BAMOMATIC — electromagnetic flow meter

• Measuring range from 0.1 to 250 l/min • Pulse and analog output • No moving parts • Small footprint • High accuracy Mechanical and industrial engineering Cleaning process Liquid dosing Mobile applications, etc. The BAMOMATIC flowmeter uses the principle of electromagnetic induction to measure the flow of electrically conductive liquids (>20 μS/cm). The BAMOMATIC is perfectly suited to dosing or totalising liquids. These devices leave the test bench calibrated to ±5 pulses per 1,000 for water at 23 °C. The density, temperature and pressure of the liquid have no influence on the measurement, and the absence of moving parts means there is no mechanical wear. The operating principle is based on Faraday's law (a): in an electromagnetic flowmeter, the body of liquid sits in a magnetic field created by coils. Electrodes set in a plane perpendicular to that field and in contact with the conductive liquid measure the voltage generated. The measured voltage is directly proportional to the fluid velocity, and therefore to the flow rate when the flow area is constant. (a) Faraday's law of electromagnetism states that the voltage induced in a conductor as it moves through a magnetic field is proportional to its velocity.