Differential Pressure Flow

Popular Method of Measuring Liquids and Gases

  • Cost saving solution
  • High accuracy and reliability
  • Effective for both small and large pipelines

How Differential Pressure Flow Measurement Works

A differential pressure gauge connected to the inlet and outlet of a primary flow element, such as an orifice plate or Venturi, represents a simple and cost effective method of monitoring flow. Connect the high pressure side to the inlet of the flow element and the low pressure side to the outlet, and the flow rate is easily read on a differential pressure gauge analog dial. Differential pressure flow transmitters and switches allow for remote measurement of the differential pressure flow rate.

Bernoulli’s law tells us that flow rate is proportional to the square root of differential pressure. This connection between pressure and flow is a simple calculation that enables the most popular and cost effective method of measuring flow in many applications. Imagine the high cost of an in-line flow meter on a 24-inch pipe. Compare that to the cost of installing a simple orifice plate, or any method of creating a slight pressure drop, or pressure increase, and you have a solution that can save hundreds of dollars. Talk to our DP experts about measurement options that are right for your application.

We look forward to working with you in designing a differential pressure or flow monitor for your specific needs.

A Differential Pressure Flow Solution

Orange Research supplies differential pressure gauges, switches, and transmitters for differential pressure flow measurement. Consider the combination of a DP gauge with a differential pressure flow transmitter or switch for both local and remote indication of conditions. Or select an electronic DP flow measurement solution with no local gauge readout. Normal and hazardous location versions are available. Simply inform us of the flow rate, and the differential pressure that rate is based on, and we can supply the proper output on the gauge or in the electronics.

Orange Research has supplied our popular model 1516 differential pressure gauge for effective and reliable DP flow measurement for many years. We recently added a flow element to our 1516 to offer a fully integrated differential pressure flow meter that handles up to 200GPM flow rates. If you have questions about selecting the right differential pressure flow transmitter, gauge or switch model for your application, contact our experts,

Differential Pressure Flow Meters: Up to 200GPM

Differential Pressure Gauge w/ Square Root Output: Model 1516

Application of DP Flow Measurement

Differential pressure flow measurement is wide used across various industries due to its accuracy, reliability, and cost-effectiveness. This method is commonly applied with primary flow elements such as Venturi tubes and orifice plates to measure fluid flow in both large and small pipelines. Key application areas include:

  • Oil & Gas: Used in pipeline monitoring, custody transfer, and wellhead flow measurement.
  • Hydraulic Systems: Provides accurate flow measurement in pumps, power systems, and water distribution.
  • HVAC & Building Systems: Essential for air and water flow monitoring in heating, ventilation, and air conditioning systems.
  • Water & Wastewater Treatment: Helps regulate flow rates in treatment plants, helping ensure efficient processing and compliance with environmental regulations.
  • Power Generation: Used in steam and colling water flow measurement in power plants.
  • Chemical & Process Industries: Help ensure precise flow measurement in chemical reactions and material handling.

This approach provides an economical and highly accurate solution, making it a preferred choice for industries requiring repeatable and stable flow measurements across varying operating conditions. 

Contact Our Differential Pressure Flow Experts

If you have questions about selecting the right differential pressure flow transmitter, gauge or switch model for your application, contact our experts,. As a leading flow meter and differential pressure company, our products are designed to deliver precise and dependable performance in the most demanding environments. We look forward to learning about your application requirements.

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We design, customize and apply innovative engineering solutions.

WARNING: Some of our products contain Nickel, a chemical known to the State of California to cause cancer. For more information go to: www.p65warnings.ca.gov

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