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A sensor is installed in the central pump housing to count the strokes. The diaphragm is scanned without physical contact by this sensor – ensuring safe monitoring totally independent of external influences and the pump’s mode of operation. The signal from the sensor is sent as output data to either existing detectors or to a digital counter (also supplied). When the pre-set value is reached the stroke counter can be shut down with, for example, a solenoid valve.

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The stroke counting system is available in five options:
SC1 – Stroke sensor (NAMUR type) also for explosion-proof zones
SC2 – Stroke counting system complete with sensor and counter
SC3 – Stroke counting system complete with sensor, counter and controller for explosion-proof zones
SC4 – Pneumatic stroke counting system with pressure transmitter
SC5 – Pneumatic stroke counting system with pressure transmitter and counter

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In cases where only the sensor id required (code SC1), it has to be connected to an existing controller with a Namur type inlet. For explosion-proof applications, the stroke counting option requires an intrinsically safe controller (code SC3), which had to be installed between the sensor and counter. The wiring diaphragm and technical data is supplied with the electric units. The controllers have to be installed an a suitalbe cabinet.

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