USER’S GUIDE Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT360 M010056EN-J
PUBLISHED BY Vaisala Oyj Phone (int.): +358 9 8949 1 P.O. Box 26 Fax: +358 9 8949 2227 FI-00421 Helsinki Finland 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Contents of This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
________________________________________________________________________________ Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Installation in Hazardous Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 US and Canadian Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 European Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
________________________________________________________________________________ CHAPTER 6 CALIBRATION AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Calibration Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Factory Calibration and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 User Calibration and Adjustment . . . . . . . . .
________________________________________________________________________________ APPENDIX A DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 HMP361 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 HMP363 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
________________________________________________________________________________ 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 HMT360 and Probe Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Probe Options for HMT360 . . . . . . . . . . . . . .
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________________________________________________________________________________ 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 Manual Revisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Output Quantities for HMT360 . . . . . . . . . . . . . . . . . . . . .
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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 the Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT360. Contents of This Manual - - Chapter 1, General Information: This chapter provides general notes for the manual and the product.
User’s Guide ______________________________________________________________________ - - - Chapter 9, Technical Data: This chapter provides technical data of the product. Appendix A, Dimensions: This appendix contains parts drawings of the transmitter housing, probes and some transmitter mounting accessories with metric and nonmetric dimensions specified.
Chapter 1 ________________________________________________________ General Information Documentation Conventions Throughout the manual, important safety considerations are highlighted as follows: WARNING Warning alerts you to a serious hazard. If you do not read and follow instructions very carefully at this point, there is a risk of injury or even death. CAUTION Caution warns you of a potential hazard.
User’s Guide ______________________________________________________________________ ESD Protection Electrostatic Discharge (ESD) can cause immediate or latent damage to electronic circuits. Vaisala products are adequately protected against ESD for their intended use. However, it is possible to damage the product by delivering electrostatic discharges when touching, removing, or inserting any objects inside the equipment housing.
Chapter 1 ________________________________________________________ General Information Regulatory Compliances EU Declaration of Conformity The HMT360 series transmitters are in conformity with the provisions of the following EU directive(s): - ATEX Directive EMC Directive ROHS Directive Conformity is shown by compliance with the following standards: - EN 60079-0 EN 60079-11 EN 60079-26 EN 61326-1: Electrical equipment for measurement, control and laboratory use - EMC requirements - for use in industrial
User’s Guide ______________________________________________________________________ Trademarks HUMICAP® is a registered trademark of Vaisala Oyj. All other trademarks are the property of their respective owners. Software License This product contains software developed by Vaisala. Use of the software is governed by license terms and conditions included in the applicable supply contract or, in the absence of separate license terms and conditions, by the General License Conditions of Vaisala Group.
Chapter 2 __________________________________________________________ Product Overview CHAPTER 2 PRODUCT OVERVIEW This chapter introduces the features, advantages, and the product nomenclature. Introduction to HMT360 Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT360 contains reliable, microprosessor-based two-wire instruments for measuring relative humidity and temperature in hazardous areas.
User’s Guide ______________________________________________________________________ Output Quantities Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT360 is available either with or without a local display and with one or two current output channels.
Chapter 2 __________________________________________________________ Product Overview Probe Options The HMT360 series has various options for probes and cable lengths (2 m, 5 m and 10 m). The available probe types are presented in the figure below.
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Chapter 3 _______________________________________________________________ Installation CHAPTER 3 INSTALLATION This chapter provides you with information that is intended to help you install this product.
User’s Guide ______________________________________________________________________ Selecting Location Select a place with stable conditions for mounting the transmitter. Do not expose the transmitter to direct sunlight or rain. A rain shield is available and it is recommended for direct outdoor installations. When mounting the probe, select a place representing the process conditions.
Chapter 3 _______________________________________________________________ Installation Figure 4 0507-022 Vertical Mounting of Probe The following numbers refer to Figure 4 on page 21: 1 = To be sealed 2 = Insulate the cable 3 = To be insulated 4 = Let the cable hang loosely. This prevents condensed water running to the sensor along the cable If the process temperature is much higher than that of the environment, the whole probe and preferably plenty of cable must be inside the process.
