On-Site Calibration Process

If you work with electronic or mechanical instrumentation of any kind, the equipment you use will require regular maintenance. That maintenance should include calibration. GNW is a leading calibration services provider with over 40 years of experience in the on-site calibration process. 

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Introduction To On-Site Calibration

Going without calibration for a significant time is likely to lead to faults, inaccuracies and inefficient operation, as well as a higher likelihood of accidents and injuries.

In many cases, insufficient maintenance of equipment may result in a voided warranty or issues with your insurance.

GNW Instrumentation offers on-site calibration services tailored to a wide range of industries and machines.

ISO 9001-2015 accredited

ISO 9001-2015 accredited

Audited annually by European Certification Group

Audited annually by European Certification Group





What Is An On-Site Calibration Process?

On-site calibration involves a visit from specialists to your site or premises, enabling them to test, adjust and maintain equipment without removing it from the environment in which it usually operates.

This approach is often favoured above the off-site alternative, as it is often quicker – which means less downtime. What’s more, there is less likelihood of machinery being damaged in transit, or of the calibration being undertaken in an environment that does not reflect your usual working conditions.

GNW Instrumentation offers on-site calibration services to a wide range of industries, including:

If you do not feel that the sector in which you operate is reflected above, don’t hesitate to get in touch with the GNW team – as this is by no means an exhaustive list.


From start to finish, our approach to on-site calibration is straightforward, efficient and transparent. Once a client has contacted us via our site, call 01704 536 010 or email info@gnw.co.uk.

We’ll ask you to complete a form, which will include details of all equipment requiring calibration. We will check to confirm that the work can be done – and then we’ll be in touch to offer a free, no-obligation quote as soon as possible.

We’ll assess the information that you have given to us before arranging to visit your site or premises to begin the process – at a date and time that suits you. We will give you details of the work we intend to do and confirm that you are happy to proceed.

During our communications, we’ll give you a clear idea of what will happen on the day, including any downtime that may be involved, so you can plan accordingly. In some instances, we may need to take equipment off-site to work on it effectively during the calibration process.

Of course, if this is to be the case, we will provide you with details of how we will do this – including the safety measures we will take – and we will also provide you with a clear timescale for its return so that you are always in the loop.

If we find that certain pieces of equipment or machinery are experiencing maintenance issues, we will contact you to check whether you wish us to proceed with a repair. If you confirm, we will repair it and include the cost in our fee.

If you do not wish for us to repair the equipment, we will be happy to dispose of it on your behalf.

Calibration is directly followed by verification. As soon as we have completed the process, we’ll provide you with a certificate of confirmation for your records – so you’ll have a record of what was done and when it took place.

Regulation And Quality Assurance

The team at GBW Instrumentation has been providing exemplary on-site calibration services for over 40 years. We are an ISO 9001 accredited company that is compliant with the very highest industry standards.

Our company is accredited by SafeContractor, ensuring that we adhere strictly to all current health and safety regulations. We also operate as part of Avetta’s supply chain network. Avetta is a supplier management body that carefully vets and prequalifies organisations that employ safe and sustainable business practices.

We are also UKAS accredited. UKAS is the National Accreditation Body for the United Kingdom that assesses calibration services across the country.

You can learn more about our accreditation here.

Get In Touch Today

If you have any further questions on the subject of on-site calibration or would like to discuss the requirements of any equipment or machinery used by your organisation – or if you’d like to find out more about GNW Instrumentation and the work we do – please don’t hesitate to make contact with our specialist team today.

You can call 01704 536 010, email info@gnw.co.uk or fill in our straightforward online form. We’ll gladly provide you with any information and advice you may require.

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