Forbes Marshall offers Level Switches operating on different principles. Forbes Marshall is an ISO 9001 certified company that is into the manufacturing of engineering products for process industries across the world. The Level Switches operating on different principles are available for simple water level applications to complex process level switching in tanks and other process vessels. The Switch versions are for liquid level, interface level and particulate, granulate and powdered solids level measurement. There are also special versions with regard to Level Switches operating on different principles for sludge and water interface level measurement and switching. There are two versions of Level Switches operating on different principles available: Vibrating Fork type and the RF Admittance in Capacitance Field Type. Level Switches operating on different principles are available for mounting in tanks and vessels from either the top or from the side.