Differential Pressure Calculator

The differential pressure calculator will help you to find out how much pressure has changed across a valve or a fluid flow device in a fluid system. Differential pressure in a fluid flow system is used in a variety of applications, from a pitot tube in an airplane to monitor airspeed to a pneumatic valve in a robotic arm, and everything in between.

Pressure switches respond to pre-set pressure changes to initiate circuit breakers or perform other adjustments, such as opening an extra valve, diverting fluid flow, or detecting an obstruction in pipes or airways. Pressure sensors or gauges that measure the pressure in a fluid system work in tandem with so many pressure switches.

The theory can be applied to any fluid flow in a pipe, independent of its location. It could be breathing medical equipment, aviation flow monitoring, HVAC (heating, ventilation, and air conditioning) systems, or any other hydraulic or pneumatically operated system. The pressure differential is determined by the discharge, flow coefficient, and the fluid's specific gravity.

What is Differential Pressure?

Consider fluid flow via an aperture, a venturi, or another type of constriction with a pressure gauge on both sides. Differential pressure is defined as the pressure difference between two gauges. The differential pressure will alter if there are any obstructions or leaks in the system. It is related to the flow factor or flow coefficient, the specific gravity of the fluid, and the volumetric flow rate, mathematically:

Kv = Q √S/ΔP

ΔP = Q^2.S/ Kv^2

  • Where Kv = Flow factor
  • S = Specific gravity of the fluid
  • Q = Volumetric flow rate
  • ΔP = Differential pressure.

How do I Calculate Differential Pressure?

To find out the differential pressure, do the following:

  • Step 1: Calculate the volumetric flow rate's square.
  • Step 2: Calculate the square of the flow factor.
  • Step 3: Divide the square of the flow factor from the square of the volumetric flow rate.
  • Step 4: To get the differential pressure, multiply the result by the fluid's specific gravity.

Become familiar with plenty of similar concepts of physics along with well designed calculator tools complementing the concept on Physicscalculatorpro.com a trusted reliable portal for all your needs.

Calculating Flow Rate from Differential Pressure

To find out the differential pressure, do the following:

  • Step 1: Enter the fluid's specific gravity or choose from a list of fluids.
  • Step 2: Fill in the flow's volumetric flow rate.
  • Step 3: Put the flow factor.
  • Step 4: The differential pressure will be returned by the calculator.

You can enter the pressure difference instead of the flow rate to determine the flow rate.

Applications of Differential Pressure

Differential pressure is a method of measurement that is used in the following applications:

  • Detecting system obstructions and leaks.
  • Activating pressure switches and valves.
  • Determining optimal fluid flow system operation.
  • Respiratory flow in medical devices.
  • Measuring liquid levels and flow rates.

FAQs on Differential Pressure Calculator

1. What is differential pressure?

The differential pressure is the difference in pressure that occurs when a fluid flows through confinement such as a venturi or an orifice. The units are the same as for pressure, i.e. bars or Pa. It's a pressure measurement technique that's widely used in fluid flow systems.

2. What is the differential pressure unit?

Differential pressure is commonly expressed in pascals (International Systems of Units). A newton per meter squared is equal to a pascal.

3. What is a pump's differential pressure?

The measured difference between two pressures, such as the discharge and suction nozzles of a pump, is known as differential pressure.

4. What is a differential pressure indicator and how does it work?

The difference between two pressure locations within a process system is measured and visually indicated by a differential pressure gauge. Two inlet ports on the differential pressure gauge are connected to the pressure sites being measured.

5. What factors contribute to a low differential pressure?

As particles move through orifices and filters, differential pressure is utilized to assess if a pipeline has any obstructions or contaminants. If a section of the pipe becomes clogged, the pressure will fluctuate, causing differential pressure to rise or fall.