User’s Guide ______________________________________________________________________ Checking the Temperature Reading The actual temperature of the process can be measured with a reference instrument to be compared with the transmitter reading. The heat transfer is less evident if you remove the protective filter of the sensor for a shortterm test. However, never use the sensor long periods without the filter as this may cause a faster contamination of the sensor.
Chapter 3 _______________________________________________________________ Installation Mounting the Transmitter Housing 1. 2. 3. Attach the mounting plate to the wall with 4 screws. Press down the transmitter so that it slides along the rails of the mounting plate. Fasten the transmitter to the mounting plate with the Allen screw (3 mm Allen key provided). The probe can be detached and replaced when needed by simply unfastening the two Allen screws.
User’s Guide ______________________________________________________________________ Figure 7 0603-038 Parts of the Transmitter The following numbers refer to Figure 7 on page 24: 1 = Electronics unit 2 = Probe; including a part of the measurement electronics (for example, calibration memory) 3 = Flat cable 4 = Transmitter base 5 = Grounding terminal 6 = Protective covers 7 = Cable glands 8 = Probe 9 = RS232C connector Probe Mounting CAUTION Do not unsolder and then resolder th
Chapter 3 _______________________________________________________________ Installation HMP363 for Confined Spaces The HMP363 is a small size (ø = 12mm) general-purpose probe suitable for ducts and channels with the installation kit available from Vaisala. The HMP363 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 ______________________________________________________________________ HMP364 for High-Pressure Applications The probe is provided with a nut, a fitting screw and a sealing washer. Keep the fitting screw and the nut in place on the body of the probe during handling to prevent damage to the highly polished surface of the probe. Follow the instructions below to achieve a leak-tight assembly.
Chapter 3 _______________________________________________________________ Installation Figure 9 0505-272 HMP364 Probe Mounting The following numbers refer to Figure 9 on page 27: 1 = Tightening cone 2 = Nut 3 = Fitting screw, M22×1.
User’s Guide ______________________________________________________________________ Figure 11 0505-274 Cleaning the Tightening Cone The following numbers refer to Figure 11 on page 28: 1 = Fitting screw 2 = Sealing washer 3 = Tightening cone 4 = 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.
Chapter 3 _______________________________________________________________ Installation HMP365 for High Temperatures HMP365 is installed similarly to the HMP363 probe but without the supporting bar. Refer to HMP363/365/367 Duct Installation Kit on page 25 for more information on the duct installation kit for HMP365. To avoid incorrect humidity readings, there must not be significant temperature differences between the inside and outside of the duct.
User’s Guide ______________________________________________________________________ HMP368 for Pressurized Pipelines or Moisture in Liquids Due to the sliding fit the HMP368 is easy to install into and remove from a pressurized process. The probe is especially suitable for measurements inside pipelines. See section Installing the HMP368 Probe Through a Ball Valve Assembly on page 32.
Chapter 3 _______________________________________________________________ Installation The following two fitting body options are available: - Fitting Body ISO1/2 solid structure Fitting Body NPT1/2 solid structure Table 4 CAUTION HMP368 Probe Dimensions Probe Type Probe Length Adjustment Range Standard Optional 178 mm 400 mm 120 mm 340 mm Take care not to damage the probe body. A damaged body makes the probe head less tight and may prevent it from going through the clasp nut.
User’s Guide ______________________________________________________________________ Figure 15 0505-276 Tightening the Clasp Nut The following numbers refer to Figure 15 on page 32: NOTE 1 = Probe 2 = Clasp nut 3 = Fitting screw 4 = Pen Take care not to tighten the clasp nut more than 60° to avoid difficulties when opening it.
Chapter 3 _______________________________________________________________ Installation Figure 16 0505-277 Installing the HMP368 Probe Through a Ball Valve Assembly The numbers below refer to Figure 16 on page 33: 1 = Manual press tool 2 = Handle of the ball valve 3 = Probe 4 = Process chamber/pipeline 5 = Groove on the probe indicating the upper adjustment limit 6 = Filter 7 = Ball of the ball valve NOTE The probe can be installed in the process through the ball valve assembly provi
User’s Guide ______________________________________________________________________ Follow the steps below to install the HMP368 probe through a ball valve assembly. After the installation, the probe should be sitting in the process chamber or pipeline as shown in Figure 16 on page 33. 1. 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. 2. Close the ball valve. 3.
