USER'S GUIDE Vaisala HUMICAP® Moisture and Temperature Transmitter for Oil MMT330 M210733EN-G
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 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 _______________________________________________________________________ Connections to a 24 VAC Power Supply ............................. 38 MMT332 for High-Pressure Applications............................. 39 MMT337 Small Pressure-Tight Probe ................................. 39 MMT337 Probe with Swagelok Connector for Tight-place Installations .......................................................................... 40 MMT338 for Pressurized Pipelines .....................................
_________________________________________________________________________________ Using the Service Port ................................................... 82 LAN Communication .............................................................. 82 IP Configuration .................................................................. 83 Using Display/Keypad .................................................... 84 Using Serial Line ............................................................
User's Guide _______________________________________________________________________ INTV ............................................................................. 110 SDELAY ....................................................................... 111 ECHO ........................................................................... 111 Data Recording ..................................................................... 111 Selecting Data Recording Quantities ................................ 112 DSEL ....
_________________________________________________________________________________ Setting Oil Coefficients Using Serial Line ......................... 140 OIL ..................................................................................... 140 Using Display/Keypad ....................................................... 141 Determination of Oil-Specific Coefficients ........................ 141 CHAPTER 7 MAINTENANCE ......................................................................................
User's Guide _______________________________________________________________________ MMT337 ....................................................................... 160 MMT338 ....................................................................... 160 Inputs and Outputs ............................................................ 161 Mechanics ......................................................................... 161 Technical Specifications of Optional Modules ...................
_________________________________________________________________________________ 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 Fi
User's Guide _______________________________________________________________________ Figure 51 Figure 52 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 Wireless LAN Settings .............................................................. 87 Entering Network SSID ...................................
_________________________________________________________________________________ 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 Manual Revisions ..................
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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® Moisture and Temperature Transmitter for Oil MMT330.
User's Guide _______________________________________________________________________ Version Information Table 1 Manual Code M210733EN-G M210733EN-F Manual Revisions Description December 2013. This manual. Added new command descriptions: ALSEL, AOVER, CON, DSEND, and MODS. Updated technical specification. Updated FILT command description. Various small corrections. Previous version. Applicable from transmitter software version 5.10 onward. Added Modbus protocol. Updated serial line command descriptions.
Chapter 1 _________________________________________________________ General Information Safety The Vaisala HUMICAP® Moisture and Temperature Transmitter for Oil MMT330 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® Moisture and Temperature Transmitter for Oil MMT330 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® Moisture and Temperature Transmitter for Oil MMT330 is protected by, for example, the following patents and their corresponding national rights: Finnish patent 98861, French patent 6650303, German patent 69418174, Japanese patent 3585973, UK patent 0665303, and U.S. patent 5607564. Trademarks HUMICAP® is a registered trademark of Vaisala Oyj.
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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® Moisture and Temperature Transmitter for Oil MMT330. Introduction to MMT330 The MMT330 transmitter is a microprocessor based instrument for the measurement of moisture in terms of water activity for example in the lubrication of circulation systems or in transformer oil.
User's Guide _______________________________________________________________________ Basic Features and Options - Several probes for various applications User-friendly display and keypad interface (optional) Different probe mounting kits and probe cable lengths Transmitter mounting kits for multiple installation purposes Support for Modbus serial communications protocol USB connectivity for service connections via the optional USB-RJ45 cable - Optional modules: - Isolated power supply - Power supply modul
Chapter 2 ___________________________________________________________ Product Overview 0604-006 Figure 2 Inside the Transmitter The following numbers refer to Figure 2 above: 1 2 3 4 = = = = 5 6 7 8 9 10 = = = = = = 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) Humidity p
User's Guide _______________________________________________________________________ Probe Options 0509-143 Figure 3 Probe Options The following numbers refer to Figure 3 above: 1 2 3 = MMT332 for high-pressure applications = MMT337 small pressure-tight probe = MMT338 adjustable probe for pressurized pipelines (40 bar, ball valve) For probe cable lengths, see Table 32 on page 162.
Chapter 2 ___________________________________________________________ Product Overview Typical Applications Method Used for Measuring Moisture in Oil The MMT330 transmitter measures water in oil in terms of water activity (aw) which can be determined as follows: water activity indicates the amount of oil in the scale of 0 - 1 aw. In this scale, 0 aw is an indication of completely water free oil and 1 aw an indication of oil fully saturated with water. Water is present in free form.
