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Mini Pressure Switch - PXS
Brand: WIKA Instruments Ltd.These 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 class I (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 ... +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
