The FP series pneumatic liquid level switch is a diaphragm actuated switch. They are designed for use in high viscous liquids. To operate, the FP requires only a standard 1/2” pipe in a material compatible with the liquid. They employ a minimum of moving parts, diaphragm moves a maximum of 2mm, none of which are in contact with the liquid.
Low cost point detection
Electric power not available
Pipe length to 5000mm
The SPDT micro switch in the FP is actuated by compression of a captive air column in the detecting pipe beneath the diaphragm.