Chapter 3 _______________________________________________________________ Installation Electrical Connections Refer to local requirements regarding cabling, grounding and galvanic isolator or barrier connections. WARNING Connect the transmitter always via galvanic isolators or Zener barriers in hazardous environments. WARNING Be sure that the main power switch of the transmitter is set off before making any electrical installations in hazardous areas. 1. 2. 3. 4. 5.
User’s Guide ______________________________________________________________________ Installation in Hazardous Locations US and Canadian Requirements USA (FM): Wiring for intrinsically safe operation is shown in Appendix B, Wiring for Intrinsically Safe Operation, FM, on page 91. Canada (CSA): Wiring for intrinsically safe operation is shown in Appendix C, Wiring for Intrinsically Safe Operation, CSA, on page 93.
Chapter 3 _______________________________________________________________ Installation Maximum Cable Resistance Calculation for the Barrier (Vaisala Order Code: 210664) General specifications of HMT360: Supply voltage Uin = 24 V (12 ... 35 V) Maximum current Iout = 20 mA Minimum operating voltage for HMT360 Umin = 12 V (15 V with serial port) Stahl 9001/51-280-091-141 (values taken from the specifications): Rated operating voltage UN = 20 ... 35 V Transmitter supply voltage US = UN - 9.
User’s Guide ______________________________________________________________________ If assuming that the operating voltage would be ≥ 24 V, the maximum acceptable voltage drop Udrop in cables is: Udrop = US - Umin Udrop = 14 V - 12 V = 2 V We also know that: Iout = 20 mA and that total resistance of the cable Rcabletot is cable resistance Rcable multiplied with the total maximum length of the cables lmax: Rcabletot = Rcable × lmax From these facts the following equation can be formed: Udrop = Rcabletot × I
Chapter 3 _______________________________________________________________ Installation HMT360 Connected to a Galvanic Isolator HAZARDOUS AREA SAFE AREA I a) current signal controller 0505-278 HAZARDOUS AREA SAFE AREA b) voltage signal controller Figure 17 0505-279 HMT360 Connected to Galvanic Isolator VAISALA _______________________________________________________________________ 39
User’s Guide ______________________________________________________________________ HMT360 Connected to a Zener Barrier HAZARDOUS AREA SAFE AREA a) current signal controller 0505-280 Figure 18 0505-281 HMT360 Connected to a Zener Barrier 40 ___________________________________________________________________ M010056EN-J
Chapter 3 _______________________________________________________________ Installation Examples of Connections 0505-282 Figure 19 STAHL 9160/13-11-11 (Galvanic Isolator) Figure 20 STAHL 9001/51-280-091-141 (Zener Barrier) 0505-283 VAISALA _______________________________________________________________________ 41
User’s Guide ______________________________________________________________________ Grounding When grounding the transmitter, follow the local requirements. Use at least 4 mm2 grounding cable when grounding the transmitter or barrier. Note that the allowed resistance between barrier and system ground must be less than 1 ohm.
Chapter 4 ________________________________________________________________ Operation CHAPTER 4 OPERATION This chapter contains information that is needed to operate this product. Local Interface HMT360 transmitter has four pushbuttons located on the housing cover. The transmitter can be ordered either with or without a local display.
User’s Guide ______________________________________________________________________ Power ON/OFF Open the transmitter cover and flip the internal power switch to position ON (up), see Figure 24 on page 62. WARNING Avoid static discharge. Always use a wet cloth for wiping the display. HMT360 with Display Measurement readings appear on the display after switching power ON. The analog output signals can be read from the system or load resistor. WARNING Avoid static discharge.
Chapter 4 ________________________________________________________________ Operation DIP Switch Functions The table below is also printed on the protection board: Figure 23 0505-285 DIP Switch Functions 1: Analog output test on/off If you turn the switch to on position (up), you can force the outputs to states 4 mA, 12 mA and 20 mA by pressing buttons Up and Dn on the cover. Outputs return to normal mode when switch is turned down. 2: Calibration Disabled/Enabled The EEPROMs are write protected.
