CadisEtramaDiRaizel said:Theoretical 610L/min vs experimental 535L/min.
But it's airflow, wouldn't the nature of the fluid ( being water or any other liquid) impact calibration?CWatters said:Big bucket.
Forgot to add, that it's used to check asthma parametersCadisEtramaDiRaizel said:I've designed a venturi tube for my thesis ( Design of a digital peak flowmeter). I was wondering if there was a way to calibrate the flowrate, without using a measured flowrate producing device. The current error is about 12.3%. Theoretical 610L/min vs experimental 535L/min.
A chart.CWatters said:What did you use to calculate the current error rate?
Then how do I calibrate my results? ThanksCWatters said:So you compared the flow rate recorded by your new digital peak flowmeter with the flow rate measured by another device and recorded on a chart?
How do you know which is more accurate?
Google found..
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2882540/
"Comparison of five portable peak flow meters"
From the Results..
"The percent error for the spirometric values for each meter was 5.1% for Air Zone®, 1.9% for Assess®, 11.2% for Galemed®, 6.5% for Personal Best® and 3.0% for Vitalograph®."
Approximate calibration is a method used in scientific measurement to determine the accuracy of a measurement or instrument. It involves comparing the measurement or instrument to a known standard to determine the level of error or uncertainty.
Approximate calibration is important because it ensures the accuracy and reliability of scientific measurements. It allows scientists to identify and correct any errors or uncertainties in their data, making their results more trustworthy.
Approximate calibration is performed by comparing the measurement or instrument to a known standard. The difference between the measurement and the standard is then used to calculate the level of error or uncertainty.
Some common examples of approximate calibration include calibrating thermometers, balances, and spectrophotometers. In these cases, the instruments are compared to a known standard, such as a standardized temperature or weight, to determine their accuracy.
The frequency of approximate calibration depends on the specific instrument and its intended use. Generally, it is recommended to perform calibration at regular intervals or before each use to ensure the accuracy of the instrument's measurements.