GENERAL PURPOSE PRESSURE SWITCHES
IN NEMA 4X (IP66) ENCLOSURES
PSW-100 Series
Vacuum to 3000 psi
Starts at
$
140
⻬ Ranges from 0.5 inH
to 3000 psi
⻬ SPDT or DPDT Switches
⻬ Adjustment Lock
⻬ Safe, Easy Wiring Access
OMEGA’s affordable, general
purpose pressure switches offer
distinct advantages over most
similar-style switches, including
DPDT or adjustable deadband
switches, as well as a wide
selection of adjustable ranges from
0.5 inH2O to 3000 psi.
SPECIFICATIONS
Approval: UL listed, CSA certified
Storage Temperature: -55 to 70°C
(-67 to 158°F)
Process Temperature:
Stainless Steel:
-55 to 205°C (-67 to 401°F)
Phosphor Bronze:
-40 to 150°C (-40 to 302°F)
Buna-N: -25 to 95°C (-13 to 203°F)
Ambient Temperature: -40 to 70°C
(-40 to 158°F), except models PSW-107
to PSW-117 and PSW-134 to PSW-139:
-20 to 70°C (-4 to 158°F);
setpoint typically shifts less than 1% of
range for a 30°C (54°F) ambient
temperature change
Shock: Setpoint repeats after 15 g,
10 ms duration
Vibration: Setpoint repeats after 2.5 g,
5 to 500 H
Setpoint Repeatability: All models
±1% of adjustable range, except models
PSW-118 to PSW-125 and PSW-132 to
PSW-133, which are ±1.5%
Switch Output: One SPDT or DPDT
switch can be wired “normally open”
or “normally closed”
Electrical Rating: Standard 15 A
125/250/480 Vac resistive
External Manual Reset: 15 A
125/250 Vac resistive
z
O
2
Double Pole
Double Throw:
10 A 125/250 Vac
resistive
Enclosure: Die-cast
aluminum (max 0.6%
copper); epoxy-coated
blue enclosure,
gasketed, complies
with NEMA 4X (IP66)
Weight: Approximately
0.9 kg (2 lb)
Electrical Connection:
1
⁄2 NPT and two 7⁄8"
diameter knockouts
Pressure Connection:
See “To Order” on next page
Dimensions:
191 max H x 101 W x 60 mm D
(7.5 x 4 x 2.3")
Gasketed
Cover
PSW-114, $140,
shown smaller
than actual size.
Long-Life
Switch
VibrationResistant
Setpoint
and Scale
Rugged NEMA 4X
(IP66) Enclosure
H-25
GENERAL PURPOSE PRESSURE SWITCHES
MOST POPULAR MODELS HIGHLIGHTED!
To Order (Specify Model Number)
ADJUSTABLE RANGE DEADBAND PROOF ADDED
MODEL NO.
BUNA-N DIAPHRAGM, O-RING AND
PSW-107 $140 1.5 to 30 psi 0.1 to 2 bar 1 to 2 psi 600 psi 15 A SPDT —
PSW-108 140 3 to 100 psi 0.2 to 6.9 bar 1 to 4 psi 600 psi 15 A SPDT —
PSW-109 175 3 to 100 psi 0.2 to 6.9 bar — 600 psi 15 A SPDT
PSW-110 225 3 to 100 psi 0.2 to 6.9 bar 11.3 Typ. 600 psi 10 A DPDT
PSW-111 170 3 to 100 psi 0.2 to 6.9 bar 3 to 7 psi 600 psi 15 A SPDT
PSW-112 140 9 to 300 psi 0.7 to 20.7 bar 1 to 5 psi 600 psi 15 A SPDT —
PSW-113 170 9 to 300 psi 0.7 to 20.7 bar 4 to 11 psi 600 psi 15 A SPDT
PSW-114 140 15 to 500 psi 1 to 34.5 bar 2 to 8 psi 2500 psi 15 A SPDT —
PSW-115 170 15 to 500 psi 1 to 34.5 bar 5 to 12 psi 2500 psi 15 A SPDT
PSW-116 175 15 to 500 psi 1 to 34.5 bar — 2500 psi 15 A SPDT
PSW-117 140 30 to 1000 psi 2 to 69 bar 3 to 20 psi 2500 psi 15 A SPDT —
BUNA-N DIAPHRAGM, O-RING AND
PSW-134 $335
PSW-135 335
PSW-136 335
PSW-137 335 0.5 to 5 inWC
