Monitoring & Recording of Compressed Air

The power available from “Compressed Air” from Compressor can be used profitably in most engineering and industrial fields as a substitute for steam and also electricity. It saves time, cut costs eases physical burdens in various industries like Chemical, agriculture, food, construction, aviation, Pharmaceutical, ammunition, mining etc. The safety of compressed air as well as its versatility makes it a desirable form of Power for many operations.

Compressed Air is a most useful commodity because it can be stored and used whenever we require it. This is really challenging to monitor and record Compressed Air for energy management.


Rocksensor make Thermal Gas mass flow meter RF3700 for gas flowing through conduits.

Working Principle

It works on the principle of thermal dispersion and adopts the method of constant differential temperature to measure gas flow.

In a thermal mass flow meter, a part of the process fluid flows through the Shunt or bypass sensor tube, The process Fluid is heated and flow meter measures the temperature of fluid at RTDs located at upstream and down stream of the meter. 

The temperature variations between two points (upstream and downstream) are inversely proportional to mass flow rate.


Benefits to the User

Easy to install

Due to simple design structure which fits in existing pipeline without major modifications.

High Turndown Ratio

Turn down ratio 100:1 means meter accurately & repeatedly measures a substantially greater range of flow rates over other technologies.

Low-Pressure Drop 

Due to Minimal Physical obstruction in pipe.

No moving parts

No wear and tear.

High Repeatability

Application Areas:

• Pneumatic Cylinders, mixing of formulations in Pharma industries

• Spray Painting

• Glass Blowing, Medical Engineering

• Refrigeration, Nitrogen Plant, Oxygen Plant

• Pneumatic Tool cutting, machining, assembly area

• Dryers etc.

Thermal Mass Flowmeter for Compressed Air

One thought on “Thermal Mass Flowmeter for Compressed Air

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