User's Guide _______________________________________________________________________ Transformer Oil The determination of moisture in oil is an essential part of a comprehensive transformer maintenance program. Aging and deterioration increase the capacity of oil to absorb water. The primary interest in transformers is to measure the water not in oil but in the cellulosic insulation around the transformer windings. Heating and cooling have a considerable effect on moisture levels in oil.
Chapter 2 ___________________________________________________________ Product Overview WATER SOLUBILITY IN MINERAL TRANSFORMER OIL 10000 1000 average water solubility range of variation due to oil type range of variation due to oil type 100 10 0 10 20 30 40 50 60 70 80 90 100 Temperature (°C) 0510-029 Figure 4 The Water Solubility of Transformer Oils versus Temperature The margins show the range of variation of water solubility found in mineral oils.
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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 Standard Mounting Mount the housing by fastening the transmitter to the 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 Mounting with DIN Rail Installation Kit DIN rail installation kit includes a wall mounting kit, 2 clip-fasteners, and 2 screws M4 x 10 DIN 7985 (Vaisala order code: 215094). 1. 2. 3. Attach two spring holders to the plastic mounting plate by using the screws provided in the installation kit. Fasten MMT330 to the plastic mounting plate with 4 screws (provided).
User's Guide _______________________________________________________________________ 0503-007 Figure 10 Horizontal Pole The following number refers to Figure 10 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.
Chapter 3 ________________________________________________________________ Installation 0509-051 Figure 12 Dimensions of 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.
User's Guide _______________________________________________________________________ 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.
Chapter 3 ________________________________________________________________ Installation 0804-083 Figure 15 Panel Mounting Dimensions (mm/inch) Wiring Cable Bushings A single electrical cable with a 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.
User's Guide _______________________________________________________________________ NOTE When there is high electric noise level (for example, near 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.
Chapter 3 ________________________________________________________________ Installation Refer to Figure 17 on page 34 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).
User's Guide _______________________________________________________________________ Signal and Power Supply Wiring When connecting transmitter with 8-pin connector, see section 8-Pin Connector on page 65. When wiring the power supply module, see section Power Supply Module on page 48. 0506-028 Figure 18 Screw Terminal Block on Motherboard The following numbers refer to Figure 18 above: 1 2 3 = = = Power supply terminals 10 ...
Chapter 3 ________________________________________________________________ Installation 1. 2. 3. 4. 5. 6. 7. Open the transmitter cover by taking out the four cover screws. Insert the power supply wires and signal wires through the cable bushing in the bottom of the transmitter; see the grounding instructions in the previous sections. Connect the analog output cables to terminals: Ch1 +, Ch1-, Ch2+, Ch2-. Connect the RS-232 user port cables to terminals RxD, GND and TxD.
User's Guide _______________________________________________________________________ Connections to a 24 VAC Power Supply Separate floating supply for each transmitter is recommended (see the upper part of Figure 19 on page 38). If you have to connect several transmitters or other instruments to one AC supply, the phase (~) must always be connected to the (+) connector of each transmitter (see the lower part of Figure 19).
Chapter 3 ________________________________________________________________ Installation MMT332 for High-Pressure Applications The MMT332 probe is a small, pressure-tight probe equipped with an installation flange. It is suitable for high-pressure applications; up to 250 bar.
User's Guide _______________________________________________________________________ MMT337 Probe with Swagelok Connector for Tight-place Installations Swagelok installation kit for the MMT337 probe includes Swagelok connector with ISO3/8" thread ( Vaisala order code: SWG12ISO38) or NPT1/2" thread (Vaisala order code:SWG12NPT12).
Chapter 3 ________________________________________________________________ Installation 1. Preparing installation. The connector options are the following: a. R3/8" ISO (Swagelok code SS-12M0-1-6RTBT) b. 1/2" NPT (Swagelok code SS-12M0-1-8BT) Note that the connector inner diameters extend for Ø12 mm probe. 2. 3. Probe position. Before the final tightening check that the upper edge of the connector nut is in line with the upper edge of the probe. Otherwise the sealing may not be gas tight.
