O 2 -Calibratation; Calibration Interval; Calibration - Wohler WA 335 Instructions De Service

11.3 O -Calibratation
2

11.3.1 Calibration interval

11.3.2 Calibration

Fig. 60: O2- calibration
Error Message
Stabilization period
Perform an O
•
2
measurement and after replacing the
membrane set.
NOTE!
There is no need to remove the anti-collision
hood before the calibration.
Connect the O
•
switch it on.
Press O -key to select %.
•
2
• Hold the probe in air and wait a few minutes
until the reading is stabilized.
• Press and hold CAL-key for 2 seconds for
100 % saturation calibration.
CAL Icon is flashing in the LCD.
When the reading is stabilized after some
•
seconds, press ENTER.
or
• You can stop the calibration by pressing
CAL again.
After the calibration the displayed value should
be between
Nach der Kalibrierung sollte der angezeigte Wert
zwischen 99,0 % und 101,0 % liegen.
If the meter cannot perform a correct calibration,
ERR will flash on the display.
Possible reasons:
- electrolyte level too low
- defective probe
- insufficient adjustment time
Under the following conditions, the meter
requires an adaptation time of approx. 1 hour.
Switch the device on and leave it for about
•
one hour,
- when the O probe has just been connected to
2
–calibration before each
- Probe to the meter and
2
Calibration
EN
75