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Theoretical knowledge of the new generation of intelligent target flowmeter
2012-3-9 9:06:57

Theoretical knowledge of the new generation of intelligent target flowmeter
于六十年代开始应用于工业流量测量,主要用于解决高粘度、低雷诺数流体的流量测量,先后经历了气动表和电动表两大发展阶段,SK-BSL系列智能靶式流量计是在原有应变片式靶式流量计测量原理的基础上,采用了最新型电容力传感器作为测量和敏感传递元件,同时利用了现代数字智能处理技术而研制的一种新式流量计量仪表。 SK-BSL series target flowmeters have been used in industrial flow measurement since the 1960s. They are mainly used to solve the flow measurement of high viscosity and low Reynolds number fluids. They have experienced two development stages, pneumatic and electric meters. SK-BSL The series of intelligent target type flowmeter is based on the original measuring principle of the strain gauge target type flowmeter, and adopts the latest type of capacitive force sensor as a measurement and sensitive transmission element, and a new type of technology developed by using modern digital intelligent processing technology. Flow meter. 原有的技术优势,同时又具有与容积式流量计相媲美的测量准确度,加之其特有的抗干扰、抗杂质性能,除能替代常规流量所能测量的流量计量问题,尤其在小流量、高粘度、易凝易堵、高温、低温、强腐蚀、强震动等流量计量困难的工况中具有很好的适应性。 Capacitive force sensors are the key to the true realization of high precision and high stability of this new product, which has completely changed the temperature drift of the strain gauge target flowmeter, the ability to resist overload (shock), and the existence of static sealing points. All kinds of defects not only make use of the original technical advantages of the target type flowmeter , but also have a measurement accuracy comparable to the volumetric flowmeter. In addition, its unique anti-interference and anti-impurity performance, in addition to replacing the conventional flow rate can be measured It has a good adaptability to flow measurement problems, especially in difficult flow measurement conditions such as small flow, high viscosity, easy to set and block, high temperature, low temperature, strong corrosion, and strong vibration. Has been widely used in metallurgy, petroleum, chemical, energy, food, environmental protection and other fields of flow measurement.

,集流量、温度、压力检测功能于一体,采用先进的单片机技术和电容式压力传感器,产品无可动部件,抗振动、抗杂质、抗干扰能力强;具有操作简单,安装容易,免维护,故障自检,运行费用低等一系列特点。 The new generation of intelligent target type flowmeter integrates flow, temperature and pressure detection functions. It adopts advanced single-chip microcomputer technology and capacitive pressure sensor. The product has no moving parts, and has strong anti-vibration, anti-impurity and anti-interference capabilities. It has simple operation. , Easy to install, maintenance-free, fault self-test, low operating costs and other features. It has been widely used in the measurement of semi-water gas, coke oven gas, heavy oil, residual oil, asphalt, liquid paraffin, toluene, sulfuric acid, natural gas, methane chloride, flue gas, chlorine gas, sewage, purified water, and other special media. Solve the difficult flow measurement in the industry for many years. Working principle: When the medium flows in the measuring tube, due to its own kinetic energy and pressure difference between the target plate, the force on the target plate is generated, causing the target plate to generate a small amount of displacement. The square is proportional to the force transmitted by the target plate through the target rod, which causes a slight change in the sensor's elastomer, thereby breaking the bridge balance composed of the chip capacitor. Generate a voltage signal corresponding to the force of the flow on the target: the flow is proportional to the square of the voltage generated by the bridge due to the characteristics of the flow of the fluid.

Features:

The whole instrument of the intelligent target type flowmeter has no moving parts in the design, and the plug-in structure is convenient for disassembly;

Can choose a variety of anti-corrosion and high and low temperature resistant materials (such as Hastelloy, titanium, etc.);

The whole machine can be made fully sealed without dead corners (welded form), without any leakage points, and can withstand 42MPa high pressure;

Self-checking procedures are set up in the table, and the failure phenomenon is clear at a glance;

The sensor is not in contact with the measured medium, there is no component wear, and it is safe and reliable to use;

The dry calibration method can be used in situ, that is, the weight hanging method is adopted. One-button operation can complete the calibration;

Selectable small signal removal, non-linear correction, filtering time can be selected;

Integrated temperature and pressure compensation, direct output quality or standard square;

There are multiple installation methods to choose from, such as online plug-in, low installation costs;

It can accurately measure the gas and liquid flow under various normal temperature, high temperature 500 degrees, and low temperature -200 degrees;

Accurate measurement, accuracy can reach 0.2%;

Good repeatability, generally 0.05 ~ 0.08%, fast measurement;

Low pressure loss, only about 1/2 △ P of standard orifice plate;

Strong anti-interference and anti-impurity ability;

The flow blocking range (target) can be changed according to actual needs to change the flow range;

Low-power battery on-site display, can directly read the displayed value online, and the display can simultaneously read the instantaneous and cumulative flow and percentage bar graph

Simple and convenient installation and extremely easy maintenance;

Multiple output formats, can transmit various parameters remotely;

Strong vibration resistance, pulsating flow can be measured within a certain range;