FMD-B Constant Velocity Tube Bar Flowmeter

Differential Pressure Flow Meter is also called DP flow meter. Differential pressure flow meters use the principle of differential pressure to measure the flow of liquid, gas and steam. It can measure the flow of gas, steam, liquid and natural gas. It is widely used in petroleum, chemical industry, metallurgy, electric power, heating, water supply and other fields. process control and measurement.

The differential pressure flow meter is measured by the working principle that there is a certain relationship between the pressure difference and the flow rate when the medium fluid flows through the throttling device. Differential pressure (DP) flow meters are the most widely used form of flow measurement products today. Differential pressure flow meters have their own characteristics in different fields of use.

Parameter :

Nominal diameter




Working temperature


Nominal pressure

PN≤4.0MPa, PN≤25MPa


1.0(liquid), 1.5(steam)

Measuring media

liquid, gas, steam

Connection method

thread, flange, direct welding

Flange material

Carbon steel, stainless steel or others

Flange standard

ANSI American standard, DIN European standard

Sensor type

normal type, ball valve type, online plug-in type

Signal output

analog 4~20mADC+hart signal, RS485

Sensor structure

split structure, integrated structure

Explosion proof grade flameproof ExdIIBT5Gb; Intrinsic safety ExiallCT4/T5/T6Ga;

Installation method

single-ended fixation, double-ended fixation

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