Potter PS40-EX Explosion Proof Low/High Supervisory Pressure Switch for Dry Valves – Nominal System Pressure 40 psi
See all products from potterAED 3,780.00 VAT included
Potter PS40-EX Series Supervisory Pressure Actuated Switches are designed primarily to detect an increase and/or decrease from normal system pressure in automatic fire sprinkler systems located in hazardous locations. Typical applications are: air/nitrogen supervision in dry pipe and pre-action systems, pressure tanks, air supplies, and water supplies. The PS40-EX has two switches. The Low switch is factory set to activate at approximately 30 psi (2,1 BAR) on a decrease in pressure.
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Description
Potter PS40-EX Series Supervisory Pressure Actuated Switches are designed primarily to detect an increase and/or decrease from normal system pressure in automatic fire sprinkler systems located in hazardous locations. Typical applications are: air/nitrogen supervision in dry pipe and pre-action systems, pressure tanks, air supplies, and water supplies. The PS40-EX has two switches. The Low switch is factory set to activate at approximately 30 psi (2,1 BAR) on a decrease in pressure. The High switch is factory set to activate at approximately 50 psi (3,5 BAR) on an increase in pressure. NFPA 72 requires a supervisory signal if the pressure increases or decreases by 10 psi from normal. The PS40 is factory set for a normal air pressure of 40 psi
Features
- Two independently adjustable switches, no tools needed
- Designed and approved for use in hazardous locations internationally
- Brass pressure connection
- Solid metal enclosure
- Weatherproof
Specifications
- Product: Explosion Proof Supervisory Pressure Switch
- Brand: Potter
- Dimensions: 152mm Dia. x 178mm H (6” Dia. x 7” H)
- Enclosure: Cast aluminum
- Pressure Connection: 1/2” NPT male brass fitting
- Factory Setting: One switch operates on pressure decrease at: 206 kPA/2.1 BAR/30 PSI, One switch operates on pressure increase at: 344 kPA/3.5 BAR/50 PSI
- Pressure Range: 69 kPA/.69 BAR/10 PSI to 1207 kPA/12.07 BAR/175 PSI
- Maximum Differential: 14 kPA/.14 BAR/2 PSI at 138 kPA/1.38 BAR/20 PSI, 34 kPA/.34 BAR/5 PSI at 1207 kPA/12.07 BAR/175 PSI
- Maximum System Pressure: 2068 kPA/20.68 BAR/300 PSI
- Switch Contact Ratings: Two Sets of SPDT (Form C), 15.0 Amps at 125/250 VAC, 2.0 Amps at 30 VDC
- Conduit Entrance: 1/2” NPT female conduit opening To maintain type “d” component protection use an Ex component conduit sealing device.
- Environmental Specifications: For use in hazardous locations classified by CENELEC: Ex db IIB T6 Gb Class I: Div 1 Groups B, C, D, Class II: Div. 1 Groups E, F, G,Class III: Div. 1
- Enclosure Rating: IP66/NEMA 4,9
- Temperature Rating -40°C to 60°C (-40°F to 140°F)
- Cover Tamper: Cover incorporates tamper resistant fastener that requires a special key for removal. One key is supplied with each device.
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