User’s Guide ______________________________________________________________________ 6, 7 and 8: Select output quantities With the three DIP switches on the right, you can select the output quantities according to the table printed on the right side of the protective cover. Note that only the ordered quantities can be selected. The special option gives you the choice of setting any ordered quantity to each channel.
Chapter 4 ________________________________________________________________ Operation Selecting Output Quantities Upper Half of Display To modify the displayed quantity, turn the Calibration Enabled/Disabled DIP switch of the transmitter to position Enabled (up). Select the required quantity with button Up on the display cover, and acknowledge the value with button E. To complete the selections, turn the DIP switch back to position disabled (down).
User’s Guide ______________________________________________________________________ Selecting Analog Outputs You can select the output quantities for channels 1 and 2 by turning the Calibration Enabled/Disabled DIP switch of the transmitter to position Enabled (up) and the three output selection DIP switches to position special (all up). Press button C on the display cover: text "SCAL" appears on the display.
Chapter 4 ________________________________________________________________ Operation Scaling Analog Outputs Turn the internal Calibration Enabled/Disabled DIP switch of the transmitter to upward position (on). Press button C on the display cover and a text similar to the following appears: Numbers on the second line indicate the low end scaling of Ch 1 currently stored in the transmitter memory.
User’s Guide ______________________________________________________________________ Serial Interface WARNING The serial interface MUST NOT be used in hazardous areas. Use the serial interface for calibration and testing purposes in safe areas only. Always use the serial interface cable (optional accessory, Vaisala order code: 25905ZZ).
Chapter 4 ________________________________________________________________ Operation To start issuing commands, make sure that HMT360 is connected to a serial port of your computer and that the terminal session is open. Issue commands by typing them on your computer according to the following instructions. In these commands, stands for pressing Enter (on your computer keyboard).
User’s Guide ______________________________________________________________________ Example: >asel rh t Ch1 RH lo : 0.00 %RH Ch1 RH hi : 100.00 %RH Ch2 T lo: -40.00 ’C Ch2 T hi: 100.00 ’C > S Scaling Analog Outputs Syntax: S [zz aa.a bb.b] where zz = Quantity (RH, T, Td, x, a, Tw, ppm, aw, RS, Ts) aa.a = Lower limit of the quantity bb.
Chapter 4 ________________________________________________________________ Operation Adjustment Commands Turn the internal DIP switch Calibration Enabled/Disabled to position ON before the adjustment and return it to position OFF after the adjustment. CRH Relative Humidity Adjustment NOTE Read also the calibrator, for example HMK15, manual and refer to page 19 of that manual for more detailed instructions on salt bath calibration and adjustment.
User’s Guide ______________________________________________________________________ Output Commands ITEST Testing Analog Outputs NOTE Before giving command ITEST, reset the transmitter with command RESET, see section RESET Transmitter Reset on page 57. Syntax: ITEST [aa.aaa bb.bbb] where aa.aaa = Current value to be set for Ch 1 (mA) bb.
Chapter 4 ________________________________________________________________ Operation SEND Outputting Measurement Values Syntax: SEND This command outputs the measured values in one point. R Activating Continuous Output Syntax: R With the command R the transmitter outputs measured values continuously. S Stopping Continuous Output Syntax: S The continuous outputting is stopped with the command S. If outputting is active, this command is not echoed.
User’s Guide ______________________________________________________________________ PRES Setting Ambient Pressure for Calculations Syntax: PRES [aaaa.a] where aaaa.a = Pressure (bara) Turn the internal DIP switch Calibration Enabled/Disabled to position ON before setting the pressure and return it to position OFF after making the setting. Example: >pres 12 Pressure > Table 6 FROM hPa/ mbar TO mmHg/ Torr inHg atm bar psi : 12.
Chapter 4 ________________________________________________________________ Operation FILT Output Filtering Syntax: FILT [a.aaa] where a.aaa = 0.1 ... 1 1 = No filtering 0.5 = Average of last two measurements 0.1 = Average of ca. 16 measurements This commands sets the measurement result filtering. Example: >filt 1 Filter >filt 0.5 Filter >filt 0.1 Filter > : 1.0000 : 0.5000 : 0.1000 Resetting the Transmitter RESET Transmitter Reset Syntax: RESET This command resets the device.
