Flange connected vortex flowmeter

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flange connectionMainly used for flow measurement of industrial pipeline media fluids, such as,,, steam, and other media. Its characteristics are small pressure loss, large range, high accuracy, and almost unaffected by parameters such as fluid density, pressure, temperature, viscosity, etc. when measuring volumetric flow rate under working conditions. No movable mechanical parts, therefore high reliability and low maintenance. The instrument parameters can remain stable for a long time. The flowmeter adopts a piezoelectric stress sensor, which has high reliability and can operate within a working temperature range of -20 ℃ to+250 ℃. It has both analog standard signals and digital pulse signal outputs, making it easy to use in conjunction with digital systems such as computers. It is a relatively advanced and ideal flow meter. Our company can produce seismic dynamic vortex street flowmeters, which have been widely used.

• 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. There is no zero drift, and the performance is very stable. There are various structural forms, including pipelines
• Type and plug-in flow sensor forms
• 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 1:20 within the Reynolds number range of 2 × 104 to 7 × 106
• Low pressure loss (about 1/4 to 1/2 of the flow meter), 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
• Using ultra-low power single-chip microcomputer technology, one 3V10AH lithium battery can be used for more than 5 years
• Correction of instrument coefficient nonlinearity by software to improve measurement accuracy
• Using EPROM for power down protection of accumulated traffic, with a protection time greater than 10 years

Technical parameters of flange connected vortex flowmeter

execution standard	涡街流量计 （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 (other customizable)
accuracy class	Liquid: ± 1% Gas or: ± 1.5%, ± 1%
turndown ratio	1：6 — 1：30
Sensor material	304不锈钢、 316（L） 不锈钢等
Terms of Use	Medium temperature: -40 ℃~+250 ℃, -40 ℃~+320 ℃ Environmental temperature: -20 ℃ to+60 ℃ Relative humidity: 5% to 95% Atmospheric pressure: 86Kpa to 106 Kpa
Signal output function	Pulse signal, 4-20mA signal
Communication output function	RS485 communication output, HART protocol, etc
working power supply	External power supply: 34VDC ± 15%, ripple ≤ ± 5%, suitable for 4-20mA output, pulse output, RS485 communication output, etc Internal power supply: 1 set of 3.1V10AH lithium batteries, which can work normally when the battery voltage is between 2.0V and 3.0V
Signal line interface	Basic type: Hausman connector or self-contained three core cable; Explosion proof type: Internal thread M20 × 1.5
Explosion-proof rating	ExiaIICT5 或 ExdIIBT6
Protection level	IP65 or higher (customizable)

Flow range of flange connected vortex flowmeter:

Flange connected vortex street meter