High-Pressure DN 20 Coriolis Mass Flow Meter with CE-ATEX Certification

Product Description

 

Product Description

ANDISOON specializes in high-precision mass flow meters for challenging applications, including high-pressure, high-viscosity, and extreme temperature conditions. Our CNG flow meters are designed to handle high-pressure gas, with sensors and reinforced flow tubes that improve signal sensitivity for accurate measurement. Using advanced DSP digital signal processing, ANDISOON meters deliver high accuracy, fast response, and multi-parameter measurement, including mass flow, volume flow, temperature, and density. Each flow meter undergoes high-pressure aging and cryogenic calibration for stable performance in CNG and LNG applications, while self-diagnosis technology and support for Modbus RTU and other industrial protocols ensure easy integration and maintenance. With excellent zero-point stability, low signal noise, and customizable designs, ANDISOON provides scalable solutions for industrial gas measurement worldwide.
 
 

R&D Competence

a. (Left picture)The optimal vibration mode of flowmeters is determined after the finitement analysis, the structure is improved and the modal in each order is reasonably distributed. Driven by the simple harmonic, each position of the measuring tube will respond. A reasonable damped structure has been designed to improve the noise-proof feature.

b. (Right picture)The  high-performance   32/40-bit  DSPs  are  used   as  the   core  processor,   including  high efficiency  instruction  set,  hardware  FFT and  
other peripherals  specially  used  for  audio  signal processing to fast process various digital signals in real time and largely improve the stability of flowmeters.

c. The mass flowmeter is welded by the unique vacuum brass solder process, which ensures the welding quality and also fully guarantees the stress removal to largely improve the zero stability of mass flowmeter in use.

d. Water gauge calibration testing platform: The Company owns the scarce calibration systems and  stability  testing  system  for  water  gauges  with  large-span  diameter  (DN6-DN400)  in  the industry for the operating condition calibration and the stability testing of flowmeters.
e. High pressure gas testing platform: The Company has established the first high pressure air (25MPa)  calibration  system  and  stability  testing  system  in  China  for  the  operating  condition calibration and the stability testing of high-pressure flowmeters.

f. Liquid nitrogen low-temperature calibration testing platform: The Company has established the first copious cooling calibration system and stability testing system in China for the operating condition calibration and the stability testing of low-temperature flowmeters.

 

Performance Comparison Table of Andisoon Coriolis mas  Flow Meter and European and American Coriolis mas Flow Meter

Comparison items	Andisoon	Product 1 from European or America		Product 2 from European or America	China Domestic related products
Signal processing technique	DSP processing	DSP processing		DSP processing	Analogue signal processing
Fault predication	Self-diagnosis	Self-diagnosis		Self-diagnosis	None
Nominal liquid medium accuracy	0.15%	0.15%		0.15%	0.5%
Nominal gas medium accuracy	0.5%	0.5%		0.5%	1.0%
Measured small flow error	Good	Good		Poor	Poor
Period stability	Good	Average		Good	Average
MVD technology application	Yes	Yes		Yes	None
Vacuum heat preservation technology	Yes	None		None	None
Factory calibration methods	Simulated real  flow calibration	Some simulated real flow calibration		Some simulated real flow calibration	Water gauge
Market price	Moderate	Very high		Very high	Relatively low
Customer maintenance cost	Low plate-level  maintenance cost	High overall replacement cost	High overall replacement cost		High overall replacement cost

Company Profile

Chengdu Andisoon Measure Co., Ltd is a leading instrument-making manufacturer in China, renowned for its patents, copyrights, and industry-standard certifications. With over 110 patents, Andisoon has independently developed high-quality flowmeters and a wide range of precision measurement products, including flowmeters , Nozzles & Valves, Cryogenic Pumps, Liquid Hydrogen products, Calibration Devices, Automatic Meters, and System Integration. Andisoon's flowmeters are utilized across various industries, including oil, refining, chemical, shipbuilding, pharmaceuticals, food & beverage, and environmental protection. They excel in challenging environments, such as high pressure, viscosity, and temperature variations, with sensors designed to withstand high pressures, enabling greater sensitivity in signal detection. The company offers high-precision metering solutions, with product sizes ranging from DN3 to DN150, and provides ODM, OEM, and direct sales services for overseas customers. Andisoon possesses rare calibration systems and stability testing for water gauges, including large-span diameter (DN6-DN400) and high-pressure air (25MPa) calibration and stability testing systems, as well as extensive cooling calibration systems for low-temperature flowmeters.

Why choose uS?

Through many tests and improvements, ANDISOON summed up our experience and finally determined an inlet and outlet combined splitter cone, vacuum nickel-based brazing and heat treatment technology suitable for the CNG flowmeter produced by our company.

1. Imported combined splitter cone (obtained utility model patent - patent number: 201020170649.5)

The inlet end and the outlet end are structurally symmetrical and are connected by a pipe body. The inlet end and the outlet end are composed of an interface joint, a shunt cone, two measuring tubes and a measuring tube joint, wherein the interface joint and the measuring tube joint form a The two are docked and positioned with a shunt cone. The measuring tube is inserted into the measuring pipe joint and then welded. The shunt cone is inserted into the measuring tube and the measuring pipe joint. The measuring tube and the shunt cone maintain a tight positioning fit.
The measuring tube and the measuring tube joint are welded by argon arc welding; the diverter cone is inserted into the inner hole of the measuring tube joint in the axial and radial directions, and the diverter cone is positioned in conjunction with the measuring tube in the circumferential direction.
The interface joint is placed on the diverter cone, so that the outer cone surface of the diverter cone and the inner cone surface of the interface joint are positioned axially, and the inner hole of the interface joint is positioned radially. The interface joint and the diverter cone are also integrally pressed. Tight and welded with argon arc welding.

