Electromagnetic flowmeter flange integrated ZE 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.

靶式流量计适用于沥青的测量吗?金属管浮子流量计公司解答：沥青是由不同分子量的氮氧化合物以及非金属化合物构成的深褐色繁杂混合物，呈液体，是一种防水防潮和防腐的有机普通混凝土。用以涂料、塑胶、橡胶等工业及其摊铺地面等，用途广泛。因而，对沥青流量测量，不但在沥青加工过程还是用途应用过程，对沥青流量的计量是必要的。

沥青关键分成改性沥青、乳化沥青、原油沥青等，该类介质特点是黏度高、易凝固、流速慢等特性，类似的介质有中温煤焦油、液体石蜡、液体硫磺、橡胶乳等高温下为液态，常温为固态。生产线如果维修一段时间，分体型玻璃浮子流量计介质容易凝固在管道内而影响生产进度。因而流体管路一般都必须选用蒸气或导热油保温。沥青属于高粘度易凝固的流体，因而流体管路必须蒸气或导热油保温。