1、 Overview of Wedge Flow Meter:

ARSLGXX wedge flowmeter is a new type of differential pressure flowmeter that can perform high-precision flow measurement in high viscosity, low Reynolds number (Reynolds number>500 can be used) fluid conditions; It has unparalleled advantages and irreplaceable role in flow measurement scenarios with low flow rate, small flow rate, and large pipe diameter.

ARSLGXX wedge flowmeter has the function of correcting parameters such as flow coefficient, nonlinear error, temperature change, density change, etc; The measurement accuracy can reach 0.5%; It can have on-site display and standard current signal (4-20mA DC) output, which can be conveniently used for automatic control systems or networked with computers for automatic adjustment and control of flow or other parameters.

ARSLGXX wedge flowmeter is mainly used for flow measurement of high viscosity (heavy oil, residue oil, diesel, engine oil, etc.), industrial gas (coke oven gas, blast furnace gas, generator gas, city gas), hydrogen, nitrogen, air, steam, sewage liquid and other media.

This flowmeter has a simple structure, no movable parts, is not easily worn by fluids, has stable and reliable working performance, and a long service life; Its measuring elements and pressure measuring device have a special structure, which does not cause stagnation or blockage when the fluid passes through, and has a small pressure loss. It is an ideal choice for high-precision flow measurement at low Reynolds numbers.

Equipped with dual flange differential pressure transmitter

Product Introduction: ARSLGXX Wedge Flow Meter is a new type of flow meter that gradually became practical in the 1980s. Its detection component is a V-shaped wedge block (also known as a wedge throttling component), with its smooth top angle facing downwards, which is conducive to the smooth passage of liquids or viscous liquids containing suspended particles, and will not cause stagnation on the upstream side of the throttling component. Therefore, it is particularly suitable for measuring volumetric and mass flow rates in industries such as petroleum and chemical.
2、 The main features of wedge-shaped flowmeter are:

Especially suitable for measuring media with high viscosity, low Reynolds number, suspended particles or bubbles;

The measurement accuracy is not affected or limited by the characteristics such as the dielectric constant of the fluid medium;

The wedge-shaped component has a special structural design, which has a guiding effect and prevents blockage;

● It has compensation functions for fluid viscosity changes, temperature changes, density changes, etc;

Resistance to vibration, impact, dirt, corrosion, and explosion;

● Equipped with bidirectional flow measurement function;

High measurement accuracy;

The structure is simple, sturdy, highly reliable, easy to install, and has low operation and maintenance costs;

No moving parts, no wear and tear, no need to recalibrate for long-term use.
Good repeatability and high accuracy, the calibrated wedge flowmeter has an accuracy of 0.5 level.
● It has self-cleaning ability and no stagnant area.
Wear resistant, long lifespan, and high reliability.
The permanent pressure loss is smaller than that of the orifice plate.

● Integrated structure, on-site installation does not require installation of pressure pipelines, and can be directly connected to the pipeline with threads or flanges. Construction is time-saving, labor-saving, and easy to maintain.

3、 Main technical parameters of wedge-shaped flowmeter:

Measurement accuracy: ± 0.5% to ± 1.0%

Long term operating accuracy: 0.2% F.S/Y.

Minimum flow velocity: 0.01m/s.

● Service life: can last for more than ten years.

Range ratio: ≥ 10:1

The range of Reynolds number coefficient usage: lower limit of 300, upper limit of 1 × 106 or more.

Measure the upper limit of liquid viscosity: 500MPa · S.

● Working pressure range: -0.1~60MPa.

Working temperature range: -50~560 ℃.

4、 Precautions for installation of wedge-shaped flowmeter:

1. Generally, wedge-shaped flow sensors are equipped with front and rear measuring tubes, which can be installed and used horizontally or vertically. When the sensor is installed on a vertical pipeline, the fluid should flow from top to bottom. When measuring liquids, attention should be paid to ensuring that the differential pressure transmitter can flip over to eliminate bubbles, in order to avoid zero drift of the instrument;

2. The upstream and downstream sides of the sensor should be equipped with straight pipe sections, and the inner wall of the pipeline should be smooth, clean, and free of attachments. The length of each section should be as shown in the table

3. When installed horizontally, the wedge differential pressure element should be at a 90 degree angle to the centerline of the pipeline. For vertical installation, due to the slight static pressure effect between the pressure points, it is necessary to pay attention to the zero adjustment of the differential pressure transmitter.

5、 Structural form of wedge-shaped flowmeter