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This pressure switch trips across a 1000 to 3200 psi (68.95 to 220.63 bar) set range on a 5 A SPDT contact with a 100 to 500 psi (6.89 to 34.47 bar) deadband. It connects through a 1/4" NPT Female port in a sealed industrial body. It suits high-vibration machinery and equipment control and rack-mounted industrial control panels.
This pressure switch trips across a 1000 to 3200 psi (68.95 to 220.63 bar) set range on a 5 A SPDT contact with a 100 to 500 psi (6.89 to 34.47 bar) deadband. It connects through a 1/4" NPT Female port in a sealed industrial body. It suits high-vibration machinery and equipment control and rack-mounted industrial control panels.
OMEGA's PSW12 offers reliability, repeatability, and durability in a compact design. This switch is rack mountable and has an accessible adjustment when installed. Snap-action Belleville spring design contributes to a long, stable life and to vibration resistance.
An optional mounting bracket provides easy retrofit, and an optional cover lock adds security. Ranges are from 8 to 6000 psi (0.6 to 414 bar).
Features
Applications
| Series | PSW12 Series |
| Type | pressure switch |
| Pressure type | Gauge |
| Switch | (1) 5 A SPDT |
| Set point range | 1000 to 3200 psi (68.95 to 220.63 bar) |
| Deadband | 100 to 500 psi (6.89 to 34.47 bar) |
| Adjustability | Fixed |
| Pressure connection | 1/4" (6.3 mm) NPT Female |
| Approval | UL listed, cUL certified; Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; Class III |
| Setpoint Repeatability | ±1% of adjustable range |
| Switch Output | 1 or 2 SPDT, factory-sealed lead wires; mechanical contact life: 10 million cycles |
| Electrical Ratings | 5 A @ 250 V AC, 5 A resistive and 3 A inductive @ 28 V DC; silver contacts |
| Enclosure | 300 stainless steel; NEMA 4X, 7, 9 and IP66 |
| Electrical Connection | 1/2" (12.7 mm) MNPT with 72" (1.8 m) lead wires |
| Pressure Connection | 1/4" (6.4 mm) FNPT |
| Storage Temperature | -58 to 176°F (-50 to 80°C) |
| Process Temperature, Stainless Steel Diaphragm | 0 to 320°F (-17 to 160°C) |
| Process Temperature, Polyimide Diaphragm | -18 to 199°F (-28 to 93°C) |
| Ambient Temperature | -58 to 176°F (-50 to 80°C); setpoint typically shifts less than 1% of range for a 82°F (28°C) ambient temperature change |
| Shock | Setpoint repeats after 75 g, 10 ms duration |
| Vibration | Setpoint repeats after 15 g, 10 to 2000 Hz |
| Adjustable Range | 8 to 6000 psi (0.6 to 414 bar) |
| Sensing Element | Snap-action Belleville spring design (compact stainless steel Belleville assembly) for long life, vibration resistance, and stability |
| Diaphragm / O-Ring | Varies by model: PFA-coated polyimide diaphragm with Buna-N O-ring (PSW12T), or 316 SS diaphragm with FKM O-ring (PSW12 V); 1/8" (3.2 mm) orifice |
| Mounting | Optional mounting bracket for retrofit applications; strain relief; rack mountable with accessible adjustment when installed |
| Dimensions | 1.25" (31.8 mm) diameter x 2.88" (72.9 mm) (per drawing) |
| Weight | Approximately 12 oz (0.34 kg) |
| Series | PSW12 Series |
| Type | pressure switch |
| Pressure type | Gauge |
| Switch | (1) 5 A SPDT |
| Set point range | 1000 to 3200 psi (68.95 to 220.63 bar) |
| Deadband | 100 to 500 psi (6.89 to 34.47 bar) |
| Adjustability | Fixed |
| Pressure connection | 1/4" (6.3 mm) NPT Female |
| Approval | UL listed, cUL certified; Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; Class III |
| Setpoint Repeatability | ±1% of adjustable range |
| Switch Output | 1 or 2 SPDT, factory-sealed lead wires; mechanical contact life: 10 million cycles |
| Electrical Ratings | 5 A @ 250 V AC, 5 A resistive and 3 A inductive @ 28 V DC; silver contacts |
| Enclosure | 300 stainless steel; NEMA 4X, 7, 9 and IP66 |
| Electrical Connection | 1/2" (12.7 mm) MNPT with 72" (1.8 m) lead wires |
| Pressure Connection | 1/4" (6.4 mm) FNPT |
| Storage Temperature | -58 to 176°F (-50 to 80°C) |
| Process Temperature, Stainless Steel Diaphragm | 0 to 320°F (-17 to 160°C) |
| Process Temperature, Polyimide Diaphragm | -18 to 199°F (-28 to 93°C) |
| Ambient Temperature | -58 to 176°F (-50 to 80°C); setpoint typically shifts less than 1% of range for a 82°F (28°C) ambient temperature change |
| Shock | Setpoint repeats after 75 g, 10 ms duration |
| Vibration | Setpoint repeats after 15 g, 10 to 2000 Hz |
| Adjustable Range | 8 to 6000 psi (0.6 to 414 bar) |
| Sensing Element | Snap-action Belleville spring design (compact stainless steel Belleville assembly) for long life, vibration resistance, and stability |
| Diaphragm / O-Ring | Varies by model: PFA-coated polyimide diaphragm with Buna-N O-ring (PSW12T), or 316 SS diaphragm with FKM O-ring (PSW12 V); 1/8" (3.2 mm) orifice |
| Mounting | Optional mounting bracket for retrofit applications; strain relief; rack mountable with accessible adjustment when installed |
| Dimensions | 1.25" (31.8 mm) diameter x 2.88" (72.9 mm) (per drawing) |
| Weight | Approximately 12 oz (0.34 kg) |
