Our magnetic sensor type MS15 Ex, which may be used with  our magnetic level gauges, benefits from Ex d protection. A change of liquid level inside the chamber of a level gauge will displace the ball float; the magnetic field around the ball float will activate the sensor on the level in which it is fastened. A switch signal can be obtained at any desired level by fastening a sensor to the chamber in that level; more switches can be installed as long as there is enough space on the chamber. Depending on the customer’s needs, its switching system may be a DPST or SPDT latching contact. One sensor would support a range of 2 cm; the user will need more sensors to cover a longer distance.