Factory Directly Supply High-Accuracy CNG Coriolis Mass Flow Meter with ATEX, Qan, Iecex, Qar, Peso, Sil2, , CCS and CPA Metrological Certification

• Customization: Available
• After-sales Service: Served
• Warranty: 12 Months From Deivery Date
• Model NO.: AMF015SN
• Accuracy: ±0.2-0.5%
• Main Application: Water, Wastewater, Diesel Fuel, Fuel Oil, Nature Gas, Corrosive Liquid/Gas
• Size: DN10-50
• Sensor: Tube/Flange
• Application: Transportation
• Type: Coriolis Mass Flow Meter
• Measuring Media: Gas
• Measuring Principle: Coriolis
• Measurement Object: Open Channel
• Certification: JIS, DIN, ANS, GB, CE, ISO
• Measure Parameters: Mass Flow, Temperature, Density, Volume Flow.
• Measurement Method: Directly Measure Mass Flow
• Measurable Medium: High-Viscosity , Liquids with Trace Solids
• Measurement Accuracy Affected Factor: Only by Vibration
• Installation Requirements: No Need to Consider Upstream and Downstream
• Transport Package: Carton
• Trademark: Lexflow
• Origin: China
• HS Code: 9026801000
• Production Capacity: 10000/Year
• Package Size: 44.70cm * 31.30cm * 36.70cm
• Package Gross Weight: 10.900kg

Product Description

High-accuracy CNG Coriolis mass flow meter with ATEX, QAN, IECEx QAR, PESO, SEIL2 , CCS and CPA Metrological certification

Product Description

 

ANDISOON specializes in accurate flow measurement under demanding operating conditions, including high pressure, high viscosity, and extreme high and low temperatures. In CNG (compressed natural gas) applications, the primary challenge is high-pressure operation. ANDISOON mass flow meters are engineered with high-pressure-resistant sensor structures, enabling increased flow tube wall thickness without compromising measurement sensitivity. This design ensures stable signal detection and highly accurate measurement performance even under harsh operating conditions. As a result, ANDISOON Coriolis mass flow meters for CNG gas dispensers are widely adopted in the global market for reliable and precise gas fueling applications.
     

 

Applicaiton Scenario

Measure the flow of gases, liquids, and other fluids with high accuracy and reliability. They are widely applied in high-pressure gas measurement applications, including CNG (compressed natural gas) and hydrogen systems.

Product Features

1. Advanced DSP Signal Processing Technology

Our company adopts second-generation transmitter technology based on advanced DSP (Digital Signal Processing). This technology delivers higher measurement accuracy, a wider turndown ratio, simplified system architecture, and enhanced operational stability.

2. High-Pressure Gas Measurement Capability

Traditional domestic mass flow meters are mainly used for liquid measurement, with limited application in gas measurement. Based on mature DSP technology, we have developed high-precision Coriolis mass flow meters specifically designed for high-pressure gas applications. These instruments are ideally suited for demanding industries such as CNG and high-pressure gas metering, delivering superior performance and reliability.

3. Industry-Leading High-Pressure Aging Process

We have established a high-pressure aging test platform to perform rigorous endurance testing on every CNG flow meter. This process effectively mitigates potential measurement drift caused by long-term high-pressure exposure, ensuring long-term stability and reliability in field operation.

4. Excellent Zero Stability

Advanced precision manufacturing processes are applied to sensor production to ensure high quality and consistency. As a result, the zero-point stability of our flow meters is comparable to leading international brands.

5. Multi-Parameter Measurement Technology

Our instruments utilize DSP-based digital signal processing technology. Compared with analog systems, digital front-end processing significantly reduces noise interference and improves response speed. Through RS485 communication, the control system can access multiple process parameters, including mass flow, volumetric flow, temperature, density, and operational status. In liquid applications, multi-parameter Coriolis flow meters can achieve accuracy up to 0.2% or better, depending on operating conditions.

6. Self-Diagnostic Function

During operation, any abnormal conditions in the flow meter can be identified through diagnostic software or handheld configuration tools. Fault codes enable fast troubleshooting, improving maintenance efficiency and reducing downtime.

7. Standard Industrial Communication Protocols

The product supports standard industrial communication protocols such as Modbus RTU, ensuring easy integration with control systems and straightforward configuration in industrial environments.

8. Industry-Leading Cryogenic Calibration Platform

To support LNG and cryogenic applications, we have developed an advanced cryogenic calibration platform using liquid nitrogen (-196°C), which provides even lower temperatures than LNG. This enables true cryogenic calibration of each LNG Coriolis flow meter, ensuring high accuracy and stable performance under extreme low-temperature conditions.

9. Strong Customization Capability

We offer flexible engineering and manufacturing capabilities to design and produce customized mass flow meters with special specifications, structures, and functional requirements tailored to customer applications.

10. International Certifications and Global Application

Our products have obtained certifications including China Classification Society (CCS), ATEX, IECEx, India PESO, and SIL functional safety certification. They are widely exported and used in multiple international markets, demonstrating proven reliability and compliance with global industry standards.

Accuracy	0.1% (Optional), 0.15%, 0.2%, 0.5% (Default)
Repeatability	0.05% (Optional), 0.075%, 0.1%, 025%(Default)
Density	±0.001g/cm3
Temp.	±1°C
Answer the liquid material	304 , 316L, ( Customizable: Monel 400, Hastelloy C22 , etc.)
Measuring medium	Gas, Liquid and Multi-phase flow

Model	AMF015SN		AMF020SN	AMF006H
DN	DN15		DN20	DN6
Accuracy	0.15%, 0.2%, 0.5%,
Denisty	density: ±0.001g/cm
Medium	Liquid /Gas
Max flow	30kg/min	70kg/min		20kg/min
Working pressure	≤25MPa			≤100MPa
Connection	(Internal Thread)	G1  (internal thread)		13/16-16UNF
Wetting Material	304,316L
Expl.-Proof	IP67  , Ex d ib II C T1-T5 Gb

a. 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. 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

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°.

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.

1. Customer: 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.

2. Customer: Can you design according to my requirements?
Andisoon: Yes, we offer OEM service and can tailor products to your specifications.

3. Customer: What is the warranty period?
Andisoon: 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.