wtw inoLab Multi 9620 IDS User Manual

inoLab
®
Multi 9620 IDS Dissolved oxygen
ba77173e04 12/2017 73
8.2 FDO
®
Check (checking the FDO 925)
8.2.1 Why should you check the sensor?
With the FDO
®
Check procedure you can find out in a simple manner whether
the FDO
®
925 D.O. sensor should be cleaned or calibrated.
8.2.2 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
8.2.3 Perform a FDO
®
Check
FDO
®
Check
procedure
Check in water vapor-saturated air.
To carry out the FDO
®
Check, use the check and storage vessel FDO
®
Check.
Stability control
(AutoRead)
During the FDO
®
Check the Stability control function (AutoRead) is automati-
cally activated.
Proceed as follows to carry out the FDO
®
Check:
1. Connect the D.O. sensor to the meter.
2. Place the D.O. sensor in the FDO
®
Check check and storage vessel.
The sponge in the check and storage vessel must be moist (not
wet). Leave the sensor in the check and storage vessel long
enough so it can adapt to the ambient temperature (min. 15 min-
utes).
3. In the measuring mode, use FDO Check / Start FDO Check to start the
FDO
®
Check.
The meter switches to the display of %.function is automatically acti-
vated.

wtw inoLab Multi 9620 IDS Specifications

General

Brand	wtw
Model	inoLab Multi 9620 IDS
Category	Measuring Instruments
Language	English