Flowserve LRGT16-1 Spector compact Conductivity Transmitter System - Manual (Page 12)

Commissioning Procedure
Check wiring
1. Make sure that the conductivity transmitter system is wired in accordance with the
wiring diagram.
2. Check that the supply voltage corresponds to the name plate rating.
Set code switch
The transmitter is parameterised by means of a ten-pole code switch.
This code switch can also be used to adjust the cell constant and trigger off the functional
test.
The individual switch positions can be changed by using e. g. a ball pen.
Factory setting
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10
ON ON ON OFF ON ON OFF OFF OFF OFF
In the following table the factory setting is highlighted in grey:
Adjust measuring length (control range) and actual value output
Code switch Control range Current output mA = µS/cm
1 2 3 [ µS/cm at 25 °C] 4 mA correspond to 20 mA correspond to
OFF OFF OFF 20 20
ON OFF OFF 100 100
OFF ON OFF 200 200
ON ON OFF 500 500
OFF OFF ON 1000 1000
ON OFF ON 2000 2000
OFF ON ON 6000 6000
ON ON ON
0.5
12000
0.5
12000
During the commissioning procedure (when the supply voltage is applied) the first output
will be 4 mA, then the output current increases until it reaches the actual value.
Check temperature coefficient Tk setting
For a linear compensation of the measured conductivity value based at 25 °C the
temperature coefficient Tk is set at our works to 2.1 % per °C. Once the service
temperature is reached you can check this setting by carrying out a comparison
measurement - e. g. as part of the commissioning procedure. If there is a deviation
between the indicated conductivity and the measured comparison value you can correct
the measurement result of the transmitter by adjusting a lower or higher temperature
coefficient. Continue modifying the Tk setting until the indicated conductivity value and
measured comparison value agree.
Code switch Temperature coefficient
Tk [%/°C]
4 5 6 7
OFF OFF OFF OFF 0 (no compensation)
ON OFF OFF OFF 1.6
OFF ON OFF OFF 1.7
ON ON OFF OFF 1.8
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