Electromagnetic flowmeter inserted into the integrated type (without valve explosion-proof) ZA intelligent converter

Overview.

LD series electromagnetic flowmeter is composed of two parts: sensor and converter. Belongs to the velocity flow meter, it is based on Faraday's law of electromagnetic induction work, used to measure the conductivity greater than 5uS/cm conductive liquid volume flow, is an inductive instrument for measuring the volume flow of conductive media. In addition to measuring the volume flow of general conductive liquids, it can also be used to measure the volume flow of strong acids, strong alkalis and other strong corrosive liquids and mud, slurry, pulp and other uniform liquid-solid two-phase suspended liquids. Widely used in petroleum, chemical, metallurgy, light textile, paper, environmental protection, food and other industrial sectors and municipal management, water conservancy construction, river dredging and other fields of flow measurement.

◆Product implementation standard: JB/T9248-2015 (industry standard)

◆General standard of flange: GB/T9119-2010 (national standard)

                         GB/T9115.1-2010 (national standard with neck flange ≥ DN700mm)

◆Type approval certificate: 2009F384-33 2005F271-33 2007F148-33

Working principle.

According to Faraday electromagnetic induction principle, a pair of detecting electrodes are installed on the wall of the pipe perpendicular to the axis of the measuring tube and the magnetic force line, when the conductive liquid moves along the axis of the measuring tube, the conductive liquid cuts the magnetic force line to produce the induced potential, this induced potential is detected by the two detecting electrodes, the value size is proportional to the flow as

E = KBVD formula: E - induced potential: D - electrode spacing; (measuring tube diameter) B - magnetic induction strength: V - the average flow rate of conductive liquid; K - with the magnetic field distribution and axial length of the relevant coefficient.

The sensor takes the induced potential E as the flow signal, transmits it to the converter, and after amplification, conversion filter and a series of digital processing, displays the instantaneous flow rate and the accumulated flow rate by dot matrix LCD with backlight. The converter has 4~20mA output, upper and lower limit alarm output and frequency/pulse output, and is equipped with RS-485 and other communication interfaces, Hart protocol.

Features.

1. No flow blocking parts in the measuring tube, the pressure loss is zero, not easy to block.

2. As long as the reasonable choice of electrode and lining materials, you can achieve the requirements of corrosion resistance, wear resistance, temperature resistance.

3. The measurement result is basically independent of the physical parameters such as pressure, temperature, density, viscosity and conductivity of the liquid (not less than the minimum conductivity), and is not affected by the environment, so the measurement accuracy is high, stable and reliable.

4. Using modern analog signal conversion technology and high-performance super large-scale integrated chip, the signal is isolated, filtered, amplified and digitally processed. Accurate display of measurement results.

5. Automatic monitoring and correction of parameters affecting the measurement results, such as zero drift correction, and the setting and correction of segmented flow coefficients for the full range, thus expanding the measurement range, improving the degree of intelligence and measurement accuracy, and greatly improving the stability performance.

6. With the measured value of power failure protection and over-range alarm function, the flow direction of the fluid in the sensor can be set, so the sensor installation is not limited by the direction of liquid flow, and can achieve two-way flow measurement.

7. With backlight dot matrix double-row flow display, while displaying the instantaneous flow, cumulative flow, and can display the working status, parameters, measurement units, etc.

8. electromagnetic flowmeter range wide (maximum flow / minimum flow), the normal range of 20:1, generally 30:1 or greater.

9. Instrument configuration with a variety of output functions, can be used with computers, unit combination instrumentation, can complete the requirements of printing, communication and networking.

细微流量金属管浮子流量计采用变面积式丈量原理，丈量部件由一个锥型丈量管和浮球组成，适用于液态和气体的丈量，具备巩固、平稳和应用规模广的特色。细微流量金属管浮子流量计表面可水准对接或挺直对接，可选配一个或二个报警开关，广泛使用于原油、化工、钢材、食物、制药等领域中等压力的细微流量丈量和过程操纵。

进口金属管浮子流量计实际如何?进口金属管浮子流量计适用于小口径和低流速物质流量丈量;工作牢固，维护量小，寿命长。进口金属管浮子流量计自下而上的液体根据直立的丈量管时，浮子在压差的效果下升高、浮子升高的高度即代表流量的大小。塑管流量计生产厂家根据浮子里的磁瓦与指示仪里的磁瓦藕合协同传送给指示仪，股动指表盘里的指针翻转。