Knick Stratos Pro A2 Oxy Série Guide Rapide page 11

Display
Slope Calibration (Medium: Air)
Action
Select calibration.
Place sensor in air,
press enter to start.
Device goes to HOLD
mode.
Enter relative humidity
using arrow keys
Press enter to proceed.
Enter cal pressure using
arrow keys
Press enter to proceed.
Drift check:
Display of:
Sensor current (nA)
Response time (s)
Temperature (°C/°F)
Press enter to proceed.
Display of calibration
data (slope and zero).
Press enter to proceed.
Display of selected
process variable (here:
%vol). Now the device is
in HOLD mode: Reinstall
the sensor and check
whether the message
is OK.
MEAS ends calibra-
tion, REPEAT permits
repetition.
Remark
"CAL WATER" or
"CAL AIR" is selected
in the confi guration.
Default for relative
humidity in air:
rH = 50%
Default: 1.000 bar
Unit bar/kpa/PSI
The drift check can
take some minutes.
After end of calibra-
tion, the outputs
remain in HOLD
mode for a short
time.
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