Vaisala Humicap HMW60U Guía de usuario descargar pdf (Pagina 51)

Chapter 9 ______________________________________ Calibration and Adjustment of Transmitters

VAISALA _______________________________________________________________________ 49

23. Confirm by pressing YES

24. Press BACK, EXIT, EXIT to return to the basic display.

Calibration and Adjustment of HMT320 Series

Transmitters

You can check and adjust both humidity and temperature channels.

Make the temperature adjustment first in case you adjust both

channels. Calibrate your transmitter against a calibrated reference

probe of HM70 or against a calibrator's reference humidity by using

MI70 indicator in communication. Follow the first 8 steps and

continue according to the chosen calibration method.

1. Connect the 211339-calibration cable to the RS232 connector in

the mother board of the HMP300-series transmitter

2. Connect the other end of the calibration cable to either of the

HM70's connector port located on the bottom of the indicator,

see Figure 7 on page 40.

3. Turn on both devices (the HMT300-series transmitter can be on

all the time).

4. The reading of the transmitter is shown on the first or middle

row of the display, depending on the connector port to which the

calibration cable is connected. Value of the port I is shown on

the upper row of the display and the value of the port II on the

lower row of the display. Difference of the readings is shown in

the lowest row.

5. Take off the CAL.DIS jumper from the motherboard of the

HMT300 transmitter. Now MI70 is moved into Adjustment

mode.

6. Press OK to start adjustment.

7. Select

RH or T, press SELECT.

8. Check the environment settings, if needed. Otherwise press

NO.

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Vaisala Humicap HMW60U Guía de usuario Pagina 51