• Frehnig Micromatic Engineers

Flow Meters & Sensors

Frehnig Instruments and Controls offers flow meters and sensors, PDLC Series. These take care of all flow measurement and monitoring needs with maximum efficiency. The system comprises of a paddle wheel sensor, digital flow meter and sensor installation fittings. Principle of operation: the most commonly employed measurement principle is to measure the liquids velocity and the pipe area flow rate ? velocity x area. The Frehnig paddle wheel flow sensor, works on this simple but accurate principle. Four blades spin past a sensor in the housing body. As the fluid flow causes the rotor to rotate, a signal is produced proportional to the flow rate. The design of the rotor ensures a linear repeatable output up to a flow velocity of 7 m/sec with an accuracy of ?0.06 m/s. The signal is fed to the fully digital, user programmable flow meter for a digital display of flow rate and totalised flow. The PDLC 4080B can be used for batching applications. The RS 232 communication for PC interface is a standard feature in all Frehnig flowmeters. Applications: reverse osmosis and water treatment; resource auditing systems; cooling water monitoring; municipal water auditing; distribution for commercial facilities; borewell water monitoring; and HVAC. Features: linear and accurate; cost effective; user programmable; rate indicator, totaliser and batcher functions; computer interface ? electronic datalogging; and easy maintenance.