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Vaisala HUMICAP HMT360 SERIES, User Manual

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Chapter 5 __________________________________________________  Measuring at Overpressure

VAISALA _______________________________________________________________________ 59

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:

The accuracy of the dewpoint measurement is affected by pressure in 
the measurement chamber. The actual pressure in the sampling cell is 
required to be set to the transmitter by using the serial line command 

PRES

 (see section 

PRES Setting Ambient Pressure for Calculations on 

page 56

 or by using the keypad commands, see section 

Setting the 

Pressure for Calculations on page 46

).

HMP364:

0 ... 100 bar (10 MPa), for pressurized rooms and 
processes, probe is provided with a nut, fitting screw 
and sealing washer

HMP368:

0 ... 40 bar (4 MPa), for pressurized pipelines, ball 
valve set available

Summary of Contents for HUMICAP HMT360 SERIES

Page 1: ...USER S GUIDE Vaisala HUMICAP Humidity and Temperature Transmitter Series HMT360 M010056EN G ...

Page 2: ...ut prior written permission of the copyright holder The contents are subject to change without prior notice Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user All legally binding commitments and agreements are included exclusively in the applicable supply contract or Conditions of Sale Vaisala Oyj Phone int 358 9 8949 1 P O ...

Page 3: ... Introduction to Vaisala HUMICAP Humidity and Temperature Transmitter Series HMT360 15 Output Quantities 16 Probe Options 17 CHAPTER 3 INSTALLATION 19 General Installation Instructions 19 Mounting the Probe Cable in Gas Group IIC Spaces 19 Selecting Location 20 General Instructions for Probes with Cable 20 Checking the Temperature Reading 22 Mounting the Transmitter Housing 22 Probe Mounting 25 HM...

Page 4: ...DIP Switch Functions 45 Display Keypad Commands 46 Setting the Pressure for Calculations 46 Selecting Output Quantities 47 Upper Half of Display 47 Lower Half of Display 48 Selecting Analog Outputs 48 Scaling Analog Outputs 49 Serial Interface 50 Serial Communication Settings 51 Setting the Analog Outputs 51 ASEL Selecting Analog Outputs 51 S Scaling Analog Outputs 52 Adjustment Commands 53 CRH Re...

Page 5: ... 67 High End Adjustment Two Point Adjustment 68 One Point Temperature Adjustment 68 ACAL Analog Output Calibration 69 CHAPTER 7 MAINTENANCE 71 Periodical Checking and Cleaning 71 Transmitter Housing and Probe 71 CHAPTER 8 TROUBLESHOOTING 73 Diagnostics 73 Operation Errors 73 Analog Output Test 74 Technical Support 74 Return Instructions 74 Vaisala Service Centers 75 CHAPTER 9 TECHNICAL DATA 77 Per...

Page 6: ...e C 85 Accuracy of Mixing Ratio g kg 86 Accuracy of Wet Bulb Temperature C 86 Accuracy of Absolute Humidity g m3 87 APPENDIX A DIMENSIONS 89 HMP361 89 HMP363 90 HMP364 90 HMP365 90 HMP367 91 HMP368 91 Mounting Plate 92 Rain Shield 92 Protection Cover 93 APPENDIX B WIRING FOR INTRINSICALLY SAFE OPERATION FM 95 APPENDIX C WIRING FOR INTRINSICALLY SAFE OPERATION CSA 97 APPENDIX D CERTIFICATES 99 ...

Page 7: ...g Nut and Fitting Screw 28 Figure 11 Cleaning the Tightening Cone 28 Figure 12 Mounting HMP365 Probe in Duct or Channel 29 Figure 13 HMP368 Probe 30 Figure 14 Sealing of Fitting Body into Process 31 Figure 15 Tightening the Clasp Nut 32 Figure 16 Installing the HMP368 Probe Through a Ball Valve Assembly 33 Figure 17 HMT360 Connected to Galvanic Isolator 39 Figure 18 HMT360 Connected to a Zener Bar...

Page 8: ...________________________________________________________________________________ 6 _______________________________________________________________________________ ...

Page 9: ...s HMT360 16 Table 4 HMP368 Probe Dimensions 31 Table 5 Serial Communications Settings 51 Table 6 Pressure Conversion Chart 56 Table 7 Relative Humidity Specifications 77 Table 8 Temperature Specifications 78 Table 9 Water Activity in Jet Fuel Applications Specifications 79 Table 10 HMP361 Calculated Variables Specifications 80 Table 11 HMP363 HMP364 HMP365 HMP367 HMP368 Probes Calculated Variables...

