Omega PSW-200 Specification

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INDUSTRIAL PRESSURE SWITCHES

FOR HARSH ENVIRONMENTS

Vacuum to 1700 psi

PSW-200 Series

U Rugged, One-Piece,

Epoxy-Coated Aluminum Body

Meets NEMA 4X (IP66)

Classification

U UL Listed U Stainless Steel

Nameplate

U Internal Reference Scale

with Adjustment Lock

U Hermetically Sealed

SPDT or DPDT Switch

SPECIFICATIONS

Approvals: UL listed Storage Temperature:

-54 to 71°C (-65 to 160°F)

Ambient Temperature Limits:

-40 to 71°C (-40 to 160°F), except models PSW-234 to PSW-240 and PSW-221 to PSW-226: -18 to 71°C (0 to 160°F); setpoint typically shifts less than 1% of range for a 28°C (50°F) ambient temperature change

Process Temperature:

Stainless Steel: -57 to 204°C

(-70 to 400°F) Phosphor Bronze: -40 to 149°C (-40 to 300°F)

Buna-N: -23 to 93°C (-10 to 200°F)

Shock: Setpoint repeats after 15 g,

10 ms duration Vibration: Setpoint repeats after

2.5 g, 5 to 500 Hz Enclosure Classification:

Complies with NEMA 4X (IP66) Setpoint Repeatability: 1% of

adjustable range, except models PSW-241 to PSW-245D: 1.5%

Switch Output: Hermetically sealed SPDT or DPDT switch can be wired “normally open” or “normally closed”

Electrical Output: 11 A, 125/250 Vac resistive

Enclosure: Die-cast aluminum, epoxy coated, gasketed

Weight: 0.7 to 2.7 kg (1.5 to 6 lb) (varies by model)

Electrical Connection: and (2) 22 mm (7⁄8") diameter knockouts

⁄2 NPT

PSW-236,

shown smaller

than actual size.

Pressure Connection:

or 1⁄4 FNPT as noted in “To Order” chart

Dimensions:

psi Ranges:

214 max H x 101 W x 60 mm D (8.4 max x 4 x 2.3") inH2O Ranges: W and D = 152 mm (6")

⁄2 FNPT,

To Order

ADJUSTABLE RANGE

MODEL NO.

BUNA-N DIAPHRAGM, O-RING,

PSW-234

PSW-234D

PSW-236

PSW-236D

PSW-238

PSW-238D

PSW-240

PSW-240D

PHOSPHOR-BRONZE BELLOWS,

PSW-246D

STANDARD METRIC

3 to 20 psi 0.21 to 1.38 bar 1 to 4 psi 1000 psi

3 to 20 psi 0.21 to 1.38 bar 3.8 psi typ. 1000 psi

3 to 100 psi 0.21 to 6.90 bar 2 to 12 psi 1000 psi

3 to 100 psi 0.21 to 6.90 bar 11.3 psi typ. 1000 psi

15 to 500 psi 1.03 to 34.48 bar 15 to 60 psi 2500 psi

15 to 500 psi 1.03 to 34.48 bar 26.3 psi typ. 2500 psi

100 to 1700 psi

30 inHg vac to 0

DEADBAND FIXED

0 TO 100 % RANGE

⁄4 FNPT 304 SS PRESSURE CONNECTION

6.90 to 117 bar 20 to 110 psi 2500 psi

6.90 to 117 bar 93.8 psi typ. 2500 psi

⁄4 FNPT NICKEL-PLATED BRASS PRESSURE CONNECTION

-1 to 0 bar 11.3 inHg vac typ. 30 psi

PROOF

PRESSURE

H-29

SWITCH

11 A SPDT

11 A DPDT

11 A SPDT

11 A DPDT

11 A SPDT

11 A DPDT

11 A SPDT

11 A DPDT

ADDED FEATURE

–

DPDT SWITCH

–

DPDT SWITCH

–

DPDT SWITCH

–

DPDT SWITCH

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PRESSURE SWITCHES

PSW-241, psi range, shown smaller than actual size.

