Flowserve LRGT16-1 Spector compact Conductivity Transmitter System - Manual (Page 13)

Code switch Temperature coefficient
Tk [%/°C]
4 5 6 7
OFF OFF ON OFF 1.9
ON OFF ON OFF 2.0
OFF ON ON OFF 2.1
ON ON ON OFF 2.2
OFF OFF OFF
ON 2.3
ON OFF OFF ON 2.4
OFF ON OFF ON 2.5
ON ON OFF ON 2.6
OFF OFF ON ON 2.7
ON OFF ON ON 2.8
OFF ON ON ON 2.9
ON ON ON ON 3.0
Adaptation of the cell constant
The cell constant adjusted at our factory is a characteristic geometric quantity of the
equipment and influences the calculation of conductivity. However, during operation this
constant can drift, e. g. due to dirt accumulated on the measuring electrode. If the
indicated conductivity value deviates from the measured comparative value you can
correct the measurement result of the transmitter by re-adjusting the cell constant.
Depending on the deviation set code switches 8 or 9 to ON, the cell constant will then
change continuously. Observe the conductivity indication and when the indicated value
agrees with the comparison measurement set the switch back to OFF. Should an
adjustment not be possible remove the transmitter and clean the measuring surface.
To restore the factory setting of the cell constant - e. g. after cleaning the measuring
surface - set code switches 8 and 9 simultaneously to ON. After approx. 1 sec. switch back
to OFF. The factory setting is restored.
Code switch
Deviation of the indicated
conductivity 8 9 Function
non OFF OFF No change
Indicated value < Measured comparative
value ON OFF Cell constant increases
Indicated value > Measured comparative
value OFF ON Cell constant decreases
ON ON Restores factory setting
Functional Test
Use code switch 10 for performing a functional test. A value is simulated which exceeds
the final control range value and a current output of 20 mA is provided.
Code switch Functional test
10
OFF Normal operation
ON Simulation
Final control range value
exceeded
When the functional test is finished set code switch back to OFF.
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