H-30

H

PSW-241, psi range,

shown smaller

than actual size.

Comes complete with operator’s manual.

Important Note Regarding DPDT Switches: DPDT switches are manufactured so that contact transfer of both switches occurs at the same

time for rising pressure setpoints. For falling pressure setpoints, a small amount of non-simultaneity in the switch outputs may be observed.

Note: Deadbands are fixed and non-adjustable and tend to increase linearly with increased setpoint.

Ordering Example: PSW-241, pressure switch 5 to 30 psi, stainless steel diaphragm, 3 to 8 psi deadband.

See switch

accessories online

for audible alarms

and relay modules.

PRESSURE SWITCHES

To Order

MODEL NO.

ADJUSTABLE RANGE

DEADBAND

PROOF

PRESSURE SWITCH

ADDED

FEATURE

STANDARD

METRIC

0 TO 75% RANGE

100%

RANGE

BUNA-N DIAPHRAGM, O-RING, 1⁄4 FNPT 304 SS PRESSURE CONNECTION

PSW-231

1 to 20 psi

0.07 to 1.38 bar

0.1 to 3 psi

–

500 psi

11 A SPDT

–

PSW-231D

1 to 20 psi

0.07 to 1.38 bar

3.8 psi typ.

–

500 psi

11 A DPDT DPDT

SWITCH

PSW-232

2 to 50 psi

0.14 to 3.45 bar

0.1 to 5 psi

–

500 psi

11 A SPDT

–

PSW-232D

2 to 50 psi

0.14 to 3.45 bar

5.3 psi typ.

–

500 psi

11 A DPDT DPDT

SWITCH

PSW-241

5 to 30 psi

0.34 to 2.07 bar

3 to 8 psi

10 psi

2500 psi

11 A SPDT

–

PSW-241D

5 to 30 psi

0.34 to 2.07 bar

9.8 psi typ.

–

2500 psI

11 A DPDT DPDT

SWITCH

PSW-242

10 to 100 psi

0.69 to 6.90 bar

3 to 30 psi

45 psi

2500 psi

11 A SPDT

–

PSW-242D

10 to 100 psi

0.69 to 6.90 bar

41.3 psi typ.

–

2500 psi

11 A DPDT

DPDT

SWITCH

PSW-243

15 to 300 psi

1.03 to 20.69 bar

10 to 40 psi

60 psi

2500 psi

11 A SPDT

–

PSW-243D

15 to 300 psi

1.03 to 20.69 bar

52.5 psi typ.

–

2500 psi

11 A DPDT DPDT

SWITCH

PSW-244

20 to 500 psi

1.38 to 34.98 bar

15 to 45 psi

75 psi

2500 psi

11 A SPDT

–

PSW-244D

20 to 500 psi

1.38 to 34.98 bar

67.5 psi typ.

–

2500 psi

11 A DPDT DPDT

SWITCH

PSW-245D

80 to 1700 psi

5.50 to 117 bar

168.8 psi typ.

–

2500 psi

11 A DPDT DPDT

SWITCH

BUNA-N DIAPHRAGM, O-RING WITH 1⁄2 FNPT ALUMINUM PRESSURE CONNECTION

PSW-221

300 vac to 0 inH2O

-747.24 to 0 mbar

0.8 to 32 inH2O

–

100 psi

11 A SPDT

–

PSW-221D

300 vac to 0 inH2O

-747.24 to 0 mbar

36 inH2O typ.

–

100 psi

11 A DPDT DPDT

SWITCH

PSW-222

10 vac to 10 inH2O

-24.94 to 24.94 mbar

0.4 to 2.4 inH2O

–

100 psi

11 A SPDT

–

PSW-222D

10 vac to 10 inH2O

-24.94 to 24.94 mbar

2.7 inH2O typ.

–

100 psi

11 A DPDT DPDT

SWITCH

PSW-223

50 vac to 50 inH2O -124.54 to 124.54 mbar

0.4 to 12 inH2O

–

100 psi

11 A SPDT

–

PSW-223D

50 vac to 50 inH2O -124.54 to 124.54 mbar

13.5 inH2O typ.

–

100 psi

11 A DPDT DPDT

SWITCH

PSW-224

0.5 to 5 inH2O

1.25 to 12.45 mbar

0.4 to 1.2 inH2O

–

100 psi

11 A SPDT

–

PSW-225

2.5 to 50 inH2O

6.23 to 124.154 mbar

0.4 to 3.2 inH2O

–

100 psi

11 A SPDT

–

PSW-225D

2.5 to 50 inH2O

6.23 to 124.154 mbar

3.6 inH2O typ.

–

100 psi

11 A DPDT DPDT

SWITCH

PSW-226

10 to 250 inH2O

24.91 to 622.70 mbar

0.4 to 24 inH2O

–

100 psi

11 A SPDT

–

PSW-226D

10 to 250 inH2O

24.91 to 622.70 mbar

27 inH2O typ.

–

100 psi

11 A DPDT DPDT