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NH 500/TC
Getting the sensor
ready for
measuring
Typical calibration
line of an ammonia
electrode
On delivery, the electrode is equipped with the storing cap (black, without the
white, gas-permeable membrane).
l Remove the storing cap.
l Rinse the electrode with deionized water.
l Fill approx. 1 ml NH
l Remove air bubbles in the electrolyte by knocking.
l Screw the membrane cap on the electrode.
l Connect the electrode to the meter using the connection cable.
l Keep the storing cap. It serves as a protective cap if the
electrode is stored for a longer period of time.
4
Measuring / operation
4.1
Calibration
Note
For calibration, please refer to the operating manual of the measuring
instrument.
Electrode voltage
mV
-200
-160
-120
-80
-40
0
40
80
0.1
-6
-5
10
10
electrolyte solution into a membrane cap.
3
~ 55 ... 59 mV
tenfold
concentration change
1
10
100
-4
-3
10
10
10
Measuring / operation
1000
mg/l NH
-2
-1
mol/l NH
10
+
4
+
4
13
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