How Often Should I Calibrate My Instrument?

One of the most frequent questions we receive at Chevrier Instruments Inc. is: "How often should I calibrate my instrument?" The answer depends on several factors, but regular calibration is essential to ensure the accuracy and reliability of measuring instruments, whether they are backflow preventers (DAR), pressure gauges, or thermometers.

So we're going to break down this question for you to help you see things more clearly!

The General Standard: Annual Calibration

In most cases, the recommended calibration frequency is once per year. This unwritten standard is widely accepted across industries and ensures that your instruments remain compliant with regulations and provide reliable measurements. However, several factors can influence this frequency, and it’s important to consider them when determining the right calibration interval for your device:

Measurement drift history:

If an instrument frequently shows deviations in its readings, more frequent calibration may be necessary.

Industry or governmental standards:

Certain industries, such as food, pharmaceuticals, or healthcare, have strict calibration requirements.

Manufacturer recommendations:

Some devices, like personal gas detectors, need more frequent calibration—sometimes every six months.

Natural wear:

The durability of an instrument affects how often it needs calibration. For instance, a metal ruler may stay accurate for years, while an oxygen sensor will wear out more quickly.

Frequency of use:

The more an instrument is used, the more likely its measurements may drift from their original accuracy.

Measurement importance and precision:

In cases where extremely accurate measurements are critical, regular calibration is indispensable.

Cost of calibration:

Sometimes, the cost of calibration must be weighed against the criticality of the instrument.

Extending the Calibration Period:

It's possible in certain cases. While annual calibration is a good practice for most instruments, in some cases, it’s possible to extend this period to two years, or even five or ten years, depending on the type of instrument and its use. For example, calibration weights or gauge blocks are instruments whose physical properties change very little over time. These instruments can often be calibrated every five years or even every ten years without compromising accuracy.

A Personalized Decision

The frequency of calibration should be determined by considering the instrument's performance history, manufacturer recommendations, industry standards, and the importance of the measurements in your operations. At Chevrier Instruments Inc., we understand that every customer has unique needs, and we’re here to guide you in finding the best approach to maintaining the accuracy of your instruments. Remember, the validity period of a calibration certificate is at the customer’s discretion, based on these various factors.

If you have any questions or would like to know more about the calibration of your instruments, please don't hesitate to contact us. Rest assured that at Chevrier Instruments, we comply with international quality standards and hold the necessary accreditations to offer you impeccable service. The Chevrier Instruments team will be happy to guide you and offer you the best advice!