Spot VSE flowmeter VSI0.04, original from Germany, Shanghai Weite Rui

Spot VSE flowmeter VSI0.04, original from Germany, Shanghai Weite Rui

AllGear flowmeter is a volumetric flowmeter, and its core working principle is based on mechanical measurement methods. The flowmeter contains a pair of precision gears (usually involute gears or cycloidal gears) that mesh with each other. When the measured medium flows through the flowmeter, the gears are driven to rotate by the pressure difference of the medium. Every revolution of a gear releases a fixed volume of medium, which is called'displacement'By measuring the rotational speed or number of rotations of the gear, the total volume or instantaneous flow rate of the medium flowing through the flowmeter can be calculated based on the displacement. Sensors (such as Hall sensors, magneto electric sensors, etc.) convert the mechanical rotational motion of gears into electrical signals, which are processed by signal processing units to output standard flow signals (such as pulse signals4-20mACurrent signal, etc

Precision gear set design

The gear set adopts high-precision grinding, with precise tooth profile and extremely small meshing clearance (usually in the range of a few micrometers), ensuring high consistency of displacement per revolution and providing a mechanical basis for flow measurement accuracy. Gear materials are usually made of high-strength and high wear resistant metal materials (such as stainless steel, special alloys, etc.), which can withstand the impact and wear of high-pressure and high viscosity media, extending their service life

Optimization of bearing system

Using high-quality rolling or sliding bearings, with low friction coefficient and high load-bearing capacity. The precision of the fit between the bearing and the gear shaft is high, ensuring the stability of the gear axis during rotation and reducing measurement errors caused by eccentricity. Some models may adopt self-lubricating bearing design, suitable for non lubricating or low lubricating media

Reliable sealing structure

Adopting a multi-channel sealing design, such asORings, mechanical seals, etc. effectively prevent medium leakage. The sealing material is selected based on the characteristics of the medium (such as oil resistant rubber, fluororubber, etc.) to ensure good sealing performance even in high temperature, high pressure, or corrosive medium environments

Integrated sensor integration

The high integration of sensors and measurement chambers reduces signal transmission paths, improves the accuracy and response speed of signal acquisition. The sensor part usually has anti-interference design and can work stably in complex industrial environments

Advantages and Characteristics

High measurement accuracy

As a volumetric flowmeter, its measurement accuracy is not significantly affected by fluctuations in fluid viscosity, density, pressure, and other parameters, especially in measuring low flow and high viscosity media. Usually, the accuracy level can reach±0.1%~±0.5%FSGood repeatability and small error range

Wide range of applicable viscosity

It can accurately measure various media ranging from low viscosity (such as light oil) to high viscosity (such as asphalt, polymer melt), and the applicable range of viscosity is usually up to1 mPa·sto1,000,000 mPa·sAbove, meet the special medium measurement needs of different industries

Low pressure loss

Optimization of internal flow channel design, resulting in minimal pressure loss and low energy consumption when fluid passes through, especially suitable for situations sensitive to system pressure loss

Fast response speed

Gear rotation is synchronized with flow rate changes, and the sensor can quickly capture instantaneous changes in flow rate. It has good dynamic response performance and can be used for monitoring pulsating flow or rapidly changing flow conditions

Sturdy structure and high reliability

The mechanical structure is simple and compact, with few moving parts, low failure rate, and easy maintenance. The metal shell and internal components enable it to adapt to harsh industrial environments such as vibration, impact, dust, etc

Can achieve bidirectional measurement

Some models are designed to support bidirectional fluid measurement, and the flow direction of the medium can be determined by judging the direction of gear rotation, increasing the flexibility of use

Functional scope

Mainly used for precise measurement of volumetric flow rate of various liquid media

Measure the flow rate of media in the conveying system, such as fuel, lubricating oil, hydraulic oil, etc

Flow monitoring and control of raw materials, intermediates, and finished products in chemical production processes

Quantitative addition of viscous media such as syrup, edible oil, sauce, etc. in the food and beverage industry

Accurate measurement of traditional Chinese medicine liquids and pharmaceuticals in the pharmaceutical industry

Accurate measurement of small flow rates or special medium flow rates in scientific research experiments

Industry advantages applicable

Petrochemical industry

It can accurately measure various petroleum products (such as crude oil, diesel, lubricants) and chemical raw materials (such as resins, solvents). Its high viscosity adaptability and high pressure tolerance enable it to cope with complex process conditions, meeting the high-precision requirements of trade settlement and process control

Mechanical Manufacturing and Hydraulic Systems

Used in hydraulic systems to monitor hydraulic oil flow, determine system leaks, pump efficiency, etc., with low pressure loss and fast response, it helps improve equipment operation reliability and maintenance efficiency

Food and pharmaceutical industry

Using sanitary grade materials (such as stainless steel) and a design without dead corners, it can meet the cleaning requirements of the food and pharmaceutical industry. Accurate measurement ensures formula accuracy and product quality consistency

