Products
M+W Instruments GmbH

The MASS-STREAM® brand stands for reliable, very robust product lines of thermal mass flow meters and controllers for gases of M+W Instruments and our proven experience for years.

The instruments can be used for almost all possible gases and gas mixtures in a variety of applications in which gas flows are measured and controlled, such as in industry, in process technology or laboratory equipment. The compact design and sophisticated modular system allow an attractive price-performance ratio.

The product range of M+W Instruments covers digital and analog measuring devices in three different series:

  • The new digital series MASS-STREAM ® D-6300 operates on the direct through-flow measurement principle, also called inline-sensor measuring principle, for mass flow ranges from 0.2 ln/min Air (full scale range) up to 5000 ln/min Air (full scale range).


  • The analog series MASS-STREAM ® D-6200 also operates on the direct through-flow measurement principle for mass flow ranges of 10 ln/min air (full scale range) up to 6000 ln/min air (full scale range).


  • The analog series MASS-STREAM ® D-5100 works on the bypass principle for smaller mass flow ranges of 0.1 ln/min air (full scale range) up to 50 ln/min air (full scale range).

All our MASS-STREAM® mass flow meters and controllers work without any moving parts in the metering chamber with relatively small pressure losses. As they apply the mass flow principle, it is unnecessary to compensate for variations in the working conditions like pressure or temperature. This is in contrast, for example, to piston prover measuring instruments that operate with a volumetric measuring principle where any alteration in pressure or temperature may cause measuring faults.

In addition to our standard configurations we also offer a variety of options for our mass flow meters and controllers.