Instrument Commissioning
Responsible for commissioning and overseeing the installation of various equipment, plants, and systems on-site.
Process instrument commissioning is the process of verifying that an instrument meets its design specifications and is suitable for its intended purpose. This includes testing the instrument’s functionality, accuracy, precision, and stability.
Commissioning commissioning of process instrumentation also involves analytical instrument calibration, which ensures that the instrument produces results that are traceable to a known standard. Once an instrument has been commissioned, it is ready for use.
Our process instrumentation commissioning services include , but are not limited to,
Flow Meter Commissioning
Flow commissioning is the process of verifying and adjusting the flow of fluid through a piping system.
Flow commissioning aims to ensure that the system is operating at peak efficiency and that all safety regulations are being met. Flow commissioning can be performed on new or existing systems. Welch Instrumentations engineers will expertly provide you with a safe, accredited and reliable flow commissioning service, including:
Certified engineers
Installation checks – verifying earth connections and connecting sensors to electronics if necessary
Configuration of the flow meter
Flow meter testing
Level Commissioning
Level commissioning is the process of using tank dimensions and product knowledge to set up level data unique to the tank it’s being installed on.
This ensures that the level being read will be at its most accurate even with external influences, for example, probes intruding within a radar beam. The process typically involves using site drawings to enter correct empty and full distances and then to produce satisfactory mapping for the installation.
Once the measurements have been taken, the data is then compared with either a manual dip of the tank to get a known level or fed in through flow meters to compare. All our on-site process instrumentation commissioning will come with a printout of the settings within the meters for the customer’s reference.
We also provide analytical instrument calibration when conducting this as it will provide you with the most accurate readings possible at every stage. Whether it is a large-scale project or a much smaller unit, we have the tools and experience to provide quality assurance and reliable service every time.
Pressure Commissioning
Pressure commissioning is a process used to validate the performance of pressure systems and components.
Pressure commissioning involves testing the system under various operating conditions to ensure it meets all safety and performance requirements. The pressure commissioning of process instrumentation can be performed by a qualified engineer or technician.
- Advanced high-pressure testing
- Water pressure commissioning
- Air pressure commissioning
- Pressure pump commissioning
- Differential pressure commissioning
- Hydrostatic level commissioning
When it comes to each of these elements, it is important to make sure you are not forgetting the importance of analytical instrument calibration. Each piece of machinery will need to be perfectly calibrated to ensure minimal downtime and accurate information across the board.
About Welch Instrumentation
Specialists in industrial process instrumentation, control, and measurement for various industries both in the UK and Worldwide markets.
With a reputation for being thorough, reliable, and responsive, our aim is to provide customers with high-quality and competitive service. We have systems in place to ensure health and safety are the priority.


Why choose us?
We have been delivering exceptional calibration engineering for over 15 years across a multitude of sectors, ranging from wastewater to oil and gas. For information on specific projects, please visit the projects tab.
Expertise
Our deep industry knowledge allows us to provide tailored solutions that address the unique challenges and regulatory requirements of each sector.
Comprehensive Services
We offer a full range of services that cover the entire lifecycle of your instrumentation and control systems.
Commitment to Quality
We adhere to the highest standards in our work, ensuring that your systems are not only high-performing but also compliant with all relevant industry regulations.
Reliable Support
Welch Instrumentation is dedicated to keeping your systems up and running, providing peace of mind and continuity for your business.
Frequently asked questions
What is the commissioning process?
There are a few different ways to commission an instrument.
One way is to use a step-by-step approach, starting with the most basic tests and progressing to more complex ones. Another way is to use a top-down approach, starting with the most complex tests and then working down to the simpler ones. Whichever approach is used, the goal is to verify that the instrument is fit for use
Commissioning an instrument can be a time-consuming process, but it is essential to ensure that the instrument is accurate and reliable. In some cases, commissioning may need to be done on a regular basis to account for changes in the environment or in the way the instrument is used.
What is instrumentation commissioning?
Instrumentation Commissioning is a process of verifying and ensuring that all installed instruments, equipment, control loops and systems meet the functional requirements specified in the design documents. During this process, technicians test, calibrate and adjust instruments to ensure they are reading accurately and responding properly to inputs.
How long does the commissioning process take?
The duration of the instrumentation commissioning process varies depending on factors such as the complexity of the system, the amount of instruments needing to be commissioned, and other site-specific variables. Generally, the commissioning process can take anywhere from a few days to several weeks.
What is included in the commissioning?
Instrumentation commissioning includes many tasks such as test and functional checks, and verification of wiring diagrams and loop diagrams. In addition to this, we also ensure calibration of instruments, checking for proper operation and setting up communication networks. Additionally, the commissioning process may include writing technical reports, ensuring proper documentation and operator training.
What are the benefits of this?
Instrumentation commissioning provides many benefits such as improved accuracy of monitoring instruments and systems, increased safety, reduced downtime due to equipment malfunctions, and improved efficiency. Additionally, commissioning helps to ensure that all plant operations meet the specified design criteria.
What are some best practices for instrumentation commissioning?
Best practices for instrumentation commissioning include thorough review and testing of all documents, close communication between project stakeholders, detailed verification and calibration of instruments, proper documentation of all processes and testing, and scheduling regular maintenance and inspections. Following these best practices can help to ensure a successful commissioning process.
Who does this process involve?
Instrumentation commissioning typically involves teams of professionals such as engineers, technicians, and project managers. Additionally, other stakeholders including the owner, designers, and operators can also be involved in the commissioning process.


