OMEGA

PSW-681 OEM Mechanical Pressure Switch for Low Pressure & Vacuum

-134 to 395 inH2O, fixed deadband

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PSW 681 OEM Mechanical Pressure Switch for Low Pressure Vacuum 13719
• Compound Range Covers Vacuum and Pressure in One Unit
• Low Inch of Water Ranges
• Silver Switch Contacts Rated for 5 Amps @ 250 Vac
• 1 Amp, Gold-Plated Contacts for TTL or Dry Contacts
Process Temp-55 to 90°C (-67 to 194°F) A setpoint change of up to 2% of sensor capacity may be anticipated when switch is used either below -25°C (-13°F) or above 50°C (122°F)
Repeatabiltiy±0.8 inH2O
CyclingNot to exceed 20 CPM
Warranty3 year/1 million cycles
Proof Pressure/Vacuum±553.6 inH2O (±20 psi)
Wetted PartsBuna-N, 316 Stainless Steel, zinc alloy with chromate finish, Loctite #271 sealing compound
Dimensions58.4 D x 57.2 mm H (2.3 D x 2.25' H)
Pressure Port1/8-27 NPT male
Electrical Connection300 mm (12') pigtail leads 20 AWG, polyvinyl insulated
Weight221 g (7.8 oz)

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