Coriolis Force Mass Flowmeter High Precision Measurement For Liquids And Gases

The working principle of the Coriolis mass flowmeter is based on the Coriolis Effect. Its core is to determine the mass flow rate by measuring the inertial force (Coriolis force) generated by the fluid in the pipeline. The following is a detailed working process:

1. **Vibrating pipeline**:
The key components of the Coriolis mass flowmeter are one or two measuring tubes, which are usually installed on a drive device to make the pipeline vibrate at a specific frequency. When there is no fluid flowing through, the vibration of the pipeline is symmetrical and in the same phase.

2. **Coriolis force caused by fluid flow**:
When the fluid passes through the vibrating pipeline, Coriolis force is generated because the fluid passes through the curved pipeline in a moving state. This force acts on the fluid and the pipeline, causing the pipeline to twist or deform slightly.

3. **Phase difference detection**:
The mass flowmeter detects this pipeline distortion caused by the Coriolis force through a sensor installed on the pipeline. Usually, the two sensors are located at the inlet and outlet of the pipeline respectively. When the fluid flows, the vibration at the inlet and outlet will produce a phase difference (that is, the time difference of the vibration waveform).

4. **Mass flow calculation**:
By measuring the phase difference between the inlet and outlet, the flow meter can calculate the mass flow of the fluid. The larger the phase difference, the higher the mass flow.

5. **Density and temperature compensation**:
Some Coriolis mass flowmeters can also estimate the density of the fluid by measuring the vibration frequency. In addition, they usually have a built-in temperature sensor for temperature compensation to improve the measurement accuracy.

The advantage of Coriolis mass flowmeters is that they directly measure the mass flow without considering the physical properties of the fluid such as temperature, pressure, viscosity, etc., so they are very popular in a wide range of industrial applications, such as the chemical, petroleum, food and pharmaceutical industries.

### Summary
- Vibrating pipes sense fluid flow;
- Flow induces Coriolis force, causing pipe distortion;
- Mass flow is calculated by detecting the phase difference between the inlet and outlet.

Detailed introduction of Coriolis mass flowmeter:

The Coriolis Mass Flow Meter is a meter used to measure the mass flow of liquid or gas, and its working principle is based on the Coriolis effect. Coriolis flowmeters are widely used due to their high accuracy and wide range of applications. The following is a detailed introduction to the Coriolis mass flowmeter:

Working Principle

The working principle of the Coriolis mass flowmeter is based on the Coriolis Effect, which refers to the inertial force that an object will be subject to when it moves in a rotating system. Specifically, the Coriolis flowmeter uses the following steps to measure flow:

1. **Fluid passing through the sensor**: The fluid flows in the sensor of the flowmeter, usually through a pair of vibrating tubes or vibrating elements.

2. **Vibration of the vibrating tube**: The vibrating tubes of the flowmeter are forced to vibrate at a certain frequency and amplitude. The fluid exerts force on these vibrating tubes during the flow process.

3. **Generation of Coriolis force**: When the fluid flows through the vibrating tube, Coriolis force is generated due to the inertia of the fluid, and this force causes the vibrating tube to have a relative displacement. This displacement affects the vibration frequency and phase of the vibrating tube.

4. **Measurement and calculation**: The sensor detects the relative displacement and frequency change of the vibrating tube and converts these signals into mass flow values. By analyzing the vibration characteristics of the vibrating tube, the flow meter can directly calculate the mass flow of the fluid without considering the density and temperature changes of the fluid.

Main features

- **High accuracy**: Coriolis flowmeters provide very high measurement accuracy, which can reach 0.1% or even higher.

- **Direct measurement of mass flow**: The mass flow of the fluid can be measured directly without converting the relationship between volume flow and density.

- **Wide applicability**: Suitable for flow measurement of liquids and gases, including fluids with high viscosity, corrosiveness or high bubble content.

- **Comprehensive functions**: In addition to flow measurement, many Coriolis flowmeters can also measure other parameters such as temperature, density and concentration.

- **Less maintenance requirements**: Because the measuring part of the flowmeter has no moving mechanical parts, it is relatively less prone to wear and failure.

Application areas

- **Chemical industry**: Used to accurately measure the flow of chemicals, especially those that are highly corrosive or viscous.
- **Food and Beverage Industry**: Accurately measure liquid raw materials and products to ensure product consistency and quality.
- **Oil and Gas**: Measure the flow of oil, natural gas and their mixtures, especially in situations where high accuracy and stability are required.
- **Pharmaceutical Industry**: Used to accurately measure the flow of drugs and other critical liquids during the production process.

Overall, Coriolis mass flowmeters have become key flow measurement tools in many industrial fields due to their high accuracy, stability and versatility.

Main Features
1. Unchallengeable performance on liquid mass flow, volume flow, and density measurement
2. Unique design delivers unparalleled measurement sensitivity and stability
3. Guarantees consistent, reliable performance over the widest flow range
4. Designed to minimize process, mounting, and environmental effect

Application
The mass flow meter can be used in the following fields to meet the requirements of ingredient, mixing processes and commercial measurement.
Chemical: containing chemical reaction system
Petroleum: moisture content analysis
Lipids: including vegetable oils, animal fats and other oils
Pharmaceutical
Painting
Paper making
Textile printing and dyeing
Fuel: crude oil, heavy oil, coal slurry, lubricant and other fuels.
Food: gas dissolving beverage, health drink and other liquid.
Transportation: pipeline liquid measurement.
Low temperature fluid, like liquid oxygen and liquid nitrogen, the low temperature up to -200℃
High temperature fluid, the maximum temperature up to 300℃
High pressure fluid, like slurry flow measurement for oil drilling cementing

Working Principle
If a pipe is rotated around a point (P) while liquid is flowing through it (toward or away from the center of rotation), that fluid will generate an inertial force, with reference to Figure 1.1:

Sensor Structure

Mass flow meter sensor consists of measurement tube, driving device, position detector, support structure, the temperature sensor, housing, etc.
① Supporting structure: the measuring tube fixed on the supporting structure as the vibrating axis.
② The measuring tube (Vibrating tube): consist of two parallel tubes.
③ Position detector: used for the measurement of measuring tube distortion.
④ Drive device: generate electromagnetic force to drive measuring tube to make it vibrate close to resonance frequency.
⑤ Housing: Protect the measuring tube, driving unit and detector. 

Technical Parameters

Packing & Delivery


FAQ
1. Q: What information need to be provided to choose the suitable model?
A: Application field, Nominal pressure ,Medium & medium temperture , Power supply , Output,
Flow range, Accuracy, Connection and other parameters.
2. Q: Are you a trade company or a manufacturer?
A: We are an ISO approved manufacturer specialized in level and flow measuring instruments.
OEM & ODM service are available. Welcome to visit us in China.
3. Q: What is your MOQ?
A: To start our cooperation, sample order is acceptable.
4. Q: What is your delivery date for the Intelligent Mini Micro Turbine Fuel Oil Diesel Flow Meter?
A: The delivery date is about 3-15 working days after receipt of payment.
5. Q: What is your payment terms?
A: We support T/T, PayPal ,Western Union.
For mass production order, it is 30% deposit in advance and 70% balance before shipment.
6. Q: Do you have a warranty for the Flow Meter?
A: Yes, we have the warranty of 12 months.