PSW-401 Heavy Duty Industrial Pressure Switch

Designed for applications in hazardous atmospheres, Omega PSW-400 Series Pressure Switch offers complete reliability due to a rugged, die-cast aluminum enclosure with waterproof gaskets and two separate chambers for electronics and actuators. Single or dual setpoints are available, with all critical parts made of stainless steel. In addition, the PSW-400 Series employs vibration-resistant setpoints and a calibrated scale.

Contact us
Category:

Feature

  • Dual Chamber Design Isolates Electronics from Pressure Media
  • Heavy Duty Cast Aluminum with Corrosion-Resistant Epoxy Coating
  • Meets NEMA-7 and -9 Classifications
  • Gasketed Covers

Specifications

  • Approval: UL listed, Class I, Divisions 1 and 2, Groups B, C, D. Class II, Divisions 1 and 2, Groups E, F, G CSA certified
  • Storage Temp.: -29 to 65°C (-20 to 150°F)
  • Ambient Temp. Limits: -29 to 65°C (-20 to 150°F)
  • Process Temp. Limits:
  •    SS: 149°C (300°F)
  •    Buna-N: 65°C (150°F)
  • Enclosure Classification: NEMA-7, -9 hazardous location, explosion proof, dust ignition proof
  • Setpoint Repeatability: ±1% of range
  • Switch Output: 1 or 2 SPDT switch can be wired “normally open” or “normally closed”
  • Electrical Rating: 10 A: 125/250 Vac; 0.5 A: 125 Vdc; 0.25 A: 250 Vdc; 15 A: 125/250 Vac. Optional hermetically sealed 5 A: 125/250 Vac
  • Enclosure: Dual chamber epoxy-coated cast aluminum, gasketed
  • Electrical Connection: 2 ea. 3/4 NPT electrical conduit hubs
  • Pressure Connection: 1/4 NPT female; vacuum to 600 psi; 1/2 NPT; Male 1/4 NPT female for 1000 to 3000 psi
  • Connection Material: Vacuum thru inches H2O ranges; carbon steel All psi ranges; 316 SS
  • Dimensions: psi ranges: 206 (max) H x 140 W x 70 mm D (from Center line) (7.1 H x 5.5 W x 2.8″ D from Center Line) inH2O ranges: W & D = 140 mm (5.5″)
  • Weight: 2.7 kg (6 lb)
  • Enclosure RatingNEMA 7
  • Maximum Ambient Temperature65 {C} (150 {F})
  • Maximum Rating10
  • Maximum Storage Temperature65 {C} (150 {F})
  • Minimum Ambient Temperature-29 {C} (-20 {F})
  • Minimum Storage Temperature-29 {C} (-20 {F})
  • Pressure TypeGauge
  • Pressure UnitsPSIG
  • repeatability±1% of range
  • Switch Operation“normally open” or “normally closed