Measuring The Temperature; Fdo ® Check (Checking The Fdo ® 925); Why Should You Check The Sensor - wtw inoLab Multi 9310 IDS Operating Manual

Dissolved oxygen
Criteria for a stable
measured value
48
You can prematurely terminate the Stability control function manu-
<ENTER>
ally with
prematurely terminated, the current measurement data are output
to the interface without the AutoRead info.
You can switch off the beep (see section 10.6 S
DENT SETTINGS
<ENTER>
3. Using
or
Release the frozen measured value again with
The [AR] status display disappears. The display switches back to the
previous indication.
The Stability control function checks whether the measured values are stable
within the monitored time interval.
Measured parameter
D.O. concentration
D.O. saturation
D.O. partial pressure
Temperature
The minimum duration until a measured value is assessed as stable is the mon-
itored time interval. The actual duration is mostly longer.

7.1.2 Measuring the temperature

For reproducible D.O. measurements, it is essential to measure the tempera-
ture of the test sample.
IDS D.O. sensors measure the temperature with a temperature sensor inte-
grated in the IDS sensor.
®
7.2 FDO Check (checking the FDO
The sensor is checked in water vapor-saturated air in the check and storage
®
vessel FDO Check.

7.2.1 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.
at any time. If the Stability control function is
, page 79).
, start a further measurement with stability control.
Time interval
20 seconds
20 seconds
20 seconds
15 seconds
®
inoLab Multi 9310 IDS
-
ENSOR INDEPEN
<AR> <M>
or
Stability in the time
interval
Δ : better than 0.03 mg/l
Δ : better than 0.4 %
Δ : Better than 0.8 mbar
Δ : better than 0.5 °C
®
925)
ba75937e10
-
.
08/2021