Miniature Pressure and Vacuum Switches
$115.46
Item# PSW-521
This item is available for quick shipping
| Quantity | Price each |
|---|---|
| 1-9 | $115.46 |
| 10-24 | $109.69 |
| 25-49 | $107.38 |
| 50-99 | $102.76 |
| 100-199 | $100.45 |
| 200+ | $98.14 |
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- External Pressure Scale and Pointer for Easy Setpoint Adjustments
- 5 Amp Model Switches With High Proof Pressures
- 1 Amp Gold-Plated Switches for TTL and Dry Contact Closures
- Wetted Parts: Stainless Steel, Sealing Compound and or O-ring
- Control Optional Audible Alarms or Relay Modules
Product info
Product Specs
- Accuracy Piston (PSW-520 and PSW-540 diaphragm)
- Maximum Rating 1
- Pressure Type Gauge
- Pressure Units PSIG
- repeatability +/-0.6 to +/-10psig
Capable of sensing very low positive or negative pressures, reliability and long life are inherent advantages of this design. Extremely easy set point adjustment: 1) Loosen the lock ring, 2) Turn interface either left or right until pointer is at the desire pressure or vacuum on range label, 3) Retighten the lock ring, and 4) Verify the adjustment by applying pressure or vacuum. See Switch Accessories at omega.com for Audible Alarms and Relay Modules.
PRESSURE
MODELSADJUSTABLE RANGE (psig) DEADBAND
(psig)REPEATABILITY
(psi)MAX SYSTEM
PRESSURE (psi)SWITCH DECREASING INCREASING PSW-521 0.8 to 28.5 1.6 to 30 0.8 to 1.3 ±0.6 30 1 A PSW-522 2.0 to 38.3 3.0 to 40 1.0 to 1.7 ±1.0 50 1 A PSW-523 3.0 to 96.5 4.5 to 100 1.5 to 3.5 ±2.0 100 1 A PSW-524 7.5 to 242.5 9.7 to 250 2.2 to 9.0 ±5.0 250 1 A PSW-525 15 to 458 20 to 500 5.0 to 21 ±10 500 1 A PSW-531 0.8 to 16.3 1.2 to 20 0.6 to 3.7 ±0.8 3,000 5 A PSW-532 2.0 to 42.5 2.0 to 50 0.8 to 7.5 ±2.0 3,000 5 A PSW-533 4.0 to 91 4.0 to 100 1.1 to 9.0 ±4.0 5,000 5 A PSW-534 10 to 222 10 to 250 2.2 to 28 ±10 5,000 5 A PSW-535 20 to 432 20 to 500 3.5 to 68 ±20 5,000 5 A PSW-536 50 to 700 100 to 800 20 to 100 ±40 5,000 5 A VACUUM
MODELSADJUSTABLE RANGE (inHg) DEADBAND
(inHg)REPEATABILITY
(inHg)MAX SYSTEM
PRESSURE (inHg/psi)SWITCH DECREASING INCREASING PSW-541 1.6 to 27.0 2.7 to 28.2 1.3 to 2.7 ±1.2 29.9/0 1 A PSW-542 4.0 to 24.8 5.1 to 28.2 1.5 to 3.2 ±2.0 29.9/0 1 A PSW-543 6.0 to 21.5 8.4 to 28.2 2.0 to 7.3 ±4.0 29.9/0 1 A PSW-551 1.2 to 22.5 1.6 to 28.2 1.1 to 5.7 ±1.6 29.9/3000 5 A PSW-552 1.2 to 21.8 8.0 to 28.2 8.0 to 6.4 ±8.0 29.9/5000 5 A
PSW-560 (1-AMP) AND PSW-570 (5-AMP) SERIES PERFORMANCE TABLE
MODEL NOMINAL
SETPOINT
(PSI)DEAD
BAND
1 AMP/5AMPREPEATABILITY
(±PSI)PSW-561
PSW-571500
1000
1500
2000
250070/120
80/130
90/145
100/160
110/18025
50
75
100
125PSW-562
PSW-572600
1000
1500
2000
2500
3000
3500
4000
5000113/186
145/220
190/262
235/305
280/345
325/385
364/430
410/470
410/47045
60
85
100
125
150
175
200
250PSW-563
PSW-573700
1000
1500
2000
3000
4000
5000
6000177/455
210/620
247/730
300/820
315/980
340/1000
355/1110
375/128065
75
85
100
150
200
250
300
1 AMP
MODEL5 AMP
MODELADJUSTABLE RANGE (psig) MAX. SYSTEM
PRESSURE (psig)PROOF
PRESSURE (psig)DECREASING INCREASING PSW-561 PSW-571 500 to 2390 500 to 2500 3000 4500 PSW-562 PSW-572 600 to 4500 600 to 5000 5000 7500 PSW-563 PSW-573 700 to 5500 700 to 6000 6000 9000
SWITCH RATING
MAX. RATING AC/DC VOLTS
RESISTIVEAMPS AMPS
INDUCTIVE CONTACTS1 AMP SPDT 115/28 1/1 1/0.5 Gold** 5 AMP SPDT 250/28 5/5 5/3 Silver
SPECIFICATIONS
Approvals: UL (1 Amp switches PSW-520 and PSW-540 Series only)
Process Temp: -55 to 105°C (-65 to 221°F) (2% setpoint shift can occur below -25°C [-13°F] or above 50°C [122°F])
Cycling: Not to exceed 20 cycles/min.
Warranty: 3 year/1 million cycles
Sensor: Piston (PSW-520 and PSW-540 diaphragm)
Proof Pressure: 150% max. system pressure (PSW-530 and PSW-550 proof pressure is the max. system pressure)
Wetted Parts:
PSW-520 and PSW-540 Series: 17-7 pH SS, 303 SS and loctite sealing compound #271
PSW-530 and PSW-550 Series: 303 SS, 316 SS, Buna-N O-ring, loctite #271
PSW-560 and PSW-570 Series: 17-7 PH SS, 303SS, Buna-N O-ring, and loctite #271
Enclosure:
Body: 303 SS
Internal Switch Housing and Lock Ring: zinc alloy with chromate finish
Cap: black valox
Dimensions:
PSW-520 and PSW-540: 66 L x 28 dia. mm (2.6 L x 1.06' dia.)
PSW-560 and PSW-570: 71 L x 28 mm dia. (2.8 L x 1.10' dia.)
Pressure Port: 1/8 -27 NPT
Electrical Connection: 20 AWG, three polyvinyl insulated, unjacketed, 300 mm (12') pigtail leads
Wiring Code: Black is common, white is N.O., red is NC (Vacuum models: red is NO, white is NC)
Weight: 113 g (4 oz); PSW-520 and PSW-540 series, 85 g (3 oz)
Caution: Pressure switches are manufactured to the highest quality specifications. However, due to their economical construction, they should be used only for applications where, in the event of product failure, the risk of damage to equipment or personnel is minimal
