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Differential Pressure Flow Meters

Differential Pressure (DP) flow meters introduce a constriction in the pipe that creates a pressure drop across the flow meter. This technology is suitable for applications, including DP measurement across filters, heat exchangers, backflow preventers, pipelines, ducts and more.

Differential Pressure Flow Meters

No Moving Parts. No Extensive Maintenance.

Differential pressure technology is a leading choice of measurement technology that provides a reliable and long-term solution. 

  • Minimal Maintenance. Has no moving parts, which virtually eliminates routine system maintenance for facility managers and other key stakeholders.
  • Custom Solutions. Available as a custom engineered solution specifically manufactured to fit within your system.
  • Application Flexibility. Suitable for a number of applications, including across filters, heat exchangers, backflow preventers, pipelines, ducts and more.

How It Works

  • Measuring Principle
  • How It Measures
Measuring Principle
Measuring Principle

Differential pressure meters use Bernoulli’s equation to measure the flow of fluid within a pipe. Bernoulli’s equation determines that pressure drop across the constriction is proportional to the square of the flow rate.

How It Measures
How It Measures

Measures the flow of liquid within a pipe by introducing a constriction that creates a pressure drop. Pressure sensors measure the pressure before and after the constriction. The resulting pressure drop that occurs across the constriction is relative to the square of the flow rate; a higher pressure drop equals a higher flow rate.

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Cone Differential Pressure Flow Meter
Accuracy
±0.5%
±0.5%
Size
12...609 mm
1/2...24 in.
Repeatability
± 0.1% or better
± 0.1% or better

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