ĐỒNG HỒ ĐO ÁP SUẤT WIKA 232.34

Design
ASME B40.100
Sizes
4½" & 6" (115 & 160 mm) dial size
Accuracy class
± 0.5% of span (ASME B40.100 Grade 2A)
± 1.0% of span (ASME B40.100 Grade 1A)
for 20,000 psi (1,600 bar) range and above
Ranges
Vacuum / Compound to 400 psi (25 bar)
Pressure from 15 psi (1 bar) to 30,000 psi (2,000 bar)
or other equivalent units of pressure or vacuum
Working pressure

Steady: full scale value

Fluctuating: 0.9 x full scale value

Short time: 1.5 x 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 flled
-40°F to +140°F (-40°C to +60°C) - silicone flled
Medium: max. +212°F (+100°C)
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 resistant (IP54) - without membrane
Weather tight (IP65) - dry case or flled case with membrane installed (standard for low mount versions)
Pressure connection
Material: 316L stainless steel
Lower mount (LM) or lower back mount (LBM)
1/4” or 1/2” NPT with M4 internal tap
Restrictor
Material: Stainless steel (0.6 mm), standard
Bourdon tube
Material: 316L stainless steel
1,000 psi (69 bar): C-shape
1,500 psi (100 bar): Helical
Movement
Stainless steel
Internal overload stop set at 1.1x full scale
Underload stop-standard
Dampened movement-optional
Dial
White aluminum with black lettering, stop pin at 6 o’clock
Standard WIKA psi single scales (4½” only) with large fgures at beginning and end for quick and easy identifcation.
Pointer
Black aluminum, adjustable
Case
Black fberglass-reinforced thermoplastic (POCAN)
Solid front, blowout back
Turret-style case with built in rear flange lugs

Window
Clear acrylic with Buna-N gasket
Case flling Type 233.34
Glycerine 99.7% and > 40 psi (2.5 bar)
Glycerine/Water - <= 40 psi (2.5 bar)
Optional extras
* Silicone dampened movement
* Panel mounting adaptor kit (feld assembled)
* Silicone case flling
* Halocarbon case flling
* Cleaned for oxygen service
* Instrument glass or safety glass window
* Drag pointer (maximum reading indicator)
* Alarm contacts switches (magnetic or inductive)
* Special process connections
* Custom dial layout
* External zero adjustment (4.5” size only)
* Case and ring in red or yellow thermoplastic (4½” LM only)
* Insightreflective dial options available in white, fluorescent yellow, fluorescent orange or glow-in-the-dark