See switch

accessories online

for audible alarms

and relay modules.

To Order

ADJUSTABLE RANGE

MODEL NO.

BUNA-N DIAPHRAGM, O-RING,

PSW-231

PSW-231D

PSW-232 PSW-232D

PSW-241 PSW-241D

PSW-242 PSW-242D

PSW-243 PSW-243D

PSW-244 PSW-244D

PSW-245D

BUNA-N DIAPHRAGM, O-RING WITH

PSW-221 PSW-221D

PSW-222 PSW-222D

PSW-223 PSW-223D

PSW-224 PSW-225 PSW-225D

PSW-226 PSW-226D

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.

STANDARD METRIC

⁄4 FNPT 304 SS PRESSURE CONNECTION

1 to 20 psi 0.07 to 1.38 bar 0.1 to 3 psi – 500 psi

1 to 20 psi 0.07 to 1.38 bar 3.8 psi typ. – 500 psi

2 to 50 psi 2 to 50 psi

5 to 30 psi 0.34 to 2.07 bar 3 to 8 psi 10 psi 2500 psi 5 to 30 psi 0.34 to 2.07 bar 9.8 psi typ. – 2500 psI

10 to 100 psi 0.69 to 6.90 bar 3 to 30 psi 45 psi 2500 psi 10 to 100 psi 0.69 to 6.90 bar 41.3 psi typ. – 2500 psi

15 to 300 psi 1.03 to 20.69 bar 10 to 40 psi 60 psi 2500 psi 15 to 300 psi 1.03 to 20.69 bar 52.5 psi typ. – 2500 psi

20 to 500 psi 1.38 to 34.98 bar 15 to 45 psi 75 psi 2500 psi 20 to 500 psi 1.38 to 34.98 bar 67.5 psi typ. – 2500 psi

80 to 1700 psi

300 vac to 0 inH2O 300 vac to 0 inH2O

10 vac to 10 inH2O -24.94 to 24.94 mbar 10 vac to 10 inH2O -24.94 to 24.94 mbar

50 vac to 50 inH2O -124.54 to 124.54 mbar 50 vac to 50 inH2O -124.54 to 124.54 mbar

0.5 to 5 inH2O

2.5 to 50 inH2O 6.23 to 124.154 mbar

10 to 250 inH2O 24.91 to 622.70 mbar 10 to 250 inH2O 24.91 to 622.70 mbar

0.14 to 3.45 bar

5.50 to 117 bar 168.8 psi typ. – 2500 psi

⁄

FNPT ALUMINUM PRESSURE CONNECTION

-747.24 to 0 mbar

1.25 to 12.45 mbar

0 TO 75% RANGE 100%

DEADBAND

RANGE

0.1 to 5 psi – 500 psi

5.3 psi typ. – 500 psi

0.8 to 32 inH2O – 100 psi 36 inH2O typ. – 100 psi

0.4 to 2.4 inH2O – 100 psi

2.7 inH2O typ. – 100 psi

0.4 to 12 inH2O – 100 psi

13.5 inH2O typ. – 100 psi

0.4 to 1.2 inH2O – 100 psi

0.4 to 3.2 inH2O – 100 psi

3.6 inH2O typ. – 100 psi

0.4 to 24 inH2O – 100 psi 27 inH2O typ. – 100 psi

PROOF PRESSURE

H-30

SWITCH

11 A SPDT

11 A DPDT

11 A SPDT 11 A DPDT

11 A SPDT – 11 A DPDT

11 A SPDT 11 A DPDT

11 A DPDT

11 A SPDT 11 A DPDT

11 A SPDT 11 A SPDT 11 A DPDT

11 A SPDT 11 A DPDT

ADDED FEATURE

–

DPDT SWITCH

– DPDT

SWITCH – DPDT

SWITCH

DPDT SWITCH

– DPDT

SWITCH DPDT

SWITCH

– DPDT

SWITCH – DPDT

SWITCH – – DPDT

SWITCH – DPDT

PRESSURE SWITCHES