5 Generally Known Types of Flow Meters

Types of Flow Meters

A stream meter (or flowmeter) is an instrument used to gauge direct, nonlinear, volumetric or mass flow rate of a fluid or a gas. When picking stream meters, one should think about such impalpable factors as the nature of plant workforce, their involvement with adjustment and support, save parts accessibility, and history of failure at the specific plant site. It is likewise suggested that the expense of the establishment be registered simply in the wake of making these strides. 

A standout amongst the most widely recognized stream estimation errors is the inversion of this arrangement: rather than choosing a sensor which will perform appropriately, an endeavor is made to legitimize the utilization of a gadget since it is more affordable. Those “modest” buys can be the most exorbitant establishments. This page will enable you to comprehend stream rate meters more readily, yet you can likewise address our application engineers at whenever in the event that you have any exceptional stream estimation challenges. 

Estimating a stream is basic, particularly in modern plants, where it can characterize the benefit or loss of organization. A stream meter is a gadget used to gauge stream rate (volumetric or mass) or the total amount of liquids going through a pipe. For a little help, here are the most common types of flow meters.

Positive Displacement (PD) Flow Meters 

PD stream meters measure the volume loaded up with liquid, convey it ahead and fill it once more, which ascertains the measure of the flowing liquid. It gauges the real progression of any liquid while every single other kind of stream meters calculate some other variable and translate the qualities into flow rate. In positive displacement stream meters, the yield is straightforwardly identified with the volume going through the stream meter. Positive displacement stream meters incorporate cylinder meters, oval gear meters, nutating plate meters, rotating vane type meters, and so on. 

PD stream meters are known for their exactness. They are normally utilized in the exchange of oils and liquids, similar to fuel, pressure driven liquids just as in-home use for water and gas applications. 

Differential Pressure (DP) Flow Meters 

Differential weight stream meters measure the differential weight over an opening where the stream is legitimately identified with the square foundation of the differential weight delivered. There are additionally essential and auxiliary components in differential stream meters. The critical component produces a change in active vitality utilizing either stream spout, pitot tube, opening plate, or venturi stream meters. The other component estimates the differential weight and gives the sign. 

Differential weight meters speak to around 1/5 of all stream meters far and wide. They are regularly utilized in the oil and gas industry, alongside HVAC, water, beverage, pharmaceutical, mining, paper and concoction applications. 

Mass Flow Meters 

Mass stream meters are increasingly compelling in mass related procedures as they measure the power that results from the mass’s acceleration or speed. All the more explicitly, the power is estimated as the mass moving per unit of time, rather than the volume per unit of time. Mass stream meters incorporate Coriolis mass meters and warm scattering meters. 

Average applications for mass stream meters are attached to substance forms. Notwithstanding the synthetic and gas enterprises, run of the mill ventures utilizing mass meters incorporate pharma, power, mining, and wastewater.

Velocity Flow Meters 

This kind of flow meter measures the speed of the stream to ascertain the volumetric flow rate. These are less delicate when the Reynolds number of liquid is higher than 10000. Velocity stream meters incorporate turbine, paddlewheel, vortex shedding, electromagnetic and sonic/ultrasonic stream meters. 

Open Channel Flow Meters 

Estimation of fluid in open channels incorporate weirs, v-indent, and flumes. These somewhat dam-like structures, or floods, consider a restricted or focused free-progression of fluids dependent on the unique shape and size of the structure. This sort of stream meter takes into account a perusing of the flow rate to be determined.

Purpose of Flow Meters

A stream meter is utilized in various kinds of uses to quantify the volumetric flow rate or mass flow rate. The particular application characterizes the sort and limit of the stream meter. Liquids, gases, and fluids are estimated as far as volumetric flow rate and mass flow rate. Both are identified with material’s thickness with volumetric flow rate signified by Q and mass flow rate by ṁ in the condition ṁ=Q x ρ.


Flow measurement is quintessential and crucial, most specifically in industrial plants, where it can, for the most part, determine and delineate the loss or profit of an organization. In a nutshell, flow meters are devices utilized to calculate the mass flow rate or volumetric flow rate, or the amount of liquid traversing through a pipeline. There are plenty of types of flow meters relying upon the application, the construction and the particular fluid, which includes the flow meter’s materials. You can search online, for example, flow meters from smartmeasurement, to look for high-quality devices. 

Author’s Bio:

Sylvia Hopkins is a writer and a blogger who specializes in email marketing campaigns and ghost blogging. She writes about flow measurement instrumentation, flow measurement application, and technology. When not working, Sylvia spends some quality time with her family and friends.