, follow the instructions in section Using Display/Keypad on page 158 but select Adj. for new RH sensor (instead of 1-point/ 2-point adjustment). Using Serial Line After sensor change, carry out the procedure as described in previous sections. Just replace the CRH command with the FCRH command.
Chapter 7 ___________________________________________________ Calibration and Adjustment Temperature Adjustment Using Display/Keypad 1. 2. 3. 4. 5. 6. 7. 8. 9. Press the ADJ button on the motherboard to open the ADJUSTMENT MENU. If using a warmed probe for measuring, probe heating will be interrupted when ADJ key is pressed. Wait some time for the probe to reach ambient temperature. Select ►Adjust T measurement, press ►key. Select 1-point/ 2-point adjustment, press START.
User's Guide _______________________________________________________________________ 4. Type C and press ENTER a few times to check if the reading is stabilized. Let the reading stabilize, give the reference temperature after the question mark and press ENTER three times. When using two reference temperatures (2-point calibration) press ENTER only twice and insert the probe to the second reference.
Chapter 7 ___________________________________________________ Calibration and Adjustment Analog Output Adjustment In the analog output calibration the analog output is forced to the following values: - Current output: 2 mA and 18 mA - Voltage output: 10 % and 90 % of the range Connect HMT330 to a calibrated current/voltage meter in order to measure either current or voltage depending on the selected output type. Using Display/Keypad 1. 2. 3. 4. 5. 6. 7. Press the ADJ button to open the ADJUSTMENT MENU.
User's Guide _______________________________________________________________________ Feeding Adjustment Information This information is shown on the device information fields. See section Device Information on page 108. Using Display/Keypad 1. 2. 3. 4. 5. If you are not in the adjustment menu, press the ADJ button on the motherboard (opens the ADJUSTMENT MENU). Select Adjustment info, press the ► button. Select Date, press SET. Give the date by using the arrow buttons. Press OK. Select i, press SET.
Chapter 8 _____________________________________________________________ Technical Data CHAPTER 8 TECHNICAL DATA This chapter provides the technical data of the product. Specifications Performance Relative Humidity Measurement range 0 ... 100 %RH Accuracy (including non-linearity, hysteresis and repeatability) with HUMICAP®180 HUMICAP®180R HUMICAP®180C HUMICAP®180RC at +15 ... 25 °C at -20 ... +40 °C at -40 ...
User's Guide _______________________________________________________________________ Temperature (+ Operating Pressure Ranges) HMT331 HMT333 80 ºC HMT333 120 ºC HMT334 -40 ... +60 °C (-40 ... +140 °F) -40 ... +80 °C (-40 ... +176 °F) -40 ... +120 °C (-40 ... +248 °F) -70 ... +180 °C (-94 ... +356 °F), 0 ... 10 MPa (0 ... 100 bar) -70 ... +180 °C (-94 ... +356 °F) -70 ... +180 °C (-94 ... +356 °F) -70 ... +180 °C (-94 ... +356 °F), 0 ... 4 MPa (0 ...
Chapter 8 _____________________________________________________________ Technical Data Calculated Variables Table 36 Calculated Variables (Typical Ranges) Variable HMT331 Probe HMT333 Probe Dewpoint temperature Mixing ratio Absolute humidity Wet bulb temperature Enthalpy Water vapor pressure -20 ... +60 ºC 0 ... 160 g/kg dry air 3 0 ... 160 g/m 0 ... 60 ºC -40 ... +1500 kJ/kg 0 ... 1000 hPa -20 ... +80 ºC 0 ... 500 g/kg dry air 3 0 ... 500 g/m 0 ... +100 ºC -40 ... +1500 kJ/kg 0 ...
