When Should You Check The Sensor; Perform A Fdo ® Check - wtw inoLab Multi 9310 IDS Operating Manual

®
inoLab Multi 9310 IDS
ba75937e10 08/2021

7.2.2 When should you check the sensor?

Checking can be useful in the following cases:
 When the check interval has expired
(the [check] status indicator is displayed).
 If the measured values seem to be implausible
 If you assume that the sensor cap is contaminated or at the end of
its lifetime
 After the sensor cap was exchanged
 Routinely within the framework of the company quality assurance
7.2.3 Perform a FDO
Proceed as follows to carry out the FDO
1. Connect the D.O. sensor to the meter.
Place the D.O. sensor in the FDO
2.
Close the check and storage vessel FDO
3.
The sponge in the check and storage beaker must be moist (not
wet). Leave the sensor in the check and storage beaker long
enough so it can
adapt to the ambient temperature.
4. In the menu for measurement and calibration settings (
Check / Start FDO Check), start the FDO
The meter switches to the measured parameter, %.
O
2
99.8
25.0
FDO Check
[t90= 30 s]
[HOLD]
01.02.2014
5. Start the measurement with
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
®
Check
®
Check:
®
Check check and storage vessel.
%
°C
08:00
<ENTER>
Dissolved oxygen
®
Check.
<ENTER>
®
Check.
.
/ FDO
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