The output signal of the PosiFlow® Sensor is an open-collector contact closure corresponding with each flow pulse. Additionally, a visual LED is mounted on the topside of the sensor. The LED is normally OFF, flashing green in sync with each output signal, and turns Red during abnormal pressure conditions.
The PosiFlow® will send out a signal with every stroke as long as there is liquid pumping against pressure. If the pump becomes either air-locked or in a dead head condition, the sensor will no longer output a signal. And unlike the competition, if the discharge line breaks or becomes disconnected, pressure will be lost and the PosiFlow® sensor will stop signaling flow.