We know that measurement devices give us the values of a certain metric, but what assures us of the accuracy and correctness of the values produced by a measurement device? How do we know if a measurement device is able to function properly and give us precise measurements?
This is where calibration comes in. Calibration is the comparison of measurement values between those delivered by a measurement device under test and of a calibration standard of known accuracy. This calibration standard may be another measurement device of known accuracy, a device that is able to generate the quantity to be measured, or a physical artefact.
The Importance of Calibration
We may no longer see it, but everything in our everyday life is or was measured at some point. Accurate measurement is essential in almost every aspect of our lives as the data gathered from it is the basis for important decisions, inventions and many others. As such, it is crucial that all measurement devices are properly calibrated.
The basic purpose of calibration is to maintain the quality and accuracy of measurement, as well as ensure that a particular measuring instrument is working properly.
Calibration of measurement devices may be required for the following reasons:
- When an instrument for measurement is new and must be checked
- After an instrument has been repaired or modified in some way
- After a period of time has elapsed since the instrument was last calibrated
- When a specified usage time has elapsed
- Before or after a critical measurement needs to be made
- After a certain event that may have affected the instrument, such as being exposed to shock, vibration, physical damage or changes in weather or environment
- Whenever measurements appear questionable or do not match those of other supporting instruments
- Whenever specified as a requirement, i.e. specified by a customer or recommended by the manufacturer
Calibration is not something that can be done by just anybody. There are specific calibrating instruments required that can only be used by accredited calibration experts following international standards. Thus, professional calibration services are necessary.
What is a Calibration Service?
Calibration services encompass anything related to the calibration of a measurement device done as a service by a qualified and certified professional. So as to ensure proper calibration, only those accredited by national testing and calibration authorities may conduct calibration services.
Calibration services can vary from one instrument to another, and from one field or industry to another. The methods involved may be manual, which often involves a series of steps; or automatic, wherein a system or device automatically detects the level of accuracy or uncertainty of a measurement device.
Once calibrated, instruments are given a calibration certificate or calibration level identifying the level of accuracy of the instrument’s measurements. These certificates do not contain any recommendation on the calibration interval, or when the instrument must be calibrated again. Interval time between calibrations can depend on a number of factors; however it is recommended for some instruments, such as the pendulum friction tester, that it be done on an annual basis.
If you require Australian calibrating services for slip resistance equipment, Slip Check is the name you can trust. Our calibration services are NATA accredited and backed by years of diverse professional calibration experience. No other organisation can offer you the same level of expertise and experience in slip resistance equipment calibration.
For more information, please get in touch with one of our local offices today.