How to calibrate the mass flow meter?
When calibrating a thermal mass flow meter, it is necessary to adjust the output for each gas by using the factor. Advanced models will have the option of selecting the gas, and the output will be adjusted as a result of the selection.
Using your mass flow meter to check its accuracy
Before beginning the installation process, ensure that the pipe system is free of debris.
Install a filter upstream to guarantee that the gas stream is free of moisture and oil and a downstream filter if the backflow is a problem.
It is important to ensure that the pipe diameter is appropriate for the flow rate and that there are no sharp angles or items in the flow route that may create turbulence.
The pipe diameter that should be used should be ten times the distance between an angle and the intake of the flow sensor.
Install your mass flow meter in a horizontal location, away from heat sources and mechanical vibrations, if possible. Before adding fluid pressure to your system, be sure there are no leaks.
In the field of liquid or gas measurement, a flow meter (also known as a flow sensor) is an instrument that measures the linear, nonlinear, mass, and volumetric flow rates of a liquid or a gas.
When selecting flowmeters, intangible variables such as familiarity with plant employees, their expertise with calibration and maintenance, spare parts availability, and mean time between failure histories, among other things, should be taken into consideration at the specific plant location.
It is also suggested that the installation cost be calculated only after the above procedures have been taken into consideration.
When this process is reversed, it results in one of the most frequent flow measurement errors
Instead of choosing a sensor that will function correctly, an effort is made to justify using a device because it is less costly. Those “inexpensive” purchases may turn out to be the most expensive installations in the long run.
The information on this page can assist you in better understanding flow meters. Still, if you have any specific flow measurement problems, you can always contact one of our application engineers for assistance.
It is necessary to decide whether flow rate information should be continuous or totalized before selecting a flow sensor.
Once these questions are addressed, it is recommended that an assessment of the properties and flow characteristics of the process fluid and the piping that will be used to accommodate the flow meter be performed.
Several forms have been created to assist in systematically completing this job. For each application, the following kinds of information must be completed.
Conclusion :
Identifying the lowest and maximum flows (mass or volumetric) that will be monitored is the next stage in determining the meter range that will be needed to be used.
This is followed by a determination of the necessary flow measurement accuracy. Most of the time, accuracy is expressed as a percentage of the actual reading (AR), as a percentage of the calibrated span (CS), or as a percentage of the full scale (FS).
The accuracy criteria should be specified individually for minimum, normal, and maximum flow rates, as well as for all three. Unless you are aware of these criteria, the performance of your flow meter may not be acceptable throughout its whole operating range.
