Thermal Mass Flow Meter

Thermal Mass Flow Meter

In a world where science and technology keep expanding, the principles governing each area are actively being challenged day after day as well. Let’s see about the thermal mass flow meter.

These innovations often come in handy, especially when it comes to physics. In this article, we are going to look at a method of measuring gas movement using a thermal mass flow meter as one of the mostly used technologies in most industries today.


This invention is mainly linked to L. V. King, who founded the King’s Law, which measures fluid flow through mass velocity. (househummus) In the 1960s and 1970s he came up with the immersion thermal mass flow meters, and they began being used at the industrial level. (Ambien)

Where it is used

This gadget is used in the measurement of mass flow both in gas and liquids. However, it is more applicable in gases since liquids have absorption properties when it comes to heat. This may cause the readings to be untrue to some small percentage. In gases, absorption of heat is usually minimal, and therefore doing heat readings to be entirely accurate and easily detected. 

How it works.

Most of the mass flow controllers you can find combine the mass flow meter, electronics, and a valve. They at times also use a silicon-based chip that can also be used to get temperature differences. 

Basically, you introduce a low amount of heat into the flowing stream and measure the temperature change. You can also maintain a certain level of heat and keep monitoring the energy level required to maintain it at that point. 

The resistance temperature detectors (RTD) are normally used to calibrate the rise in the temperature, and the electric heater keeps on being regulated accordingly. You can mainly categorize this appliance into two; those that use the immersion technology and those that use the capillary tube technology. (ar15discounts)  

In the capillary-tube type, heat is transferred to the fluid through the small tube, while in the immersion type, heat is applied to the boundaries of the fluid and thus transferred to the rest of the fluid. 

The immersion is mostly used for large scale while the capillary tube is used for smaller measurements, mostly in small industries. They are highly preferred in industries due to their accuracy in reading, and you can use them easily since they have advanced through the years. 

Once implanted in the fluid, all you need to do is get the readings, and since they are not mobile, you won’t have to keep tacking their positioning. See this link for more

Why use this technology


Their level of accuracy is very high, and it is possible to measure temperature differences over a wide range. With such, you can be assured that the readings you are getting are reliable and are not just for a small portion of the fluid.

No moving parts

These appliances are built to be stationary, and they only measure the flow using the heat transfer passing by the resistance temperature detectors. The static nature improves their accuracy since their movement will not cause any fluctuations. Instead, every change is being brought by the shift of the fluid in which you have inserted it. 

Sensitivity to minor flow 

Most of these are formed in a way that makes them extremely sensitive even to the lowest of matter flow. As such, nothing will be omitted in quantifying. Such high sensitivity is very effective, especially when computing in gases because their fluctuations can be negligible and even unnoticeable in some instances. Such sensitivity comes in handy in moments where others cannot detect these changes. 

Operation ease

These meters are straightforward to install and even monitor. Once purchased, you can install it yourself without the need to call an expert to do it for you. Once installed, you can easily read it due to its non-complicated structure. Its operation makes it user-friendly even for upcoming industries since you will not have to hire experts to come and operate it for you. 

Pocket friendly

Once you have considered all other factors, this is a significant benefit to all involved. Use of such an appliance will rid you of the expense of using numerous others due to its effectiveness and overall range sensitivity.  

Also, by its static nature, the chances of spoiling and malfunction are significantly minimized by avoiding a lot of bumping and collision when immersed.  In return, this reduces the number of times you have to do replacements. 

Withstanding pressure variation

The science used is primarily reliant on calibrating molecules of the matter in which you have inserted it. This quality then makes it to be less sensitive or unaffected by changes in pressure. It is unlike other methods, which are highly affected by even minimal pressure changes in the fluid they are in.  Click here to read a few more advantages.


In matters concerning fluid flow, there would be no argument that this is by far one of the best innovations and effective methods of quantification brought about. You cannot go wrong when using it, from its easy use to its accuracy and, even better, its high sensitivity. 

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