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Low & High Alarm Level Switch 24VDC C/W 4-20 MA Output
Gestra Low & High Alarm Level Switch 24VDC C/W 4-20 MA Output
The level switch NRS 2-51, when operating in conjunction with level electrodes NRG 2.-.. and level transmitter NRGT 26-1 is used as a limit switch and water level controller in steam boilers, (pressurized) hot-water installations as well as condensate and feedwater tanks.
The level switch detects and indicates when the preset MIN or MAX water level is reached and switches the feedwater pump on and off (NRS 2-51).
The level switch is for use with level electrodes NRG 21-.. and NRG 26-21 and the level transmitter NRGT 26-1.
The level switch NRS 2-51 uses the level-dependent voltage signals emitted by the level electrodes NRG 2..-.. or the level-dependent current signal emitted by the level transmitter NRGT 26-1.
The level switch NRS 2-51 adjusts the input signal from 0 to 100 % of the boiler measuring range, and the switch points for MIN / MAX water level are adjusted accordingly within this measuring range. The seven-segment LED indicates the value during standard operation.
When the MIN or MAX water level occurs, the MIN or MAX output contact switches over after the de-energizing delay while illuminating the MIN or MAX LED.
The level switch NRS 2-51 also works as an on-off water level controller (fill or discharge control, switch-selectable). If the lower or upper switchpoint for water level control occurs, the controller output switches over according to the preset function and, consequently, switches the feedwater pump on or off. The amber LED illuminates when the level switch activates the feedwater pump.
The seven-segment LED display indicates any faults or malfunctions in the level electrode, the level transmitter, the electrical connection or the settings. a MIN and MAX alarm triggers in the event of a malfunction.
If errors occur only in the level switch NRS 2-50 / NRS 2-51, a MIN and MAX alarm is raised and restarts the system.
The adjustment of the parameter settings of the unit is possible, and a simulation of a MIN / MAX alarm via the rotary button.
Equipment is available to indicate water levels externally with a value output of 4 - 20 mA.
Gestra Low & High Alarm Level Switch 24VDC C/W 4-20 MA Output
The level switch NRS 2-51, when operating in conjunction with level electrodes NRG 2.-.. and level transmitter NRGT 26-1 is used as a limit switch and water level controller in steam boilers, (pressurized) hot-water installations as well as condensate and feedwater tanks.
The level switch detects and indicates when the preset MIN or MAX water level is reached and switches the feedwater pump on and off (NRS 2-51).
The level switch is for use with level electrodes NRG 21-.. and NRG 26-21 and the level transmitter NRGT 26-1.
The level switch NRS 2-51 uses the level-dependent voltage signals emitted by the level electrodes NRG 2..-.. or the level-dependent current signal emitted by the level transmitter NRGT 26-1.
The level switch NRS 2-51 adjusts the input signal from 0 to 100 % of the boiler measuring range, and the switch points for MIN / MAX water level are adjusted accordingly within this measuring range. The seven-segment LED indicates the value during standard operation.
When the MIN or MAX water level occurs, the MIN or MAX output contact switches over after the de-energizing delay while illuminating the MIN or MAX LED.
The level switch NRS 2-51 also works as an on-off water level controller (fill or discharge control, switch-selectable). If the lower or upper switchpoint for water level control occurs, the controller output switches over according to the preset function and, consequently, switches the feedwater pump on or off. The amber LED illuminates when the level switch activates the feedwater pump.
The seven-segment LED display indicates any faults or malfunctions in the level electrode, the level transmitter, the electrical connection or the settings. a MIN and MAX alarm triggers in the event of a malfunction.
If errors occur only in the level switch NRS 2-50 / NRS 2-51, a MIN and MAX alarm is raised and restarts the system.
The adjustment of the parameter settings of the unit is possible, and a simulation of a MIN / MAX alarm via the rotary button.
Equipment is available to indicate water levels externally with a value output of 4 - 20 mA.
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