Vaisala Calibration of Series HMDW6070 and HMP140 Transmitter with HMI41 - Manual (Page 21)

HMI41 Calibration Option
19116ZZ-U218en-1.1 Operating Manual
1996-08-29 17
If you press the HOLD button in the first T calibration mode, you will go on to
the second T calibration mode which is an alternative for the first one. A text
similar to the following is displayed:
T
T °C
°C
Numbers on the first line indicate how much the temperature measured by the
transmitter differs from that measured by the HMI41 reference probe.
Numbers on the second line indicate the temperature measured by the
reference probe. If you wish, you can now adjust the transmitter (by pressing
the HOLD button again you will return to the previous T calibration mode and
by pressing the MODE button you will return to the second RH calibration
mode):
•
Wait until the readings have stabilized and then adjust the calibration
potentiometer (Figures 3.2 - 3.4) until the numbers on the first line
are at zero. It is recommended to use the offset potentiometer.
•
After having completed the calibration, press ON/OFF and disconnect
the cable.
GUARANTEE
Vaisala issues a guarantee for the material and workmanship of this product
under normal operating conditions for one (1) year from the date of delivery.
Exceptional operating conditions, damage due to careless handling and mis-
application will void the guarantee.