The HY-LUGB vortex street nitrogen flowmeter is characterized by low pressure loss, large range, high accuracy, and is 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 vortex type nitrogen 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 put into use

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. The structural forms are diverse, including pipeline and plug-in flow sensors

High accuracy, 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 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

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

Execute standard vortex flow sensor (JB/T9249-1999)

Nominal diameter (mm) 15, 25, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 300 (200-1000 plug-in type)

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

Usage conditions: Medium temperature:- 40 ℃ -+250 ℃- 40℃-+350℃

Environmental temperature:- 20℃-+60℃

Relative humidity: 5% -90%

Atmospheric pressure: 86kpa-106kpa

Output signal function pulse signal, 4-20mA

Communication output function RS485 communication output, HART protocol, etc

Precision liquid: ± 1%;

Gas or steam: ± 1.5%, ± 1%

Range 1:10; 1:15; 1:20

Supply voltage A. External power supply:+ 24VDC ± 15%, ripple ≤ ± 5%, suitable for 4-20mA output, pulse output, RS485, etc

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

Output signal square wave pulse (excluding battery powered type): high level ≥ 5V, low level ≤ 1V; Current: 4-20mA

The pressure loss coefficient complies with JB/T9249 standard Cd ≤ 2.4

Explosion proof mark: intrinsic safety type: Exia Ⅱ CT2-T5, explosion-proof type: Exd Ⅱ CT2-T5

Protection level: ordinary type IP65