User's Guide _______________________________________________________________________ Accuracy of Wet Bulb Temperature °C Temp. -40 -20 0 20 40 60 80 100 120 140 160 Relative humidity 10 20 30 0.20 0.20 0.20 0.21 0.21 0.22 0.27 0.28 0.28 0.45 0.45 0.45 0.84 0.77 0.72 1.45 1.20 1.03 2.23 1.64 1.32 3.06 2.04 1.58 3.85 2.40 1.81 4.57 2.73 2.03 5.25 3.06 2.25 40 0.20 0.22 0.29 0.44 0.67 0.91 1.13 1.31 1.48 1.65 1.82 50 0.20 0.22 0.29 0.44 0.64 0.83 0.99 1.14 1.28 1.41 1.55 60 0.20 0.22 0.29 0.44 0.61 0.
Chapter 8 _____________________________________________________________ Technical Data Dewpoint Temperature (HMT337 Warmed Probe Option) Find the intersection of the dewpoint temperature curve and the dewpoint difference reading (process temperature-dewpoint temperature) on the xaxis and read the accuracy in dewpoint measurement on the y-axis.
User's Guide _______________________________________________________________________ Inputs and Outputs Operating voltage with optional power supply module Start-up time after power-up Power consumption at 20 °C (Uin 24VDC) RS-232 Uout 2 × 0 ... 1V / 0 ... 5V / 0 ... 10V Iout 2 × 0 ...
Chapter 8 _____________________________________________________________ Technical Data Mechanics Cable bushing M20x1.5 for cable diameter 8 ... 11mm/0.31..0.43" 1/2"NPT M12 series 8- pin (male) with plug (female) with 5 m / 16.
User's Guide _______________________________________________________________________ Technical Specifications of Optional Modules Power Supply Module Operating voltage Connections Bushing Operating temperature Storage temperature UL file number 100 ... 240 VAC 50/60 Hz screw terminals for 0.5 ... 2.5 mm2 wire (AWG 20 ... 14) for 8 ... 11 mm diameter cable -40 ... +60 °C (-40 ... +140 °F) -40 ... +70°C (-40 ... +158 °F) E249387 Analog Output Module Outputs 0 ... 20 mA, 4 ... 20 mA, 0 ... 1 V, 0 ...
Chapter 8 _____________________________________________________________ Technical Data RS-485 Module Operating temperature range Operating modes Operating speed max Bus isolation Power consumption at 24V External loads standard loads Storage temperature range Max wire size -40 ... +60 ºC (-40 ... +140 ºF) 2-wire (1-pair) half duplex 4-wire (2-pair) full duplex 115.2 kbaud 300VDC max 50 mA 32 RL> 10kohm -55 ... +80 ºC (-67 ... +176 ºF) 1.
User's Guide _______________________________________________________________________ Spare Parts and Accessories Information on spare parts, accessories, and calibration products is available online at www.vaisala.com and store.vaisala.com.
Chapter 8 _____________________________________________________________ Technical Data Description Order Code Swagelok for 6mm Probe 1/8" ISO SWG6ISO18 Thread Swagelok for 6mm Probe 1/8" NPT SWG6NPT18 Thread Cable Gland M20x1.
User's Guide _______________________________________________________________________ 27.5 (1.08) 71 (2.80) 77 (3.03) Dimensions (mm/inch) 53.5 (2.10) 38 (1.50) 38 (1.50) 53.5 (2.10) 183 (7.20) ø 7 (0.28) 96 (3.78) 116 (4.57) 169 (6.
Chapter 8 _____________________________________________________________ Technical Data 92 (3.62) 116 (4.57) 183 (7.
User's Guide _______________________________________________________________________ 120 (4.72) HMT331 12 (0.47) 0508-030 Figure 84 HMT331 Fixed Probe Dimensions 106 (4.17) 116 (4.57) 183 (7.20) 42 (1.
Chapter 8 _____________________________________________________________ Technical Data HMT333 0804-060 Figure 86 HMT333 Probe Dimensions HMT334 0804-059 Figure 87 HMT334 Probe Dimensions HMT335 0508-020 Figure 88 HMT335 Probe Dimensions The flange is available as an option for the HMT335 probe.
