USER'S GUIDE Vaisala HUMICAP® Indicator HMI41 and Probes HMP41/45/46 M210316EN-A
PUBLISHED BY Vaisala Oyj P.O. Box 26 FIN-00421 Helsinki Finland Phone (int.): +358 9 8949 1 Fax: +358 9 8949 2227 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), nor may its contents be communicated to a third party without prior written permission of the copyright holder. The contents are subject to change without prior notice.
HMI41 AND PROBES Operating Manual M210316EN-A Contents 1. THE HMI41 INDICATOR AND PROBES............................................................................... 1 2. TO BE NOTED IN THE MEASUREMENT OF HUMIDITY ..................................................... 3 3. GETTING STARTED ............................................................................................................ 4 4. 5. 6. 7. 8. 9. 3.1 Inserting the batteries..................................................
HMI41 AND PROBES Operating Manual M210316EN-A 10. IN CASE OF ERROR .......................................................................................................... 39 10.1 Trouble shooting ................................................................................................... 39 10.2 Checking the settings ........................................................................................... 40 11. TECHNICAL DATA................................................................
HMI41 AND PROBES Operating Manual M210316EN-A 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 use, spot checking etc. When equipped with optional calibration cables, the HMI41 can also be used as a field calibrator for most Vaisala transmitters.
HMI41 AND PROBES Operating Manual M210316EN-A 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 features an automatic power-off function which can be disabled, and a continuously updated display.
HMI41 AND PROBES Operating Manual M210316EN-A 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 an error. If the temperature is +20 °C (+68 °F) and the relative humidity is 50 %RH, a difference of +1 °C between the measured object and the sensor causes an error of +3 %RH.
HMI41 AND PROBES Operating Manual M210316EN-A 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 close the lid carefully. 3.2 Connecting the probes After having inserted the batteries, connect the probe you wish to use.
HMI41 AND PROBES Operating Manual M210316EN-A 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 % Td °C °F T °C °F P set min max g/m hPa hyst hold Lo bat Hi Within a couple of seconds, the display changes to show the software version and then the probe type indication (41.45 or 42.
HMI41 AND PROBES Operating Manual M210316EN-A 4.65 V, the indicator turns itself off to prevent erroneous measurements and readings. Should this happen, replace the batteries. 4.
HMI41 AND PROBES Operating Manual M210316EN-A 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 % T °C hold With MODE or ENTER, the display returns to the normal display mode. If the indicator turns itself off with the automatic power-off function during the HOLD-mode, it wakes up in the same mode when turned on again.
HMI41 AND PROBES Operating Manual 5. M210316EN-A 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 changed. 5.1 Calibration with trimmer potentiometers 5.1.1 Humidity calibration Humidity calibration of the probes is preferably done by adjusting the trimmer potentiometers.
HMI41 AND PROBES Operating Manual M210316EN-A 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 temperature. Unscrew the plastic grid (HMP41 and HMP45) or the sintered filter (HMP46) of the probe. • Insert the probe into a measurement hole of the LiCl salt chamber in the humidity calibrator.
HMI41 AND PROBES Operating Manual M210316EN-A 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 LiCl and the NaCl (K2SO4) salt chambers until the reading is correct. 5.2 Calibration with HMI41 software commands Calibration can also be done with the HMI41 software commands.
HMI41 AND PROBES Operating Manual M210316EN-A 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 acknowledged with ENTER. In the following, you will find a list of these calibration options. RH T Default calibration restores the factory settings of the humidity and temperature calibrations.
HMI41 AND PROBES Operating Manual M210316EN-A 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 blinking: RH % set The blinking number indicates the humidity reference value in the HMI41 memory.
HMI41 AND PROBES Operating Manual M210316EN-A 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.
HMI41 AND PROBES Operating Manual M210316EN-A 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. Check the salt chamber temperature, read the closest humidity value in the calibration table and adjust the display with buttons ▲ and ▼ to correspond to the value given in the table.
