Coriolis Mass Flow Measurement
Coriolis mass flow meters take the pinnacle of technology on industrial fluid measurement. Many industries like oil and gas, food production and pharmaceuticals attach importance to efficiency, safety, precision and cost control. An unparallel insight into flow dynamics also a reason for their popularity, measuring mass flow directly rather than indirect calculations based on pressure and temperature. A device delivering precise readings in real time in challenging weather or processing conditions is nothing short of a game-changer, especially for industries struggling in complex variables.
What is a Mass Flow Meter?
A mass flow meter is used to measure the flow rate of a fluid passing through a pipe without disrupting the whole process of manufacturing. It measures mass sending through pipeline per unit time. Mass flow measurement is regarded as essential basis of most recipe formulations, material balance determinations, billing as well as custody transfer in related industries. The reliability and accuracy is of upmost importance in such applications.
How Does a Mass Flow Meter Work?
Two different technologies applied in mass measurement are inertial and thermal. The former inertia meter is known as Coriolis flow meters relying on Coriolis effect. Fluids passing through a pipe are subjected to Coriolis acceleration with the mechanical introduction of apparent rotation into the pipe. The deflecting force generated in the process of liquid flow will be a function of measured mass flow rate.
The later thermal mass flow meter measure the flow rate of gases and liquids directly. Whether introducing certain amounts of heat into the flowing stream or maintaining a probe at a constant temperature, a thermal mass flow meter operates with two temperature sensors and an electric heater. The above paragraph explains how thermal mass flow meter works.
What is the Principle of Mass Flow Meter?
Mass flow meters aims at measuring the mass of a substance flowing through a given point per unit time. But they vary in technologies for targeted accurate measurements like thermal, Coriolis, ultrasonic or vortex. The Coriolis mass flow meter is one of the most popular flow meter for its accuracy and reliability.
Accuracy & Rangeability of Mass Flow Meters
Due to outstanding accuracy and repeatability, mass flow meters are favoured in industries attaching importance to precision. Rangeability of mass flow meters refers to the maximum range they could measure. The range of mass flow meter is inversely proportional to its inaccuracy in general. Reasons for such relationship lie in muting-sensitivity sensors equipped in wide-range flow meters, which are not as sensitive as those narrow-range flow meters with hypersensitivity.
How to Choose Suitable Rangeability of Flow Meters?
Factors like fluid type, flow range, accuracy, temperature and pressure should be taken into account when choosing a suitable flow meter based on practical applications. Range of flow is the first thing should be determined prior to selecting the proper full-scale range. Small-range mass flow meters are preferred for higher accuracy if the range of flow is small. Besides, ambient temperature and pressure are additional factors influencing final accuracy. A mass flow meter being able to withstand high temperature and pressure takes the priority in making a choice if the temperature and pressure is high.
Coriolis mass flow meters from Lonnmeter offer 0.1% - 0.05% of rate inaccuracy on a mass flow range up to 100:1. Rangeability of curve tubes is wider than that of straight-tube meters. The total error of a meter is consists of both base inaccuracy and zero-shift error, which is the turnout of the irregular signal output in the zero-flow condition. The zero-shift error is the primary reason of error, accounting to 1%-2% of the measured rate in typical.
Some manufacturers illustrate the overall accuracy in the form of percentage of the flow rate for high flows and percentage of the flow rate as well as zero-shift error. It's critical to review specifications when make a comparison for the sake of trickery involved.
Applications & Limitations of Mass Flow Meters
Mass flow meters are prone to be influenced by environmental variables, readings, calculation; error adjustment may cause potential damage to equipment, a decrease in efficiency and reduction in accuracy. Look at following problems may be occurred to mass flow meters:
No.1 Pressure may drop if the flow velocity increases for detection;
No.2 Coriolis meters are expensive than other flow meters. And they could not be applied to larger sized pipes.
No.3 Moisture condensation in saturated gases may cause low readings and corresponding corrosion.
No. 4 Coating or material build-up on the sensor will influence efficiency of heat transfer.
In spite of higher initial cost, long-term advantages of accuracy, low maintenance and durability leave Coriolis mass flow meters a worth-well solution in many industries. Direct and reliable measurements of mass, density and temperature leave them versatile from oil, gas to food & beverage.
Please feel free to contact us and consult with experts to choose the right mass flow meters if you are finding a reliable manufacturer of Coriolis mass flow meters. Or just request a free quote with specific requirements.
Post time: Oct-24-2024