Page 10: ...________________________________________________________________________________ 8 _______________________________________________________________________________ ...

Page 11: ...Manual This manual consists of the following chapters Chapter 1 General Information This chapter provides general notes for the manual and the product Chapter 2 Product Overview This chapter introduces the features advantages and the product nomenclature Chapter 3 Installation This chapter provides you with information that is intended to help you install this product Chapter 4 Operation This chap...

Page 12: ... 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 Appendix B Wiring for Intrinsically Safe Operation FM This appendix contains the wiring diagram for intrinsically safe operation approved b...

Page 13: ... May 2004 M010056EN E July 2005 M010056EN F August 2006 New measurement probes and new transmitter housing introduced M010056EN G September 2007 HUMICAP 180R added as a new sensor type New copies of certificates added in Appendix Certificates on page 99 Table 2 Related Manuals Manual Code Manual Name M210185EN B Humidity Calibrator HMK15 User s Guide WARNING Warning alerts you to a serious hazard ...

Page 14: ...cuits 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 To make sure you are not delivering high static voltages yourself Handle ESD sensitive components on a properly grounded and protected ESD workbench When th...

Page 15: ...tificates and wiring diagrams are provided in the following appendices Appendix B Wiring for Intrinsically Safe Operation FM on page 95 Appendix C Wiring for Intrinsically Safe Operation CSA on page 97 Appendix D Certificates on page 99 Trademarks HUMICAP is a registered trademark of Vaisala License Agreement All rights to any software are held by Vaisala or third parties The customer is allowed t...

Page 16: ...part shall should Vaisala so require be sent to the works of Vaisala or to such other place as Vaisala may indicate in writing freight and insurance prepaid and properly packed and labelled unless Vaisala agrees to inspect and repair the Product or replace it on site This warranty does not however apply when the defect has been caused through a normal wear and tear or accident b misuse or other un...

Page 17: ...advantages and the product nomenclature Introduction to Vaisala HUMICAP Humidity and Temperature Transmitter Series 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 WARNING In hazardous environments the transmitters must always be connected via gal...

Page 18: ...r Series HMT360 is available either with or without a local display and with one or two current output channels Available output quantities are listed in the table below Table 3 Output Quantities for Vaisala HUMICAP Humidity and Temperature Transmitter Series HMT360 Character Quantity Abbreviation Availability 0 relative humidity RH A D 1 temperature T A D F H 2 dewpoint temperature Td D 3 absolut...

Page 19: ...igure below 8 relative humidity of saturation RS H 9 saturation temperature Ts H The characters used to indicate availability in the table above A Available for HMT360 standard version D Available for HMT360 with optional calculations F Available for HMT360 Moisture and Temperature in oil transmitter H Available for HMT360 Moisture and Temperature in Jet Fuel transmitter Table 3 Output Quantities ...

Page 20: ...ture Transmitter Series HMT360 The following numbers refer to Figure 2 on page 18 1 HMP361 probe for wall mounting 2 HMP363 probe for tight spaces 3 HMP364 probe for pressurized spaces up to 100 bars 4 HMP365 probe for high temperatures up to 180 C Flange for HMP365 available as an option 5 HMP367 probe for high humidities 6 HMP368 probe for installations in pressurized pipelines up to 40 bars fea...

Page 21: ...llowing applies only to installation within the EU The following instructions shall be followed to fulfil the specifications of the EN50284 for nonconductive layer of the probe cable Never mount or handle the probe cable when hazardous gases are present For achieving a conductive shield cover the probe cable with conductive material like metal or conductive tape or mount the probe cable in a metal...

Page 22: ...s conditions General Instructions for Probes with Cable Mount the probes with a cable horizontally this way any water condensing on the tube cannot flow onto the sensor 0507 024 Figure 3 Horizontal Mounting of Probe WARNING During the installation work of the probes in gas group IIC areas requiring category I devices it has to be guaranteed that even in fault cases sparks generated by impacts or f...

Page 23: ...igher than that of the environment the whole probe and preferably plenty of cable must be inside the process This prevents measuring inaccuracy caused by heat conduction along the cable When mounted on the side of a duct or channel the probe must be inserted from the side of the duct If this is not possible and the probe must be inserted from the top the point of entry must be carefully insulated ...