Beneficial effects:
When used in CNG flowmeters, this utility model can effectively improve the yield of CNG flowmeters, reduce the overall production cost, and scientifically ensure the overall performance of the CNG flowmeter. Moreover, this method and structure also have the characteristics of easy parts processing, low cost, and easy assembly and welding. The application of this method and structure will be of great help to the development of low-priced, high-performance domestic CNG flow meters, and will lay a solid foundation for the market dominance of domestic CNG flow meters.

2. Vacuum nickel-based brazing and heat treatment (obtained invention patent - patent number: 201010186127.9)

This process is completed according to the process flow of parts positioning, parts calibration, surface treatment, solder laying, vacuum welding and vacuum insulation, and cooling out of the furnace. It effectively solves the problem of CNG flowmeter failure caused by uneven heating of the measuring tube due to conventional silver-based manual soldering. Performance is greatly reduced.
After this process is applied in the production process of CNG flow meters, the deformation of the measuring tube and the uneven internal stress are minimized, which greatly improves the performance of the CNG flow meter. The yield can reach 95% and the overall cost is reduced. It is suitable for CNG flow. Large-scale mass production of CNG flow meters; it can bring the overall technology and accuracy of CNG flow meters to a new level; it will be of great help to the development of low-priced, high-performance domestic CNG flow meters and create a better market for domestic CNG flow meters. Dominance has laid a solid foundation.

3. High-precision time difference detection technology

It is used for high-precision time difference testing of mass flow meters. The time difference measurement can reach within 0.3 nanoseconds, ensuring high accuracy of measurement; it adopts DSP (digital signal processing) technology and can effectively replace imported products.

1) Adaptive linear digital filtering technology

It can filter out the interference waveform of the output current of the mass flow meter sensor. Linear filtering does not affect the linear characteristics of the flow meter. In addition, because the transmitter needs to adapt to sensors with multiple natural frequencies, an adaptive algorithm is designed to achieve frequency adaptation. Ensure the versatility of the filtering algorithm.

2) Weak signal detection circuit based on high-precision differential analog operational amplifier

It belongs to the circuit design of the mass flow meter. The design of the voltage follower prevents the output from affecting the input. The design of the differential circuit effectively suppresses common mode interference signals. It has strong anti-interference performance, low detection signal amplitude and high accuracy.

3) Adaptive broadband oscillation technology based on frequency sweep algorithm

Used for mass flow meters, it has a wide frequency sweep range and fast frequency sweep speed, effectively ensuring the detection of the center frequency. Different sensors can be set to different frequency sweep ranges.

4) Synchronous phase tracking technology for constant measurement of tube resonance amplitude

It is used in mass flow meters to ensure that the resonance amplitude of the measuring tube is stable, the fluctuation is small, and the phase synchronization can be achieved within 6°.

Certifications

All the products passed ATEX, CCS, IECEx and PESO certificates.

Our Advantages

UNIQUE FEATURES OF ANDISOON MASS FLOWMETER

Mass flow meters are known for their high accuracy, wide measuring range and reliable performance, and have been successfully used in various industries over the past many years.

Unlike other instruments that are limited to measuring liquids at normal pressure and temperature, ANDISOON excels in measuring under challenging conditions, including high pressure, high viscosity, and high and low temperatures. For example, when measuring CNG (compressed natural gas), the difficulty lies in the high pressure. However, ANDISOON's sensors can withstand high pressures, allowing the necessary increase in flow tube thickness, allowing the transmitter to detect signals with greater sensitivity. Therefore, ANDISOON's mass flow meters specially designed for CNG gas dispensers have been widely used in the domestic market
In the high-pressure sector, Andisoon has developed mass flowmeters for CNG gas charging, mass flowmeters for gas unloading columns, and mass hydrometers for hydrogenation machines with a maximum working pressure of 100MPa.

In the field of cryogenics, Andisoon has developed a backflow meter and a liquid phase injection meter for LNG refueling stations, with a minimum temperature of -196°C.

In the field of process control, Andison has developed a micro-bend type mass flowmeter, with a maximum flow rate of up to 300t/h, widely used in petroleum, chemical and other industrial conditions.

In the field of high-flow low-temperature metering, Andisoon has developed a U-shaped high-vacuum mass flowmeter, which has been patented and is used in liquefaction plants and ship loading and unloading operations.
Andison is committed to providing high-precision metering solutions, with product sizes ranging from DN3 to DN150, meeting your personalized metering needs.
 

FAQ

Q1:Are you a trading company or a manufacturer?
A: We are a professional manufacturer with our own factory.


Q2: Do you accept OEM?

A2: Yes

Q3:What is the warranty period?
A3:The quality guarantee period is 12 months from the completion of installation and commissioning by the purchaser, or 14 months from the date of delivery (whichever comes first), excluding maintenance kits or small accessories.

Q4:What is the delivery date?
Andisoon: Our stock is based on GB/DIN flange, with a delivery date of 10 days. We also accommodate other flanges like ANSI/JIS or thread connection, with a delivery date of 15 days.