Product description

      UUV-20 series electromagnetic flowmeter consists of two parts: sensor and converter. It works based on Faraday's law of electromagnetic induction and is used to measure the volume flow of conductive liquids. It is a speed meter. In addition to measuring the volume flow of general conductive liquids, it can also be used to measure the volume flow of strong corrosive liquids such as strong acids and alkalis and uniform liquid-solid two-phase suspension liquids such as mud, mineral pulp, and paper pulp. It is widely used in the flow measurement of petroleum, chemical industry, metallurgy, textile, papermaking, environmental protection, food and other industrial departments and municipal management, water conservancy construction, river dredging and other fields.

Features

With positive/reverse two-way flow measurement function

Provide sensor multi-stage nonlinear correction and sensor zero point correction and automatic zero calibration project

All Chinese (English) friendly interface, simple and clear operation

Multi-level password management, multiple limit alarm parameter setting functions

Possess the self-check function of the converter

Adopting integrated and separated combined design, dual coefficient setting of converter and sensor, so that the converter is replaceable

Multiple output interfaces are available: active or passive frequency output and cumulative pulse output, 4-20mA output, contact output, HART, RS485 communication protocol to choose from

Working principle

According to the principle of Faraday electromagnetic induction, a pair of detection electrodes are installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic line of force. When the conductive liquid moves along the axis of the measuring tube, the conductive liquid cuts the magnetic line of force to generate an induced electric potential. This induced electric potential consists of two The detection electrode detects that the value is proportional to the flow rate,

Its value is: E=B.V.D.K

Where:

E-induced electric potential;

K-coefficient related to magnetic field distribution and axial length;

B-Magnetic induction intensity;

V－The average flow velocity of conductive liquid;

D－The distance between electrodes; (the inner diameter of the measuring tube)

       The sensor uses the induced potential E as a flow signal and transmits it to the converter. After signal processing such as amplification, conversion and filtering, the instantaneous flow and cumulative flow are displayed by a dot matrix liquid crystal with backlight. The converter has 4-20mA output, alarm output and frequency output, and is equipped with communication interfaces such as RS-485, and supports HART and MODBUS protocols.

Main technical parameters