An explosion proof function control with transmitter is used to permanently monitor the functionality of a suction unit.
The device is gas-proof and explosion-proof and is able to display the position of a swiveling pipe in a container. When the liquid level inside the container is changed or the swiveling pipe is moved up or down, an actuating tape is wound up or down, depending of the movement of the pipe. The tape is kept strained by a clockwork motor, which is able to transmit its movements to the transmitter. The transmitter then displays the position of the pipe in the measuring station of the facility.