By the term “tool” we mean any physical item that can be used to achieve a goal, especially if the item is not consumed in the process. Informally the word is also used to describe a procedure or process with a specific purpose.
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:
Gas meters can be divided into two categories: displacement meters and flow meters. Displacement meters measure volume directly through periodic filling and emptying of one or more measurement chambers. This is why displacement meters are considered to be volumetric meters. The most common displacement meters 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 […]
UKAS (United Kingdom Accreditation Service) is recognized by the British government to assess the competence of organizations that provide certification, testing, inspection and calibration services, against internationally agreed standards.
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 […]
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 […]
With specialist devices available on the market we can measure just about anything. Whether it’s registering the effects of noise in the street, testing electrical current levels, measuring the amount of water flowing through a pipe or the chemical composition of a substance there more than likely exists a product on the market for measuring […]