Description

Design

ASME B40.100

Sizes

1½”, 2” & 2½” (41, 53 & 68 mm)

Accuracy class

± 3/2/3% of span (ASME B40.100 Grade B)

Ranges

Vacuum / Compound to 200 psi (16 bar)
Pressure from 15 psi (1 bar) to 6,000 psi (400 bar)
or other equivalent units of pressure or vacuum

Working pressure

Steady: 3/4 of full scale value
Fluctuating: 2/3 of full scale value
Short time: full scale value

Operating temperature

Ambient: -40°F to 140°F (-40°C to 60°C)
Media: 140°F (+60°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.

Pressure connection

Material: Copper-Alloy
Lower Mount (LM): 1½”, 2” and 2½”
Center Back Mount (CBM); 1½”and 2”
1/8” NPT, ¼” NPT, limited to wrench flat area
Restrictor Press-fit, 0.012″ orifice

Bourdon Tube

Material: copper alloy
≤ 870 psi (60 bar): C-shape
> 870 psi (60 bar): Helical

Movement

Copper alloy

Dial

White aluminum with stop pin and black lettering
“USE NO OIL” in red

Pointer

Black aluminum, non-adjustable

Case

1½”: gold-painted steel
2” & 2½”: SS Z&N coated (=brass polished look) or
gold-painted steel

Window

Twist-lock clear polycarbonate