Turbine flowmeter threaded liquid turbine intelligent meter head (DN4-10)

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.

当待测器皿里的液位调节时，涡轮流量计型号核心管里的浮子也随着调节，浮子内的长期磁瓦根据磁耦合传送到现场指示仪，驱动白红翻柱转180°，当液位上升，翻柱由白色转为红色，当液位下降时翻柱由红色转为白色，指示仪的红、白界位于为容器内物质液位的具体高度，进而完成液位的标示。磁翻板液位计选型时应考虑哪些因素？

1、测量目标，如待测物质的物理和化学特性，及其工作压力和温度、安装标准、液位转变的速率等。

2、测量和控制要求，如测量范畴、测量（或控制）zhun确度、动态显示、现场标示、长距离标示、与计算机的接口、安全防腐、稳定性及施工便捷性。

3、电磁流量计规格还要考虑到磁性材料的去磁难题，去磁造成液位计不能正常工作，测量结果也可能不准。