DF series Level Switches
The DF series are diaphragm operated “hydrostatic head pressure” level switches. A pressure sensitive diaphragm operates a snap-switch that can be wired directly to electric pilot circuits to control pumps at predetermined levels. Typical application is to start and stop electric driven pump(s) to maintain tank levels. It is also applicable to engine driven pumps.
This simple level switch is highly reliable and can be worked into almost any new or existing system without major
modification or special tools.
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Notes
SPDT (standard–all models):
- 5 A @ 125, 250, or 480 VAC
- 1/2 A @ 125 VDC, 1/4 A @ 250 VDC
DPDT (optional):
- 10 A @ 28 VDC
- 10 A @ 120, 230 VAC
Case/Lid: Aluminum (standard).
Bottom Plate: Glass-filled Nylon.
Process Connection: 1 NPT (standard).
Maximum Pressure Rating: 25 psi (172 kPa [1.72 Bar]).
Conduit Connection (electrical): 1/2 NPT.
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