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Chapter 5 __________________________________________________ Measuring at Overpressure CHAPTER 5 MEASURING AT OVERPRESSURE This chapter provides you with important information concerning measurement in conditions with pressure higher than the normal atmospheric pressure. The probes HMP364 and HMP368 are designed for humidity measurement at overpressure. The maximum measurement pressures depend on the probe as follows: HMP364: 0 ...
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Chapter 6 __________________________________________________ Calibration and Adjustment CHAPTER 6 CALIBRATION AND ADJUSTMENT This chapter contains instructions for checking the calibration and adjusting this product. In this User's Guide the term "calibration" refers to comparing the device's reading against a reference concentration. "Adjustment" refers to changing the device's reading to correspond to the reference concentration. Calibration Interval HMT360 is calibrated as shipped from the factory.
User’s Guide ______________________________________________________________________ First, the electronics unit is removed from the transmitter base to perform the calibration and adjustment in safe area. Second, the power supply and a multimeter is connected to the electronics unit according to the following instructions. Removing the Electronics Unit Figure 24 0603-040 Detaching the Electronics Unit with Probe for Calibration and Adjustment 1. 2. Unfasten the screws and open the cover.
Chapter 6 __________________________________________________ Calibration and Adjustment Connections On Off B1 C1 B2 C2 A1 A2 Figure 25 0505-293 1. 2. 3. Connecting Power Supply and Multimeter for Calibration Connect a power supply (12 ... 24 VDC, with a serial port the minimum supply voltage is 15 VDC ) to the terminals B1 (-) and C1 (+) (Ch 1) with banana plugs, see Figure 25 on page 63. Connect the multimeter in series with the supply, B1 (-) and A1 (+).
User’s Guide ______________________________________________________________________ Calculating Correspondence of Current Values and Output Quantities When using HMT360 without a display, calibration and adjustment is carried out by using a multimeter. Use the following equations to calculate the current values corresponding to the reference output quantities.
Chapter 6 __________________________________________________ Calibration and Adjustment Relative Humidity Adjustment Automatic Two-Point Adjustment (Only HMT360 with Display) The automatic adjustment procedure is a user friendly way to adjust the HMT360 with salt solutions; you do not have to feed the reference values to the HMT360. The transmitter displays the accurate value based on the measured temperature and the Greenspan table stored into the transmitter memory.
User’s Guide ______________________________________________________________________ Calibration enabled RH calibration on RH RH Set Lo Set Lo RH RH Set Lo Set Lo Wait RH RH RH Set Lo Set Lo Set Lo RH Set Lo Wait Restore swit ches Figure 26 0604-061 Display Chart of the Automatic Adjustment Procedure 66 ___________________________________________________________________ M010056EN-J
Chapter 6 __________________________________________________ Calibration and Adjustment Manual Adjustment This section contains separate manual adjustment procedures for transmitters with and without display. You can perform the low-end adjustment only (one-point adjustment), or adjust both low and high end of the measurement (two-point adjustment). NOTE If you use serial commands, please refer to section Adjustment Commands on page 53. Low End Adjustment (HMT360 without Display) 1. 2. 3. 4. 5. 6.
User’s Guide ______________________________________________________________________ High End Adjustment (HMT360 without Display) 1. 2. 3. 4. 5. After having made the low end adjustment, insert the probe into a measurement hole of the NaCl (75 %RH) salt chamber in the humidity calibrator. Please, note that the difference between the two humidity references must be at least 30 %RH. The LED indicator lights up. Wait at least 10 ...
Chapter 6 __________________________________________________ Calibration and Adjustment High End Adjustment (HMT360 with Display) 1. 2. 3. 4. 5. After having made the low end adjustment, insert the probe into a measurement hole of the NaCl (75 %RH) salt chamber in the humidity calibrator. Please, note that the difference between the two humidity references must be at least 30 %RH. The readings measured by the transmitter appear on the display, as well as the text "Set Hi" on the lower left hand corner.
