Connection box

Pressure level transmitter type 711,712,713

For level measurement in wells, basins or aerated tanks, the level transmitter has an electric cable with a vent pipe for venting. The pressure of the medium acts on the ceramic sensor which is deflected to transmit the pressure to the piezo-resistive bridge in the measuring sensor.

The signal from the measuring bridge is converted into a standardized current signal. The hydrostatic pressure which is proportional to the submersion depth acts on the diaphragm of the sensor. This pressure is compared with the atmospheric pressure which acts on the other side of the sensor by means of the vent pipe in the connecting cable (at relative pressure).

The connection box is equipped with a screw terminal block that allows the cable on the transmitter side to be connected to the cable on the sensing side.

The special feature of this box is that it protects the end of the capillary from dust and humidity while ensuring atmospheric pressure.