Thermal dispersion gas flowmeter

The Proline t-mass 65 thermal dispersion flowmeter provides a direct measurement of gas mass flow and temperature.

The t-mass 65 is capable of handling a wide variety of gas types and can be used in numerous applications such as measuring mass flow rates of natural gas to boilers and dryers; carbon dioxide flow in breweries; biogas and aeration air in wastewater plants; gas production; leakage detection; and air compressor efficiency. The gas to be measured can be made up of a single pure gas or a mixture of up to eight different components, selectable from the onboard database. The measurable gases are air, ammonia, argon, butane, carbon dioxide, carbon monoxide, chlorine, ethane, ethylene, helium 4, hydrogen, hydrogen chloride, hydrogen sulfide, krypton, methane, neon, nitrogen, oxygen, propane and xenon.

The t-mass 65 includes gas-specific temperature compensation, 4–20 mA galvanically isolated combined current, pulse outputs, as well as Profibus DP and Modbus interfaces.

The flanged version, Proline t-mass 65F, is suitable for pipe diameters DN15 to DN100, process temperatures -40 to +100 °C and medium pressures -0.5 to 40 bar. It has an accuracy of ±1.5% of reading for 100 to 20% of full scale and ±0.3% of reading for 20 to 1% of full scale and a repeatability of 0.5% for flow velocities above 0.2 m/s.

An insertion version, Proline t-mass 65I, is also available with insertion lengths from 235 to 608 mm. It is suitable for temperatures from -40 to +130 °C, pressures from -0.5 to 20 bar and has the same accuracy and repeatability as the flanged version.