Omega PSW20 User Manual

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PSW20 Series
Pressure, vacuum or differential pressure switches
M4067-0504
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Installation Instructions for OMEGA PSW20 Series: Pressure, Vacuum and Differential
Pressure Switches.
General
The PSW20 series is single pole switch that can be used as a pressure or vacuum switch (from 0.40 in W. C. to
20 inches W. C.) or as a pressure differential switch. The switch can respond to rapid pulsing and the gold
plated silver contacts will handle low level switching currents.
Mounting Instructions
Switch may be mounted in horizontal or vertical position, through 0.12" (3mm) holes on 1.34" (34mm)
centerline, with suitable clearances to accommodate 0.15" I.D tubing and electrical connectors – see diagram
for dimensions.
Electrical, Pneumatic and Material/Mechanical Specification
Part
Number
Pressure range
(inches water, gauge)
Pressure Vacuum Differential
PSW20A 0.4-15 0.4-15 .04-15
PSW20B 1-20 1-20 1-20
INSTRUCTION
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