Adjustable Level Sensor

924, 924S

Adjustable float activated simple switch device; used to monitor liquid level at a desired set point.

Standard Features

Four sensor length ranges

Fully adjustable within the sensor range length

Installs into a 2” female threaded opening

½” NPT fitting at top of sensor

Normally open switch easily converted to normally closed operation


Construction Details

Wires... PTFE jacketed wires

Floats... Nitrophyl®-M (924); 316 stainless steel (924S)

Tube...  brass (924); 304 stainless steel (924S)

Bushing... e-coated steel (924); 304 stainless steel (924S)


Operational Criteria—Electrical

100 watt resistive load, 300VAC - 700mA max / 350VDC - 1.0A max, SPST


*Switch ratings are for resistive loads only.

*Do not use for inductive loads.

*Compatible with 918S/D/Q Alarm Box and 918AC System Interface or similar listed systems that are designed for use with sensing devices located in a hazardous location.


Approved Use Locations

UL/ULC Class I, Div 1, Group D (when used in conjunction with the model 918AC, model 918S/D/Q, and model 918SB)



National Work Group on Leak Detection Evaluations list (; Florida DEP EQ-862

Fig Suffix Size Description Weight
924 0600 AS 6" Brass adjustable level sensor
924 1200 AS 12" Brass adjustable level sensor
924 2000 AS 20" Brass adjustable level sensor
924 3000 AS 30" Brass adjustable level sensor
924S 0600 AS 6" Stainless steel adjustable level sensor  
924S 1200 AS 12" Stainless steel adjustable level sensor  
924S 2000 AS 20" Stainless steel adjustable level sensor  
924S 3000 AS 30" Stainless steel adjustable level sensor  
925 0113 2B   Conduit junction housing (NEMA 4)  
925 0114 2B   Conduit junction housing (NEMA 7, Group C & D)  


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