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HMI41 AND HMP42
Operating Manual   

M210317EN-A

40

8.5

Setting the pressure for mixing ratio and wet bulb temperature 
calculations

set

P

Pa

h

The pressure is changed  (in steps of 0.25 hPa) with buttons 

▲

 (number up)

and 

▼

 (number down). Acknowledge the pressure setting with ENTER and a

text similar to the following appears:

set

   or   

set

Indicators marked with letters ID have the automatic probe recognition as
default (

AUT PROBE

) and previous versions the probe type 1. If the indicator

does not recognize the probe type automatically, 

set the type manually to

 

2

(see below) when using the HMP42.

8.6

Selecting the probe type

set

Change the setting with buttons 

▲

 (number up) and 

▼

 (number down). 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 probe type setting

 

when

pressing ENTER. 

Start 

setting is changed only when

using the HMP44/44L probes (

START 

5, see the HM44

Operating Manual). For 

calib

, see Chapter 5. Other

settings are meant for the HMI41 used as a field
calibrator for other Vaisala humidity transmitters. It is
recommended that these settings are not changed.

Содержание HUMICAP HMI41

Страница 1: ...OPERATING MANUAL HMI41 Indicator and HMP42 Probe M210317EN A...

Страница 2: ...roduced in any form or by any means electronic or mechanical including photocopying nor may its contents be communicated to a third party without a prior written notice of the copyright holder The ins...

Страница 3: ...w to use the HMP42 calibration adapter 11 5 2 Calibration with trimmer potentiometers 12 5 2 1 Humidity calibration 12 5 3 Calibration with HMI41 software commands 14 5 3 1 One point humidity calibrat...

Страница 4: ...d the sensor head set 41 9 2 Chemical tolerances of the HUMICAP MINI sensor 41 9 3 Spare parts and accessories 42 10 IN CASE OF ERROR 43 10 1 Trouble shooting 43 10 2 Checking the settings 44 11 TECHN...

Страница 5: ...marked with ID recognize automatically all versions of this probe All probe types are optimized for different applications HMP41 probe can be used for measuring humidity and temperature in numerous a...

Страница 6: ...an be either automatic or manual and it can be optimized for each application both the measurement interval and duration can be set by the user During automatic data collecting the probe takes measure...

Страница 7: ...the humidity is high Although the humidity sensor reacts rapidly to changes in the amount of water vapour in the air the probe temperature changes more slowly To avoid errors caused by temperature di...

Страница 8: ...icator see Figure 3 2 1 NOTE If the indicator does not have letters ID in the instrument label on the back of the indicator you must give the probe setting manually before starting the measurements se...

Страница 9: ...uple of seconds the battery charge appears and after that the first measurement readings RH T C More detailed instructions of use are given in Chapter 4 3 4 Using the HMP42 for measuring equilibrium h...

Страница 10: ...t if you clean several holes you should use a mask to protect yourself against dust You can also use a vacuum cleaner Seal the hole e g with tape Let stabilize e g 24 hours in concrete Cut the tape in...

Страница 11: ...ameter of 5 mm The filter must not be twisted When taking measurements in structures never leave the cable and indicator hanging down while leaving the probe to stabilize see photos below Make sure th...

Страница 12: ...you can see the text 42 46 on the display If not the indicator is of a previous version and does not recognize the probe type automatically Give the probe type setting manually see Chapter 8 After a c...

Страница 13: ...d again one of the following is displayed or the HMI41 returns to showing the RH and T readings according to what has been chosen for the measurement quantities see Chapter 4 4 abs g m T C Temperature...

Страница 14: ...FF 4 3 1 MIN mode If you wish to know the minimum readings that have been measured after power up press HOLD when the indicator is in the HOLD mode The minimum readings of the currently displayed quan...

Страница 15: ...careful when inserting the probe into the calibration adapter do not bend or break it The probe is inserted into the adapter with the steel grid on this protects the sensor and prevents it from breaki...

Страница 16: ...potentiometers are located under a protective plug The potentiometer marked T temperature is for factory use only DO NOT make any adjustments To make sure that this potentiometer is not accidentally...

Страница 17: ...e in the calibration table Adjust the dry end reading with the potentiometer D dry in the probe body to correspond to the value given in the calibration table use a suitable trimming screw wrench see...

Страница 18: ...il the reading is correct 5 3 Calibration with HMI41 software commands Calibration can also be done with the HMI41 software commands by entering the corrections in the indicator memory with pushbutton...

Страница 19: ...C F C F Then release the ON OFF button and press within 1 2 seconds both ENTER and MODE buttons until the following text appears on the display After a few seconds the text changes automatically to sh...

Страница 20: ...bration at one point See Chapter 5 3 3 for further details set T Two point temperature calibration select this for performing temperature calibration at two points See Chapter 5 3 4 for further detail...

Страница 21: ...d to correspond to the value given in the table For example if the temperature in the calibrator s NaCl salt chamber is 20 5 C adjust the value to 75 5 RH RH set Each time the button is pressed the va...