User's Guide _______________________________________________________________________ MMT338 for Pressurized Pipelines Due to the sliding fit, the MMT338 is easy to install into and remove from the pressurized process. The probe is especially suitable for the measurements in pipelines. The probe is adjustable, with two length options. The installation is easy due to the ball valve installation kit; see below.
Chapter 3 ________________________________________________________________ Installation 0507-025 Figure 24 Sealing of Fitting Body into Process Tightening the Clasp Nut 1. 2. 3. 4. 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 spanner, tighten the nut to max 45 ±5 Nm (33 ±4 ft-lbs).
User's Guide _______________________________________________________________________ CAUTION Take care not to damage the probe body. A damaged body makes the probe less tight and may prevent it from going through the clasp nut. 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. NOTE Take care not to over tighten the clasp nut to avoid difficulties when opening it.
Chapter 3 ________________________________________________________________ Installation 0507-043 Figure 26 Installing the MMT338 Probe through a Ball Valve Assembly The following numbers refer to Figure 26: 1 2 3 4 5 6 7 8 = = = = = = = = Manual press tool Handle of the ball valve Probe Process chamber or pipeline Groove on the probe indicates the upper adjustment limit Filter Ball of the ball valve Fitting screw NOTE The probe can be installed in the process through the ball valve assembly provided
User's Guide _______________________________________________________________________ Follow the steps below to install the MMT338 probe through a ball valve assembly. After the installation, the probe should be sitting in the process chamber or pipeline as shown in Figure 26 on page 45. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. NOTE Shut down the process if the process pressure is more than 10 bars. If the pressure is lower there is no need to shut down the process. Close the ball valve.
Chapter 3 ________________________________________________________________ Installation Sampling Cell for MMT338 It may be necessary to use a sampling cell if the MMT338 probe cannot be installed directly into the process pipe, for example, if the pipe is too small for the probe. Then, a by-pass sampling line may be feasible. Sampling Cell with Swagelok Connectors (Vaisala order code: DMT242SC2) is available as an optional accessory.
User's Guide _______________________________________________________________________ Optional Modules Power Supply Module The AC (mains) power connection may be connected to the power supply module only by an authorized electrician. A readily accessible disconnect device shall be incorporated in the fixed wiring.
Chapter 3 ________________________________________________________________ Installation 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. To attach the module fasten the power module to the bottom of the housing with four screws. See the position in Figure 2 on page 21.
User's Guide _______________________________________________________________________ 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 MMT330 montiert ist. - Das Erdungskabel muss zum Schutz immer angeschlossen sein.
Chapter 3 ________________________________________________________________ Installation 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.
User's Guide _______________________________________________________________________ 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 MMT330 siųstuve, nejunkite jo į elektros tinklą.
Chapter 3 ________________________________________________________________ Installation Galvanic Isolation for Power Supply If galvanic isolation of the power supply line from the output signals is needed, MMT330 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.
User's Guide _______________________________________________________________________ Installation and Wiring 1. 2. 3. 4. 5. 6. 7. Disconnect the power. In case the analog output module is installed in the factory, continue with the step 4. To attach the module, 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 21. Connect the flat cable between the analog output module and the motherboard's connector for MODULE 2.
Chapter 3 ________________________________________________________________ Installation Relays MMT330 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 162. 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.
User's Guide _______________________________________________________________________ 0503-037 Figure 32 Relay Module The following numbers refer to Figure 32 above: 1 = Indication led for the relay 1 or 3 2 = Relay test buttons 3 = Flat cable pins 4 = Indication led for relay 2 or 4 WARNING The relay module may contain dangerous voltages even if the transmitter power has been disconnected.
Chapter 3 ________________________________________________________________ Installation 2 3 1 1102-023 Figure 33 RS-422/485 Module The following numbers refer to Figure 33: 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-.
User's Guide _______________________________________________________________________ Table 6 6. Connecting the Twisted Pair Wires to the Screw Terminals Screw Terminal Data line (2-wire RS-485) Data line (4-wire RS-422/485) 1 2 3 4 5 Rx D0Rx D1+ Common Tx D0Tx D1+ (not connected) (not connected) Common D0D1+ To avoid problems in the RS-422/485 network, the Common terminal should be wired to the corresponding terminals of the other devices.
