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Vaisala HUMICAP HMP41 User Manual

Summary of HUMICAP HMP41

  • Page 1

    User's guide vaisala humicap® indicator hmi41 and probes hmp41/45/46 m210316en-a.

  • Page 2

    Published by vaisala oyj phone (int.): +358 9 8949 1 p.O. Box 26 fax: +358 9 8949 2227 fin-00421 helsinki finland visit our internet pages at http://www.Vaisala.Com/ © vaisala 2006 no part of this manual may be reproduced in any form or by any means, electronic or mechanical (including photocopying)...

  • Page 3: Contents

    Hmi41 and probes m210316en-a operating manual i contents 1. The hmi41 indicator and probes............................................................................... 1 2. To be noted in the measurement of humidity ..................................................... 3 3. Getting started ..........

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    Hmi41 and probes operating manual m210316en-a ii 10. In case of error .......................................................................................................... 39 10.1 trouble shooting .....................................................................................................

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    Hmi41 and probes m210316en-a operating manual 1 1. The hmi41 indicator and probes the hmi41 is an easy-to-use portable humidity and temperature indicator for a variety of applications, including such as industrial monitoring and inspections, occupational health and safety, laboratory and research us...

  • Page 6

    Hmi41 and probes operating manual m210316en-a 2 the hmi41 indicator displays relative humidity, temperature and dewpoint temperature readings. In addition to these, one of the following quantities can also be chosen: absolute humidity, wet bulb temperature or mixing ratio. The indicator also feature...

  • Page 7

    Hmi41 and probes m210316en-a operating manual 3 2. To be noted in the measurement of humidity in the measurement of humidity and especially in calibration it is essential that temperature equilibrium is reached. Even a small difference in temperature between the measured object and the sensor causes...

  • Page 8: Getting Started

    Hmi41 and probes operating manual m210316en-a 4 3. Getting started 3.1 inserting the batteries when taking the hmi41 indicator into use, first insert the batteries (4 pcs of size aa [ lr6 ] batteries). Open the lid on back of the device and insert the batteries as indicated in the housing. Then clos...

  • Page 9: Taking Measurements

    Hmi41 and probes m210316en-a operating manual 5 4. Taking measurements 4.2 starting the measurements before starting the measurements with the hmi41 and appropriate probe, remember to allow enough time for stabilization. Turn the power on with the on/off button and the following appears: rh set min ...

  • Page 10

    Hmi41 and probes operating manual m210316en-a 6 4.65 v, the indicator turns itself off to prevent erroneous measurements and readings. Should this happen, replace the batteries. 4.2 measurement readings on display relative humidity and temperature readings appear automatically after the battery char...

  • Page 11

    Hmi41 and probes m210316en-a operating manual 7 4.3 hold-mode in any of the previously mentioned measurement reading displays, the button hold freezes the display to show the current readings, e.G. Rh & t readings: rh hold t °c % with mode or enter, the display returns to the normal display mode. If...

  • Page 12: Calibration

    Hmi41 and probes operating manual m210316en-a 8 5. Calibration the hmi41 indicator and probes are fully calibrated at the factory, so there should be no immediate need for recalibration. Calibration is recommended once in a year and always when there is a reason to believe that the adjustments have ...

  • Page 13: Note

    Hmi41 and probes m210316en-a operating manual 9 the calibration procedure is as follows (see also the calibrator manual): • leave the calibrator and the probe at the calibration site for at least 30 minutes before starting the calibration in order to let the probe temperature stabilize to the room t...

  • Page 14: Note

    Hmi41 and probes operating manual m210316en-a 10 as the d (dry) and w (wet) adjustments may affect each other, check again the humidity reading in the licl salt chamber: insert the probe into the calibration hole and wait until the reading stabilizes. If necessary, repeat the adjustments in both the...

  • Page 15

    Hmi41 and probes m210316en-a operating manual 11 press enter eight times until the following text appears: set this indicates that no calibration has been selected. In addition to this, there are five calibration types available. The desired type is selected with buttons ▲ or ▼. All selections are a...