HMI41 AND PROBES Operating Manual M210316EN-A 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. Press ENTER again to conclude the calibration. If the calibration has been successful, the following message appears: The correction data has now been calculated and stored in the HMI41 memory.
HMI41 AND PROBES Operating Manual M210316EN-A set Then press MODE four times, and the following appears: T set Press ENTER to activate the one point temperature calibration mode. A message similar to the following appears with the first line blinking: T °C set The blinking number indicates the temperature reference value stored in the HMI41 memory.
HMI41 AND PROBES Operating Manual M210316EN-A 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 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.
HMI41 AND PROBES Operating Manual T set M210316EN-A °C Lo The blinking number indicates the value of the lower temperature reference stored in the HMI41 memory. Insert the probe to the lower reference temperature.
HMI41 AND PROBES Operating Manual M210316EN-A T °C Hi 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 been calculated and stored in the HMI41 memory. The HMI41 returns automatically to the selection of the display units, and can be turned off.
HMI41 AND PROBES Operating Manual 6. M210316EN-A 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 the automatic power-off function is not active during data collecting even if previously selected (see Chapter 8.3). When the data collecting has ended, the automatic power-off function becomes active again. 6.
HMI41 AND PROBES Operating Manual M210316EN-A 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 % T set °C The probe is now taking measurements and you can store the readings at appropriate intervals by pressing the button HOLD.
HMI41 AND PROBES Operating Manual 6.3 M210316EN-A 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 display: bat (previously set duration) In this mode, you can set the time between the first and the last measurement stored, e.g. 30 minutes or 3 days.
HMI41 AND PROBES Operating Manual M210316EN-A 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 display indicates that there is not enough memory for the chosen interval; select a longer interval.
HMI41 AND PROBES Operating Manual M210316EN-A 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 the reading on the first 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 seconds the indicator returns to the previous display.
HMI41 AND PROBES Operating Manual M210316EN-A 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 minimum readings measured for the quantities on the display. HI and LO tell you whether the reading observed is the one on the first line (HI) or the one on the second line (LO).
HMI41 AND PROBES Operating Manual 7. M210316EN-A 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 serial connection cable (order code 19446ZZ) to the appropriate connectors on your PC and in the HMI41: connect the serial cable to the EXT connector Figure 7.1 7.
HMI41 AND PROBES Operating Manual M210316EN-A NOTE: select the connector according to your computer. Select the connector first and give then other parameters Figure 7.1.1 Giving the communication parameters in Windows 3.
HMI41 AND PROBES Operating Manual M210316EN-A Table 7.1.2 Giving parameters in Windows 95 and Windows NT WINDOWS 95 MENU Start ò Programs ò Accessories ò HyperTerminal ò Hypertrm ò Connection Description WHAT TO DO move the cursor to: move the cursor to: move the cursor to: click move the cursor to: double click type the name of the connection (e.g. HMI41) in the appropriate field and select an icon if available; click OK.
HMI41 AND PROBES Operating Manual M210316EN-A Figure 7.1.2 7.2 Selecting the parameters in Windows 95 and NT 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 for future use. To start transferring the data, make sure that the HMI41 is connected to a serial port of your computer and that the terminal session is open. Turn the HMI41 on with the ON/OFF button.
HMI41 AND PROBES Operating Manual 7.2.1 M210316EN-A PLAY Transferring the data To transfer the data on your PC, type outputting automatically stored data: PLAY and press ENTER. An example of >play Reading Log... OK data 0 1 2 3 4 5 6 > hh:mm:ss 00:00:00 00:01:00 00:02:00 00:03:00 00:04:00 00:05:00 00:06:00 RH 12.54 12.10 12.18 12.12 12.16 12.09 12.09 T 21.53 21.23 21.18 21.15 21.14 21.12 21.09 Td -8.48 -9.16 -9.12 -9.21 -9.18 -9.27 -9.
