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HMI41 AND PROBES

M210316EN-A Operating Manual

Contents

1. THE HMI41 INDICATOR AND PROBES............................................................................... 1

2. TO BE NOTED IN THE MEASUREMENT OF HUMIDITY..................................................... 3

3. GETTING STARTED............................................................................................................ 4

3.1 Inserting the batteries............................................................................................. 4

3.2 Connecting the probes ........................................................................................... 4

4. TAKING MEASUREMENTS ................................................................................................. 5

4.2 Starting the measurements .................................................................................... 5

4.2 Measurement readings on display ......................................................................... 6

4.3 HOLD-mode ............................................................................................................. 7

5. CALIBRATION..................................................................................................................... 8

5.1 Calibration with trimmer potentiometers............................................................... 8

5.2 Calibration with HMI41 software commands ....................................................... 10

6. HMI41 AND DATA COLLECTING ...................................................................................... 20

6.1 Entering the data collecting mode ....................................................................... 20

6.2 Manual data collecting.......................................................................................... 21

6.3 Setting the measurement duration....................................................................... 22

6.4 Setting the measurement interval ........................................................................ 22

6.5 Reading the measurement results ....................................................................... 23

7. TRANSFERRING THE STORED READINGS TO A PC...................................................... 26

7.1 Giving the communication parameters................................................................ 26

7.2 Transferring the data ............................................................................................ 29

8. CHANGING THE SETTINGS.............................................................................................. 33

8.1 Entering the setup mode ...................................................................................... 33

8.2 Selecting the display units ................................................................................... 34

8.3 Setting the automatic power-off function............................................................ 34

8.4 Selecting the display quantities........................................................................... 35

8.5 Setting the pressure for mixing ratio and wet bulb temperature calculations . 35

8.6 Selecting the probe type....................................................................................... 36

9. MAINTENANCE ................................................................................................................. 37

9.1 Changing the HUMICAP



180 humidity sensor..................................................... 37

9.2 Chemical tolerances of the HUMICAP



180 sensor.............................................. 37

9.3 Using the HMP46 in high temperatures ............................................................... 37

9.4 Spare parts and accessories ................................................................................ 38

1 2 3 4 5 6 7 8 ... 71 72

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Vaisala HUMICAP HMP46 Guía de usuario Pagina 3