Coatings and Ink Industry

Adapt to the measurement of high viscosity coatings and inks, avoid measurement errors caused by viscosity changes, and ensure uniform mixing of colors and components during the production process

energy industry

Provide precise metering in systems such as fuel delivery and lubricant circulation to help optimize energy consumption and reduce waste

Installation method

Pipeline installation

Usually flange or threaded connections are used, and attention should be paid to the requirements of the straight pipe sections before and after the flowmeter during installation (although positive displacement flowmeters do not require high straight pipe sections, it is still necessary to ensure smooth fluid entry). It is generally recommended that the length of the upstream straight pipe section be no less than5Double the diameter of the pipe, not less than on the downstream side3Double the diameter of the pipe

Flow installation

The flowmeter casing is usually marked with an arrow indicating the flow direction of the medium, and must be installed in the direction of the arrow to avoid reverse installation, which may result in inaccurate measurement or damage to internal components. Except for models that partially support bidirectional measurement, directional configuration is required in the instrument settings

Location installation

Prioritize horizontal installation to keep the gear shaft in a horizontal position, ensuring even lubrication and wear of the bearings. When installing vertically, it is necessary to ensure that the medium flows from bottom to top to avoid gear jamming caused by its own weight. The installation environment should avoid severe vibrations and strong electromagnetic interference

sealing treatment

Suitable sealing gaskets (such as oil resistant rubber gaskets, metal wrap gaskets) should be used at the connection flange or threaded interface to ensure no medium leakage. The torque should be uniform during installation to avoid damaging the interface

Precautions

Media compatibility

Before selecting a flowmeter, it is necessary to confirm whether its material is compatible with the measured medium to avoid corrosion of the sensor or seal by the medium. For example, highly corrosive media should be made of stainless steel or special alloy materials

Filtering and impurities

If the medium contains solid particles or impurities, it may wear gears or get stuck in moving parts. It is necessary to install a filter with appropriate accuracy upstream of the flowmeter (the filtration accuracy is usually recommended to be no less than)100μm）

Start and Run

Before starting, the air inside the pipeline should be drained to avoid cavitation and damage to the gears. During operation, it is necessary to avoid exceeding the rated pressure and temperature range to prevent equipment damage

Maintenance and Care

Regularly check the operation status of the flowmeter for leaks, abnormal vibrations, or noise. Regularly clean or replace the filter according to usage. For high viscosity media, the interior should be cleaned promptly after shutdown to prevent the media from solidifying and blocking

Signal connection

Ensure the correct connection and good shielding of the output signal line to avoid electromagnetic interference affecting the accuracy of signal transmission. The grounding should be reliable and comply with the instrument installation specifications

calibration cycle

To ensure measurement accuracy, regular calibration should be carried out according to usage requirements (usually once a year or every two years), which can be sent to professional metrology institutions or calibrated on-site using standard devices

Application field scenarios

Industrial production lines: such as precise proportioning and transportation of pigments and base materials in coating production lines, monitoring of melt flow rate in plastic extruders

Ships and Machinery: Measurement of Fuel Consumption for Ship Engines, Flow Monitoring of Hydraulic Systems for Large Machinery Equipment

Laboratory research: precise measurement of small flow rates and study of fluid flow characteristics with different viscosities

Energy metering: Consumption statistics and cost accounting of energy media such as fuel and lubricants

Food processing: quantitative addition and filling of viscous materials such as chocolate and syrup

VS0.1GP012V-12N11/3 24V DC

VS0,4GPO12V11A11/1 (24V DC)

VS4GPO12V-32N11 MF1 IG89306

VS01EP012V-32N11_0.1-10L/MIN

VS0.2GPO12V-32N11/4 10..28VDVS

VS1GPO12V12A11/1-24V：24V

VS4GP012V-32N11/6

Spot VSE flowmeter VSI0.04, original from Germany, Shanghai Weite Rui

The main products of Shanghai Weite Rui Company are:

1、 Pneumatic components:

German brands: FESTO pneumatic components from Germany, BURKERT solenoid valves from Germany, Heilong Norgren from Germany;

Japanese brand: SMC Pneumatic Components Japan CKD Pneumatic Components Koganei Pneumatic

Italian brands: Italian Kangmaosheng, American ASCO solenoid valve, American ROSS, Italian ATOS Atos.

2、 Industrial control products:

American brand: MTS/TEMPOSONICS sensors

German brands: PILZ relay, IFM sensor, HEIDENHAIN, KARCHT, VSE

German P+F sensor, German RENCON encoder; TURCK Turck, Germany,

3、 Hydraulic components

NUMATIC, PARKER Pneumatic Hydraulic, VICKERS Vickers, USA,

MOOG in the United States, FAIRCHILD in the United States, Rosemount in the United States

HAWE Germany REXROTH Rexroth, HYDAC Hedec, E+H Germany

YUKEN, NACHI, TOYOOKI, Fengxing, Japan