HMI41 AND PROBES Operating Manual M210316EN-A > 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 > 7.2.3 HELP 38,72 21,61 7,01 Outputting available commands and their contents If you wish to see which commands are available, type HELP and press ENTER.
HMI41 AND PROBES Operating Manual M210316EN-A 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).
HMI41 AND PROBES Operating Manual M210316EN-A 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 the instrument label. The factory settings of the HMI41 are the following: • display units: 0 (metric) • automatic power-off: 5 minutes • display quantities: 0 (= RH, T, Td) • pressure: 1013.
HMI41 AND PROBES Operating Manual M210316EN-A °C set You can scroll the setup menu by pressing ENTER. 8.2 Selecting the display units °C set 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 display changes accordingly. If you do not wish to change any other settings, press the ON/OFF button.
HMI41 AND PROBES Operating Manual M210316EN-A 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. The number on the display indicates the following quantities: 0 = RH, T, Td 1 = RH, T, Td, abs 2 = RH, T, Td, Tw 3 = RH, T, Td, x The number is changed with buttons ▲ and ▼.
HMI41 AND PROBES Operating Manual 8.6 M210316EN-A 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 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.
HMI41 AND PROBES Operating Manual M210316EN-A 9. MAINTENANCE 9.1 Changing the HUMICAP180 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. Calibrate the probe using a two-point calibration procedure (see section 5.2.4). 9.
HMI41 AND PROBES Operating Manual 9.
HMI41 AND PROBES Operating Manual M210316EN-A 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 indicator does not function as it should, first check that the probe is correctly connected. Then check that the filter and grid are clean. 10.
HMI41 AND PROBES Operating Manual 10.2 M210316EN-A Checking the settings Turn the HMI41 on and enter the setup mode (see Chapter 8). Make sure that the following settings are correct: setting probe start (*) baud seri calib correct value AUT (all probes) or 1 (with HMP41/45) or 2 (with HMP46) 1 4.8 E.7.
HMI41 AND PROBES Operating Manual M210316EN-A 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 humidity, wet bulb temperature, mixing ratio Resolution 0.1 %RH; 0.1 °C Power supply 4 batteries, type AA (IEC LR6) Battery operation time 72 h continuous use Operating humidity range 0...
HMI41 AND PROBES Operating Manual 11.2 M210316EN-A 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 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 sintered filter 15 s Humidity sensor HUMICAP® 180 11.2.
HMI41 AND PROBES Operating Manual M210316EN-A 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) when calibrated against salt solutions (ASTM E104-85): ±2 %RH (0...90 %RH) ±3 %RH (90...100 %RH) Temperature dependence: error %RH 2 1.5 1 0.5 0 -0.5 -1 -1.
HMI41 AND PROBES Operating Manual M210316EN-A 11.3.3 General -20...+60 °C -40...+100 °C (temporarily + 180 °C) -40...+80 °C Operating temperature range sensor head Storage temperature range Material: handle pipe cable Housing classification (electronics) Weight 11.4 ABS plastic stainless steel PVC spiral cable IP65 (NEMA 4) 450 g (incl.
HMI41 AND PROBES Operating Manual M210316EN-A T/°C Accuracy of mixing ratio (g/kg) with ambient pressure of 1013.25 mbar RH/% 10 20 30 40 50 60 70 80 0.002 0.002 0.002 0.002 0.003 0.003 0.003 0.003 -40 0.014 0.015 0.017 0.018 0.019 0.020 0.022 0.023 -20 0.08 0.09 0.09 0.10 0.10 0.11 0.12 0.12 0 0.31 0.33 0.35 0.37 0.39 0.41 0.43 0.45 20 0.97 1.03 1.10 1.17 1.24 1.31 1.38 1.46 40 2.70 2.94 3.46 3.76 3.72 4.08 4.42 4.79 60 6.78 7.80 9.00 10. 4 12.2 14.3 16.9 20.2 80 16.4 21.6 29.2 41.3 62.
