Burkert 8222 ELEMENT neutrino Manuel Utilisateur page 36

10.3. choosing the conductivity or
temperature range associated
with the 4-20 mA output
When the device is switched on and every 10 seconds afterwards, the
red LED on the connection box flashes:
• once if the transmitter is equipped with a C=1 sensor
• twice if the transmitter is equipped with a C=0,1 sensor
• three times if the transmitter is equipped with a C=0,01 sensor.
The selector (see Fig. 20) is used to choose the conductivity or tem-
perature range associated with the 4-20 mA output. The 16 available
ranges each correspond to one position on the selector: from 0 to 9
and A to F (the uneven positions are marked by a full stop); details are
given in the table hereafter:
Selector position
0 (default position)
1
2
3
4
5
6
7
8
9
A
30
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4-20 mA output range
0...10 mS/cm
0...5 mS/cm
0...2 mS/cm
0...1 mS/cm
0...500 µS/cm
0...200 µS/cm
0...100 µS/cm
0...50 µS/cm
0...20 µS/cm
0...10 µS/cm
0...5 µS/cm
Type 8222 ELEMENT neutrino
Adjustment
Selector position
B
C
D
E
F
→
Position the red mark of the selector on the desired range (see
Fig. 20). In the example in Fig. 20, the selector is placed on
position 5.
10.4. checking the cell constant of the
conductivity sensor
• Each sensor is delivered calibrated.
Take the temperature compensation into account.
• The following procedure makes it possible to check the exactness
of the transmitter:
→
Prepare a calibration solution adapted to your process or the
sensor (see § 12.Spare parts and accessories).
→
Place the sensor into the calibration solution.
→
Wait for the temperature to stabilise.
→
Check the exactness of the measured value transmitted by the
transmitter to the acquisition system (PLC, ...).
→
If necessary, correct the measure on the acquisition system
(PLC, ...).
english
4-20 mA output range
0...2 µS/cm
0...1 µS/cm
0...1 µS/cm
0...1 µS/cm
-40°C...130°C