Manufacturer Direct Coriolis Quality Flowmeter High Precision

1 MTCMF Mass Flow Meter Overview
Coriolis mass flow meter (MTCMF) is a new type flow meter which is designed according to Micro Motion and Coriolis principle.This kind of new flow meter can measure the fluid directly in a sealed pipeline. It consists of two sections: Sensor and Signal Transmitter.
1.1 Main Features
Unchallengeable MTCMF performance on liquid mass flow, volume flow, and density measurement
Unique design delivers unparalleled measurement sensitivity and stability
Guarantees consistent, reliable performance over the widest flow range
Designed to minimize process, mounting, and environmental effect
1.2 Application
The MTCMF 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 -200ºC
High temperature fluid, the maximum temperature up to 300ºC
High pressure fluid, like slurry flow measurement for oil drilling cementing
1.3 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:
A particle (δm) travels to the right at a constant velocity (v) inside a tube. The tube is rotating around a fixed point (P) at angular velocity (w), in this case, this particle will get two acceleration components:
Normal acceleration (centripetal acceleration), its value is equal to w2r, its direction is toward the point P
Tangential acceleration a1 (Coriolis acceleration), its value is equal to 2wv, its direction is perpendicular to v

The force generated by tangential acceleration is Coriolis force, its value is equal to Fc =2wvδm. In figure1.1 fluid  δm=ρA×ΔX,  So Coriolis force can be expressed as:
ΔFc=2ωυ×δm=2ωυ×ρA×ΔX=2ω×δqm×ΔX
Wherein A is the duct cross-sectional area.
δqm=δdm/dt=υρA

For special rotational pipe, its frequency is constant, ΔFc only depends on δqm. Therefore, directly or indirectly measuring the Coriolis force can be measured mass flow. This is how Coriolis mass flow meter works.

The actual flow sensor can't achieve rotational movement, replace by pipeline vibration. The principle is shown in Figure1.2,Figure1.3,Figure1.4. Both ends of a bend pipe are fixed, and the vibration force is applied to the pipe in an middle of the two fixed points (according to the resonance frequency of pipeline), taking the fixed point as axis, making pipeline vibrate at its natural frequency (w). When no fluid flows through the pipeline, the pipeline is only affected by vibration force, the vibration direction of two half-section of pipeline is the same, no phase difference. When fluid flows, by the influence of fluid medium dot Coriolis force Fc inside the pipeline (In the two half-section of pipeline, Coriolis F1 and F2 are equal in magnitude and opposite in direction Figure 1.2), two half-section of pipeline occur twist in the opposite direction to generate phase difference which is proportional to mass flow. The design of sensor is converting the measurement of Coriolis force to the measurement of phase difference for both sides of the vibrating tube. This is the working principle of Coriolis mass flow meter.
and Measuring Range 
Accuracy(Liquid) :( With FT-522 Transmitter):
Measurement accuracy: ±0.1% ±(zero stability/measurement value)%
Measurement accuracy: ±0.15% ±(zero stability/measurement value)%
Measurement accuracy: ±0.2% ±(zero stability/measurement value)%
Repeatability: 1/2 measurement accuracy %   
Density(Liquid) measuring range and accuracy (With FT-522 series transmitter)
Range: 0.3~3.000g/cm3     Accuracy: ±0.002g/cm3
measuring range and accuracy (With FT-522 transmitter):
Temperature measuring range: -200~350ºC   Accuracy: ±1ºC
temperature: -20ºC~60ºC
: The measuring tube SS316L  Housing: SS304  
pressure: 0~4.0MPa
level : Exd (ia) IIC T6Gb