Dissolved Oxygen; Measuring; Measuring D.o - wtw inoLab Multi 9620 IDS Operating Manual

Dissolved oxygen

Selecting the
displayed
measured parameter
Salinity correction
70
8 Dissolved oxygen
8.1

Measuring

8.1.1 Measuring D.O.

The sensor connection and the USB-B (USB Device) interface are
galvanically insulated. This facilitates interference-free measure-
ments also in the following cases:
 Measurement in grounded test samples
 Measurement with several sensors connected to one
Multi 9620 IDS in one test sample
1. Connect the IDS-D.O. sensor to the meter.
The D.O. measuring screen is displayed.
2. If necessary, select the measured parameter with <M>.
3. Check or calibrate the meter with the sensor.
Only in special cases does the FDO
ibration. Regular FDO
4. Immerse the D.O. sensor in the test sample.
Info
01.09.2017 08:00
You can switch between the following displays with <M>:
 D.O. concentration [mg/l]
 D.O. saturation [%]
 D.O. partial pressure [mbar].
When measuring the D.O. concentration [mg/l] of solutions with a salt content
of more than 1 g/l a salinity correction is required. For this, you have to mea-
inoLab
®
925-D.O. sensor require cal-
®
Checks are sufficient.
®
Multi 9620 IDS
ba77173e04 12/2017