DESCRIPTION
Model VM is a simple, reliable low cost Vacuum switch that uses a spring loaded diaphragm as the sensing element. A Buna-N diaphragm is standard however a selection of other diaphragm materials are optionally available.

In operation, the diaphragm actuates a snap action electrical switch that insures a positive, instantaneous electrical contact under all operating conditions.

SPECIFICATIONS
Set Point Range - 4-30” Hg (102-762 mm Hg)
Set Point Tolerance - ±1“ Hg or 5% (25 mm Hg)
Max Operating pressure - 250 PSI (17 bar)
Switch Deadband (differential) - 20-40%
Current Rating - 5 A (to 24Vdc, to 240Vac),
    resistive (10 amp contact available as well
    as gold contact for low current applications,
    consult us please)
Media Connection - 1/8” NPT, 1/4” NPT
Circuit Form - SPST-NO, SPST-NC, SPDT, DPDT
Electrical Connections - 18” wire leads, 1/4”
    Spade, Weather Pack, Metri-pack, 8-32
    Terminals, DIN 43650A
Machined Switch Body - Brass
Diaphragm - Buna-N (consult us for other
    materials)