World Metrology Day raises awareness of the importance of metrology and has been celebrated every year on the 20th May since 2000. Organised by the BIPM (International Bureau of Weights and Measures) and the OIML (International Organisation of Legal Metrology), many national metrology institutes and regional metrology organisations around the globe participate in World […]
Metrology and calibration guides usually refer to the terms Measurement Standards and Measurement Traceability. Let us find out why these terms are important to metrologists and in what ways are related to one other.
Metrology is a science based on comparisons. A measurement of voltage, length, pressure or force must be compared to a well known and defined value, in order to produce a valid result. When performing comparisons, the existence of references for all measurement quantities is necessary. These references and their derived quantities are defined in the […]
Calibration of gas meters has become a necessity nowadays. Several methods are applied for performing gas meters’ calibration. The most common ones are:
Imagine we just finished the calibration of a resistor and the result of our measurement was 10.01 kΩ. Are we sure that this is the true value of the resistor? The answer is simple: No! We can never be 100% confident that we measured the true value. The true value could only be obtained by […]
We all know that test equipment is used to define a measurement of a parameter. Whether it is the temperature level of a pipe, the electrical charge running through a wire or even the moisture content in a building’s walls, specialist test equipment devices are able to accurately determine a measurement specific to that application.
Everything has a value. We plan our lives and make commercial exchanges based on values. A pound of meat bought from two different butcher’s shops must contain the same amount of food. A flange bought by a supplier must fit to the flange purchased by a different supplier. A 14 karat gold ring must contain […]
Calibration is a procedure that ensures that a measurement by an instrument is a true value within a tolerance limit generally given by the manufacturer. To accurately evaluate that this value is correct, the tester is compared with a calibrated reference instrument usually of much better accuracy. This confirms the accuracy and reliability of the […]
Using a device or series of devices that aren’t correctly calibrated could be disastrous for a project. The success or failure of the project may depend on such vital factors as tiny differences in measurements and the slightest changes to the temperature of a substance or the centimeters in distances could have an effect on the overall […]
Chances are the pieces of test equipment you use on a daily basis probably cost a lot of money when you bought them. Since this is the case, we can’t stress enough how important it is you take care of your tester by following this simple guide.