Threaded electromagnetic flow meter in engineering plastic with IO-Link

Electromagnetic instrument for measuring and monitoring small to medium flows of electrically conductive liquids in pipelines. With no moving parts, the reading is unaffected by the density, viscosity or temperature of the medium. The sensor can be supplied with a switching, frequency or analogue output, or with compact electronics offering a counter or batching function.

Features

• Measuring ranges from 0.01…0.5 l/min up to 35…700 l/min
• Male threaded connections from G ½ to G 2 ¾
• Wetted parts in polyphenylene sulphide/stainless steel, PVDF/Hastelloy® or tantalum
• Maximum pressure 10 bar, maximum temperature 80 °C
• Accuracy ±2 % of full scale
• Optional electronics with IO-Link, integrated PT1000, rotatable TFT display, bidirectional measurement and grand, part and resettable totalisers, operable with gloves
• Batching electronics with analogue output and two relays for simple filling tasks

Operating principle

The sensor is based on Faraday's law: a conductive liquid flowing through a magnetic field generates a voltage proportional to the flow velocity. Two electrodes in contact with the medium pick up the signal and pass it to the amplifier, which calculates the volumetric flow from the pipe cross-section. The medium must have a minimum conductivity.

Applications

Monitoring and totalising water and conductive liquids in process lines. With the counter electronics the display shows the current flow rate on the first line and the part or total volume on the second; the batching electronics handle filling operations while measuring flow rate, total volume and batch volume.