Bacharach Comfort Chek 400, Руководство по эксплуатации, Страница: 17 / 20

Comfort Chek

400 Operation Manual
1509-9000 Rev 4 11
4.12. RH Calibration Overview
The meter defaults to be calibrated at 33% RH and 75% salt solution. The ambient
condition is recommended to be at 25° C with stable humidity (it’s better to be close to
the calibration value). To abort the calibration, switch the instrument off at any time.
CAUTION:
Do not calibrate the humidity without the default calibration salt solution
as it will cause permanent damage to the RH sensor.
4.13. 33% Calibration
Plug the sensor probe into a 33% salt solution bottle. Hold down the CAL Esc button
and DP/WBT button while in normal operating mode to enter the 33% calibrating
mode. CAL and calibration value (32.7% if at 25° C) are blinking on the LCD with
current temperature displayed on the lower left side.
The instrument is now calibrating and will finish in approximately 60 minutes when
CAL and humidity stop blinking.
Figure 4-12. 33% Cal Mode Figure 4-13. Cal Mode Finished
4.14. 75% Calibration
After 33% calibration, plug the sensor probe into a 75% salt solution bottle, then press
MNX/AV to enter 75% calibration.
CAL and calibrating value (75.2% if at 25° C) are blinking on the LCD with current
temperature indicated at the lower left corner. The instrument is now calibrating and
will finish in approximately 60 minutes when CAL and humidity stop blinking and the
instrument returns to normal operating mode.
NOTE
: To calibrate 33% only, press CAL Esc and exit when 33% calibration is
complete. To calibrate 75% only, press MODE (arrow up) or DP/WBT (arrow down)
within 5 minutes of initializing 33% calibration.