The temperature and pressure compensation vortex flowmeter is mainly used for the flow measurement of industrial pipeline medium fluid. Such as gas, liquid, vapor, and other media.
It has small pressure loss, large measuring range-ability, and high accuracy. It is hardly affected by fluid density, pressure, temperature, viscosity, and other parameters when measuring volume flow under working conditions.
There are no movable mechanical parts, so it has high reliability and low maintenance. The instrument parameters can be stable for a long time.
This instrument adopts a piezoelectric stress sensor, which has high reliability and can work in the working temperature range of -10℃～+300℃. It has an analog standard signal and digital pulse signal output.
It is easy to use with digital systems such as computers. It is a relatively advanced and ideal flow meter.
Principle
As a flow meter, it is necessary to detect mass flow in material balance and energy measurement. At this time, the output signal of the flow meter should monitor the volume flow and fluid density at the same time. The physical properties and components of the fluid still have a direct effect on the flow measurement.
The vortex flowmeter is a new type of flowmeter for fluid flow measurement in closed pipelines based on the Karman vortex principle. Because of its good media adaptability, it can directly measure the volume flow of steam, air, gas, water, and liquid without temperature and pressure compensation. Equipped with temperature and pressure sensors, it can measure the volume flow and mass flow under standard conditions.
Installation
In practical applications, the maximum flow is often much lower than the upper limit of the instrument. As the load changes, the minimum flow is often lower than the lower limit of the instrument. The instrument does not work in its optimal working period.
In order to solve this problem is that the diameter at the measurement site is usually reduced to increase the flow rate at the measurement site, and a smaller diameter meter is used to facilitate the measurement of the meter.
However, this method of reducing diameter must have a length of 15D or more between the reducing tube and the meter. The pipe section is rectified, which makes processing and installation inconvenient. For ease of use, the battery-powered local display type vortex flowmeter adopts micro-power consumption high-tech.
It can run continuously for more than two years when powered by a lithium battery, which saves the purchase and installation costs of cables and display instruments. It can display instantaneous flow, cumulative flow, etc.
The temperature compensation vortex flowmeter has the characteristics of no moving parts, large measurement range, reliable operation, high measurement accuracy, wide media adaptability, small pressure loss, simple structure, convenient installation and maintenance, and long-distance signal transmission.
It can be widely used in the process measurement and energy-saving management of various liquids, gases, steam and other single-phase fluids in petrochemical, metallurgy, textile, medicine, machinery, water supply, heating, thermal power, scientific research, and other industries.
Technical parameter
◆Measuring medium: gas, liquid, steam
◆Aperture specifications: flange card-mounted caliber selection 25, 32, 50, 80, 100
◆Flange connection type diameter selection 100, 150, 200
◆Flow measurement range normal measurement velocity range Reynolds number 1.5×104～4×106; gas 5～50m/s; liquid 0.5～7m/s
◆The temperature of the measured medium: normal temperature –25℃～100℃
◆High temperature: –25℃～150℃ -15℃～300℃
◆Accuracy grade: 0.5 grade, 1.0 grade
◆Turndown ratio: 8:1, 12:1 ,30:1
◆Output signal: Pulse voltage output signal
◆The pulse duty cycle is about 50%, and the transmission distance is 100m
◆Pulse current remote transmission signal 4～20 mA, the transmission distance is 1000m
◆Instrument use environment Temperature: -25℃～+55℃ Humidity: 5～90% RH50℃
◆Material: Stainless steel, aluminum alloy
◆Power supply: DC24V or lithium battery 3.6V
◆Explosion-proof grade: ia II CT1-CT6
◆Protection grade: IP67
◆Detection amplifier circuit: interchangeable with different diameters and different media