  • Page 16

    Hmi41 and probes operating manual m210316en-a 12 in setup mode, press enter repeatedly until the following is displayed: set then press mode twice, and the following appears: rh set press enter to activate the one point calibration mode. A message similar to the following appears with the first line...

  • Page 17

    Hmi41 and probes m210316en-a operating manual 13 calibration. If the calibration has been successful, the following message appears: the correction data has now been calculated and stored in the hmi41 memory. The hmi41 returns automatically to the selection of display units, and can be turned off. W...

  • Page 18

    Hmi41 and probes operating manual m210316en-a 14 press enter to activate the two point humidity calibration mode. A message similar to the following appears with the first line blinking: rh set % lo the blinking number indicates the value of the lower humidity reference stored in the hmi41 memory. C...

  • Page 19

    Hmi41 and probes m210316en-a operating manual 15 rh set % press enter and the hmi41 indicator shows the value that the probe is currently measuring, displaying a message similar to the following: rh % hi wait at least ten minutes for the reading to stabilize and press enter to acknowledge the value....

  • Page 20

    Hmi41 and probes operating manual m210316en-a 16 set then press mode four times, and the following appears: set t press enter to activate the one point temperature calibration mode. A message similar to the following appears with the first line blinking: set t °c the blinking number indicates the te...

  • Page 21

    Hmi41 and probes m210316en-a operating manual 17 the correction data has now been calculated and stored in the hmi41 memory. The hmi41 returns automatically to the selection of the display units, and can be turned off. When the indicator is used as a standard indicator and the correction data differ...

  • Page 22

    Hmi41 and probes operating manual m210316en-a 18 set lo t °c the blinking number indicates the value of the lower temperature reference stored in the hmi41 memory. Insert the probe to the lower reference temperature. Check the reference temperature and change the display with buttons ▲ and ▼ to corr...

  • Page 23

    Hmi41 and probes m210316en-a operating manual 19 hi t °c wait at least ten minutes for the reading to stabilize and press enter to acknowledge the value. Press enter again to conclude the calibration. If the calibration has been successful, the following message appears: the correction data has now ...

  • Page 24: Hmi41 and Data Collecting

    Hmi41 and probes operating manual m210316en-a 20 6. Hmi41 and data collecting the hmi41 indicator can also be used for collecting the measurement data. The data is stored in the indicator's non-volatile memory which means that it is not lost when the indicator is turned off. Please, note also that t...

  • Page 25

    Hmi41 and probes m210316en-a operating manual 21 6.2 manual data collecting for manual data collecting, press the button mode and the following appears: press enter and a text similar to the following appears: rh set t °c % the probe is now taking measurements and you can store the readings at appro...

  • Page 26

    Hmi41 and probes operating manual m210316en-a 22 6.3 setting the measurement duration turn the indicator on with the on/off button, press immediately the button hold and keep it pressed until the text rec auto appears on the display. Press enter and a text similar to the following appears on the dis...

  • Page 27

    Hmi41 and probes m210316en-a operating manual 23 select the interval with buttons ▲ and ▼. The measurement interval can be selected in steps according to the following: • 1 - 5 min: each pressing = 1 minute • 10 min; 15 min; 30 min • 1 - 6 h: each pressing = 1 hour • 12 h the text ' lo ' on the disp...

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    Hmi41 and probes operating manual m210316en-a 24 estimate the time of the measurement stored during automatic data collecting provided that the starting time and the measurement interval are known. Numbers on the right on the second line indicate the temperature reading measured simultaneously with ...

  • Page 29

    Hmi41 and probes m210316en-a operating manual 25 6.5.1 min and max in data collecting rec read mode when the data collecting rec read mode has been activated, the hold button brings four different modes on the display: min hi , max hi , min lo and max lo . These modes indicate the maximum and minimu...

  • Page 30

    Hmi41 and probes operating manual m210316en-a 26 7. Transferring the stored readings to a pc the readings that have been stored in the hmi41 memory manually or automatically in the data collecting mode, can be transferred to a computer and then printed if desired. In order to do this, connect a seri...

  • Page 31

    Hmi41 and probes m210316en-a operating manual 27 figure 7.1.1 giving the communication parameters in windows 3.1 note: select the connector according to your computer. Select the connector first and give then other para- meters.

