MASS-STREAM™ instruments operate on the basis of direct through-flow measurement in accordance with the constant temperature anemometer principle. They contain no moving parts and the measured gases pass the two stainless steel sensor probes directly, without bypass. As a result, the gases are entirely unhindered on their flow path, making the series particularly suitable for applications with low-pressure loss, as well as being less sensitive to moisture and particulate contamination. The electronics casing has a robust design with an IP65 level of protection. On the new D-6390 model, the maximum measuring range has been expanded to 10,000 ln/min air equivalent. Analogue I/O signals, as well as an RS232 interface, are provided by default. Typical applications include gas consumption measurements, aeration and purging processes or natural gas/biogas applications.