Page 24: ...midity measurement and especially in calibration and adjustment it is essential that temperature of the probe and measuring environment is the same Even a small difference in temperature between the environment and the probe causes an error As the curve below shows if the temperature is 20 C and the relative humidity 100 RH a difference of 1 C between the environment and the probe causes an error ...

Page 25: ..._______________________ Installation VAISALA_______________________________________________________________________ 23 The probe can be detached and replaced when needed by simply unfastening the two Allen screws 0603 037 Figure 6 Transmitter Mounting ...

Page 26: ...______________ M010056EN G 0603 038 Figure 7 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 ...

Page 27: ...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 Section HMP363 365 367 Duct Installation Kit on page 26 shows mounting of HMP363 367 with the optional duct installation kit CAUTION Do not unsolder and then resolder the probe ...

Page 28: ...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 The following numbers refer to Figure 8 on page 26 1 Duct wall 2 Flange 3 Sealing ring 4 Supporting bar 5 Probe attaching part to be fixed with supporting bar 6 RH...

Page 29: ...y to the fitting screw 4 Mark both the fitting screw and the nut hex 5 Tighten the nut a further 30º 1 12 turn or if you have a torque spanner tighten it with a torque of 80 10 Nm 60 7 ft lbs 6 Clean and grease the tightening cone of the fitting screw after every tenth detachment Change the sealing washer every time the fitting screw is detached Use high vacuum grease for example Dow Corning or a ...

Page 30: ... 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 NOTE When HMP364 is installed in a process with a pressure differing from normal atmospheric pressure please enter the pressure value of the process in bara into the transmitter...

Page 31: ...allation kit for HMP365 To avoid incorrect humidity readings there must not be significant temperature differences between the inside and outside of the duct 0505 271 Figure 12 Mounting HMP365 Probe in Duct or Channel HMP367 for High Humidities The HMP367 is for environment where relative humidity is very high near saturation Section HMP363 365 367 Duct Installation Kit on page 26 shows mounting o...

Page 32: ... Valve Assembly on page 32 0603 013 Figure 13 HMP368 Probe 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 When HMP368 is installed in a process with a pressure differing from normal atmospheric pressure please enter the pressure value of the process in bara into the transmitt...

Page 33: ... Nut 1 Adjust the probe to a suitable depth according to the type of installation 2 Tighten the clasp nut first manually 3 Mark the fitting screw and the clasp nut 4 Tighten the nut a further 50 60 ca 1 6 turn with a fork spanner If you have a suitable torque spanner tighten the nut to 45 5 Nm 33 4 ft lbs Table 4 HMP368 Probe Dimensions Probe Type Probe Length Adjustment Range Standard 178 mm 120 ...

Page 34: ...necting the probe to a pressurized process or pipeline Use the ball valve set or a 1 2 ball valve assembly with a ball hole of ø14 mm or more If you install the probe ø12 mm in a process pipe please note that the nominal size of the pipe must be at least 1 inch 2 54 cm Use the manual press handle to press the probe into the pressurized 10 bar process or pipeline The following numbers refer to Figu...

Page 35: ...e 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 provided that the process pressure is less than 10 bar This way the process does not have to be shut down when installing or removing the probe However if the process is shut down before removing the probe the process pressure can be max 20 ...

Page 36: ...Insert the probe to the fitting body and manually tighten the clasp nut to the fitting body 7 Open the ball valve 8 Push the probe through the ball valve assembly into the process If the pressure is high use the pressing handle that is provided with the probe If you push the probe hard without using the handle you may damage the cable Note that the probe must be pushed so deep that the filter is c...

Page 37: ...ON OFF switch see Figure 24 on page 62 5 Close the cover The transmitter is ready for use When using the transmitter in hazardous locations the use of galvanic isolators or barriers is essential The following barrier isolator are available in Vaisala barrier No 210664 STAHL 9001 51 280 091 141 and galvanic isolator No 212483 STAHL 9160 13 11 11 Examples of connections and more information on insta...

Page 38: ... Safe Operation CSA on page 97 European Requirements CATEGORY 1 Zone 0 HMT360 has to be connected to Exia certified associated apparatus with galvanic isolation gas group IIB or IIC CATEGORY 2 or 3 Zone 1 or 2 HMT360 has to be connected either to a Zener barrier or galvanic isolator Figure 17 on page 39 and Figure 18 on page 40 present examples of galvanic isolators and Zener barrier connections o...

