our specialist articles
FlowHow is the knowledge database, offered for our valued customers. At TrigasFI, every year we calibrate, adjust and repair thousands of flow meters. As a result of this experience we have gained valuable knowledge. Both about the strengths and weaknesses of the various flow measuring principles.
We are happy to share our knowledge with you. And also present you with some useful tools. In the FlowHow section you can tap into the expert knowledge of an accredited flow calibration laboratory. Also, learn the “secrets” of flow from the experts. The same ones that develop precision flow measurement and calibration technology.
Is every calibration report a true indication of the performance of my measurement equipment? Most of us would like to answer this question with a clear “Yes, Sir!” Read about an example out of the daily life of a calibration lab, that will make you think.
Like any measurement instrument, a turbine flowmeter is sensitive to various effects, for example to the viscosity, as well as density and velocity. Following is a brief discussion of the sensitivity of a turbine flowmeter to viscosity and the description of a method (UVC) which can be used to compensate its effects.
Flowmeters are often chosen according to the specifications, as listed in the documents supplied by the manufacturers. Later, under actual operating conditions, customers are often disappointed with the measuring results, which are obviously not within the stated specifications. What is the reason for this? Are the suppliers giving wrong statements?
Time plays a big role in the accuracy of flow meters. All flowmeters tend to drift gradually over time and sometimes unbeknownst to their user, influence the measurement process. What are the reasons and how can they be met?
This question is frequently asked to the staff at TrigasFI GmbH in Neufahrn near Munich. And it’s a good question, because in the age of ISO 9000 and increased quality demands, it is important that all measurements of physical quantities that are part of an industrial process are accurate and reliable. Are there general suggestions? How can a user deal with this?
Irregular flow profiles due to bends, obstacles or other flow disturbances often cause significant measurement errors. In these cases, the general purpose recommendation of an optimal installation depth and insertion angle is not sufficient. How can accurate readings be achieved in difficult applications?