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 |