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    Hmi41 and probes operating manual m210316en-a 28 table 7.1.2 giving parameters in windows 95 and windows nt windows 95 windows nt menu what to do menu what to do start start ò move the cursor to: ò move the cursor to: programs programs ò move the cursor to: ò move the cursor to: accessories accessor...

  • Page 33

    Hmi41 and probes m210316en-a operating manual 29 figure 7.1.2 selecting the parameters in windows 95 and nt 7.2 transferring the data when you have given the communication parameters, you can start transferring the data from the hmi41. Note that communication parameters can be stored in the computer...

  • Page 34

    Hmi41 and probes operating manual m210316en-a 30 7.2.1 play transferring the data to transfer the data on your pc, type play and press enter. An example of outputting automatically stored data: >play reading log... Ok data hh:mm:ss rh t td 0 00:00:00 12.54 21.53 -8.48 1 00:01:00 12.10 21.23 -9.16 2 ...

  • Page 35

    Hmi41 and probes m210316en-a operating manual 31 > to change the output, type cplay , then the character you wish to appear between decimals, then the character you wish to use between fields and then . An example: >cplay , desimal separator : , field separator : tab example: 1 01:00:00 38,72 21,61 ...

  • Page 36

    Hmi41 and probes operating manual m210316en-a 32 to exit the terminal session, go to file menu and select exit . Confirm that you wish to quit and then select whether you wish to store the parameters of this session for future use or not ( save - yes / no )..

  • Page 37: Changing The Settings

    Hmi41 and probes m210316en-a operating manual 33 8. Changing the settings the hmi41 settings can be changed in the setup mode. It is necessary to give the probe type setting manually if the factory settings of the indicator have been changed or if the indicator or the probe do not have letters id in...

  • Page 38

    Hmi41 and probes operating manual m210316en-a 34 set °c you can scroll the setup menu by pressing enter. 8.2 selecting the display units set °c you can now select the display units with buttons ▲ or ▼. Choose 0 for metric units or 1 for non-metric units (see table 8.2). The temperature unit on the d...

  • Page 39

    Hmi41 and probes m210316en-a operating manual 35 8.4 selecting the display quantities set the hmi41 displays relative humidity, temperature and dewpoint temperature readings. In addition to these, one of the following quantities can be chosen: absolute humidity, wet bulb temperature and mixing ratio...

  • Page 40: Note

    Hmi41 and probes operating manual m210316en-a 36 8.6 selecting the probe type set if necessary, change the setting with buttons ▲ and ▼. You have now completed the setup procedure; turn your indicator off. Note the hmi41 setup contains further settings (start, baud, seri and calib) that appear after...

  • Page 41: Maintenance

    Hmi41 and probes m210316en-a operating manual 37 9. Maintenance 9.1 changing the humicap 180 humidity sensor unscrew the plastic grid (hmp41&45) or the sintered filter (hmp46). Remove the damaged sensor and mount a new humicap ® 180 humidity sensor in its place. Handle the sensor with care. Calibrat...

  • Page 42

    Hmi41 and probes operating manual m210316en-a 38 9.4 spare parts and accessories order code description hmp41 rh & t probe; for fixed mounting hmp42 rh & t probe; for tight spaces hmp45 rh & t probe; cable model hmp46 rh & t probe; cable model, for dirty or hot processes humicap 180 humidity sensor ...

  • Page 43: 10.

    Hmi41 and probes m210316en-a operating manual 39 10. In case of error the hmi41 goes through a continuous self-diagnostic procedure. If any problems occur, it displays the corresponding error message: where nn = the number indicating the error whenever you come across an error message or your indica...

  • Page 44

    Hmi41 and probes operating manual m210316en-a 40 10.2 checking the settings turn the hmi41 on and enter the setup mode (see chapter 8). Make sure that the following settings are correct: setting correct value probe aut (all probes)or 1 (with hmp41/45) or 2 (with hmp46) start (*) 1 baud 4.8 seri e.7....

  • Page 45: 11.

