Flow Meter vs Flow Transmitter: Know the Difference

Brian Craig

November 23, 2020

In the fluid transmission system, several types of devices are used to measure and control the process parameters. The flow meter and the flow transmitter are two important devices used in such systems. For some reason, these two devices are often considered the same. Sometimes their functions are interchanged. However, in reality, both these devices and their functions are quite different than each other. This post introduces the flow meters and the flow transmitters individually and helps you to understand the difference between these devices.

Let us discuss both flow meter and flow transmitters individually to you understand their concepts thoroughly.
flow meter vs floe transmitter

A Brief Introduction to Flow Meter

A flow meter is an instrument designed for measuring the rate of fluid flow via a fluid transmission system. It measures the flow rate of a fluid, liquid, or gas when it passes through a confined transmission system. There are different types of flow meters like orifice meters, venturimeters, rotameters, flow nozzles, etc. These different flow meters have different functioning principles. For example, an orifice meter calculates the flow of fluid at the entrance cross-section of a narrow, restricted opening called orifice and at the exit cross-section of the same. On the other hand, a rotameter type of flow meter that measures the volumetric flow rate inside multiple tubes placed at different areas of the transmission pipe.

What is a Flow Transmitter and How it Works?

A flow transmitter is an upgraded version of the flow meter. It is a flow meter with an integrated electronic circuit as an operational system. In the flow transmitter, the activity of flow rate measurement is performed by the electronic circuit on receiving the commands from the operator. Since the flow transmitters feature an electronic circuit, it is possible to control and monitor the fluid flow using these devices. 

Differences between the Flow Meter and Flow Transmitter

The following are a few significant differences between flow transmitters and flow meters.

  • The flow meters’ are designed to measure the flow rate. On the other hand, the flow transmitters not only measure the flow rate but also help in controlling and monitoring it.
  • The flow meters are standard mechanical systems like orifices, venturimeters, etc. The flow transmitters on other hand feature a mechanical body and electronic functioning circuitry.
  • The flow meters are designed for manual, on-field applications, however, the flow transmitters can be remotely operated.

Now that the differences between the flow transmitters and flow meters are known, you can select the suitable one for you. Certainly, flow transmitters can be helpful in measuring, monitoring, and controlling the flow rate if your application requires it all. However, the quality of the products can make a huge impact on your application, so you must buy from trusted manufacturers or suppliers like The Transmitter Shop. The company provides new surplus and factory new flow transmitters & meters like Rosemount flow transmitters, Foxboro flow transmitters, Rosemount vortex flow meters and so on.

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