PSW-138 335 2.5 to 50 inWC
PSW-139 335 10 to 250 inWC
316 SS DIAPHRAGM AND
PSW-104 $300 1 to 20 psi 70 mbar to 1.4 bar 0.1 to 1 psi 500 psi 15 A SPDT —
PSW-105 300 2 to 50 psi 140 mbar to 3.4 bar 0.1 to 1.5 psi 500 psi 15 A SPDT —
PSW-118 170 5 to 30 psi 0.4 to 2 bar 1 to 3 psi 2500 psi 15 A SPDT —
PSW-120 170 10 to 100 psi 0.7 to 6.9 bar 1 to 8 psi 2500 psi 15 A SPDT —
PSW-121 170 15 to 300 psi 1 to 20.7 bar 3 to 18. psi 2500 psi 15 A SPDT —
PSW-123 200
PSW-124 170 20 to 500 psi 1.4 to 34.5 bar 4 to 30 psi 2500 psi 15 A SPDT —
PSW-125 170 80 to 1700 psi 5.5 to 117 bar 5 to 120 psi 2500 psi 15 A SPDT —
PHOSPHOR BRONZE BELLOWS AND
PSW-127 $160
PSW-128 245
PSW-129 160 4 to 200 psi 0.3 to 13.7 bar 1 to 4 psi 250 psi 15 A SPDT —
316 SS BELLOWS AND
PSW-130 $230 15 to 200 psi 1 to 13.7 bar 1 to 3 psi 250 psi 15 A SPDT —
PSW-131 230 25 to 500 psi 1.8 to 34.5 bar 1.5 to 5 psi 575 psi 15 A SPDT —
PSW-132 290 100 to 1700 psi 6.9 to 11.7 bar 9 to 40 psi 2500 psi 15 A SPDT —
303 SS PISTON, BUNA N O-RING AND
PSW-133 $200 125 to 3000 psi 8.6 to 206 bar 40 to 250 psi 10000 psi 15 A SPDT —
Note: The use of metallic diaphragms where higher pressures, shock or heavy cycling is expected should be avoided. When choosing a
*
pressure range, it is recommended that the switch operate in the middle 80% of its adjustable range. Switching may not be accurate in the lower
and upper 10% of the range.
Switches come complete with operator’s manual.
Oxygen Clean Option: Available on -SS models only; add suffix “-X6B” to model number, and add $85 to price.
Ordering Example: PSW-115, Buna-N diaphragm,
PRICE
STANDARD METRIC
300 inWC vac to 0 inWC
10 inWC vac to 10 inWC
50 inWC vac to 50 inWC
1
⁄
FNPT NICKEL-PLATED BRASS PRESSURE CONNECTION
4
1
⁄
FNPT ALUMINUM PRESSURE CONNECTION
2
747.24 to 0 mbar 0.2 to 8 inWC 400 psi 15 A SPDT —
-24.91 to 24.91 mbar
-124.54 to 124.54 mbar 0
1.25 to 12.45 mbar
6.23 to 124.54 mbar
1
⁄
FNPT PRESSURE CONNECTION*
2
24.91 to 622.70 mbar
STANDARD UNITS
0.1 to 0.6 inWC 400 psi 15 A SPDT —
.1 to 3.0 inWC 400 psi 15 A SPDT —
0.1 to 0.3 inWC 400 psi 15 A SPDT —
0.1 to 0.8 inWC 400 psi 15 A SPDT —
0.1 to 6.0 inWC 400 psi 15 A SPDT —
15 to 300 psi 1 to 20.7 bar 3 to 18 psi
1
⁄
FNPT BRASS PRESSURE CONNECTION
4
30 inHg vac to 0
30 inHg vac to 0
1
⁄
FNPT PRESSURE CONNECTION
4
-1 to 0 bar 1 to 2 inHg 0 psi 15 A SPDT —
-1 to 0 bar 3 to 6.5 inHg 0 psi 10 A DPDT
1
⁄
FNPT SS PRESSURE CONNECTION
4
1
brass FNPT thread, range of 50 to 500 psi and adjustable deadband, $170.
⁄
4
PRESSURE SWITCH FEATURE
External
Manual
Reset
DPDT Switch
Adjustable
Deadband
Adjustable
Deadband
Adjustable
Deadband
External
Manual
Reset
2500 psi 15 A SPDT
Adjustable
Deadband
DPDT Switch
PRESSURE SWITCHES
H
Recommended Reference Book:
Total Quality Management,
H-26
GE-0658, $50. See Section Y For Additional Books.
One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | info@omega.com
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