Page 39: ... 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 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 value...

Page 40: ..._______________________________________ M010056EN G From these facts the following equation can be formed Udrop Rcabletot Iout 2 2 0 085 Ω m lmax 20 mA lmax 2 V 20 mA 2 0 085 Ω m lmax 588 m 1930 ft maximum cable length NOTE If longer cable length is required use of the galvanic isolators is recommended if possible ...

Page 41: ...SALA_______________________________________________________________________ 39 HMT360 Connected to a Galvanic Isolator 0505 278 0505 279 Figure 17 HMT360 Connected to Galvanic Isolator HAZARDOUS AREA SAFE AREA a current signal controller I HAZARDOUS AREA SAFE AREA b voltage signal controller ...

Page 42: ..._________________________ 40 __________________________________________________________________ M010056EN G HMT360 Connected to a Zener Barrier 0505 280 0505 281 Figure 18 HMT360 Connected to a Zener Barrier a current signal controller HAZARDOUS AREA SAFE AREA ...

Page 43: ...____________________ Installation VAISALA_______________________________________________________________________ 41 Examples of Connections 0505 282 Figure 19 STAHL 9160 13 11 11 Galvanic Isolator 0505 283 Figure 20 STAHL 9001 51 280 091 141 Zener Barrier ...

Page 44: ...unding 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 Use ground terminal located inside or outside of transmitter Figure 21 on page 42 0505 284 Figure 21 Grounding HAZARDOUS AREA SAFE AREA ...

Page 45: ...transmitter has four pushbuttons located on the housing cover The transmitter can be ordered either with or without a local display The display keypad commands see Display Keypad Commands on page 46 can be used to scale the outputs and select special output quantities if the transmitter configuration includes special output quantities The optional display shows the measurement results The keypad p...

Page 46: ...ppear on the display after switching power ON The analog output signals can be read from the system or load resistor HMT360 without Display If the transmitter does not have a display the red LED indicator on the cover indicates various phases of calibration and possible errors In normal operation it is not lit If the LED is lit and all calibration or test DIP switches are disabled it is an indicat...

Page 47: ...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 If this switch is in the disabled position down it does not allow any calibrations or scalings...

Page 48: ... 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 Display Keypad Commands Setting the Pressure for Calculations In humidity transmitters ambient pressure is used for the mixing ratio and wet bulb calculations To modify the pressure settings turn the internal Calibration Enabled...

Page 49: ...urn 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 Character Quantity Abbreviation Availability Metric Unit Nonmetric Unit 0 relative humidity RH A D RH RH 1 temperature T A D F ...

Page 50: ...P switches to position special all up Press button C on the display cover text SCAL appears on the display Then press button E until the following display appears 0505 288 The characters on the second line of the display in this menu correspond to the quantities according to the table in section Selecting Output Quantities on page 47 Select the quantity for Ch 1 with buttons Up and Dn and acknowle...

Page 51: ... text similar to the following appears 0505 290 Numbers on the second line indicate the low end scaling of Ch 1 currently stored in the transmitter memory The text Set Lo on the lower left corner indicates that you can now change the low end scaling with buttons Up and Dn Acknowledge the value with button E and a text similar to the following appears 0505 291 Numbers on the second line indicate th...

Page 52: ...2C on the electronics unit of the transmitter see Figure 7 on page 24 NOTE Remember to restore the DIP switch settings WARNING The serial interface MUST NOT be used in hazardous areas NOTE With serial communication the current consumption increases approximately to 7 mA and the transmitter is not able to operate with 4 mA Therefore it is recommended to use serial communication only temporarily for...

Page 53: ...uter keyboard Setting the Analog Outputs ASEL Selecting Analog Outputs Syntax ASEL xxx yyy cr Turn the internal DIP switch Calibration Enabled Disabled to position ON before the selecting the analog outputs and return it to position OFF after making the selection Output quantities and their abbreviations are listed in the following table Table 5 Serial Communications Settings Parameter Value bauds...

Page 54: ...ing the analog outputs and return it to position OFF after scaling Character Quantity Abbreviation Availability Metric Unit Nonmetric Unit 0 relative humidity RH A D RH RH 1 temperature T A D F H C F 2 dewpoint temperature Td D C F 3 absolute humidity a D g m3 gr ft3 4 mixing ratio x D g kg gr lb 5 wet bulb temperature Tw D C F 6 mass concentration of water ppmw H ppmw ppmw 7 water activity aw H F...

