Potter PS25 Series Supervisory Pressure Actuated Switches are designed primarily to detect an increase and/or decrease from normal system pressure in automatic fire sprinkler systems. Typical applications are air/nitrogen supervision in the dry pipe and pre-action systems, pressure tanks, air supplies, and water supplies.
The PS25-2 has two switches. The Low switch is factory set to activate at approximately 18 psi (1,2 BAR) on a decrease in pressure. The High switch is factory set to activate at approximately 28 psi (1,9 BAR) on an increase in pressure. NFPA 72 requires a supervisory signal for both high and low pressure conditions. The PS25 is factory set for a normal air pressure of 23 psi. See section heading Adjustments and Testing if other than factory set point is required.
Potter PS25 Supervisory Pressure Switch with Two Sets SPDT Contacts
AED 278.25 VAT included
Potter PS25 Series Supervisory Pressure Actuated Switches are designed primarily to detect an increase and/or decrease from normal system pressure in automatic fire sprinkler systems. Typical applications are air/nitrogen supervision in the dry pipe and pre-action systems, pressure tanks, air supplies, and water supplies. The PS25-2 has two switches. The Low switch is factory set to activate at approximately 18 psi (1,2 BAR) on a decrease in pressure. The High switch is factory set to activate at approximately 28 psi (1,9 BAR) on an increase in pressure. NFPA 72 requires a supervisory signal for both high and low pressure conditions.
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- Product: Supervisory Pressure Switch
- Brand: Potter
- Dimensions 3.78”(9,6cm)Wx3.20”(8,1cm)Dx4.22”(10,7cm)H
- Enclosure: Cover - Die Cast, Finish - Red Powder Coat, Base - Die Cast, All parts have corrosion resistant finishes
- Pressure Connection: Nylon 1/2” NPT male
- Differential: Typical 1 lb. at 10 PSI (,07 at ,7 BAR), 4 lbs at 60 PSI (,28 at 4,1 BAR)
- Pressure Range: 10-60 PSI (,7-4,1 BAR)
- Maximum System Pressure: 300 PSI (20,68 BAR)
- Temperature range: -40º F to 140ºF (-40ºC to 60ºC)
- Contact Ratings: (2) SPDT (Form C) Switches, 10.1 Amps at 125/250 VAC, 2.0 Amps at 30 VDC
- Factory Adjustment: PS25-2 operates on increase at 28 PSI (1,9 BAR) and on decrease at 18 PSI (1,2 BAR)
- Conduit Entrances: Two knockouts for 1/2” conduit provided. Individual switch compartments and ground screw suitable for dissimilar voltages
- Cover Tamper: Cover incorporates tamper resistant fastener that requires a special key for removal. One key is supplied with each device.
- Service Use: NFPA 13, 13D, 13R, 72
- Independent switch adjustment, no tools needed.
- Non-corrosive pressure connection.
- Separate isolated wiring chambers.
- Two conduit / cable entrances
- Solid metal enclosure.
- Two switch model
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