Max. measurement error3 % o.r. 4 % o.r. 5 % o.f.s. (depending on chosen option of ordering feature "Calibration flow")
Measuring range0.5 to 910 kg/h (1.1 to 2002 lb/h) 0.5 to 1365 kg/h (1.1 to 3003 lb/h) (for air, depending on chosen option of ordering feature "Calibration flow")
Medium temperature range–40 to +100 °C (–40 to +212 °F)
Medium temperature range-20...+85°C (-4...+185°F) CIP able to 130°C / 266°F
Max. process pressure100 bar (1.740 psi)
Thermal mass flowmeters
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Whenever high turndown or low pressure losses are important in gas metering applications in any industry, thermal mass flowmeters offer a real alternative to traditional measuring techniques – whether for process control, consumption and supply monitoring, detecting leaks or monitoring distribution networks. Using insertion versions, it is also possible to measure gas flows in very large pipelines or in rectangular ducts.
The thermal measuring principle is widespread in industry and is being used successfully in many applications with gas flow, for example:
Compressed air (consumption, distribution)
Carbon dioxide (for beverage production and chilling)
Argon (in steel production)
Nitrogen and oxygen (production)
Natural gas (for burners and boiler feed control)
Air and biogas measurement (e.g. in wastewater plants)
The Thermal Flow Measuring Principle
Thermal flow measuring principle
This measuring principle is based on the fact that heat is drawn from a heated body when a fluid flows past.
A thermal flowmeter contains two PT100 temperature sensors for this purpose. One sensor measures the current fluid temperature as a reference. The second sensor is heated and has a constant temperature differential relative to the first sensor at “zero flow.”
As soon as the fluid begins to flow in the measuring tube, the heated temperature sensor cools off due to the fluid flowing past – the higher the flow velocity, the greater the cooling effect. The electric current required to maintain the temperature differential is thus a direct measure of mass flow.
Benefits
Multivariable – direct measurement and display of mass flow and fluid temperature
No pressure or temperature compensation required
High turndown (100:1)
Excellent low-end sensitivity
Quick reaction to fluctuations in flow
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Flow measuring technologies for liquids, gases and steam
Products and services of our flow measuring technologies for liquids, gases and steam at a glance
Proline in industries - the ideal device for each industry
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%20with%20flange%20connection%20-%20PP01.jpg "Proline t-mass F 300 – Inline version with flange connection")
%20Inline%20version%20with%20flange%20connection%20(remote%20version)%20-%20PP01.jpg "Proline t-mass F 500 – Inline version with flange connection")
%20Insertion%20version%20-%20PP01.jpg "Proline t-mass I 300 – Insertion version for pipes/ducts up to DN 1500 (60\")")
%20Insertion%20version%20-%20PP01.jpg "Proline t-mass I 500 – Insertion version made of stainless steel for pipes/ducts up to DN 1500 (60\")")
