Instrument Calibration
Eliminating or minimising factors that cause inaccurate measurements is a fundamental aspect of instrumentation design.
Welch Instrumentation Limited provides calibrations on all instrumentation tailored to the customer’s need. We use the highest specification equipment that can provide paperless certification. All calibrations are carried out to the highest standard by our experienced team.
Our services include, but are not limited to:
Flow Calibration
Flow metre calibration is the process of verifying the accuracy of a flow metre against a reference point.
Calibration usually involves measuring the flow rate of a known volume of liquid, gas or pressure passing through the flow metre. This can be done by a comparison measurement using a reference meter in situ, by an electronic verification or by a wet calibration or using an IBC.
Calibration by comparison and calibration by verification reduces the need for downtime on your process, as the flow meter can stay in the line, reducing costs.
Gas flow metre calibration
Mass flow calibration
Thermo-flow calibration
Magnetic flow metre calibration
Vortex flow calibration
Ultrasonic flow flow calibration
Pressure Calibration
A pressure gauge/transmitter is a device used to measure the pressure of a gas or liquid. There are many different types of pressure instruments, each designed for specific applications.
Pressure transmitters and gauges must be calibrated regularly to ensure accurate readings. To ensure your instruments are within tolerance we have the equipment to pump through the range to measure the output either at the gauge itself or on the DCS/SCADA systems.
Pressure gauge calibration
Differential pressure transmitter calibration
Pressure transmitter calibration
Hydrostatic pressure calibration
LP and HP
Analytical Instrument Calibration
Analytical Instrument Calibration is the process of setting up an analytical instrument so that it provides accurate results.
There are many factors that can affect the accuracy of an analytical instrument, so it is important to calibrate the instrument regularly. The process of calibration involves adjusting the instruments to match a known standard. This can be done using a variety of methods, including manual adjustment, known standard solutions. Each method has its own advantages, so it is important to choose the right method for the instrument and the application.
Conductivity
pH
Sample maintenance
Precision Level Calibration
Precision level calibration is a critical process in many industries, where accurate measurements are essential.
There are many different methods and technologies that can be used to achieve precision level measurements across all industries including oil and gas.
Radar
Guided wave radar
Ultrasonic
Vibronics
Displacers
Float
Temperature Calibration
Calibration involves using a known reference temperature and comparing the sensor’s reading to that reference. If the sensor is inaccurate, the calibration process can be used to adjust the readings so that they fall within tolerance.
Calibrating a temperature sensor is an important part of ensuring its accuracy. By taking the time to calibrate the sensor, you can ensure that it will provide accurate readings in your application. Calibrations can be carried out using a temperature hot block or by simulation.
Welch Instrumentation have extensive experience and knowledge of temperature sensors and can provide accurate calibrations.
RTD
Thermocouple calibration
Temperature switches
High temperature calibration
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 instrument calibration, and why is it important?
Instrument calibration is the process of verifying and adjusting instruments to ensure accurate measurements. It is crucial to eliminate inaccuracies and maintain measurement reliability.
What types of instruments can Welch Instrumentation calibrate?
Welch Instrumentation provides calibrations for various instruments, including flow meters, pressure gauges, analytical instruments, precision level instruments, and temperature sensors.
How does flow meter calibration work, and why is it necessary?
Flow meter calibration involves verifying the accuracy of flow meters by comparing their measurements to a reference point. It’s essential to ensure precise measurements and reduce downtime in processes.
What are the different types of flow meter calibrations offered?
Welch Instrumentation offers various flow meter calibration services, such as gas flow meter calibration, mass flow calibration, and ultrasonic flow meter calibration, to name a few.
Why should pressure gauges and transmitters be regularly calibrated?
Pressure instruments need regular calibration to maintain accurate readings. Welch Instrumentation offers calibration services for pressure gauges, differential pressure transmitters, and hydrostatic pressure instruments.
What is analytical instrument calibration, and why is it necessary?
Analytical instrument calibration involves adjusting instruments to provide accurate results. Regular calibration is essential due to factors that can affect accuracy, ensuring precise analytical measurements.
How does temperature sensor calibration work, and when is it required?
Temperature sensor calibration involves comparing sensor readings to a known reference temperature. This process ensures accuracy and reliability in temperature measurements, and it is typically required to maintain instrument precision.


