Gestra LRR1-51 Blowdown Controller 24v
The conductivity controller LRR 1-51 used in conjunction with conductivity electrodes LRG 1.-.. and conductivity transmitter LRGT 1.-.. is used as a conductivity controller and limit switch, in places such as steam boilers, (pressurized) hot water installations as well as condensate and, feedwater tanks.

The conductivity controller indicates when the MAX conductivity limit is reached and opens or closes a continuous blowdown valve.

The conductivity controller LRR 1-51 can be used together with conductivity electrodes and transmitters in the following equipment combinations:
Conductivity controller LRR 1-50 combined with conductivity electrodes LRG 12-2, LRG 16-4, LRG 16-9, LRG 17-1, or LRG 19-1.