    Hmi41 and probes m210316en-a operating manual 41 11. Technical data 11.1 hmi41 indicator maximum measurement error caused by the indicator at 20 ° c (for system accuracy, see probes’ technical specifications) humidity +0.1 %rh temperature +0.1 ° c calculated variables dewpoint temperature, absolute ...

  • Page 46

    Hmi41 and probes operating manual m210316en-a 42 11.2 hmp41and hmp45 probes 11.2.1 relative humidity measurement range 0...100 %rh non-condensing accuracy (at +20 °c) when calibrated against salt solutions (astm e104-85): ± 2 %rh (0...90 %rh) ± 3 %rh (90...100 %rh) temperature dependence of electron...

  • Page 47

    Hmi41 and probes m210316en-a operating manual 43 11.3 hmp46 probe 11.3.1 relative humidity measurement range 0...100 %rh non-condensing accuracy (at +20 °c); maximum achievable accuracy when calibrated against high quality, certified humidity standards ± 1 %rh (0...90 %rh) ± 2 %rh (90...100 %rh) whe...

  • Page 48

    Hmi41 and probes operating manual m210316en-a 44 11.3.3 general operating temperature range -20...+60 ° c sensor head -40...+100 ° c (temporarily + 180 ° c) storage temperature range -40...+80 ° c material: handle abs plastic pipe stainless steel cable pvc spiral cable housing classification (electr...

  • Page 49

    Hmi41 and probes m210316en-a operating manual 45 accuracy of mixing ratio (g/kg) with ambient pressure of 1013.25 mbar rh/% 10 20 30 40 50 60 70 80 90 100 t/ ° c -40 0.002 0.002 0.002 0.002 0.003 0.003 0.003 0.003 - - -20 0.014 0.015 0.017 0.018 0.019 0.020 0.022 0.023 - - 0 0.08 0.09 0.09 0.10 0.10...

  • Page 50

    Hmi41 and probes operating manual m210316en-a 46 11.4.2 accuracies in non-metric units accuracy of dewpoint temperature (°f) rh/% 10 20 30 40 50 60 70 80 90 100 t/ ° f -40 3.28 1.80 1.33 1.10 0.96 0.86 0.80 0.75 - - -4 3.76 2.05 1.50 1.22 1.06 0.95 0.88 0.82 - - 32 4.52 2.47 1.80 1.46 1.26 1.13 1.03...

  • Page 51

    Hmi41 and probes m210316en-a operating manual 47 accuracy of wet bulb temperature (°f) rh/% 10 20 30 40 50 60 70 80 90 100 t/ ° f -40 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.37 - - -4 0.37 0.38 0.38 0.38 0.39 0.39 0.40 0.40 - - 32 0.49 0.50 0.51 0.51 0.52 0.53 0.54 0.55 0.55 0.56 68 0.82 0.81 0.81 0.80...

  • Page 52

    Hmi41 and probes operating manual m210316en-a 48 appendix 1: quick reference to commands 1. Display texts and operating commands ................................................................ 49 2. Calibration with the hmi41 software ...................................................................

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    Hmi41 and probes m210316en-a operating manual 49 1. Display texts and operating commands the hmi41 is used by simply turning it on with the on/off button. In the following, you will find a summary of the display texts with explanations and the operating commands. On/off: the hmi41 is turned on or of...

  • Page 54

    Hmi41 and probes operating manual m210316en-a 50 mode: outputting of the selected quantities rh t °c % relative humidity and temperature readings are output (automatically after power-up). Press mode (the following appears): t td °c °c dewpoint temperature and temperature readings are output. Press ...

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    Hmi41 and probes m210316en-a operating manual 51 2. Calibration with the hmi41 software this quick reference is meant for those users who already know how to use the hmi41 indicator. The operating manual gives more detailed instructions. Note: it is recommended that the calibration is done with trim...

  • Page 56

    Hmi41 and probes operating manual m210316en-a 52 2.2 two-point humidity calibration rh set min max hyst hold lo bat hi p pa h g/m t td °c °f °c °f % turn the hmi41 indicator on. Within 1-2 seconds press simultaneously buttons mode and hold until the text setup appears. Wait a few seconds. Set °c pre...

