GESTRA LRR 1-40, Original Installation Instructions

Page: 8 / 40

8
Technical Data
- continued -
LRR 1-40
- continued -
Other measuring ranges:
MIN limit (only via URB) adjustable between 0.5 μS/cm (0.25 ppm) and MAX limit –20 μS/cm (10 ppm),
MAX limit (only via URB) adjustable between end of measuring range and MIN limit +20 μS/cm (10 ppm).
MIN/MAX limit,
switching hystereses
MIN limit: +1 % of the adjusted MIN limit,
MAX limit: –1 % of the adjusted MAX limit.
Conductivity measuring ranges for actual value output 4 - 20 mA
LRG 16-40, LRG 17-40
Measuring ranges*) (µS/cm at 25 °C) Current output mA = µS/cm
Preferred measuring range up to 500 µS/cm
4 mA
corresponds to
20 mA
corresponds to
0.5
20
0.5
20
100 100
200 200
500 500
1000 1000
2000 2000
6000 6000
12000 12000
LRG 16-41
Measuring ranges*) (µS/cm at 25 °C) Current output mA = µS/cm
4 mA
corresponds to
20 mA
corresponds to
100
3000
100
3000
5000 5000
7000 7000
10000 10000
*) Conversion µS/cm in ppm (parts per million): 1 µS/cm = 0.5 ppm
Note
The electrical conductivity is measured in µS/cm. For ppm (parts per million) use the
following conversion: 1 μS/cm = 0.5 ppm.