Design ASME B40.100
Sizes 4½” & 6” (115 & 160 mm) dial size
Accuracy class ± 0.5% of span (ASME B40.100 Grade 2A)
Ranges Vacuum / Compound to 200 psi (16 bar) Pressure from 15 psi (1 bar) to 1,000 psi (60 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 +65°C) - dry -4°F to +150°F (-20°C to +65°C) - glycerine filled -40°F to +150°F (-40°C to +65°C) - silicone filled Medium: +150°F (+65°C) maximum
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: Copper alloy 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: Copper alloy C-type
Movement Copper alloy 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 213.34
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, flurescent orange or glow-in-the-dark
