
UKAS Scope Expanded to Include Temperature & Frequency.
The PASS Calibration Service Centre has just been accredited to carry out UKAS Temperature and Frequency calibrations. The new accreditation is an expansion of PASS’s existing scope

Tools, Do They Need Calibration?
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.

Basic Information About DC and Low Frequency Measurements
A very big part of electrical calibration procedures consists of DC and Low Frequency (LF) measurements. Multimeters, resistors, power supplies and electrical testers are commonly used instruments

The Importance of Measurement Standards and Traceability
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

International System of Units and Common Metrology Terms
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

Technical Methods And Requirements For Gas Meter Calibration
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 – Principles of Operation
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