Chapter 3 ________________________________________________________________ Installation 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.
User's Guide _______________________________________________________________________ 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+ Stub RS485-1 120R Termination 1102-027 Figure 35 2-Wire RS-485 Bus Table 8 2-Wire (Switch 3: Off) RS-485 master D
Chapter 3 ________________________________________________________________ Installation 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.
User's Guide _______________________________________________________________________ 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.
Chapter 3 ________________________________________________________________ Installation NOTE The default country setting for the WLAN interface is United States, which limits the operation to WLAN channels 1 ... 11. To enable additional channels (12 ... 14), you can change the country setting using the web configuration 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.
User's Guide _______________________________________________________________________ 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.
Chapter 3 ________________________________________________________________ Installation 8-Pin Connector 1104-126 Figure 39 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 +
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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. 0706-047 Figure 41 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 Menu PIN Lock You can prevent unauthorized changes of the device settings by activating the menu PIN lock. When this function is activated, the basic display, graphical view, and device information displays are available, but access to the menus is locked. The key symbol indicates the activation of this feature. 1. 2. 3. 4. 5. Open the Main Menu by pressing any of the ▲▼◄► arrow buttons.
User's Guide _______________________________________________________________________ Display Alarms The Display Alarm feature provides two independently configurable alarms for transmitters with the display/keypad option. Each alarm tracks a selected quantity, with freely configurable limit values. Each alarm also has a configurable hysteresis value to prevent unnecessary triggering when the measurement fluctuates around an alarm limit.
Chapter 4 _________________________________________________________________ Operation relay outputs as alarm outputs by configuring them separately; see section Setting Relay Outputs on page 125. Configuring a Display Alarm 1. 2. Enter the Main Menu by pressing an arrow key on the keypad. Use the arrow keys to select Display, followed by Alarms, to open the Display Alarms menu. The Display Alarms menu shows the currently enabled and disabled alarms. 0802-069 Figure 45 3.
User's Guide _______________________________________________________________________ 6. 7. 8. Set a suitable Hysteresis value to prevent the alarm from being triggered unnecessarily by small measurement changes that pass the alarm limit repeatedly. Set or clear the Alarm enable checkbox to enable or disable the alarm. Press the Exit button to leave the alarm configuration screen and return to the basic view. Using Serial Line Use the serial line command ALSEL to view or set the display alarms.
Chapter 4 _________________________________________________________________ Operation Table 13 Name above below hyst enabl ALSEL Parameters Description If specified, the alarm goes off when the quantity value rises above the exact value of this setpoint. However, if above < below, the alarm goes off at (above + hyst) and (below – hyst) instead. Cannot be set for fault and online alarms. If specified, the alarm goes off when the quantity value decreases below the exact value of this setpoint.
User's Guide _______________________________________________________________________ MI70 Link Program for Data Handling MI70 Link is a support program that enables you to handle the measurement data of your Vaisala transmitter using a Windows PC. Using the MI70 Link you can, for example: - Monitor the transmitter’s measurement readings directly using the real-time window function.
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. Service port is always available with fixed serial settings.
User's Guide _______________________________________________________________________ User Port Connection Use suitable serial cable between the user port RxD, GND and TxD screw terminals and the PC serial port, see Figure 48 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. Open the screws on the transmitter cover, and open the cover. 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 47 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 104.
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.
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 54 Web Configuration Interface for LAN Terminal Program Settings The instructions below describe how to connect to the MMT330 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 55 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 _______________________________________________________________________ Opening a Telnet session (LAN/WLAN) NOTE The instructions below assume that the LAN/WLAN interface on the transmitter is correctly configured and the network connection is already done. 1. 2. 3. Power up the instrument and start the PuTTY application. If your transmitter acquires a network address using DHCP, wait for a minute for this to complete, then verify the address from the transmitter.
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 20 Data Recording Commands Command DIR PLAY [0 ...
Chapter 4 _________________________________________________________________ Operation Table 24 Other Commands Command ? ?? ALSEL CON ECHO [ON/OFF] ERRS FILT FIND HELP LIGHT LOCK MODBUS MODS OIL VERS 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 addresses List the currently available co
User's Guide _______________________________________________________________________ - Outputting interval can be changed with the INTV command. - Output message format can be changed with the FORM command. 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.
