All the known and industrially used the principles of continuous measurement of gas flow have limited options and reliability when it comes to gases that are contaminated with particles of mechanical and adhesive forces. For this purpose, ECM delivers flow to the reliable operation of law require the presence of particles in the measured gas. Pipe is inserted into a pair of insulated or non-insulated rod probes. Flow electronically evaluated for particle flow between the two probes due to their known mutual distance calculated instantaneous flow value.

The flow of powdered material is designed flowmeter working on the same principle, the difference is in the form of probes, where the rod in place, the probe used a circular shape.