ĐỒNG HỒ ĐO ÁP SUẤT WIKA 230.25

Design: ASME B40.100
Sizes:
      2” (50 mm)
      1 1/2” (40 mm)
Accuracy Class:
      2”: ± 2/1/2% of span (ASME B40.100 Grade A)
      1 1/2”: ± 3/2/3% of span (ASME B40.100 Grade B)
Ranges:
      Vacuum / compound to 30”Hg/0/300 psi
      Pressure from 15 psi up to 5000 psi or other equivalent units of pressure or vacuum
Working Pressure:

      Steady: 3/4 full-scale value

      Fluctuating: 2/3 full-scale value

      Short time: full-scale value

Operating Temperature:
      Ambient: -40°F to +140°F (-40°C to +60°C)
      Medium: +212°F (+100°C) maximum
Temperature Error: Additional error when temperature changes from reference temperature of 68°F (20°C) ±0.4% for every 18°F (10°C) rising or falling. Percentage of span.
Weather Protection: Weather resistant (NEMA 3 / IP 54)
Pressure Connection
Material: Face-seal nut, 316 SS
      Face-seal gland, 316L SS VOD or VIM/VAR
Position: Lower mount (LM)
      Center back mount (CBM)
Type of Connection: Face-seal fixed male, swivel male or female
      Wetted Surface Finish: Ra < 0.25µm (Ra < 10µinch)
Bourdon Tube Material: 316L SS
      30”Hg (vac) to 1,000 psi, C-type
      1,500 to 5,000 psi, helical type
      Helium leak tested 1 x 10-9 scc/sec (inboard)
Socket Material: 316L VIM/VAR electropolished
      Ra < 0.25µm (Ra < 10µinch) – internal

Movement: Stainless steel
Dial: White aluminum with stop pin and black lettering
Pointer: Black aluminum
Case: 304 SS, electropolished
Window: Polycarbonate: twist-lock (2”), snap cap (1½”)
Cleanliness:
      UHP ‘clean’ for semiconductor gas applications - in accordance with SEMI/SEMATECH
      Cleaned and packed in class 100/10 cleanroom
      Packaged in two bags
      Purged with Nitrogen
      Protective cap over threaded connection
Order Options (minimum order may apply):
      Inductive Pressure Switch (830.1E)
      Custom dial layout
      Dual pressure scales
      Optional materials for Male / Female Face-seal Nuts - 316 SS, Gall Resistant (Nitronic 60)