User’s Guide ______________________________________________________________________ ACAL Analog Output Calibration Syntax: ACAL Connect HMT360 to a multimeter. Issue the ACAL command: 1. 2. 3. Disconnect the serial cable from the transmitter while reading the multimeter value for the Ch 1 (I1). Reconnect the serial cable. Type the multimeter reading and press Enter. Type the higher current multimeter reading and press Enter. Example: >acal Ch1 I1 ( mA Ch1 I2 ( mA > ) ) ? 4.846 ? 19.
Chapter 7 ______________________________________________________________ Maintenance CHAPTER 7 MAINTENANCE This chapter provides information that is needed in basic maintenance of the product. Periodical Checking and Cleaning Transmitter Housing and Probe WARNING Avoid static discharge. Always use a wet cloth for wiping the display. The electronics unit of the transmitter, as well as the probe, can be removed and replaced in the field.
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Chapter 8 ___________________________________________________________ Troubleshooting CHAPTER 8 TROUBLESHOOTING This chapter describes common problems, their probable causes and remedies, and contact information. Diagnostics Operation Errors The following symptoms indicate an operation error of the HMT360: - The analog output(s) current drops below 4 mA. Transmitters with display: Display shows an error code; see Table 7 on page 74.
User’s Guide ______________________________________________________________________ Table 7 Error Codes Error Code on Display Error Code on Serial Line Typical Cause RH error RH error T error T error HUMICAP® humidity sensor open circut or short circut. Can be caused by condensed water, or damage to sensor or probe. Pt100 temperature sensor open circut or short circuit. Can be caused by condensed water, or damage to sensor or probe. Probe module disconnected. Hardware failure in transmitter.
Chapter 9 ____________________________________________________________ Technical Data CHAPTER 9 TECHNICAL DATA This chapter provides technical data of the product. Performance Relative Humidity Table 8 Property Relative Humidity Specifications Description / Value Measurement range 0 ... 100 %RH Accuracy (including non-linearity, hysteresis and repeatability) for typical applications with HUMICAP® 180 for typical applications and HUMICAP® 180R ±1 %RH (0 ... 90 %RH) at +15 ... 25 °C ±1.7 %RH (90 ...
User’s Guide ______________________________________________________________________ Temperature (+ Operating Pressure Ranges) Table 9 Temperature Specifications Property Description / Value HMP361 HMP363 80 °C HMP363 120 °C HMP364 -40 ... +60 °C -40 ... +80 °C -40 ... +120 °C -70 ... +180 °C, 0 ... 10 MPa (0 ... 100 bar) -70 ... +180 °C -70 ... +180 °C -70 ... +180 °C, 0 ... 4 MPa (0 ... 40 bar) ± 0.
Chapter 9 ____________________________________________________________ Technical Data Water Activity in Jet Fuel Applications Table 10 Water Activity in Jet Fuel Applications Specifications Property Description / Value Measurement range 0 ... 1 aw at -40 ... +180 °C (40 ... +356 °F) Accuracy when calibrated against high quality, certified humidity standards ± 0.01 (0 ... 0.9) ± 0.02 (0.9 ... 1.
User’s Guide ______________________________________________________________________ Outputs Table 13 WARNING Output Specifications Property Description / Value Two analog outputs (one standard, one optional) Typical accuracy of analog outputs at +20 °C Typical temperature dependence of analog outputs RS232C serial output for service use only in safe area two wire 4 ... 20 mA ± 0.05 %/°C full scale ± 0.005 %/°C full scale connector type RJ45 Output connections are made via safety barriers.
Chapter 9 ____________________________________________________________ Technical Data Classification with Current Outputs Europe (VTT) EU (94/9/EC) II 1 G Ex ia IIC T4 Ga VTT 09 ATEX 028 X Safety factors Ui = 28 V, Ii = 100 mA, Pi = 700 mW Ci = 1 nF, Li negligibly low Environmental specifications Tamb = -40 ... +60 °C Dust classification (with protection cover 214101) II 1 D Ex ta IIIC T500 80 °C Da -40 °C ≤ Tamb ≤ +60 °C VTT 04 ATEX 023X IECEx (VTT) Ex ia IIC T4 Ga IECEx VTT 09.