HMI41 AND PROBES Operating Manual 11.4.2 M210316EN-A Accuracies in non-metric units Accuracy of dewpoint temperature (°F) T/°F -40 -4 32 68 104 140 176 212 248 284 320 RH/% 10 3.28 3.76 4.52 5.16 5.83 6.48 7.22 7.95 8.75 9.56 10.4 20 1.80 2.05 2.47 2.81 3.16 3.53 3.93 4.34 4.78 5.24 5.73 30 1.33 1.50 1.80 2.04 2.29 2.55 2.84 3.13 3.45 3.78 4.14 40 1.10 1.22 1.46 1.65 1.85 2.05 2.28 2.52 2.77 3.04 3.33 50 0.96 1.06 1.26 1.42 1.58 1.75 1.95 2.15 2.36 2.59 2.83 60 0.86 0.95 1.13 1.26 1.40 1.55 1.
HMI41 AND PROBES Operating Manual M210316EN-A Accuracy of wet bulb temperature (°F) T/°F 11.5 -40 -4 32 68 104 140 176 212 248 284 320 RH/% 10 0.36 0.37 0.49 0.82 1.51 2.62 4.03 5.52 6.94 8.23 9.41 20 0.36 0.38 0.50 0.81 1.39 2.16 2.96 3.68 4.33 4.92 5.48 30 0.36 0.38 0.51 0.81 1.29 1.86 2.38 2.84 3.26 3.65 4.03 40 0.36 0.38 0.51 0.80 1.21 1.64 2.03 2.36 2.67 2.97 3.26 50 0.36 0.39 0.52 0.79 1.15 1.49 1.79 2.05 2.30 2.54 2.78 60 0.36 0.39 0.53 0.78 1.09 1.37 1.61 1.83 2.04 2.25 2.45 70 0.36 0.
HMI41 AND PROBES Operating Manual M210316EN-A APPENDIX 1: QUICK REFERENCE TO COMMANDS 1. DISPLAY TEXTS AND OPERATING COMMANDS ................................................................ 49 2. CALIBRATION WITH THE HMI41 SOFTWARE ..................................................................... 51 2.1 One-point humidity calibration............................................................................ 51 2.2 Two-point humidity calibration........................................................
HMI41 AND PROBES Operating Manual M210316EN-A 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 OFF DISPLAY RH % Td °C°F T Pabs set min max DESCRIPTION The HMI41 has been turned on. °C°F g/m Pa hyst hold Lo bat Hi ’ The HMI41 software version and probe type indication.
HMI41 AND PROBES Operating Manual M210316EN-A MODE: outputting of the selected quantities RH % T °C Td T °C °C T °C abs g/m °C T °C °C T Relative humidity and temperature readings are output (automatically after power-up). PRESS MODE (the following appears): Dewpoint temperature and temperature readings are output.
HMI41 AND PROBES Operating Manual M210316EN-A 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 trimmer potentiometers of the probe. However, if only one probe is being used, the calibration can also be done according to the following instructions. 2.
HMI41 AND PROBES Operating Manual M210316EN-A 2.2 Two-point humidity calibration RH % Td °C °F T P set min max °C °F g/m hPa hyst hold Lo bat Hi Turn the HMI41 indicator on. Within 1-2 seconds press simultaneously buttons MODE and HOLD until the text SEtUP appears. Wait a few seconds. Press ENTER eight times. °C set Press MODE three times. set RH Press ENTER to activate two point humidity calibration.
HMI41 AND PROBES Operating Manual M210316EN-A 2.3 One-point temperature calibration RH % Td °C °F T P set min max °C °F g/m hPa hyst hold Lo bat Hi Turn the HMI41 indicator on. Within 1-2 seconds press simultaneously buttons MODE and HOLD until the text SEtUP appears. Wait a few seconds. Press ENTER eight times. °C set Press MODE four times. set Press ENTER to activate one point temperature calibration. T set T °C The reference reading stored in the HMI41 memory is blinking.
