Omega Engineering PSW 18 P manual Features, Specifications, Materials of Construction

P N E U M A T I C , D I A P H R A G M - S T Y L E P R E S S U R E S W I T C H

PSW18P Series

APPLICATION

Ideal for Control of Air

FEATURES

Rugged Compact Design

Convenient Setpoint Adjustments

High Cycle Life

Vibration Resistant to 15g

UL and CSA Approved Microswitch

Gold Plated Contacts

SPECIFICATIONS

Ports/Mounting Plate	1/4" NPT
Adjustment Range	See table
Proof Pressure*	1150 PSI (80 bar)
Temperature Rating
Ambient	14° to 175° F (-10° to 80° C)
Media	-4° to 175° F (-20° to 80° C)
Switching Element	SPDT Microswitch
Max. Switching Rate	100 cycles/minute
Repeatability	±3%; for vacuum ±4%
Electrical Connector	DIN 43650 Table A with Removable
	Cable Plug Adapter

2 3

p

1

Terminals 1 - 2: Contacts open on rising pressure.

Terminals 1 - 3: Contacts close on rising pressure.

*Note: Do not subject switch to proof pressure during normal operation. Even short pressure peeks must not exceed proof pressure.

MATERIALS OF CONSTRUCTION

Housing	Aluminum
Seal
A & B	Fluorocarbon / Buna-N
C, D, E	Buna-N
PART NUMBER IDENTIFICATION			.59 (15)
PART NUMBER	PRESSURE RANGE	HYSTERESIS*

1.18(30)

.79 (20)

.21 (5.3)	2.83 (72)
	(15.5)
.61*

Switch Adjustment

2.95(75)

1.18(30)

1/4 NPT

		PSI	PSI
			Lower Range	Upper Range
PSW18PA	-14 – 0		2	3
PSW18PB		3 – 29	2	4
PSW18PC	7	– 120	4	9
PSW18PD	15	– 230	4	13
PSW18PE	15	– 435	15	73

All dimensions in inches (mm)

*Note: Hysteresis is not adjustable. Maximum values are shown.