Basic vortex flowmeter

Product Overview:

Basic vortex flowmeterIt is composed of vortex generators designed in the flow field, detection probes, and corresponding electronic circuits. When the fluid flows through a vortex generator, two alternating rows of vortices are formed on both sides, which are called Karman vortex streets.

Product features:

No movable parts, long-term stability, simple structure for easy installation and maintenance;

The sensor output is a pulse frequency, which is linear with the actual flow rate of the measured fluid, with zero drift and stable performance. It has various structural forms, including pipeline and plug-in flow sensors;

High precision, typically with a measurement accuracy of ± 1.0% for liquids; The measurement accuracy of gas is ± 1.5%;

The measurement range is wide, reaching up to 1:20 within the Reynolds number range of 2 * 104 to 7 * 106;

Low pressure loss (about 1/4 to 1/2 of orifice flowmeter), belonging to energy-saving flow meters;

The installation method is flexible, and it can be installed horizontally, vertically, and at different angles according to the on-site process pipeline blockage;

Adopting anti-interference circuit and anti vibration sensing head, it has certain anti environmental vibration performance;

Adopting ultra-low power microprocessor technology, one 3V10AH lithium battery can be used for more than 5 years;

Correction of instrument coefficient nonlinearity by software to improve measurement accuracy;

useEEPROMProvide power down protection for accumulated traffic, with a protection period of more than 10 years;

Technical parameters:

Execution standards:Vortex Flowmeter（JJG1029-2007）

Instrument diameter (mm): 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300

Nominal pressure (Mpa): 1.6Mpa, 2.5Mpa, 4.0Mpa (others can be customized)

Accuracy level: ± 1% for liquids, ± 1.5% for gases or vapors, ± 1%

Range ratio: 1:10; 1:15； 1:20

Sensor material: 304 stainless steel, 316 (L) stainless steel, etc

Usage conditions:

Quality temperature: -40 ℃~+250 ℃, -40 ℃~+350 ℃

Environmental temperature: -20 ℃ to+60 ℃

Relative humidity: 5% to 90%

Atmospheric pressure: 86Kpa to 106Kpa

Signal output function: pulse signal, 4-20mA signal

Working power supply:

A. External power supply: 34VDC ± 15%, ripple ≤ ± 5%, suitable for 4-20mA output, pulse output, RS485, etc

B. Internal power supply: 1 set of 3.6V10AH lithium batteries, which can work normally when the battery voltage is between 2.0V and 3.0V.

Under voltage indication occurs when the voltage is below 2.0

Communication output function: RS485 communication, HART protocol, etc

Signal wiring port: Basic type: Hosman connector or self-contained three core cable; Explosion proof type: Internal thread M20 * 1.5

Explosion proof rating: ExiaICT5 or ExdIIBT6

Protection level: IP65 or higher (customizable)

Product Usage:

Basic vortex flowmeterWidely applicable for measuring gases such as natural gas, coal to gas, liquefied gas, and light hydrocarbon gases.