These differential pressure flow-meters are used for monitoring gas and liquids.

The device works according to the principle of differential pressure which is proportional to the square of the volume rate of flow through the pipeline. The DDM series integrates an orifice plate inside an armature for wafer mounting or with threaded fittings.
The transmitter EM contains a diaphragm system. The differential pressure generates a force which moves the diaphragm system against the measuring spring. The resulting movement is transmitted to the inductive transducer via a piston. The electronics convert the signal into a direct display, switching contact and output signal.

The reliability of the measurement depends of the flow behaviour at the measuring point. The region of steady flow should covers piping distances of 6 ND upstream and 4 ND downstream.

Several versions in steel, stainless steel or brass are available:

DDM-DN Wafer for flanges acc. DIN EN 1092-1
DDM-Gi Female threads acc. DIN EN ISO 228
DDM-Ga Male threads acc. DIN EN ISO 228
DDM-Rp Unions DIN EN 10226-1 (ISO 7-1)

• Every BAMO Kirchner instrument is tested in conformity with EC directives.
• The corresponding declaration of conformity is available on request.
• The current version in force is available on our WEB site.
• Our production center Kirchner, is certified DIN EN ISO 9001: 2015