Thermal conductivity mass flowmeter | What is a thermal mass flowmeter? Pay attention to the principle and advantages and disadvantages of thermal mass flow meters

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What is the working principle of a thermal gas mass flowmeter?? The WTG-RS thermal gas mass flowmeter adopts the principle of thermal conductivity. The instrument measures the gas mass flow rate in standard units without temperature and pressure compensation, and can also measure the process gas temperature. Multiple measurement units can be selected on-site (scfm, sfpm, nm3/h, etc.). Provide two 4-20mA channels for instantaneous flow and temperature, as well as flow and pulse output. The optional display/keyboard module can display instantaneous and cumulative flow, working time, temperature, and alarm points. It allows users to set full-scale, pipeline area, alarm points, low flow zero switching, pulse output frequency, delay, etc. on-site. RS485 interface, equipped with protocols including Modbus, Profibus DP, Devicenet, and Ethernet. Make the instrument enter the field bus instrument category. This series of flow meters comes in two types: plug-in and tube type. The plug-in sensor has a probe with a diameter of 1/2 "and a maximum length of 36" (914mm) (longer tracking dust sensors can also be manufactured); There are measuring tubes with measuring tube sensors ranging from 1/4 to 6 "(6.25mm to 152mm), equipped with built-in flow regulators to eliminate the need for long straight pipe sections upstream and downstream. The pipeline connection can be flange, NPT thread, or welded. The material is 316 stainless steel, Hastelloy C alloy or other materials. Thermal diffusion technology is a technology that performs well and has high reliability under harsh conditions. Its typical sensing elements include two thermal resistors (platinum RTDs). When these two RTDs are placed in a fluid, one is heated and the other is used to sense the process temperature. The temperature difference between two RTDs is related to the process flow rate and the properties of the process medium. If the temperature difference is kept constant, the energy of the electronic unit heating the RTD is a function of the mass flow rate. Answerer: Song Pinglong 2013-11-8 Related Q&A: What is the principle and selection of acceleration sensors?? ·What is the current application status and development trend of automotive sensors to convert the measured non electric quantity changes into capacitance changes?? ·What is the measurement principle of intelligent electromagnetic flowmeter?? ·Introduction to viscosity meter?? ·Exploring the Application of Multi transmission Delay Sensor Information Fusion Technology in Improving Orifice Plate Measurement and Analyzing the Working Principle of Portable Ultrasonic Flowmeters? ·Request maintenance and repair procedures for electromagnetic flow meters? ·What are the principles and applications of ultrasonic sensors? ·What are the principles and applications of laser sensors? ·Are you looking for an infrared temperature sensor? ·What are the classification, selection, and measurement principles of torque sensors? How to connect an Arduino to an ultrasonic sensor? ·What is the working principle of torque transmission and electromagnetic flowmeter in the digital test station for doubly fed wind turbines? ·What is the principle of torque measurement method? ·What is the principle and circuit of PT100 measurement for water level and temperature sensing of solar water heater controller? ·Are you looking for fiber optic sensors for oil logging? ·What are the installation requirements for electromagnetic flow meters?

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