Vaisala HMT100 - Manual (Page 30)

User's Guide ______________________________________________________________________
30 __________________________________________________________________ M210701EN-D
1. Connect the 211339 HM70-connection cable to the SERVICE PORT
connector on the HMT100 motherboard (see Figure 9 on page 22).
2. Connect the other end of the connection cable to either of the
HM70's connector ports located on the bottom of the indicator (see
Figure 14 above).
3. Turn on both devices (or just HM70, in case that HMT100 is on
continuously).
4. The reading of the transmitter is shown on the top or middle row of
the indicator display, depending on which connector port the
connection cable is connected to.
5. Press the ADJ button on the HMT100 motherboard to open the
adjustment mode. The indicator LED on the HMT100 motherboard
starts flashing.
NOTE From this point onward, the adjustment is carried out using the MI70
indicator. When operating the MI70, do not press the buttons too quickly
or the calibration may fail. Wait for one second between each press.
6. Press OK to start adjustment.
7. Check the environment settings if needed. Otherwise, press NO .
Select RH or T adjustment . Continue according to the directions of the
desired adjustment method.
Field Checking and Adjustment Using a Calibrated
Reference Probe
Follow steps 1 to 7 on page 30 and continue as follows:
8. Check that the probes are located in equal conditions and wait
until the readings have stabilized (may take 30 minutes or
more). If you are close to the probes, do not breath in their
direction.
9. Press ADJUST to continue adjusting.
10. Choose To same as RH
I/II
from the MI70 adjustment menu, press
SELECT (MI70 automatically recognizes which port the HMP70
series probe is connected to).
11. Confirm the adjustment by pressing YES .
12. The adjustment is done. Press BACK and EXIT to return to the
basic display.
13. Turn off the MI70 and detach the connection cable.