19
Commissioning procedure
Establishing the measuring range and actual value output
Set the parameters of the conductivity transmitter using the 10-pole code switch on the circuit board.
You can also adjust the cell constant and initiate a function test by changing the code switch settings.
The factory settings are shaded grey in the tables below.
1. Define the measuring range of the conductivity transmitter to suit the admissible conductivity range
of the steam boiler.
2. Set the desired measuring range via the code switch. To change the code switch settings you can use
a ball-point pen, for example.
Code switch
Measuring range
(µS/cm at 25 °C)
Current output mA = µS/cm
1
2
3
4 mA
corresponds to
20 mA
corresponds to
OFF
OFF
OFF
0.5
20
0.5
20
ON
OFF
OFF
100
100
OFF
ON
OFF
200
200
ON
ON
OFF
500
500
Factory settings
OFF
OFF
ON
1000
1000
ON
OFF
ON
2000
2000
OFF
ON
ON
6000
6000
ON
ON
ON
12000
12000
LRGT 16-1, LRGT 17-1
Code switch
Measuring range
(µS/cm at 25 °C)
Current output mA = µS/cm
1
2
3
4 mA
corresponds to
20 mA
corresponds to
OFF
OFF
OFF
100
3000
100
3000
ON
OFF
OFF
5000
5000
OFF
ON
OFF
7000
7000
Factory settings
ON
ON
OFF
10000
10000
LRGT 16-2
Please check that the conductivity transmitter is wired in accordance with the wiring diagram
Fig. 12, 13
and switch on mains voltage.
For commissioning, open the terminal box by unscrewing the cover screws
f
and removing the cover
g
. The arrow on this cover points to the name plate.
Fig. 1, 9
Switch on mains voltage and open the terminal box