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 and FDATE commands described in this section, you can use the FORM command with modifiers TIME and DATE. See section FORM on page 100. FTIME and FDATE FTIME and FDATE commands will enable/disable output of time and date to the serial line.
Chapter 4 _________________________________________________________________ Operation General Settings Changing Quantities and Units To change quantities and units use serial commands or the optional display/keypad. The MMT330 measures the following quantities: NOTE - Water activity (aw) - Temperature (T) (metric unit: ºC, non-metric unit:ºF) - ppm for transformer oil only (H2O) Only the quantities selected when ordering the device can be selected as display output quantities.
User's Guide _______________________________________________________________________ Using Serial Line FORM Use the serial line command FORM to change the format or select a certain quantities for the output commands SEND and R. FORM [x] where x = Formatter string If no formatter string is entered, the command will display the currently active formatter string. Note that the hash symbol "#" is shown as a backslash "\" when viewing the current formatter string.
Chapter 4 _________________________________________________________________ Operation OK >send Oil ppm= > 16.6 ppm Command 'FORM /' will return the default output format. The default output format depends on the device configuration. >form / OK >send aw= 0.087 T= 24.
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 26 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 Example: >? MMT330 / 2.04 Serial number : Batch number : Adjust. date : Adjust.
User's Guide _______________________________________________________________________ HELP Use the HELP command to list the 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 MMT330 / 5.10 > Resetting Transmitter by Using Serial Line RESET 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/RS-485 interface) has been installed, the user port is not accessible.
Chapter 4 _________________________________________________________________ Operation The new user port settings set using the display/keypad are effective immediately. 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 _______________________________________________________________________ Table 27 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. RUN POLL MODBUS Must be read from the transmitter using Modbus protocol. Available Commands All (default mode). All. Only command S. SEND [addr] and OPEN [addr].
Chapter 4 _________________________________________________________________ Operation Example (setting the output interval to 10 minutes): >intv 10 min Output interval: 10 min > SDELAY With the SDELAY command you can set delay (response time) for user port, or view currently set delay value. Adjusting the delay may be needed when half-duplex communication (typically two-wire RS-485) is used. The delay value corresponds to tens of milliseconds (for example, 5 = 0.050s minimum answer delay).
User's Guide _______________________________________________________________________ Selecting Data Recording Quantities If the device is provided with the optional display, the recorded quantities are always those selected for the display. Up to three quantities can be recorded at a time. See section Changing Quantities and Units on page 99 for instructions on how to select the display quantities with the keypad.
Chapter 4 _________________________________________________________________ Operation number of recorded files to seven for each quantity. Thus, the total amount of the files varies between 6 and 21. See Table 11 on page 68. Select, for example, three quantities (aw, T and H2O). 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 53. 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 21 (DIP switches for analog output settings). 1. 2.
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 outputs 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 59 Measurement-Based Relay Output Modes 122 __________________________________________________________________ M210733EN-G
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 60 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 28 Relay State Examples Criterion for Relay Activation Transmitter Operation Status NC-C Connected NO-C Connected Not chosen Power off aw below 0.5* aw above 0.5* Measured aw above 0.5 Measured aw below 0.5 Measured aw above 0.5 Measured aw below 0.
User's Guide _______________________________________________________________________ 0509-142 Figure 61 Relay Indicators on Display The following number refers to Figure 61 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 RSEL Use the serial line to select the quantity, setpoints and hysteresis or enable/disable the relay outputs. Enter the RSEL command. RSEL [q1 q2 q3 q4] where q1 q2 q3 q4 = = = = Quantity for the relay 1 or Fault/Online Quantity for the relay 2 or Fault/Online Quantity for the relay 3 or Fault/Online Quantity for the relay 4 or Fault/Online Factory setting: All relays disabled.
User's Guide _______________________________________________________________________ Example of normal limit switch: Selecting relay 1 to follow aw, relay 2 to follow temperature, relay 3 to follow online status, and relay 4 to follow fault status. >rsel aw t online fault Rel1 aw above: 0.00 ? 0.8 Rel1 aw below: 0.00 ? 1.0 Rel1 aw hyst : 0.00 ? 0.01 Rel1 aw enabl: ON ? Rel2 T above: 0.00 'C ? 30 Rel2 T below: 0.00 'C ? 60 Rel2 T hyst : 0.
