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Vaisala Calibration of Digital Transmitters with HMI41 User Manual

Page 31

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Appendix A _______________________________________________Quick Reference to Calibration

VAISALA _______________________________________________________________________ 29

Display:

What to Do

Press

RH

Calibration has been successful.

ON/OFF
(disconnect the cable)

RH

Calibration has not been
successful. Perform the
calibration again.

Offset and Gain Calibrations with HMI41 as a
Terminal

Display:

What to Do

Press

RH

set min max

hyst hold

Lo bat Hi

Pabs

Pa

g/m

T

Td

°C°F

°C°F

%

HMI41 has been turned on.

Indication of the software
version (if the version is 1.02 or
more).

bat Hi

Indication of the battery voltage.

RH

Select the desired calibration
mode:
offset : humidity < 65%RH
gain : humidity > 65%RH

▲ (number up) or
▼ (number down)
ENTER

RH

%

Let the readings stabilize.

MODE

RH

set

%

Set the blinking RH reading to
the correct value (e.g. to the
equilibrium RH of the salt
solution).

▲ (number up) or
▼ (number down)
ENTER to conclude