HMI41 AND PROBES Operating Manual M210316EN-A 2.4 Two-point temperature calibration RH % Td °C °F T P set min max °C °F g/m hPa hyst hold Lo bat Hi Turn the HMI41 indicator on. Within 1-2 seconds press simultaneously buttons MODE and HOLD until the text SEtUP appears. Wait a few seconds. Press ENTER eight times. °C set Press MODE five times. set Press ENTER to activate two-point temperature calibration. T set T set T The lower reference reading stored in the HMI41 memory is blinking.
HMI41 AND PROBES Operating Manual M210316EN-A 3. DATA COLLECTING MODE 3.1 Manual data collecting RH % Td °C°F T Pabs set min max °C°F g/m Pa hyst hold Lo bat Hi Turn the indicator on. Within 1 - 2 seconds press the button HOLD until the text REC AUTO appears, then release the button. Press the button MODE to enter the manual data collecting. Press ENTER to start the measurements. RH % T set °C The probe is now taking measurements.
HMI41 AND PROBES Operating Manual 3.2 M210316EN-A Setting the measurement duration for automatic data collecting RH % Td °C°F T °C°F Pabs set min max g/m Pa hyst hold Lo bat Hi Turn the indicator on. Within 1 - 2 seconds press the button HOLD until the text REC AUTO appears, then release the button. Press ENTER when the text REC AUTO is displayed. Previously set duration time appears.
HMI41 AND PROBES Operating Manual M210316EN-A 3.4 Reading the measurement results RH % Td °C°F T Pabs set min max °C°F g/m Pa hyst hold Lo bat Hi 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. Press ENTER.
HMI41 AND PROBES Operating Manual 3.4.1 MIN and MAX in the data collecting mode RH % min °C Hi RH % T °C Hi max RH T min RH T max 58 M210316EN-A % °C Lo % °C Lo 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.
HMI41 AND PROBES Operating Manual M210316EN-A 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.
HMI41 AND PROBES Operating Manual M210316EN-A Table 4.2 Giving parameters in Windows 95 and Windows NT WINDOWS 95 MENU Start ò Programs ò Accessories ò HyperTerminal ò Hypertrm ò Connection Description WHAT TO DO move the cursor to: move the cursor to: move the cursor to: click move the cursor to: double click type the name of the connection (e.g. HMI41) in the appropriate field and select an icon if available; click OK.
HMI41 AND PROBES Operating Manual M210316EN-A 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 0 1 2 3 4 5 6 > hh:mm:ss 00:00:00 00:01:00 00:02:00 00:03:00 00:04:00 00:05:00 00:06:00 RH 12.54 12.10 12.18 12.12 12.16 12.09 12.09 T 21.53 21.23 21.18 21.15 21.14 21.12 21.09 Td -8.48 -9.16 -9.12 -9.21 -9.18 -9.
HMI41 AND PROBES Operating Manual M210316EN-A 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 > 4.2.
HMI41 AND PROBES Operating Manual M210316EN-A 5. CHANGING THE SETTINGS The HMI41 factory settings are the following: - display units: - automatic power-off: - display quantities: - pressure: - probe type: - start: 0 5 0 1013.25 hPa AUT (metric) (minutes) (RH, T and Td) (1 hPa = 1 mbar) (or 1, see below) 1 Indicators marked with letters ID have the automatic probe recognition (AUT PROBE) as default, previous versions the probe type 1.
HMI41 AND PROBES Operating Manual M210316EN-A 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, see the operating manual. Other settings are meant for the HMI41 used as a field calibrator for Vaisala humidity transmitters. Do not change them. Press ON/OFF after probe type setting.
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.
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