Dissolved oxygen
Oxi 3310 IDS (Oxi 3315)
24
ba75944e02
10/2014
5
Dissolved oxygen
5.1
Measuring
5.1.1 Measuring D.O.
NOTE
When connecting a grounded PC/printer, measurements cannot be
performed in grounded media as the values would be incorrect. The USB
interface is not galvanically isolated.
Selecting the
displayed
measured parameter
You can switch between the following displays with
<M>
:
D.O. concentration [mg/l]
D.O. saturation [%]
D.O. partial pressure [mbar].
Salinity correction
When measuring the concentration of solutions with a salt content of more than
1 g/l, a salinity correction is required. For this, you have to measure and input
1.
Connect the 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
®
925 D.O. sensor require cal-
ibration. A regular FDO
®
check is sufficient.
4.
Immerse the D.O. sensor in the test sample.
O
2
mg/l
7.92
25.0
°C
[t90= 30 s]
01.02.2014
08:00
Info
USB output
If D.O. concentration [mg/l] is selected as the measured parameter,
low concentrations (below 1 mg/l) are automatically displayed with
the higher solution of 0.001 mg/l.
