产品名称：PS72系列压力开关

PS71 系列压力开关

通用型微型压力开关 
 

特性... 

• 10到750psi (0.7到51.7bar) 
• 现场可调或工厂设定 
• 在低温极限下设定点变化极小
   

概述/设计原理: 

PS72系列压力开关基于多功能微动开关设计，适用于OEM客户的中等压力的应用，拥有已经证实的PS71系列的全部性能，同时还具备Kapton®的低温能力. 

Specifications:
Operating Temperature		see table below
Switch		see table below
Wetted Parts		Housing: Zinc plated steel (316L stainless steel and brass available) Diaphragm: Kapton® (polyimide) O-Ring: Nitrile (other materials available)
Electrical Termination		DIN 43650A IP65; Spade Terminals IP00; Flying Leads IP65; Conduit with Flying Leads IP65; IP Option IP66
Proof Pressure		3000 psi (207 bar)
Burst Pressure		6000 psi (414 bar)
Approvals		CE, UL Approved units available, consult factory
Weight, Approximate		0.4 lbs. (0.15 kg) Steel

Recommended Operating Temperature Limits*
Diaphragm Material	-A, -B, -C Circuit without -RD	-A, -B, -C Circuit with -RD
Teflon Coated Kapton®	-40°F to 185°F (-40°C to 85°C)	-40°F to 250°F (-40°C to 121°C)

* Switches may function below the cold temperature limit, but the setpoints and deadband will increase. Consult factory for details.

Switch Ratings
Electrical Switch Ratings	AC	DC
No option or -RD	5 amps @ 125/250 Volts	5 amp resistive, 3 amps inductive @ 28 Volts
-G or -RD with -G	1 amp @ 125 Volts	1 amp resistive, 0.5 amp inductive @ 28 Volts
-10A or -SP without -G	10.1 amp @ 125/250 Volts
-SP with -G	2 amp @ 125/250 Volts

Repeatability / Deadband
Pressure Range Code	Pressure Range	Repeatability	Average Deadband*
10	10-30 psi (0.7 to 2.1 bar)	± 1.5 psi (0.103 bar) + 3% of setting	3.5 psi (0.28 bar) + 12% of setting
20	25-75 psi (1.7-5.2 bar)	± 2.5 psi (0.172 bar) + 3% of setting
30	65-300 psi (4.5-20.7 bar)	± 5.0 psi (0.138 bar) + 3% of setting	20 psig (1.38 bar) + 12% of setting
40	250-1000 psi (17.2-69 bar)	± 15 psi (1.03 bar) + 3% of setting	45 psig (3.10 bar) + 13% of setting

*These numbers are for the standard microswitch. With either the -SP or 10A option, the values are typically 20% greater than those listed. With the -RD option, the values are typically 25% less than those listed. In certain applications, deadband can be tailored and controlled to customer specifications. Consult factory for details.