Turbine flowmeter clamp-on liquid turbine intelligent meter head (DN4-200)

Overview.

LWY, LWQ series turbine flowmeter is based on the principle of torque balance and is a velocity type flow meter. The sensor has a simple structure, lightweight, high accuracy, good repeatability, responsive, easy to install and maintain the use of features, widely used in petroleum, chemical, gold, water supply, paper and other industries, is the ideal instrument for flow measurement and energy saving.

Sensor and display meter supporting the use, suitable for measuring closed pipeline with stainless steel 0Cr18Ni9, 2CrI3, hard alloy does not corrode, and no fibers, particles and other impurities of the liquid. If matched with display instruments with special functions, it can also be used for quantitative control, over-volume alarm, etc. The optional explosion-proof type of this product is ExdIICT6Gb, which can be used in explosive hazardous environment.

The sensor is suitable for the medium whose viscosity is less than 5×10＾-6m＾2/s at working temperature. For the liquid whose viscosity is greater than 5×10＾-6m＾2/s, the sensor should be calibrated for real liquid and then used.

◆Product implementation standard: JB/T9246-2016 (industry standard)

◆General standard of flange: GB/T9113.1-2010 (national standard)

◆Type approval certificate: 2016F648-33

Working principle.

Fluid flow through the sensor shell, due to the impeller blade and flow direction has a certain angle, the impulse of the fluid so that the blade has a rotational moment, after overcoming the friction torque and fluid resistance blade rotation, in the torque balance after the speed is stable, under certain conditions, the speed is proportional to the flow rate, because the blade has a magnetic conductivity, it is in the magnetic field of the signal detector (composed of persistent magnets and coils), the rotating blade cutting Magnetic lines of force, periodically changing the magnetic flux of the coil, so that both ends of the coil induction out of the electrical pulse signal, this signal through the amplifier amplification and shaping, the formation of a certain amplitude of continuous rectangular pulse wave, can be transmitted to the display meter, showing the instantaneous flow of fluid or total. In a certain flow range, the pulse frequency is proportional to the fluid flowing through the sensor (instantaneous flow rate Q), and the flow rate calculation formula is as follows:

Features.

1. The sensor is carbide bearing thrust type, which not only ensures the accuracy and wear resistance, but also has the characteristics of simple structure, firmness and easy disassembly and installation.

2. A variety of meter head forms: 3-wire pulse output; 2-wire 4~20mA current output; field display and output 4~20mA; battery power supply, etc., suitable for different use occasions.

3. Intelligent processing: the meter coefficient can be multi-point non-linear correction to ensure the full range of high precision.

4. Instrument coefficients, cumulative flow value and other parameters of the power-down hold, ten years without loss.

选择旋进旋涡流量计规格(规格)不一定与工艺管道相同，应视测量流量范围是否，在流速范围内确定，即当管路流速稍低，无法满足仪表仪器规定时或是在此流速下测量准确度不能确保时，必须缩小仪表口径，进而提升管中流速，获得满意测量结果。如何进行氧化锆氧量分析仪校准及基本参数锅炉燃烧情况下，氧量的转变直接关系着燃料的燃烧效果，准确的氧量数值决定着燃料的利用率和节能环保效果。

控制炉内氧量，电磁流量计生产需确保燃料充分燃烧是锅炉燃烧运行时一大重要环节。锅炉氧量数值在每个风机和加料量的一同功效下保持稳定合理数值，使燃料使用率达到较大，是每个锅炉项目组一同面对的课题。因此，一组平稳的氧量参照数值直接决定着锅炉燃烧效果的好坏。