Chapter 4 _________________________________________________________________ Operation 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 RTEST Use the serial line command RTEST to test the operation of the relays.
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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 MMT330 transmitter can be accessed using the Modbus serial communication protocol. Support for Modbus protocol is available on all MMT330 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 MMT330, 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) 1. 2. 3. Open the Main Menu by pressing any of the ▼▲◄► arrow buttons. Navigate to Interfaces ► Serial Interface.
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 63 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 64 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 For a description of the available settings, see section Wireless LAN Configuration on page 86. 8. Modbus configuration is now complete. Reset or power cycle the transmitter to enable the Modbus mode, and proceed with the installation of the transmitter. Diagnostic Modbus Counters MMT330 has diagnostic counters that can be used to pinpoint Modbus problems.
User's Guide _______________________________________________________________________ The last message displayed may be incomplete if there is active Modbus traffic while using the MODBUS command. Modbus RTU only: If the last received message was rejected because of bad CRC checksum, the MODBUS command displays the message with corrected CRC (last two bytes updated).
Chapter 6 ____________________________________________________________ ppm Conversion CHAPTER 6 PPM CONVERSION This chapter contains information on conversion models. MMT330 ppm Conversion for Transformer Oils Traditionally, moisture in transformer oil is measured by using ppm units. The ppm output shows the average mass concentration of water in oil. Vaisala has this conversion readily available for mineral transformer oils.
User's Guide _______________________________________________________________________ Conversion Model with Oil-specific Coefficients For additional accuracy, oil-specific conversion model can be used both for mineral and silicon based oils. An oil sample has to be sent to Vaisala for modelling. As a result, the specific coefficients (A and B, see formula 1) for the transformer oil are determined by Vaisala. For additional information, please contact Vaisala.
Chapter 6 ____________________________________________________________ ppm Conversion Using Display/Keypad 1. 2. 3. 4. 5. 6. Press any of the arrow buttons to open the Main Menu. Select Measuring by pressing the ► arrow button. Select Oil coefficients by pressing the ► arrow button. Press SET. Set the upper value A by using the ▲▼buttons. Confirm by pressing OK. Use the ▼ button to choose B. Press SET. Set the lower value B by using the ▲▼buttons. Confirm by pressing OK.
User's Guide _______________________________________________________________________ NOTE If the oil sample is very dry and the temperatures are close to each other, it may cause inaccuracy to the calculation model. In order to get the best possible performance it is recommended to use oil conditions that represent real conditions in application. Recommended values for sample are aw approx. 0.5 at 20 °C. 3. A= Define the correlation between aw, T and PPM (w/w) from the measured values.
Chapter 7 _______________________________________________________________ Maintenance CHAPTER 7 MAINTENANCE This chapter provides 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. Clean the sensor before storing the MMT330 probe and before calibration. For cleaning of the probe you need instrument air and heptane (C7H16) liquid.
User's Guide _______________________________________________________________________ Changing the Sensor The user can change HUMICAP® 180L2 sensors. Changing the sensor should be considered corrective maintenance, and it is not necessary in normal operation. If the accuracy of the transmitter does not seem to be within specification, it is more likely that the transmitter is in need of calibration and adjustment, and not sensor replacement. Refer to chapter Calibration and Adjustment on page 149. 1. 2. 3.
Chapter 7 _______________________________________________________________ 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 120.
User's Guide _______________________________________________________________________ Table 30 Error Code E0 E1 E2 E3 E4 E5 E6 Error Messages Error Message Humidity sensor measurement malfunction. Humidity sensor short circuit Humidity sensor open circuit Temperature sensor open circuit. Temperature sensor short circuit. Temperature measurement malfunction Temperature sensor current leak.
Chapter 7 _______________________________________________________________ Maintenance Technical Support For technical questions, contact the Vaisala technical support by e-mail at helpdesk@vaisala.com.
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Chapter 8 ___________________________________________________ Calibration and Adjustment CHAPTER 8 CALIBRATION AND ADJUSTMENT This chapter provides information that is needed in calibration and adjustment of the product. The MMT330 is fully calibrated and adjusted as shipped from factory. The calibration interval depends on the application. When measuring moisture in transformer oil, the recommended calibration interval is 3 years.
