ĐỒNG HỒ ĐO ÁP SUẤT WIKA 233.30 type 4.5"

Design
ASME B40.100
Sizes
4½” (115 mm)
Accuracy class
± 0.5% of span (ASME B40.100 Grade 2A)
Ranges
Vacuum / Compound to 200 psi (16 bar)
Pressure from 0/15 psi (1 bar) to 0/15,000 psi (1000 bar)
Working pressure
Steady:          full-scale value
Fluctuating:    0.9x full-scale value
Short time:     1.3x full-scale value
Operating temperature
Ambient:

-40°F to +140°F (-40°C to +60°C) - dry
-4°F to +140°F (-20°C to +60°C) - glycerine-filled
-40°F to +140°F (-40°C to +60°C) - silicone-filled
Medium:

+392°F (+200°C) maximum - dry
+212°F (+100°C) maximum - liquid-filled
Temperature error
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 / IP65)
Pressure connection
Material: 316L stainless steel
Lower mount (LM)
¼” NPT or ½” NPT limited to wrench flat area
Bourdon tube
Material: 316L stainless steel
< 1,500 psi (100 bar): C-shape
> 1,500 psi (100 bar): Helical
Movement
Stainless steel
Dial
White aluminum with black lettering and stop pin at 6 o'clock
Pointer
Black aluminum, adjustable

Case
316L stainless steel with solid baffle wall and blowout back (safety case)
For pressure ranges < 300 psi, case has a compensating valve/fill plug to vent case pressure
Window
Safety Glass with Buna-N gasket
Bezel ring
316L stainless steel, bayonet-type
Case fill
Glycerine 99.7% - Type 233.30 (LM only)
Optional extras
Other pressure connections
Restrictor for high dynamic pressure pulsations
Mounting lugs for wall mounting*
Silicone or Halocarbon oil case filling (LM only)
Red drag pointer or mark pointer
Acrylic (PMMA) window
Custom dial layout
InSightTM reflective dial options available with white, fluorescent yellow, fluorescent orange or glow-in-the-dark dial backgrounds
Other pressure scales available: bar, kPa, MPa, kg/cm² and dual scales