Model 712.25DP

Differential Pressure Gauges

Copper Alloy Wetted Parts, Aluminum Case, Bourdon Tube Series

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  • Differential pressure measurement of two applied pressures
  • For non-corrosive, non-crystallizing gaseous and liquid media
  • Heating ventilation and air conditioning

Product Features

  • Differential indication via subtracting movement and one indicating pointer
  • Economical and rugged design
  • Scale ranges from 0...15 psi (1 bar)
  • Available in 4½" (115 mm) and 6" (160 mm)


4½" & 6"

+ 2/1/2% of span
(ASME B40.1 Grade A)

Differential pressure from 0/15 PSID(1 bard) to 0/1000 PSID (70 bard)

Static Pressure Rating
1.3 x full scale pressure

Working Range
Steady: 3/4 of full scale value
Fluctuating: 2/3 of full scale value
Short time: 1.3 x full scale value

Operating Temperature
Ambient:-4°F to 140°F (-20°C to 60°C)
Media:max. 140°F (+60°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
NEMA 2 (IP 33)

Material: copper alloy
Lower mount (LM) only
2 x 1/4" NPT

Bourdon Tube
Material: copper alloy
2 x C-shape

Copper alloy, dual-subtracting

White aluminum with black lettering. Dial marked with "L" indicating the low pressure connection and "H" indicating the high pressure connection.

1 black adjustable aluminum pointer

Black cast aluminum with built-in rear flange

Instrument glass

Threaded Ring
Black aluminum

Operating Principle
High pressure needs to be applied to the right connector, low pressure to the left side. A subtracting movement will indicate the difference of two applied pressures via one pointer

Differential Pressure Gauges<br>
Model 712.25DP

Differential Pressure Gauges
Model 712.25DP

  • Differential Pressure Gauges<br>
Model 712.25DP
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