P954 diaphragm type pressure switch can be used in a variety of process lines. Internal micro switch is operated by pressure of various fluids, such as atmospheric pressure and water pressure. The pressure sensing part is a force balanced and piston actuated assembly.
Fluid
Gas and oil
Repeatability
±0.5 % of adjustable range ±1.0 % of adjustable range
Adjustable rangee (mbar, MPa, kPa, bar)
-0.9 to 275 bar
Dead band
Fixed One SPDT : Approx. 5 % of adjustable range Two SPDT : Approx. 10 % of adjustable range
Working temperature
· Ambient : -25 ~ 65 °C (O-ring material : Viton) -40 ~ 65 °C (O-ring material : Silicone) · Fluid : Max. 100℃
Degree of protection
EN60529/IEC529/IP67
Standard features
Pressure connection
Stainless steel (316SS) Monel and Hastelloy-C
Element
Stainless steel (316L SS) Monel, Hastelloy-C
Case and cover
ALDC 12.1 Silver gray finished aluminium
Process connection
½" NPT (F)
Contact
Micro contact type One SPDT (P954-1B3) Two SPDT (P954-2B3)(Only available with single setpoint)
Contact rating
SPDT contact rating AC 125 V / 250 V, 15 A DC 125 V, 0.5 A for resistance load DC 125V, 0.03 A for inductive load
Conduit connection
¾" NPT (F)
Certificates
ATEX II 2G Ex db IIC T6 Gb ATEX II 2D Ex tb IIIC T85°C Db IP67 IECEx Ex db IIC T6 Gb IECEx Ex tb IIC T85°C Db IP67 KCS Ex db IIC T6 Gb KCS Ex tb IIC T85°C Db