DN65 DN65 spiral vortex flowmeter

Description :

　　This product has no mechanical rotating parts, is not easily corroded, has a compact structure, high reliability, good stability, and requires minimal maintenance. It is currently the product of oil field and urban natural gas transmission and distribution measurement, as well as trade measurement.

　　1、 Technical parameters:

　　Measurement medium: high flow rate gases such as natural gas, coal to gas, compressed air, etc

　　Range: 1.2-3600m3/h

　　Output signals: pulse signal, 4-20mA current signal, and RS485 data communication

　　Accuracy level: 1.0 level, 1.5 level

　　Medium temperature: -20 ℃~80 ℃

　　Explosion proof grade: ExiaICT4

　　2、 Structure:

　　1. The sensor includes a vortex generator, detection element, rectifier, and housing.

　　The vortex generator is composed of specific spiral blades, which are fixed at the front end of the shell contraction section, forcing the fluid to generate strong vortex flow.

　　The detection element is installed near the throat of the expansion tube, and the frequency signal of vortex precession can be measured using thermal, piezoelectric, strain, capacitive, or fiber optic detection elements.

　　The rectifier is fixed at the outlet of the flowmeter body, and its function is to eliminate vortex flow to reduce the impact of downstream flow state on instrument measurement.

　　The shell is designed as a flow channel with a certain shape to form vortices, fix and protect the components installed inside, and connect them to the pipeline through flanges.

　　2. Conversion display instrument

　　The weak voltage signal detected by the piezoelectric sensor is amplified, filtered, and shaped into a pulse signal whose frequency is proportional to the flow rate, and then counted and displayed by the display instrument. The display device is equipped with an output interface to output various signals. The measured gas medium can be compensated for temperature and pressure, converted to volumetric flow rate under standard conditions, and displayed.

　　3、 Main features:

　　1. No mechanical movable parts, corrosion-resistant, stable and reliable, long service life, long-term operation without special maintenance;

　　2. Implemented mechatronics integration, eliminating the need for manual monitoring in daily measurement processes;

　　3. The installation conditions for the process are not strict, and the straight pipe sections upstream and downstream of the instrument can be greatly shortened compared to orifice plates and vortex flowmeters;

　　4. The measurement accuracy of the system can meet the current trade measurement requirements;

　　5. Small size, light weight, and convenient offline calibration.

　　4、 Installation:

　　1. Sensors can be installed in vertical, horizontal, or any inclined position according to the flow direction indicator;

　　2. When the pipeline is long or close to the vibration source, supports should be installed upstream and downstream of the flowmeter to eliminate the impact of pipeline vibration;

　　3. The installation location of the sensor should have sufficient space for the inspection and maintenance of the flowmeter, and should meet the environmental requirements of the flowmeter;

　　4. Avoid interference from strong external magnetic fields;

　　5. When installed and used outdoors, there should be a cover to avoid direct sunlight and rainwater erosion, which may affect the service life of the instrument.

AfterSalesService :

• DN65 DN65 spiral vortex flowmeter