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Mini Pressure Switch - PXS
Brand: WIKA Alexander Wiegand SE & Co. KGThese high-quality mechanical pressure switches have been developed especially for safety-critical applications.
The great advantage of mechanical pressure switches is that no supply voltage is required for the switching process.
Features- Compact and slimline design
- Robust switch enclosure from stainless steel 316, IP66, NEMA 4X
- Wide selection of setting ranges available, 1 … 2.5 bar to 200 … 1,000 bar
- Set point repeatability of ≤ 1 % for reliable switching
- High switching power and large selection of contact variants and electrical connections
Specifications
Version
- Miniature Pressure switch
- Option:
- Version for hazardous areas (Ex ia)
- Oxygen version (Cleaned for oxygen Service)
- NACE compliant per MR-0175, ISO 15156 and MR-0103
- Drying of Wetted Parts
- Offshore Version
- Tropical version (Suitable for environments with increased Air humidity)
- Geothermal Version
- Version for ammonia applications
Set Point Repeatability
- ≤ 1 % of end of setting Range
Ignition Protection Type (Option)
- Ex ia I Ma (Mines)
- Ex ia IIC T6/T4 1) Ga (Gas)
- Ex ia IIIC T85/T135 1) Da IP66 (Dust)
Safety-Related Maximum Values (Only for Ex Ia Version)
- Current li: 100 mA Internal inductance Li, 0 mH
- Power Pi 0.75 W
- Voltage Ui: DC 30 V Internal capacitance Ci, 0 μF
Contact Version
- The DPDT function is Realised with 2 simultaneously triggering SPDT micro switches. See table on next page for available Contact versions.
- 1 x DPDT (Double Pole Double Throw)
- 1 x SPDT (Single Pole Double Throw)
Electrical Connection
- Threaded Connection with Connection cable Material of Threaded Connection: Stainless Steel 316
- Threaded Connections: - 1/2” NPT Male - M20 x 1.5 Male via Adapter - 1/2” NPT Female, 3/4” NPT via Adapter
- Connection cable: - Length: 1.5 m, 3 m, 5 m (Other lengths on Request) - Cable sheath material: Silicone - Wire cross-section: 0.5 mm² (20 AWG)
- Terminal Box: - Aluminium Alloy, Copper-Free, epoxy Resin Coated - 3 x 1/2” NPT Female - Ingress Protection IP65
Dielectric Strength
- Safety ClassI (IEC 61298-2: 2008)
Process Connection
- 1/4” NPT Female (Standard)
- 1/2” NPT, G 1/4 Female via Adapter
- M20 x 1.5 Male via Adapter
- Further threaded Connections and open Connecting flanges on Request
- 1/2” NPT, G 1/2 A, G 1/4 A Male via Adapter
Permissible Temperature
- Medium: Depending on Sensor Element and Sealing, see tables on next page
- Ambient: -40° to +85° C for Non-Ex Versions.
- For Version Ex ia, see Operating instructions.
Switch Enclosure
- Tamper-proof due to access cover plate with lead Seal option
- Laser-engraved product label from Stainless Steel
- Pressure monitoring and control of processes
- Safety-critical applications in general process instrumentation, especially in the chemical and petrochemical industries, oil and gas industries, power generation incl. nuclear power plants, water/wastewater industries, mining
- For gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive environments
- For measuring locations with limited space, e.g. control panels
