Design
EN 837-1 & ASME B40.100

Pressure connection
Material: copper-alloy
Lower mount (LM)
1/8“ or 1/4“ NPT

Sizes
2.5”, 3” & 4” (63 mm, 80 mm & 100 mm)

Accuracy class
± 1/2/5% of span
1% at zero pressure
2% in the first 75% of the scale
5% in the last 25% of the scale

Movement
Copper alloy, silicone dampened

Ranges
0/120 psi, retard to 350 psi
0/500 psi

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

Pointer
Black aluminum

Case
Red or blue painted steel

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.