Before mentioning the importance of calibrating of measuring instruments, it is useful to explain what the word calibration means.
Metrological properties of measurement and test instruments under the specified conditions (temperature, humidity, vibration, length hardness, electrical resistance, etc.) are compared with known reference standards, and the deviation of the indicated value from the specified reference standard is called calibration. Calibration of a device or measuring instrument is called adjustment.
Nowadays, the concept of calibration increases its importance and the number of organizations providing services in this field is increasing rapidly. Determining the error limits of the measuring instrument we use is of great importance for the accuracy of the measurement we have made.
When we send a device to the calibration laboratory, the following operations are performed respectively. The device is physically cleaned and maintained. After waiting for an ideal period under laboratory conditions, the value produced by the reference production source is connected to the device to be calibrated.
The value generated by the reference generation source is compared with the value displayed on the display of the meter and the difference is determined as error. Of course, in fact, complex mathematical calculations and parameters are used during this procedure.
Accreditation requirement is provided for companies providing calibration services. In fact, although accreditation is voluntary and does not require obligation, it is important to choose an accredited company for the reliability of the service provider. The accreditation certificate issued has international validity. The whole calibration process is connected to certain procedures to ensure the measurement quality and safety.
Why is calibration of measuring instruments important?
Device and system calibrations should be performed at determined periods in order to eliminate problems, to remove human life from danger and to gain economic benefit. Devices used in decision-making (testing, inspection, design, R & D, diagnosis, treatment, monitoring, etc.) should be calibrated. Medical calibration is especially important for human life. If the device is not calibrated, it will mislead the physician and incorrect diagnosis and treatment will result in irreparable errors.
When we increase the number of these examples, we see that measuring devices are an indispensable part of our lives. Inaccurate measurement results obtained from measuring devices cause loss of time, labor and most importantly prestige for us. Rising cost and competition remind us once again that we need to use the devices we have in the most efficient way. With preventive maintenance, repair and calibration services, the life of the devices and systems is increased by 30% on average, repair costs are reduced by 50% and investment costs are reduced by 20%.
When is calibration required?
– If the device has never been used (ie new)
– If the device is not used in accordance with the instructions for use
– If malfunctions have occurred in the device
– If it is not maintained at specified intervals
– If the adjustment mechanisms have been interfered
– If results from the device are suspected
– If the device has failed or has seen a mechanical impact
needs to be calibrated. This extends the life of the device and reduces the cost.
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