ĐỒNG HỒ ĐO ÁP SUẤT WIKA 213.40

Design: ASME B40.100 & EN 837-1
Sizes: 2 1/2” & 4” (63 & 100 mm)
Accuracy class:
      2 1/2”: ± 2/1/2% of span (ASME B40.100 Grade A)
      4”: ± 1% of span (ASME B40.100 Grade 1A)
Ranges:
      Vacuum / Compound to 200 psi
      Pressure from 15 psi to 15,000 psi or other equivalent units of pressure or vacuum
Working pressure:
2 1/2”:    
      Steady: 3/4 scale value
      Fluctuating: 2/3 full scale value
      Short time: full scale value
4”:        
      Steady: full scale value
      Fluctuating: 0.9 x full scale value
      Short time: 1.3 x full scale value
Operating temperature
Ambient:                    
      -4 °F to +140 °F (-20 °C to +60 °C) - glycerine flled
      -40 °F to +140 °F (-40 °C to +60 °C) - silicone flled
Medium: max.: +140 °F (+60 °C)
Temperature: Additional error when temperature changes from reference temperature of 68 °F (20 °C) ±0.4% of span for every 18 °F (10 °K) rising or falling.
Weather protection: Weather tight (NEMA 4X / IP 66)
Pressure connection
Material: copper alloy
      Lower mount (LM) or center back mount (CBM) - 2½” (63 mm)
      Lower mount (LM) or lower back mount (LBM) - 4” (100 mm)
      1/4” NPT or 1/2” NPT limited to wrench flat area
Bourdon tube:
      2 1/2” (63 mm) < 870 psi (60 bar):     C-shape copper alloy
      2 1/2” (63 mm) > 870 psi (60 bar):     Helical copper alloy
      4” (100 mm) < 1,000 psi (70 bar):   C-shape copper alloy
      4” (100 mm) > 1,000 psi (70 bar):   Helical stainless steel
Movement: Copper alloy
Dial: White aluminum with black lettering, 2½” with stop pin
Pointer: Black aluminum
Case: Gold-painted forged brass with integral connection and vent plug
Bezel ring: 
      Gold-plated ABS cover ring (2½”)
      Chrome-plated brass cover ring (4”)
Window: Acrylic with Buna-N gasket
Case filled: Glycerine 99.7%
Optional extras
* Brass restrictor
* Front or rear flange
* U-clamp mounting
* Laminated safety glass or flat glass window
* Red drag pointer or mark pointer
* Silicone or Halocarbon Oil case flling
* Special connections limited to wrench flat area