ĐỒNG HỒ ĐO ÁP SUẤT CÓ TIẾP ĐIỂM ĐIỆN WIKA 230.15-851

Applications
* For gaseous and liquid, also aggressive media for demanding high purity applications, also in aggressive ambience
* Semiconductor and flat panel industry
* Medical and pharmaceutical industry, biotechnology industry, production of active ingredients
* For high requirements to keep media contamination-free
Special Features
* Up to 2 Reed contacts, SPDT
* Switch points adjustable on site
* Wetted parts from stainless steel 316L and face seal process connections
* Electropolished internals and case, internal surface finish up to Ra < 0.25 μm [Ra < 10 μin]
* Scale ranges from -30 inHg ... 45 psi to 0 ... 6,000 psi
Specifications
Design: Bourdon tube pressure gauge per ASME B40.100 
Nominal size (NS): 2.0" [50 mm]
Accuracy class:
      Indication: ±2,5 % of measuring span according to ASME B40.100 (Grade A)
      Switch: ±5 % of measuring span at switch point
Scale range: see datasheet
Pressure limitation:
      Steady: Full scale value
      Fluctuating: 3/4 x full scale value
      Short time: 2/3 x full scale value
Permissible temperature range:
      Medium: ≤ 212 °F [≤ 100 °C]
      Ambient: -40 ... +104 °F [-40 ... +40 °C]
Temperature effect: When the temperature at the measuring system deviates from the reference temperature +68 °F [+20 °C]: max. ±0.4 %/10 K of full scale value
Ingress protection: IP20 per IEC/EN 60529
Process connection Material:
      VCR-compatible face seal fittings
      Face seal nut: Stainless steel 316, Option: Gall resistant (Nitronic® 60)
      Face seal gland: Stainless steel 316L 
Connection location Thread:
      Lower mount (LM) or center back mount (CBM)
      1/4 swivel male or female face seal, 1/4 fixed male, 1/4 weld stub
      9/16-18 UNF swivel male or female face seal
      Option: 1/4 NPT male
Pressure element: Stainless steel 316L; C-type or helical type
Material of wetted parts: Stainless steel 316L, electropolished
Surface roughness of wetted parts: Ra ≤ 0.25 μm [10 μin] ; For process connection 1/4 NPT male: Ra ≤ 0.5 μm [20 μin] 
Level of cleanliness:
      Clean for semiconductor applications in accordance with SEMI / SEMATEC
      Cleaned and packaged in class 100/10 cleanroom 
      Packaged in two bags
      Purged with nitrogen
      Protective cap over threaded connection
Movement: Stainless steel
Dial: Aluminium, white, black lettering with pointer stop pin 
Case: Stainless steel 304, electropolished
Pointer: Aluminium, black
Window: Polycarbonate, Screw-fitted on case (twist lock)
Electrical data, contact model 851: See datasheet