  • Page 57

    Hmi41 and probes m210316en-a operating manual 53 2.3 one-point temperature calibration rh set min max hyst hold lo bat hi p pa h g/m t td °c °f °c °f % turn the hmi41 indicator on. Within 1-2 seconds press simultaneously buttons mode and hold until the text setup appears. Wait a few seconds. Set °c ...

  • Page 58

    Hmi41 and probes operating manual m210316en-a 54 2.4 two-point temperature calibration rh set min max hyst hold lo bat hi p pa h g/m t td °c °f °c °f % turn the hmi41 indicator on. Within 1-2 seconds press simultaneously buttons mode and hold until the text setup appears. Wait a few seconds. Set °c ...

  • Page 59: Data Collecting Mode

    Hmi41 and probes m210316en-a operating manual 55 3. Data collecting mode 3.1 manual data collecting rh set min max hyst hold lo bat hi pabs pa g/m t td °c°f °c°f % turn the indicator on. Within 1 - 2 seconds press the button hold until the text rec auto appears, then release the button. Press the bu...

  • Page 60

    Hmi41 and probes operating manual m210316en-a 56 3.2 setting the measurement duration for automatic data collecting rh set min max hyst hold lo bat hi pabs pa g/m t td °c°f °c°f % turn the indicator on. Within 1 - 2 seconds press the button hold until the text rec auto appears, then release the butt...

  • Page 61

    Hmi41 and probes m210316en-a operating manual 57 3.4 reading the measurement results rh set min max hyst hold lo bat hi pabs pa g/m t td °c°f °c°f % turn the indicator on. Within 1 - 2 seconds press the button hold until the text rec auto appears, then release the button. Press twice the button mode...

  • Page 62

    Hmi41 and probes operating manual m210316en-a 58 3.4.1 min and max in the data collecting mode rh min hi °c % in this example, the minimum value of the first line reading is being observed ( min = minimum, hi = the first line reading); press enter to see the t reading with decimals. Rh max hi t °c %...

  • Page 63

    Hmi41 and probes m210316en-a operating manual 59 4. Transferring the measured data to a pc give the communication parameters when using this terminal session for the first time; save them for future use. See instructions in the following tables. Table 4.1 giving parameters in windows 3.1 menu descri...

  • Page 64

    Hmi41 and probes operating manual m210316en-a 60 table 4.2 giving parameters in windows 95 and windows nt windows 95 windows nt menu what to do menu what to do start start ò move the cursor to: ò move the cursor to: programs programs ò move the cursor to: ò move the cursor to: accessories accessorie...

  • Page 65

    Hmi41 and probes m210316en-a operating manual 61 4.2 using the serial commands 4.2.1 play transferring the data to output the stored readings on your computer, turn the hmi41 on, type play and press enter. An example of outputting automatically stored readings: >play reading log... Ok data hh:mm:ss ...

  • Page 66

    Hmi41 and probes operating manual m210316en-a 62 to change the output, type cplay , the character you wish to appear between decimals, the character you wish to use between fields and then . An example: >cplay , desimal separator : , field separator : tab example: 1 01:00:00 38,72 21,61 7,01 > 4.2.3...

  • Page 67: Changing The Settings

    Hmi41 and probes m210316en-a operating manual 63 5. Changing the settings the hmi41 factory settings are the following: - display units: 0 (metric) - automatic power-off: 5 (minutes) - display quantities: 0 (rh, t and td) - pressure: 1013.25 hpa (1 hpa = 1 mbar) - probe type: aut (or 1, see below) -...

  • Page 68: Note

    Hmi41 and probes operating manual m210316en-a 64 note the hmi41 setup contains further settings (start, baud, seri and calib) that appear after probe type setting when pressing enter. Start setting is changed only when using the hmp44/l probes ( start 5, see the hm44 operating manual). For calib, se...

  • Page 69

    Warranty vaisala hereby represents and warrants all products manufactured by vaisala and sold hereunder to be free from defects in workmanship or material during a period of twelve (12) months from the date of delivery save for products for which a special warranty is given. If any product proves ho...

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