POTTER压力开关PS40-EX介绍
POTTER公司已经在密苏里州运营了120多年。那时，POTTER经历了许多变化，并通过开发具有全球影响力的高质量产品而成长为一家优质公司。
POTTER压力开关PS40-EX技术参数
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Technical Specifications
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Dimensions
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152mm Dia. x 178mm H (6” Dia. x 7” H)
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Enclosure
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Cast aluminum
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Pressure Connection
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1/2” NPT male brass fitting
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Factory Setting
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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
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Pressure Range
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69 kPA/.69 BAR/10 PSI to 1207 kPA/12.07 BAR/175 PSI
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Maximum
Differential
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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
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Maximum System Pressure
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2068 kPA/20.68 BAR/300 PSI
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Switch Contact Ratings
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Two Sets of SPDT (Form C)
15.0 Amps at 125/250 VAC
2.0 Amps at 30 VDC
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Conduit Entrance
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1/2” NPT female conduit opening
To maintain type “d” component protection use an Ex component conduit sealing device.
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Environmental Specifications
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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
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Enclosure Rating
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IP66/NEMA 4,9
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Temperature Rating
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—40°C to 60°C (-40°F to 140°F)
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Cover Tamper
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Cover incorporates tamper resistant fastener that requires a special key for removal. One key is supplied with each device.
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Service Use
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NFPA 13, 13D, 13R, 72
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POTTER压力开关PS40-EX产品介绍
Potter PS40-EX监控压力致动开关主要用于检测位于上述危险位置的自动喷水灭火系统中正常系统压力的升高和/或降低。典型应用包括：干管系统，预作用空气/氮气监控，压力罐，空气和水供应。 PS40-EX开关出厂设置为正常系统压力为40 PSI（2.8 BAR）。标有LOW字样的开关设置为在30 PSI（2.1 BAR）的压力降低10 PSI（7 BAR）时运行。标有“ HIGH”字样的开关设置为在50 PSI（3.5 BAR）的压力增加10 PSI（7 BAR）时运行。
The Potter PS40-EX Supervisory Pressure Actuated Switch is designed primarily to detect an increase and/or decrease from normal system pressure in automatic fire sprinkler systems located in hazardous locations classified as shown above. Typical applications are: Dry pipe systems, pre-action air/nitrogen supervision, pressure tanks, air supplies, and water supplies. The PS40-EX switch is factory set for 40 PSI (2,8 BAR) normal system pressure. The switch marked with the word LOW is set to operate at a pressure decrease of 10 PSI (7 BAR) at 30 PSI (2,1 BAR). The switch marked with the word HIGH is set to operate at a pressure increase of 10 PSI (7 BAR) at 50 PSI (3,5 BAR).
POTTER压力开关其他常用型号：
POTTER PIVSU-EX-O
POTTER VSR-FEX
POTTER PS40-EX
POTTER PS10-EX
POTTER OSYSU-EX
POTTER OSYSU-EX-O
POTTER PIVSU-EX