Gestra LRR 1-40 24V electronic board
BRAND : Gestra
Description
The continuous blowdown controller LRR 1?40 used in
conjunction with the conductivity sensing electrode LRG
16?40 constitutes a conductivity (TDS) monitoring and control
system. Electrical conductivity is used to measure boiler water
TDS (= Total Dissolved Solids). The blowdown controller
features the following functions:
? Two conductivity limits with one switchpoint each: TDS
high (max) alarm and TDS low (min) alarm. The TDS
low (min) alarm can alternatively be used to control an
intermittent blowdown valve.
? Three?position control within a predefined proportional
band.
? TDS level (conductivity) monitored and maintained within
a predefined control range.
? Stand?by input.
? 24 h purging pulse for continuous boiler blowdown.
The LRR 1?40 can, by choice, be provided with an actual value
output with a standard signal of 4 ? 20 mA. The TDS data are
transferred to the controller or another system component via
a CAN data bus. The controller and the conductivity sensing
electrode use the CANopen protocol.
Details
Description
The continuous blowdown controller LRR 1?40 used in
conjunction with the conductivity sensing electrode LRG
16?40 constitutes a conductivity (TDS) monitoring and control
system. Electrical conductivity is used to measure boiler water
TDS (= Total Dissolved Solids). The blowdown controller
features the following functions:
? Two conductivity limits with one switchpoint each: TDS
high (max) alarm and TDS low (min) alarm. The TDS
low (min) alarm can alternatively be used to control an
intermittent blowdown valve.
? Three?position control within a predefined proportional
band.
? TDS level (conductivity) monitored and maintained within
a predefined control range.
? Stand?by input.
? 24 h purging pulse for continuous boiler blowdown.
The LRR 1?40 can, by choice, be provided with an actual value
output with a standard signal of 4 ? 20 mA. The TDS data are
transferred to the controller or another system component via
a CAN data bus. The controller and the conductivity sensing
electrode use the CANopen protocol.