Page 55: ...nt CRH Relative Humidity Adjustment Syntax CRH cr The transmitter asks and measures relative humidity and calculates the calibration coefficients Example crh cr RH 1 82 1 ref 0 cr Press any key when ready cr RH 74 222 2 ref 75 cr OK The OK indicates that the adjustment was succesful CT Temperature Adjustment Syntax CT cr The transmitter asks and measures temperature readings and calculates the cal...

Page 56: ... Syntax ITEST aa aaa bb bbb cr This command outputs the current value of each channel and the corresponding control signal of the digital to analog converter Example itest 8 12 cr 8 00000 403 12 00000 7DF itest cr 7 00150 30A 11 35429 73E The set current values remain valid until you issue the command ITEST without readings or reset the transmitter With this command the desired outputs of the tran...

Page 57: ...ous Output Syntax S cr The continuous outputting is stopped with the command S If outputting is active this command is not echoed INTV Setting Output Interval Syntax INTV n xxx cr Sets the output interval when the transmitter outputs measurement readings The time interval is used when the continuous output is active Example the output interval is set to 10 minutes intv 10 min cr Output interval 10...

Page 58: ...e setting Example pres 12 cr Pressure 12 0 bara Example 29 9213 inHg 29 9213 33 86388 1013 25 hPa mbar where aaaa a Pressure bara Table 6 Pressure Conversion Chart FROM hPa mbar mmHg Torr inHg atm bar psi hPa mbar 1 1 333224 33 86388 1013 25 1000 68 94757 TO mmHg Torr 0 7500617 1 25 40000 760 750 0617 51 71493 inHg 0 02952999 0 03937008 1 29 921 29 52999 2 036021 atm 0 00098692 0 00131597 0 033422...

Page 59: ...Output Filtering Syntax FILT a aaa cr This commands sets the measurement result filtering Example filt 1 cr Filter 1 0000 filt 0 5 cr Filter 0 5000 filt 0 1 cr Filter 0 1000 Resetting the Transmitter RESET Transmitter Reset Syntax RESET cr This command resets the device where a aaa 0 1 1 1 No filtering 0 5 Average of last two measurements 0 1 Average of ca 16 measurements ...

Page 60: ...User s Guide ______________________________________________________________________ 58 __________________________________________________________________ M010056EN G ...

Page 61: ...e The maximum measurement pressures depend on the probe as follows The accuracy of the dewpoint measurement is affected by pressure in the measurement chamber The actual pressure in the sampling cell is required to be set to the transmitter by using the serial line command PRES see section PRES Setting Ambient Pressure for Calculations on page 56 or by using the keypad commands see section Setting...

Page 62: ...______ M010056EN G Pressure Regulator Recommended When sampling pressurized processes exceeding the maximum measurement pressure of the probe the pressure in the measurement chamber must be regulated to the acceptable level or below It is recommended to use pressure regulator before the measurement chamber to prevent remarkable pressure variations ...

Page 63: ...paring 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 Typical calibration interval is one year In demanding applications it may be advisable to make the first calibration check earlier Factory Calibration and Adjustment The de...

Page 64: ...ly for the channel s to be calibrated 12 24 VDC a multimeter for HMT360 without a display and the calibrated references 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 0603 040 Figu...

Page 65: ...cable connections on place When putting the electronics unit back to place attach the upper hinge first Remember to attach the hinge support Connections 0505 293 Figure 25 Connecting Power Supply and Multimeter for Calibration 1 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 2 Conne...

Page 66: ... 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 0605 015 Example 1 Relative humidity scaling 0 100 RH reference 11 3 RH WARNING The power supply connectors C1 and C2 MUST NOT be used in hazardous areas For calibration and adjustment in a hazar...

Page 67: ...P switch Calibration Enabled Disabled to position ON and select RH calibration by using switches 3 and 4 see section DIP Switch Functions on page 45 Remove the filter and insert the probe into a measurement hole of the LiCl salt chamber in the humidity calibrator Acknowledge by pressing button E Alternatively select the 0 1 humidity in nitrogen with buttons Up and Dn Acknowledge with button E The ...

Page 68: ...__________________________________________________________________ 66 __________________________________________________________________ M010056EN G 0604 061 Figure 26 Display Chart of the Automatic Adjustment Procedure ...

