Differential Pressure Indicators

Variety of SWPs and DP ranges

Schlumberger operator checking a measurement device

Our portfolio of BARTON measurement technology includes differential pressure (DP) indicators that are available for a variety of safe working pressures and DP ranges. They are widely used for the measurement of differential pressure, flow rate, and liquid levels.

Cameron DP indicators are actuated by a rupture-proof-bellows differential pressure unit (DPU) with integral temperature compensation. The BARTON 199 DPU features dual liquid-filled bellows that withstand repeated overranges equal to the safe working pressure of the housings without a change in calibration.

The indicating pointer traverses a 270° arc, providing excellent readability. It is driven by a precision jeweled rotary movement that multiplies rotation of the torque tube through a gear and pinion to the pointer. The movement employs a thermally stable Ni-SPAN-C hair spring. The movement has a micrometer screw for convenient range adjustments. You can make zero and range adjustments without removing the scale plate or pointer. Linearity adjustments are readily accessible after removal of the scale plate.


  • BARTON technology DPU sensor
  • NEMA 4/IP65 enclosures
  • Wide selection of DP ranges, including absolute, zero-center, and split ranges
  • Pulsation dampening
Differential Pressure Indicator
BARTON technology DP indicator.