User's Guide _______________________________________________________________________ HMT337 0804-061 Figure 89 HMT337 Probe Dimensions HMT338 0508-078 Figure 90 HMT338 Probe Dimensions Temperature Probe 0804-062 Figure 91 Optional Temperature Probe Dimensions 184 __________________________________________________________________ M210566EN-K
Appendix A _________________________________ Probe Installation Kits and Installation Examples APPENDIX A PROBE INSTALLATION KITS AND INSTALLATION EXAMPLES Duct Installation Kits (for HMT333/337/335) Duct installation kit includes a flange, a sealing ring, a supporting bar, a probe attaching part, and screws for attaching the flange to the duct wall. Vaisala order codes: 210697 (for HMT333 and HMT337), 210696 (for HMT335, no supporting bar), and 215003 for temperature probe.
User's Guide _______________________________________________________________________ Duct Installation Kit for Temperature Probe (for HMT337) Vaisala duct installation kit for the T-probe includes flange, supporting bar, probe attaching part, sealing ring and the fixing screws (4 pcs). Vaisala order code: 215003.
Appendix A _________________________________ Probe Installation Kits and Installation Examples Pressure Tight Swagelok Installation Kits (for HMT337) RH Probe Installation Swagelok installation kit for the relative humidity probe includes Swagelok connector with ISO3/8" or NPT1/2" thread. Vaisala order codes: SWG12ISO38 or SWG12NPT12.
User's Guide _______________________________________________________________________ Examples of Vapor Tight Installations with Cable Gland RH-Probe Installations (for HMT333/337) Cable gland AGRO is available from Vaisala (order code: HMP247CG.
Appendix A _________________________________ Probe Installation Kits and Installation Examples T- Probe Installations (HMT337) 0508-015 Figure 98 Vapor Tight Installation Vapor Tight Installation is not available from Vaisala. The following numbers refer to Figure 98: 1 = 2 = Cable gland. For example AGRO 1100.12.91.065 (T= -25 ... +200 ºC) In pressurized processes, use a locking ring (example: 6x 0.
User's Guide _______________________________________________________________________ Example of Climate Chamber Installation 0507-016 Figure 100 Climate Chamber Installation (not Available from Vaisala) The following numbers refer to Figure 100: 1 2 3 4 5 6 7 NOTE = = = = = = = PTFE sleeve Cable gland, for example: AGRO 1100.12.91.
Appendix A _________________________________ Probe Installation Kits and Installation Examples Example of Installation Through Roof 2 1 12 3 Outdoor environment 11 10 9 8 4 5 Process: For example +85 ºC, 85 %RH 7 6 0507-015 Figure 101 Example of Installation through Roof The following numbers refer to Figure 101: 1 2 3 4 5 6 7 8 = = = = = = = = 9 10 11 12 = = = = Insulated probe cables Sealings Roof Cable gland for temperature probe (for example: AGRO 1100.12.91.
User's Guide _______________________________________________________________________ Ball Valve Installation Kit for HMT338 The ball valve installation kit (Vaisala order code: BALLVALVE-1) is preferred when connecting the probe to a pressurized process or pipeline. Use the ball valve set or a 1/2" ball valve assembly with a ball hole of ø14 mm or more. If you install the probe (ø12 mm) in a process pipe, please note that the nominal size of the pipe must be at least 1 inch (2.54 cm).
Appendix A _________________________________ Probe Installation Kits and Installation Examples NOTE The probe can be installed in the process through the ball valve assembly provided that the process pressure is less than 10 bars. This way, the process does not have to be shut down when installing or removing the probe. However, if the process is shut down before removing the probe, the process pressure can be max. 20 bars.
User's Guide _______________________________________________________________________ Meteorological Installation Kit (for HMT337) The Vaisala Meteorological Installation Kit HMT330MIK (Vaisala order code: HMT330MIK) enables the HMT337 to be installed outdoors to obtain reliable measurements for meteorological purposes. For more information, see HMT330MIK brochure and order form.