Страница 22: ...error may be due to an incorrect reference value or to measured values that are out of the range 5 3 2 Two point humidity calibration In two point humidity calibration two accurate references e g the...

Страница 23: ...or the reading to stabilize and press ENTER to acknowledge the value Press ENTER again to conclude the lower point calibration A message similar to the following appears with the first line blinking R...

Страница 24: ...rection data differs from the factory settings an arrow in the upper righthand corner is displayed RH T C If the message cal pass does not appear instead some other text may appear e g too close err o...

Страница 25: ...indicator shows the value that the probe is currently measuring displaying a message similar to the following T C Wait at least ten minutes for the reading to stabilize and press ENTER to acknowledge...

Страница 26: ...ruments to stabilize to the temperature equilibrium Start the calibration by inserting the probe to the lower reference temperature In setup mode press ENTER repeatedly until the following is displaye...

Страница 27: ...he blinking number indicates the value of the higher temperature reference stored in the HMI41 memory Insert the probe to the higher reference temperature Check the reference temperature and change th...

Страница 28: ...e indicator is used as a standard indicator and the correction data differs from the factory settings an arrow in the upper righthand corner is displayed RH T C If the message cal pass does not appear...

Страница 29: ...llowing appears for a couple of seconds RH set min max hyst hold Lo bat Hi P Pa h g m T Td C F C F Release the ON OFF button and press immediately the button HOLD The software version and the probe ty...

Страница 30: ...e the readings at appropriate intervals by pressing the button HOLD The sequence number of the reading in the indicator memory appears for a couple of seconds The indicator returns automatically to sh...

Страница 31: ...7 days The batteries last for 7 days during data collecting provided that they are of the same type as those delivered with the indicator Set the duration with buttons and The duration time can be se...

Страница 32: ...ner of the display The readings on the display are updated once a minute and the display is dim except during this updating in order to minimize the consumption If the indicator is turned off the meas...

Страница 33: ...st line if you wish to see the decimals press ENTER The reading appears on the display with one decimal RH T C In a couple of minutes the indicator returns to the previous display By pressing MODE you...

Страница 34: ...ng the minimum reading of the quantity on the first line By pressing HOLD repeatedly you can change from one display mode to another and by pressing MODE you can change the quantity on the first line...

Страница 35: ...7 1 Giving the communication parameters 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 7...

Страница 36: ...41 AND HMP42 Operating Manual M210317EN A 32 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 then ot...

Страница 37: ...me of the connection e g HMI41 in the appropriate field and select an icon if available click OK Connection Description type the name of the connection e g HMI41 in the appropriate field and select an...

Страница 38: ...cted to a serial port of your computer and that the terminal session is open Turn the HMI41 on and a text similar to the following appears HMI41 2 01 7 2 1 PLAY Transferring the data To transfer the d...

Страница 39: ...9 11 70 1 15 06 00 9 58 23 66 10 26 2 15 07 00 9 60 23 50 10 35 3 15 08 00 9 61 23 30 10 48 4 15 09 00 9 65 23 25 10 47 5 15 10 00 11 22 23 41 8 44 6 15 11 00 9 93 23 30 10 08 7 15 12 00 9 92 23 22 10...

Страница 40: ...e Send recordings from memory to serial port Usage PLAY hh mm cr hh mm rec starting time optional if command is used without parameters it uses default setting 7 3 4 Outputting the HMI41 settings If y...

Страница 41: ...default AUT PROBE and previous versions the probe type 1 If the indicator does not recognize the probe type automatically set the type manually to 2 when using the HMP42 Note also that the HMP42 prob...

Страница 42: ...ber up or number down Choose 0 for metric units or 1 for non metric units see Table 8 2 The temperature unit on the display changes accordingly If you do not wish to change any other settings press th...

Страница 43: ...ss ENTER the display changes to show the selection of the display quantities 8 4 Selecting the display quantities set The HMI41 displays relative humidity temperature and dewpoint temperature readings...

Страница 44: ...not recognize the probe type automatically set the type manually to 2 see below when using the HMP42 8 6 Selecting the probe type set Change the setting with buttons number up and number down You hav...

Страница 45: ...only However if for some reason it is necessary to do this yourself be careful not to break the sensor Unscrew the sensor head set and mount a new set in its place Handle the sensor head with care Cal...

Страница 46: ...5 mm HMP42P235SP Sensor head set RH and T sensors filters and installation accessories HMP41 RH T probe for fixed mounting HMP42 RH T probe for tight places HMP44 L RH T probe for measurements in str...

Страница 47: ...ers 3 1 and 9 1 if the batteries are ok contact Vaisala or a Vaisala representative the display is dim during automatic data collecting the display is dim except when the readings are updated once in...

Страница 48: ...eri E 7 1 calib def values 2 3 and 4 are for calibration cables when the calib setting is entered the value is always no factory settings for calibration correction data can be returned by selecting d...

