Catalogue - Pressure Switch - GEMS SENSORS & CONTROLS - (Version JPG)

PS81 - Ultra-Long Life Vacuum Switches

► 1.5" to 15" Hg (51 to 508 mbar)

► Sensitive Diaphragm for Lower Set Points

► Factory Fixed or Adjustable Set Points

For low vacuum applications, the longevity of our PS81 Series is hard to beat. A life expectancy of 1 million cycles means long-term reliability. Their brass housing and choice of four diaphragm materials ensures chemical compatibility with your system. PS81 series switches have a field adjustable set point or can be factory set.

Specifications


	Switch*	5A @ 125/250 VAC,
		3 Amp inductive @ 24 VDC (Std)
	Repeatability	See Table 1
	Wetted Parts
	Diaphragm and O-Ring	Nitrile standard (optional EPDM, Viton® or Kapton® with o-ring)
	Fitting	Brass
	Housing	Brass
	Spring	300 Series SS
	Spring Guide	Delrin®
	Electrical Termination**	DIN 43650A IP00; Terminals IP00; Flying Leads IP00;
		IP option IP00
	Proof Pressure	0 psia to 150 psig (-1 bar to 10.3 bar)
	Burst Pressure	500 psi (34.5 bar)
	Approvals	CE, UL Approved units available
	Weight, Approximate	0.31 lbs. (0.14 kg)

Dimensions

SPDT Shown

RED = N.O. GREEN = N.C. BLACK = COMMON

* Gold contacts (option G) may be required for less than 12 VDC and 20 mA. ** Plastic housing is vented to atmosphere. Consult factory for sealed versions.

Recommended Operating Temperature Limits


	Diaphragm Material	Range
	Nitrile	15°F to 250°F (-9°C to +121°C)
	Viton®	0°F to 250°F (-18°C to +121°C)
	EPDM	-40°F to +250°F (-40°C to +121°C)
	Kapton®	-40°F to +250°F (-40°C to +121°C)

Note: Switches may function below the cold temperature limit but the set points and deadband will increase. Consult factory for details.

DIN 43650A with Cable Clar

DIN 43650A Male Half Only

32.

Pressure Switch - GEMS SENSORS & CONTROLS - #16

Zener barrier, Liquid level switch, Flow switch, Proximity switch, Wireless level sensor