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What are the functions of a vortex flowmeter with temperature and pressure compensation?
The vortex flowmeter with temperature and pressure compensation function mainly has the following functions
1. Flow measurement: The vortex flowmeter is mainly used to measure the flow of liquids or gases. The vortex flowmeter with temperature and pressure compensation function can measure the flow more accurately by measuring and correcting parameters such as temperature and pressure
Measure the pressure in the pipeline for pressure compensation to eliminate the impact of pressure on flow measurement and improve measurement accuracy Multiple output signals: The vortex flowmeter can provide multiple output signals according to user needs, such as 4-20mA analog signals, RS485 digital signals, etc., making it easy to connect to various control systems and computers.
2. Why do flow meters need temperature and pressure compensation?
1、 Why do flow meters need temperature and pressure compensation: Most popular flow meters on the market measure volumetric flow rates, such as orifice plates, Venturi valves, vortex streets, turbines, electromagnetic sensors, etc. The units generally include cubic meters per hour: M3/h, liters per minute: L/min, etc. However, the data we want is often tons per hour: T/h, kilograms per minute: Kg/min, because measuring volumetric flow is relatively easy and cost-effective, compared to directly measuring mass flow. We know that quality flow meters are expensive, so most flow meters measure volumetric flow rates. For general situations, such as the internal assessment of Cheyan Huahong, the accuracy requirements for material flow rate are not so strict, and only di
2、 How to perform temperature and pressure compensation: For liquids, fluctuations in temperature and pressure have a relatively small impact on density, and unless there are particularly high requirements, temperature and pressure compensation is generally not performed. The density of gas varies greatly with temperature and pressure, so temperature and pressure compensation is necessary. There are two main ways of temperature and pressure compensation. One is the flow meter of the temperature and pressure compensation integrated machine, and the other is to install temperature sensors and pressure sensors on the pipeline, and add flow signals. All three signals are connected to the flow integrator, which performs the calculation of temperature and pressure compensation.
3、 The specific process of compensation: For example, a turbine flowmeter measures a certain gas and measures the volumetric flow rate. A temperature gauge and pressure sensor are installed on the pipeline, and three signals are connected to a flow integrator. The flow integrator calculates the mass flow rate corresponding to the number of pulses based on the density of the gas at that temperature and pressure, combined wit
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