Страница 49: ...les dewpoint temperature absolute humidity wet bulb temperature mixing ratio Resolution 0 1 RH 0 1 C Power supply 4 batteries type IEC LR6 Battery operation time 72 h continuous use Operating humidity...

Страница 50: ...85 2 RH 0 90 RH 3 RH 90 100 RH Temperature dependence of electronics 0 05 RH C Typical long term stability better than 1 RH per year Response time 90 at 20 C in still air with 30 s Humidity sensor HUM...

Страница 51: ...or type modular connector Operating temperature range for electronics 20 60 C Storage temperature range 40 100 C Housing material ABS plastic Housing classification electronics IP65 NEMA 4 Sensor prot...

Страница 52: ...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 60 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 70 100 4 42 2 41 1 74 1 40 1 19...

Страница 53: ...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 20 1 03 0 91 0 83 0 76 0 71 0 67 0 63 0 61 80 2 24 1 64 1 32 1 13 0 99 0 90 0 82...

Страница 54: ...0 0 21 0 21 0 22 0 23 0 24 104 0 47 0 49 0 52 0 54 0 56 0 58 0 61 0 63 0 65 0 67 140 1 19 1 24 1 29 1 34 1 39 1 43 1 48 1 53 1 58 1 63 176 2 65 2 74 2 84 2 94 3 03 3 13 3 22 3 32 3 41 3 51 212 5 33 5...

Страница 55: ...7EN A Operating Manual 51 11 5 Electromagnetic compatibility Complies with the following standard EN 61326 1 1997 Am 1 1998 Electrical equipment for measurement control and laboratory use EMC requirem...

Страница 56: ...59 3 1 Manual data collecting 59 3 2 Setting the measurement duration for automatic data collecting 60 3 3 Setting the measurement interval for automatic data collecting 60 3 4 Reading the measuremen...

Страница 57: ...een turned on The HMI41 software version and probe type indication If the software version does not appear it is less than 1 02 and the HMI41 can not be used with the HMP46 contact Vaisala or a Vaisal...

Страница 58: ...S MODE return to the RH T display T C Mixing ratio and temperature readings are output if mixing ratio has been selected during the setup proce dure PRESS MODE return to the RH T display HOLD freezes...

Страница 59: ...in 1 2 seconds press simultaneously buttons MODE and HOLD until the text SEtUP appears Wait a few seconds set C Press ENTER eight times set Press MODE twice RH set Press ENTER to activate one point hu...

Страница 60: ...Press ENTER RH Lo The indicator shows the value that the probe is currently measuring Wait at least10 minutes for the reading to stabilize and acknowledge it with ENTER Press ENTER again to conclude t...

Страница 61: ...Press ENTER to activate one point temperature calibration set T C The reference reading stored in the HMI41 memory is blinking Change it to the correct value with buttons or Press ENTER T C The indic...

Страница 62: ...Press ENTER Lo T C The indicator shows the value that the probe is currently measuring Wait at least 10 minutes for the reading to stabilize and acknowledge it with ENTER Press ENTER again to conclude...

Страница 63: ...ting Press ENTER to start the measurements RH set T C The probe is now taking measurements You can store the readings at appropriate intervals by pressing the button HOLD This brings the sequence numb...

Страница 64: ...be set from 15 minutes to 7 days Text BAT on the display indicates that the battery charge is not sufficient for the duration time selected select a shorter duration time Turn the indicator off or pre...

Страница 65: ...e left of the second line indicate the sequence number of the stored reading in the indicator memory Numbers on the right of the second line indicate the temperature measured simultaneously with the f...

Страница 66: ...the maximum value of the first line reading is being observed MAX maximum HI the first line reading press ENTER to see the T reading with decimals RH min Lo T C In this example the minimum value of th...

Страница 67: ...ows 3 1 MENU DESCRIPTION PROGRAM MANAGER ACCESSORIES double click TERMINAL double click Settings click Communications click and select parameters see list below click OK move the cursor to File click...

Страница 68: ...me of the connection e g HMI41 in the appropriate field and select an icon if available click OK Connection Description type the name of the connection e g HMI41 in the appropriate field and select an...

Страница 69: ...ing Log OK data RH T Td 12 54 21 53 8 48 1 12 10 21 23 9 16 2 12 18 21 18 9 12 3 12 12 21 15 9 21 4 12 16 21 14 9 18 5 12 09 21 12 9 27 6 12 09 21 09 9 28 If you know the starting time of the automati...

Страница 70: ...ts of each command type HELP command name e g PLAY and press ENTER help play Command PLAY Purpose Send recordings from memory to serial port Usage PLAY hh mm cr hh mm rec starting time optional if com...

Страница 71: ...the text SEtUP appears on the display DISPLAY WHAT TO DO PRESS Wait for a few seconds set C Select the display units 0 metric units 1 non metric units number up or number down ENTER to scroll the menu...

Страница 72: ...fter 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 see the operating manual Other settings are mean...

Страница 73: ...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 warrant...

Страница 74: ...www vaisala com M210317EN...

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