Page 69: ...pears on the display and on the lower left corner you can see the text Set Lo If the transmitter has no display the LED indicator is blinking 5 According to the calibrator used wait at least 10 15 minutes for the sensor to stabilize use a multimeter or the transmitter display to monitor the stabilization 6 Press buttons Up and Dn to adjust the display reading or multimeter reading to correspond th...

Page 70: ...y or multimeter reading when using a multimeter calculate the current value corresponding to the reference humidity by using the equations presented in Calculating Correspondence of Current Values and Output Quantities on page 64 and conclude the adjustment with button E 5 Restore the DIP switch settings Set the calibration DIP switch to position disabled down One Point Temperature Adjustment 1 Se...

Page 71: ...urrent value corresponding to the reference humidity by using the equations presented in Calculating Correspondence of Current Values and Output Quantities on page 64 Conclude the one point adjustment by pressing button E twice ACAL Analog Output Calibration Syntax ACAL cr Connect HMT360 to a multimeter Issue the ACAL command 1 Disconnect the serial cable from the transmitter while reading the mul...

Page 72: ...User s Guide ______________________________________________________________________ 70 __________________________________________________________________ M010056EN G ...

Page 73: ... Cleaning Transmitter Housing and Probe The electronics unit of the transmitter as well as the probe can be removed and replaced in the field See section Removing the Electronics Unit on page 62 for detailed information All other maintenance must be performed by qualified Vaisala personnel If a transmitter is damaged contact your nearest Vaisala Service Center see contact information Vaisala Servi...

Page 74: ...User s Guide ______________________________________________________________________ 72 __________________________________________________________________ M010056EN G ...

Page 75: ...n Errors The following symptoms indicate an operation error of the HMT360 The analog output s current drops below 4 mA Display shows the word ERROR The LED on the cover is lit and no calibration is going on transmitters without display In the case of error Check that the sensor is connected properly Check if there is condensed water in the probe If yes let the probe dry In case of constant error c...

Page 76: ...www vaisala com Addresses of the Service Centers are provided in section Vaisala Service Centers on page 75 Please have the following information on hand serial number of the unit date and place of purchase or last calibration description of the fault circumstances in which the fault occurs occurred name and contact information of a technically competent person who can provide further information ...

Page 77: ...ICE CENTER Vaisala Inc 10 D Gill Street Woburn MA 01801 1068 USA Phone 1 781 933 4500 Fax 1 781 933 8029 E mail us customersupport vaisala com EUROPEAN SERVICE CENTER Vaisala Instruments Service Vanha Nurmijärventie 21 FIN 01670 Vantaa FINLAND Phone 358 9 8949 2658 Fax 358 9 8949 2295 E mail instruments service vaisala com TOKYO SERVICE CENTER Vaisala KK 42 Kagurazaka 6 Chome Shinjuku Ku Tokyo 162...

Page 78: ...User s Guide ______________________________________________________________________ 76 __________________________________________________________________ M010056EN G ...

Page 79: ... 0 100 RH Accuracy including non linearity hysteresis and repeatability with HUMICAP 180 and HUMICAP 180R at 15 25 C at 20 40 C at 40 180 C for typical applications for typical applications 1 RH 0 90 RH 1 7 RH 90 100 RH 1 0 0 008 reading RH 1 5 0 015 reading RH with HUMICAP 180L2 at 10 40 C at 40 180 C for applications with demanding chemical environment 1 0 0 01 reading RH 1 5 0 02 reading RH Fac...

Page 80: ...d filter Response time 90 for HUMICAP 180R at 20 C in 0 1 m s air flow 17 seconds with grid filter 50 seconds with grid steel netting 60 seconds with sintered filter Table 8 Temperature Specifications Property Description Value HMP361 40 60 C HMP363 80 C 40 80 C HMP363 120 C 40 120 C HMP364 70 180 C 0 10 MPa 0 100 bar HMP365 70 180 C HMP367 70 180 C HMP368 70 180 C 0 4 MPa 0 40 bar Accuracy at 20 ...

Page 81: ...ecifications Property Description Value Measurement range 0 1 aw at 40 180 C 40 356 F Accuracy when calibrated against high quality certified humidity standards salt solutions ASTM E104 85 0 01 0 0 9 0 02 0 9 1 0 0 02 0 0 9 0 03 0 9 1 0 Response time 90 at 20 C in still oil stainless steel filter 10 min Humidity sensor Vaisala HUMICAP Calculated variables available mass concentration of water rela...