User's Guide _______________________________________________________________________ Cleaning the Sensor Clean the sensor before storing the MMT338 probe and before calibration. For cleaning of the probe you need instrument air and heptane liquid. Dry with instrument air to prevent oxidation of the oil on the sensor. The oxidation of the oil on the sensor can cause extended response times or drifting. 1. 2. 3. Blow the probe with instrument air (with the filter attached) to remove the remains of the oil.
Chapter 8 ___________________________________________________ Calibration and Adjustment 0706-007 Figure 70 Adjustment Menu Table 31 Indicator Led Functions Indicator Led Function LED off LED on LED blinking evenly Description adjustment locked adjustment available measurement not stabilized 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). LiCl reference 1.
User's Guide _______________________________________________________________________ 7. 8. Wait at least 30 minutes for the sensor to stabilize (the indicator LED is lit continuously). Adjustment cannot be done if the conditions are not stabilized (indicator LED is flashing). Press the button NaCl 75 % to adjust the 75 %RH condition. After adjustment transmitter returns to normal operation mode (indicator LED is unlit).
Chapter 8 ___________________________________________________ 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. Connect the MMT330 to a PC. See section Serial Line Communication on page 78. Open a terminal program. Press the ADJ button. Remove the filter from the probe and insert the probe into a measurement hole of the dry end reference chamber (for example, LiCl: 11 %RH in the humidity calibrator HMK15).
User's Guide _______________________________________________________________________ RH RH OK > 11. 12. 13. : : 75.55 75.59 Ref2 ? c Ref2 ? 75.5 indicates that the adjustment has succeeded and the new calibration coefficients are calculated and stored.Enter the adjustment information (date and text) to the memory of the transmitter, see the commands CTEXT and CDATE. Press the ADJ button on the motherboard to close the adjustment mode.
Chapter 8 ___________________________________________________ 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 _______________________________________________________________________ Using Serial Line 1. 2. 3. 4. Press the ADJ key on the motherboard to open the adjustment mode. Remove the probe filter and insert the probe into the reference temperature. Enter the command CT and press ENTER. 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.
Chapter 8 ___________________________________________________ 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 MMT330 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 104.) 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 arrow ► button. Select Date, press SET. Give the date by using the arrow buttons. Press OK.
Chapter 9 _____________________________________________________________ Technical Data CHAPTER 9 TECHNICAL DATA This chapter provides the technical data of the product. Specifications Performance Water Activity Water activity Measurement range 0 ... 1 aw Accuracy (including non-linearity, hysteresis and repeatability) 0 ... 0.9 ±0.02 0.9 ... 1.0 ±0.03 Response time (90%) at +20 °C in still oil (with stainless steel filter) 10 min. Sensor HUMICAP® Temperature Measurement range MMT332 -40 ...
User's Guide _______________________________________________________________________ Operating Environment Operating temperature for probes for transmitter body with display Storage temperature without display with display Pressure range for probes Electromagnetic compatibility same as measurement ranges -40 ... +60 °C (40 ... +140°F) 0 ... +60 °C (+32 ...
Chapter 9 _____________________________________________________________ Technical Data Inputs and Outputs Operating voltage with optional power supply module Power consumption @ 20 °C (Uin 24VDC) RS-232 Uout 2 x 0 ... 1V / 0 ... 5V / 0 ... 10V Iout 2 x 0 ... 20 mA display and backlight Analog outputs (2 standard, 3rd optional) current output voltage output Accuracy of analog outputs at 20 °C Temperature dependence of the analog outputs External loads current ouputs 0 ... 1V output 0 ... 5V and 0...
User's Guide _______________________________________________________________________ Table 32 Standard Probe Cable Lengths and Approximate Transmitter Weight (in kg/lb) Probe Type Probe Cable Length 2m 5m MMT332 1.1/2.4 1.2/2.6 MMT337 1.2/2.6 1.3/2.9 MMT338 232 mm 1.3/2.9 1.5/3.3 MMT338 454 mm 1.4/3.1 1.6/3.5 10 m 1.5/3.3 1.5/3.3 1.7/3.7 1.9/4.2 15 m 2.2/4.9 20 m 2.1/4.5 2.5/5.
