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Design
EN 837-1 & ASME B40.100
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Pressure connection
Material: copper alloy
1/8” or ¼” NPT (¼” not available in 1½” case size)
Lower mount (LM) or center back mount (CBM)
(1½” size only available with CBM connection)
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Sizes
1½”, 2” & 2½” (40, 50 & 63 mm)
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Bourdon tube
Material: copper alloy
3 0” Hg (Vac) to 800 psi C-type
1000 psi to 6000 psi helical type
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Accuracy class
± 3/2/3% of span (ASME B40.100 Grade B)
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Movement
Copper Alloy
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Ranges (All ranges not stocked)
Vacuum / Compound to 200 psi
Pressure from 15 psi to 6,000 psi
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Dial
White ABS with stop pin and black lettering
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Working pressure
Steady: 3/4 of full scale value
Fluctuating: 2/3 of full scale value
Short time: full scale value
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Pointer
Black ABS
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Operating temperature
Ambient: -4°F to 140°F (-20°C to 60°C)
Media: 140°F (+60°C) maximum
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Case
1½”: black ABS
2” & 2½”: black ABS with integral profile ring
O-ring seal between case and socket
Ranges <_ 100 psi with internal pressure compensation
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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.
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Window
Acrylic, ultrasonically welded to case
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Weather protection
Weather tight (IP 65), NEMA 4X
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Case fill
Glycerine 99.7%
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