Operating principle
The spring assists the buoyancy force change created as the liquid rises around the suspended displacer element. A liquid level change will allow a spring movement to operate the switch. 
With falling liquid level the lower displacer element has to be uncovered before the switch will reset.

Application
Displacement type level switch are widely used for Coaltar fuel tanks, Heavy fuel oil tanks, Setting tanks, Sludge tanks, Fresh water tanks, Lub.oil tanks, D.O tanks and others.

Technical date
Contact : electrical micro switch, change contact,
SPDT, DPDT
Switch rating : AC 250V/15A, AC 480V/15A,
DC 30V/6A Max. Pressure : 10 Kg/㎠
Max. Temperature : 180 ℃
IP Rating : IP 56
Connecting Size : 5K100A (STD.)
Material - Body, Cover : ALC, SS400
- Flange : SS400, SUS304
- Displacer : SUS304
- Guide Pipe : SUS304

Description of model

DM - 90□ - 1F

DM - 90□ - 1F - C

DM - 90□ - 1F - CT

DM - 90□ - 2F

DM - 90□ - 3F

DM - 90□ - 3F - C