Chapter 9 _____________________________________________________________ Technical Data Relay Module Operating temperature range Operating pressure range Power consumption @24 V Contacts SPDT (change over), for example, Contact arrangement Form C Imax Imax Safety standard for the relay component Storage temperature range 3-pole screw terminal / relay max wire size -40 ... +60 ºC (-40...+140 ºF) 500 ... 1300 mmHg max 30 mA 0.5 A 250 VAC 0.5 A 30 VDC IEC60950 UL1950 -55 ... +80 ºC (-67...+176 ºF) 2.
User's Guide _______________________________________________________________________ Data Logger Module Operating temperature range Storage temperature range Power consumption @ 24V Logged parameters Logging interval Maximum logging period Logged points Accuracy of the clock Battery lifetime at -40 ... +30 ºC (-40 ... +86 ºF) at +30 ... +60 ºC (+86 ... +140 ºF) -40 ... +60 ºC (-40 ... +140 ºF) -55 ... +80 ºC (-67 ...
Chapter 9 _____________________________________________________________ Technical Data Description Swagelok for 12mm Probe 1/2" NPT Thread MMT338 Fitting Body ISO1/2 Solid Structrure Fitting Body NPT1/2 Solid Structure Sampling Cell with Swagelok Connectors Ball Valve ISO1/2 with Welding Joint Manual Press Plug Kit (ISO 1/2) CONNECTION CABLES Serial Interface Cable USB-RJ45 Serial Interface Cable MI70 Connection Cable with RJ45 Connector Order Code SWG12NPT12 DRW212076SP NPTFITBODASP DMT242SC2 BALLVALVE-1
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 9 _____________________________________________________________ Technical Data 92 (3.62) 116 (4.57) 183 (7.
User's Guide _______________________________________________________________________ MMT332 0509-149 Figure 75 MMT332 Probe Dimensions MMT337 0509-146 Figure 76 MMT337 Probe Dimensions 168 __________________________________________________________________ M210733EN-G
Chapter 9 _____________________________________________________________ Technical Data MMT337 with Swagelok Connector 0509-148 Figure 77 MMT337 Probe with (Optional) Swagelok Connector, Dimensions MMT338 0509-145 Figure 78 MMT338 Probe with Stainless Steel Filter (Oil Filter), Dimensions VAISALA _______________________________________________________________________ 169
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Appendix A _________________________________________________________ Modbus Reference APPENDIX A MODBUS REFERENCE This appendix describes the Modbus functions and data of the transmitter. Function Codes MMT330 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 35 below.
Appendix A _________________________________________________________ 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 _______________________________________________________________________ Measurement Data (Read-Only) Table 36 Measurement Data Registers Name T aw H2O Float 0003…0004 0029…0030 0035…0036 Integer 0258 (×0.01) 0271 (×0.0001) 0274 (×1) Unit °C ppm Available measurements depend on the instrument configuration. Values may be unavailable also in case of device failure. Read status registers or exception status outputs to check for failures.
Appendix A _________________________________________________________ Modbus Reference Configuration Registers Configuration parameter registers are used to configure the measurement. Writing out-of-range values is silently ignored. Table 38 Configuration Parameter Registers Name Pressure setting default value Pressure setting temporary value Oil-A Oil-B Float 0769…0770 Integer 1025 (×1) Valid Range 0…9999 hPa 0771…0772 1026 (×1) 0…9999 hPa 0777…0778 0779…0780 1029 (×0.01) ±99999.99 1030 (×0.
User's Guide _______________________________________________________________________ Status information is available also with register access; see section Status Registers (Read-Only) on page 174. Diagnostic Sub-Functions MMT330 supports some of the Modbus diagnostic functions described in the Modbus Application Protocol Specification V1.1b. These diagnostic functions are accessed with function code 08. See Table 41 below for details.
Appendix A _________________________________________________________ Modbus Reference NOTE Resetting, powering up the transmitter, or reselecting the Modbus mode (by serial command or with the user interface) resets all Modbus diagnostic counters and cancels any “Listen Only” mode. Device Identification Objects MMT330 Modbus conforms to the extended identification level defined in the Modbus Application Protocol Specification V1.1b. Both stream access and individual access to the objects is supported.
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