Page 82: ...g m Wet bulb temperature 0 60 C Table 11 HMP363 HMP364 HMP365 HMP367 HMP368 Probes Calculated Variables Specifications Property Description Value Dewpoint temperature 40 100 C Mixing ratio 0 500 g kg d a Absolute humidity 0 600 g m Wet bulb temperature 0 100 C Table 12 Output Specifications Property Description Value Two analog outputs one standard one optional two wire 4 20 mA Typical accuracy of...

Page 83: ... A FM Classes I II III Division 1 Groups A G Division 2 Groups A D F and G FM Project ID 3010615 Safety factors Vmax 28 VDC Imax 100 mA Ci 1 nF Li 0 Pi 0 7 W Tamb 60 C T5 Canada CSA Class 1 Divisions 1 and 2 Groups A B C D Class II Divisions 1 and 2 Groups G and Coal Dust Class III CSA File No 213862 0 000 CSA report 1300863 Tamb 60 C T4 Japan TIIS Ex ia IIC T4 Code number TC17897 Safety factors U...

Page 84: ...20 1 5 7 5 12 mm M20 1 5 10 5 15 mm Conduit fitting M20 1 5 NPT 1 2 Operating temperature range for electronics with display Storage temperature range 40 60 C 20 60 C 40 70 C Housing material G AlSi 10 Mg DIN 1725 Housing classification IP 66 NEMA 4X Housing dimensions 164 115 62 mm Housing weight 950 g Fully electromagnetically compatible according to standards EN 61326 1 Electrical equipment for...

Page 85: ...r with Membrane 214848SP PPS Plastic Grid with Stainless Steel Netting DRW010281SP PPS Plastic Grid Filter DRW010276SP TRANSMITTER MOUNTING ACCESSORIES Wall Mounting Kit HM37108SP Rain shield 215109 Protection cover for use in the presence of combustible dust ATEX 214101 PROBE MOUNTING ACCESSORIES HMT363 HMP363 Duct Installation Kit 210697 Cable Gland M20 1 5 with Split Seal HMP247CG Swagelok for ...

Page 86: ... Structure NPTFITBODASP Fitting Body Set ISO 1 2 ISOFITBODASP Fitting Body Set ISO 1 2 NPT 1 2 THREADSETASP Leaking Screw with Allen Key 216027 Thread Adapter ISO1 2 to NPT1 2 210662SP Sampling Cell with Female Connectors DMT242SC Sampling Cell with Swagelok Connectors DMT242SC2 Ball Valve ISO1 2 with Welding Joint BALLVALVE 1 Installation Flange ISO1 2 DM240FA Manual Press HM36854SP CONNECTION CA...

Page 87: ...18 1 19 0 88 0 72 0 62 0 56 0 51 0 48 0 2 51 1 37 1 0 81 0 7 0 63 0 57 0 53 0 5 0 48 20 2 87 1 56 1 13 0 92 0 79 0 7 0 64 0 59 0 55 0 53 40 3 24 1 76 1 27 1 03 0 88 0 78 0 71 0 65 0 61 0 58 60 3 6 1 96 1 42 1 14 0 97 0 86 0 78 0 72 0 67 0 64 80 4 01 2 18 1 58 1 27 1 08 0 95 0 86 0 79 0 74 0 7 100 4 42 2 41 1 74 1 4 1 19 1 05 0 95 0 87 0 81 0 76 120 4 86 2 66 1 92 1 54 1 31 1 16 1 04 0 96 0 89 0 84...

Page 88: ... 3 16 3 43 3 72 4 04 4 38 4 75 5 15 5 58 80 6 73 7 73 8 92 10 34 12 05 14 14 16 71 19 92 24 01 29 29 100 16 26 21 34 28 89 40 75 60 86 98 85 183 66 438 56 120 40 83 74 66 172 36 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 ...

