P954_Explosion proof pressure switch
Service intended
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 |