Appendix B _______________________________________________________ Calculation Formulas APPENDIX B CALCULATION FORMULAS This Appendix contains the formulas used for the calculated output quantities. The HMT330 series transmitters measure relative humidity and temperature. From these values dewpoint, mixing ratio, absolute humidity and enthalpy in normal pressure are calculated using the following equations: Dewpoint: Td = Tn m −1 Pw log A (1) Pw is the water vapor pressure.
User's Guide _______________________________________________________________________ Mixing ratio: P x = 621.99 × p-P w (2) w Absolute humidity: a = 216.68 ⋅ Pw T (3) Enthalpy: h = (T − 273.15) ⋅ (1.01 + 0.00189 ⋅ x) + 2.5 ⋅ x (4) The water vapor saturation pressure Pws is calculated by using two equations (5 and 6): 3 Θ = T − ∑ CiT i (5) i =o where: T Ci C0 C1 C2 C3 = = = = = = temperature in K coefficients 0.4931358 -0.46094296 * 10-2 0.13746454 * 10-4 -0.
Appendix B _______________________________________________________ Calculation Formulas The water vapor pressure is calculated using: Pw = RH ⋅ Pws 100 (7) Parts per million by volume is calculated using: ppmv = 106 ⋅ Pw ( p − Pw ) (8) Symbols: Td Pw Pws RH x p A T h = = = = = = = = = dewpoint temperature (°C) water vapor pressure (hPa) water vapor saturation pressure (Pa) relative humidity (%) mixing ratio (g/kg) atmospheric pressure (hPa) absolute humidity (g/m3) temperature (K) enthalpy (kJ/kg
User's Guide _______________________________________________________________________ This page intentionally left blank.
Appendix C _________________________________________________________ Modbus Reference APPENDIX C MODBUS REFERENCE This appendix describes the Modbus functions and data of the transmitter. Function Codes HMT330 supports all Modbus conformance class 0 and class 1 function codes defined in Open Modbus/TCP Specification, Release 1.0.
User's Guide _______________________________________________________________________ Register Map All data available via the Modbus interface is grouped in six contiguous blocks of registers as described in Table 40 below.
Appendix C _________________________________________________________ Modbus Reference NOTE A complete 32-bit floating point value should be read and written in a single Modbus transaction (e.g. function codes 05, 06, and 22 do not have an effect on floating point values). 16-Bit Integer Format 16-bit integer values are scaled to include the necessary decimals (see corresponding register table for the scaling factor).
User's Guide _______________________________________________________________________ use the floating point registers to write values outside this 16-bit signed integer range. Maximum writable value is 32767 also for configuration registers that do not accept negative values.
Appendix C _________________________________________________________ Modbus Reference NOTE Basic status information of the HMT330 transmitter is also available with the Read Exception Status function code 07. For details, see section Exception Status Outputs on page 204. Configuration Registers Configuration parameter registers are used to configure the measurement. Writing out-of-range values is silently ignored.
User's Guide _______________________________________________________________________ Other configuration settings are not usually needed and are not available using the Modbus interface. The service cable must be used to change other configuration settings if needed. Exception Status Outputs Exception status outputs (read with function code 07) tell the summary of the HMT330 transmitter status as described in Table 45 below.
Appendix C _________________________________________________________ Modbus Reference Code 13 (0x0D) 14 (0x0E) 15 (0x0F) Sub-Function Name Return Bus Exception Error Count Return Slave Message Count Return Slave No Response Count Notes Number of Modbus exception responses sent Number of Modbus messages processed Number of Modbus messages received without sending a response. This happens for received broadcast messages (Modbus RTU only) or when HMT330 is in the “Listen Only” mode.
User's Guide _______________________________________________________________________ Exception Responses Exception responses from the transmitter are according to the Modbus Application Protocol Specification V1.1b.
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