General Tools and Instruments CDM7722 - Manual (Page 12)

11
Plug the sensor probe into 33% salt
bottle. Hold down and under
normal mode to enter 33% calibration
(Fig.17). “CAL” and calibrating value
(32.7% if at
are blinking on the
LCD with current temperature at the left.
Meter is now calibrating, and will finish
in about 60 minutes when “CAL” and
humidity stop blinking. (Fig.18)
o 25 C)
The meter defaults to be calibrated the
humidity with 33% and 75% salt solution.
The ambient condition is recommended
o to be at 25 C and stable humidity(better
to be close to the calibrating value). To
abort calibration, hold down for more
than 1second at any time.
(7722/77232) RH CALIBRATION
% %
O O
Fig. 17
% %
O O
Fig. 18
After 33% calibration, plug the sensor
probe into 75% salt bottle, then press
to enter 75% calibration (Fig.19).
CAUTION:
Do not calibrate the humidity without
the default calibration salt. Otherwise,
it will cause permanent damage.
Contact the dealer for calibration salt
or services.
M / X N
AVG CAL
ESC
CAL
ESC
SET SET
RESET RESET
33% calibration
75% calibration