Difference between orificemeter and venturimeter [With PDF]

Want to know about the Difference between orificemeter and venturimeter?

Then you are on the right path. Here you will know the detailed comparison between these two devices.

So, I invite you to come with me and feel comfortable while I start the engine of this knowledgeable journey here at Engineers Rail.

So, Without further delay, Let’s dive in.

Before jumping in the title of the article, It would be nice to know about these devices briefly.

So, here we go…

What is an Orifice meter?

  • Basically, an Orifice meter is referred as a type of flow meter that uses differential pressure measurement techniques and this helps to get discharge rate as well as calculate the flow rate.
  • In short, Orifice meters is a device to measure the flow rate or discharge rate of any fluid. Oficemeter is used mainly in robust applications and an Orifice meter works based on the differential measurement technique.

Diagram of Orificemeter



What is Venturimeter?

Volumatricmeter is a discharge measuring device, it measures volumetric flow.

Here, You may ask what is volumetric flow?

So, volumetric flow is the amount of the fluid flowing or volume of fluid flowing through the media per unit of time. In short, the volume of the flowing fluid per unit of time.

Diagram of venturimeter


Hence, knowing briefly about these two measuring devices above now let’s move on to the comparison section between these two devices, keeping your purpose of landing here.

So, here it is-

Difference between orificemeter and venturimeter-

Here is the side-by-side comparison of the orifice meter and venturimeter in the table down below-

1.Generally used to measure the liquid flow rateUsed to measure the flow rate of fluids
3.Easy to installFabrication is highly technical
4.Simple ConstructionDifficult construction
5.More head lossLess head loss
6.High power lossesLess power losses
7.Highly flexibleLess flexible
8.Small in sizeLarge in size
9.Less costlyHigher cost
10.The coefficient of discharge is lowThe coefficient of discharge is high
11. Less space requiredLarge space needed
12.Less accuracyHigh accuracy
13.Pressure lossBalanced pressure
14.Orifice meter consists of double-tappingVenturi meter consists of single tapping
15.Used to increase the pressureAlso used to increase the pressure
16.5:1 Turn Down ratio 10:1 Turn Down ratio 
17.Low installation costHigh installation cost

These were the major 17 differences between the orifice meter and venturimeter which are given in the table above.

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Difference between orificemeter and venturimeter pdf-

orificemeter and venturimeter pdf



Before you go, here are some Q&A sections on this topic called ‘Difference between orifice meter and venturi meter. You should not miss this.


What is difference between venturi and orifice meter?

A Venturi meter is a flow rate measurement apparatus which has a converging and diverging section as well as a throat. Whereas, An orifice metre is a piece of equipment that measures the flow rate of liquid using an orifice plate as a flow limitation.

Which is more accurate Venturi or orifice?

Venturi is more accurate than orifice.

Where is Venturimeter used?

Venturimeter is used to measure the flow rate of the fluid.

What is the basic principle of a Venturimeter?

Venturimeter works on the principle of Bernoulli’s equation.

Which is better Venturimeter and Orificemeter?

In terms of overall flexibility, Venturimeter is the best measuring device.

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