Electromagnetic jat-flow flowmeter

Abstract

The invention discloses an electromagnetic jet flow flowmeter. It discloses a resist flow piece installs in the measuring tube of the jet flow flowmeter and a U type electromagnetism structure installs on the measuring tube, the first electrode, the second electrode, the third electrode installs on the measuring tube and resist flow side of the inferior of the U type electromagnetism structure. The U electromagnetism structure is composed by pair of permanent magnet and an exciting coil, controls by monolithic integrated circuit to strengthen or weaken the measuring tube magnetic field. The second electrode connects the grounding of the difference enlarge electric circuit by the wire, the first electrode, the third electrode connect the difference enlarge electric circuit input end by the wire, the difference enlarge electric circuit out-port connect the comparator electric circuit, the monolithic integrated circuit electric circuit in turn. The monolithic integrated circuit electric circuit also provides LCD monitor, pressed key input and so on electric circuit. The entire electric circuit uses a battery power supply. The merit of jet flow flowmeter is that the low power loss, the wide measuring range, the high exempt maintenance, reliable, high accuracy and so on.

Description

technical field [0001] The invention relates to a flow meter, in particular to an electromagnetic jet flow meter. Background technique [0002] Flow measurement is an important scientific measurement content, and water measurement is one of the most important contents. It plays an important role in trade settlement, energy measurement, process control, and environmental protection. In recent years, with the global shortage of energy and water resources and the start of key projects such as the South-to-North Water Diversion Project, the whole society has higher and higher requirements for water metering. At present, water metering instruments mainly include ordinary mechanical water meters and flow meters, and mechanical water meters and flow meters have their own characteristics. Mechanical water meters are widely used at home and abroad for their simple structure, stable measurement and low price. However, due to factors such as transmission resistance and mechanical mov...

AI Technical Summary

Problems solved by technology

If we use a permanent magnet with a strong magnetic field, there will be a defect: the magnet is easy to absorb impurities such as rust in water

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