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 +150°F(-40°C to +66°C)-dry
-4°F to +150°F(-20°C to +66°C)-glycerine filled
-40°F to +150°F(-40°C to +66°C)-silicone filled
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 (NEMA 3 / IP54)-without membrane
Weather tight (NEMA 4X / IP66) - dry case or filled case with membrane installed
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)
Bourdon tube
Material: 316L stainless steel
≤1,000 PSI (70 bar): C-shape
>1,000 PSI (70 bar): Helical
Movement
Stainless steel
Internal overload stop set at 1.1x full scale
Underload stop-optional
Dampened movement-optional
Dial
White aluminum with black lettering, stop pin at 6 o’clock
Standard WIKA psi single scales (4½" only) with large figures at beginning & end for quick and easy range identification
Pointer
Black aluminum, adjustable
Case
Black fiberglass-reinforced thermoplastic (POCAN)
Solid front, blowout back
Turret-style case with built in rear flange lugs
Window
Clear acrylic with Buna-N gasket
Case filling
Glycerine 99.7% - Type 233.34
Optional extras
- Silicone dampened movement
- Panel mounting adaptor kit (field assembled)
- Silicone case filling
- Halocarbon case filling
- 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 & 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