User’s Guide ______________________________________________________________________ Canada (CSA) Class I Division 1 and Division 2 Groups A, B, C, D Class II Division 1 and Division 2 Groups G and Coal Dust Class III CSA File No: 213862 0 000 CSA report: 1300863 Safety factors Tamb = 60 °C, T4, Intrinsically safe when connected as per Installation Drawing DRW213478 China (PCEC) Ex ia II CT4 Certificate No. CE092145 Standard GB3836.1-2000 and GB3836.
Chapter 9 ____________________________________________________________ Technical Data Options and Accessories Table 15 Options and Accessories Item Description / Order Code SENSORS HUMICAP®180 15778HM HUMICAP 180R HUMICAP180R HUMICAP®180L2 HUMICAP180L2 ® FILTERS Sintered Stainless Steel Filter Stainless Steel Filter Stainless Steel Filter with Membrane PPS Plastic Grid with Stainless Steel Netting PPS Plastic Grid Filter HM47280SP HM47453SP 214848SP DRW010281SP DRW010276SP TRANSMITTER MOUNTING
User’s Guide ______________________________________________________________________ Table 15 Options and Accessories (Continued) Item Description / Order Code Swagelok for 12mm Probe 1/2" NPT SWG12NPT12 Thread HMT368/HMP368 Fitting Body ISO1/2 Solid Structure Fitting Body NPT1/2 Solid Structure Fitting Body Set ISO 1/2 Fitting Body Set (ISO 1/2 + NPT 1/2) Leaking Screw with Allen Key Thread Adapter ISO1/2 to NPT1/2 Sampling Cell with Female Connectors Sampling Cell with Swagelok Connectors Ball Valve I
Chapter 9 ____________________________________________________________ Technical Data Accuracy of Calculated Variables Accuracy of the calculated variables depend on the calibration accuracy of the humidity and temperature sensors; here the accuracy are given for ±2 %RH and ±0.2 °C. Accuracy of Dewpoint Temperature °C Relative humidity Temp. 10 20 30 40 50 60 70 80 90 100 -40 1.86 1.03 0.76 0.63 0.55 0.5 0.46 0.43 — — -20 2.18 1.19 0.88 0.72 0.62 0.56 0.51 0.48 — — 0 2.
User’s Guide ______________________________________________________________________ Accuracy of Wet Bulb Temperature °C Relative humidity Temp. 10 20 30 40 50 60 70 80 90 100 -40 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 — — -20 0.21 0.21 0.22 0.22 0.22 0.22 0.23 0.23 — — 0 0.27 0.28 0.28 0.29 0.29 0.29 0.3 0.3 0.31 0.31 20 0.45 0.45 0.45 0.44 0.44 0.44 0.43 0.43 0.42 0.42 40 0.84 0.77 0.72 0.67 0.64 0.61 0.58 0.56 0.54 0.52 60 1.45 1.2 1.03 0.
Appendix A ______________________________________________________________ Dimensions APPENDIX A DIMENSIONS This Appendix contains parts drawings of the transmitter housing, probes and some transmitter mounting accessories with metric and nonmetric dimensions specified.
User’s Guide ______________________________________________________________________ HMP363 0603-015 HMP364 0603-016 HMP365 0603-017 86 ___________________________________________________________________ M010056EN-J
Appendix A ______________________________________________________________ Dimensions HMP367 0603-018 HMP368 0603-019 VAISALA _______________________________________________________________________ 87
User’s Guide ______________________________________________________________________ Mounting Plate Rain Shield 0603-041 88 ___________________________________________________________________ M010056EN-J
Appendix A ______________________________________________________________ Dimensions Protection Cover 0505-304 VAISALA _______________________________________________________________________ 89
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Appendix B ______________________________________ Wiring for Intrinsically Safe Operation, FM APPENDIX B WIRING FOR INTRINSICALLY SAFE OPERATION, FM This appendix contains the wiring diagram for intrinsically safe operation approved by Factory Mutual (FM).
User’s Guide ______________________________________________________________________ REV QTY DESIGN DESCRIPTION / INFO / ECO No.
Appendix C _____________________________________ Wiring for Intrinsically Safe Operation, CSA APPENDIX C WIRING FOR INTRINSICALLY SAFE OPERATION, CSA This appendix contains the wiring diagram for intrinsically safe operation approved by the Canadian Standards Association (CSA).
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