Page 89: ...0 0 023 0 025 0 027 0 029 0 031 0 032 0 034 0 036 0 0 1 0 11 0 12 0 13 0 13 0 14 0 15 0 15 0 16 0 17 20 0 37 0 39 0 41 0 43 0 45 0 47 0 49 0 51 0 53 0 55 40 1 08 1 13 1 18 1 24 1 29 1 34 1 39 1 44 1 49 1 54 60 2 73 2 84 2 95 3 07 3 18 3 29 3 4 3 52 3 63 3 74 80 6 08 6 3 6 51 6 73 6 95 7 17 7 39 7 61 7 83 8 05 100 12 2 12 6 13 13 4 13 8 14 2 14 6 15 15 3 15 7 120 22 6 23 3 23 9 24 6 25 2 25 8 26 5 ...

Page 90: ...User s Guide ______________________________________________________________________ 88 __________________________________________________________________ M010056EN G ...

Page 91: ...ns VAISALA_______________________________________________________________________ 89 APPENDIX A DIMENSIONS This Appendix contains parts drawings of the transmitter housing probes and some transmitter mounting accessories with metric and nonmetric dimensions specified HMP361 0603 042 ...

Page 92: ... Guide ______________________________________________________________________ 90 __________________________________________________________________ M010056EN G HMP363 0603 015 HMP364 0603 016 HMP365 0603 017 ...

Page 93: ...Appendix A ______________________________________________________________ Dimensions VAISALA_______________________________________________________________________ 91 HMP367 0603 018 HMP368 0603 019 ...

Page 94: ...User s Guide ______________________________________________________________________ 92 __________________________________________________________________ M010056EN G Mounting Plate Rain Shield 0603 041 ...

Page 95: ...Appendix A ______________________________________________________________ Dimensions VAISALA_______________________________________________________________________ 93 Protection Cover 0505 304 ...

Page 96: ...User s Guide ______________________________________________________________________ 94 __________________________________________________________________ M010056EN G ...

Page 97: ...nsically Safe Operation FM VAISALA_______________________________________________________________________ 95 APPENDIX B WIRING FOR INTRINSICALLY SAFE OPERATION FM This appendix contains the wiring diagram for intrinsically safe operation approved by Factory Mutual FM ...

Page 98: ...Ch2 HMT360 connection board Ch1 Material Weigh t DIMENSIONS ARE IN MILLIMETERS UNLESS OTHERWISE SPECIFIE D FIRST ANGLE PROJECTIO N Finish DOCUMEN T CRE ATION D ATA YYY Y MM DD INITIAL S Creator Approved Review Archive ID code Supplier Scale Size Title General tolerance Design Code Sheet of Rev REV QTY DESCRIPTION INFO ECO No DESIGN ACCEPTED Approved CHECKED Reviewed ...

Page 99: ...e Operation CSA VAISALA_______________________________________________________________________ 97 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 ...

Page 100: ...User s Guide ______________________________________________________________________ 98 __________________________________________________________________ M010056EN G 0505 306 ...

Page 101: ...___________________________ Certificates VAISALA_______________________________________________________________________ 99 APPENDIX D CERTIFICATES This Appendix contains copies of the EXi intrinsically safe certificates issued for the HMT360 series ...

Page 102: ...User s Guide ______________________________________________________________________ 100 _________________________________________________________________ M010056EN G 0705 009 ...

Page 103: ...Appendix D ______________________________________________________________ Certificates VAISALA______________________________________________________________________ 101 0705 010 ...

Page 104: ...User s Guide ______________________________________________________________________ 102 _________________________________________________________________ M010056EN G 0705 011 ...

Page 105: ...Appendix D ______________________________________________________________ Certificates VAISALA______________________________________________________________________ 103 0708 060 ...

Page 106: ...User s Guide ______________________________________________________________________ 104 _________________________________________________________________ M010056EN G ...

Page 107: ...Appendix D ______________________________________________________________ Certificates VAISALA______________________________________________________________________ 105 0705 161 ...

Page 108: ...User s Guide ______________________________________________________________________ 106 _________________________________________________________________ M010056EN G 0705 162 ...

Page 109: ...Appendix D ______________________________________________________________ Certificates VAISALA______________________________________________________________________ 107 0705 163 ...

Page 110: ...User s Guide ______________________________________________________________________ 108 _________________________________________________________________ M010056EN G 0705 014 ...

Page 111: ...Appendix D ______________________________________________________________ Certificates VAISALA______________________________________________________________________ 109 0705 164 ...

Page 112: ...User s Guide ______________________________________________________________________ 110 _________________________________________________________________ M010056EN G 0705 012 ...

Page 113: ...Appendix D ______________________________________________________________ Certificates VAISALA______________________________________________________________________ 111 0705 013 ...

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