LF420

Sanitary electromagnetic flowmeter LF490/LF400 or LF490/LF420 is designed for applications handling food and beverages. Sanitary flowmeters must be structured in such a way that operation and handling is simple, easy and thorough for the purpose of sanitary control such as cleaning, sterilization and drying. The sanitary flowmeter has features provided with normal electromagnetic flowmeters and by using sanitary fittings for pipeline connections fluid does not remain in any place along the detector pipeline. Thus, it is fit for flowrate measurement for food and beverages. The electromagnetic flowmeter uses Faraday's Law of electromagnetic induction to measure the process flow. The device consists of two units: a detector, through which the fluid to be measured flows and in which lowlevel signals proportional to flow rates are obtained; and a converter, which supplies excitation current to the detector, and amplifies the signals from the detector and then processes and converts the signals into the 420 mA dc current signal. The LF490/LF400 is a detector-converter combined type and the LF490/LF420 is a flowmeter with its detector LF490 and converter LF420 separately mounted. The LF490 detector can also be used with a separate type converter Model LF230, which provides high performance such as Digital Inputs (two points) along with Digital Outputs (four points), and multi-functions. The LF490 is approved for 3A standard and its teflon PFA lining conforms FDA requirement.

The LF420 hand-held terminal or Model 275 HART communicator can be used to communicate with the flowmeter from remote places. See the following page for the HART protocol specifications.