Accreditation Service – Calibrating your instrument is very important. In the industry today, more instruments are being used without first being checked for tractable accuracy, but the accuracy of the instrument can be the difference between throwing the entire measurement process down and being right for the first time. If your company is ISO certified, having all the control instruments calibrated regularly, and holding their calibration certificate in the archive is a mandatory part of the auditable procedure.
The importance of calibration is not only to check whether the value indicated by the instrument complies with the specifications but also to help you understand the inaccuracies of the value displayed at certain measurement points. When you calibrate the instrument, it is best practice to calibrate at critical measurement points on instrument applications. For example, this is a legal requirement for food caterers and retailers to ensure baked goods are stored at 63C or more to avoid planting harmful bacteria, therefore it is recommended to calibrate the thermometer at 63C or as close as possible.
The calibration certificate proves that the instrument has been checked and verified against these important measurement points, and will list the errors of the existing instruments, giving you the confidence to show the auditor or customer that the reading of your instrument is in accordance with the specified accuracy, and suitable for applications that you want the Certificate to be available for most instruments used in professional environments where tractable accuracy is required.
In a professional environment, it is standard procedure to calibrate the instrument at the time of purchase, and based on the annual re-calibration, but if your instrument application requires a shorter period between calibrations, it is often best practice to prepare a ‘call’ procedure with a qualified laboratory technician. This way you will always be reminded when your instrument is calibrated, and the accuracy of the instrument will not be disturbed without your knowledge.
English accreditation service (UKAS). It has regular technical audits to ensure it retains measurement capabilities and complies with detailed competency procedures and standards. This ensures that calibration is done to the highest standards. The UKAS certificate is also a legal document that will stand in court.