18
To supply the conductivity transmitter with 24 V DC, a safety power supply unit (PSU), e.g. Siemens
SITOP PSU100C 24V/0.6A, must be used; this must provide a level of isolation against dangerous
contact voltages that at least meets the requirements for double or reinforced insulation as per
DIN EN 50178 or DIN EN 61010-1 or DIN EN 60730-1 or DIN EN 60950 (electrically protective separa-
tion). The PSU must be equipped with a protective device to DIN EN 61010-1.
Tools
Screwdriver, size 1
Screwdriver, size 2.5, fully insulated to VDE 0680-1
Safety power supply unit for LRGT 16-1, LRGT 16-2, LRGT 17-1
Electrical connection
Factory settings
The conductivity transmitter is supplied with the following factory-set default values:
LRGT 16-1, LRGT 17-1
Measuring range:
0.5 µS/cm - 500 µS/cm (at 25°C) as the
preferred measuring range
Temperature coefficient:
2.1 (% / °C)
LRGT 16-2
Measuring range:
100 µS/cm - 7000 µS/cm (at 25°C)
Temperature coefficient:
2.1 (% / °C)
continued
