Oil and Gas Process Solutions
Reliable measurement, monitoring and control solutions for upstream, midstream and downstream oil and gas applications.
Over 45 Years in Operation
1000's of UK Installations
Supporting 100's of UK Sites
Oil and gas processes rely on accurate measurement and reliable monitoring to ensure safe, efficient and continuous operation.
From upstream production and gas handling through to refining, storage and distribution, process conditions can be demanding, with high pressures, extreme temperatures and hazardous environments requiring robust and dependable instrumentation.
Allison Engineering has extensive experience supporting oil and gas applications, supplying solutions for flow measurement, flow detection, gas analysis and process control. Our approach is application-led, ensuring the correct technology is selected based on process conditions, safety requirements and operational objectives.
We work with proven technologies and leading manufacturers to deliver solutions that perform reliably in real-world environments, supporting both new projects and existing installations.
Oil & Gas Applications
Allison Engineering supports a wide range of oil and gas applications, from core process measurement through to protection, monitoring and analyser systems. Explore some of the common applications we support below.
Nitrogen Purge & Blanketing Monitoring
Analyser Sample Flow Monitoring Using Flow Switches
Chemical Injection Flow Monitoring Using Thermal Flow Switches
Flare Gas Metering Using Thermal Mass Flow Measurement
Fugitive Emissions Monitoring & Methane Leak Detection
Pump Protection Using Flow Monitoring and Flow Switches
High Temperature Flow Switches & Flow Meters for Combustion Air
SIL & SIS Compliant Process Control Instrumentation
Understanding Reynolds Number in Flow Measurement
Combustion Air Flow Measurement
On-Site Nitrogen Generation for Industrial Applications
Atmospheric Vent Gas Monitoring
Analyser Shelter Air Flow Monitoring
Why Choose Oil and Gas Process Solutions
Designed for Harsh Environments
Solutions are selected to operate reliably in high pressure, high temperature and hazardous area conditions, including ATEX-rated environments.
Proven Industrial Technologies
We work with globally recognised manufacturers and proven technologies that are widely used across oil and gas applications.
Application-Led Approach
We focus on understanding the process first, to ensure the right technology is selected for each specific application.
Reliable Performance in Critical Systems
Instrumentation is selected to provide dependable performance in safety-critical applications where failure is not an option.
Flexible Installation & Integration
Solutions are available for a wide range of installation requirements, from inline systems to insertion and retrofit applications.
Supports Safety, Efficiency & Compliance
Accurate measurement and monitoring help reduce risk, improve efficiency and meet regulatory and reporting requirements.
Need information or advice?
Speak with our friendly, expert team to discuss your requirements and find out how we can help you.
Full Service UK Solutions
Allison Engineering supports oil and gas projects from initial specification through to long-term operation, delivering complete solutions backed by technical expertise and ongoing support.
Specifications & Planning
Application review, technical consultation and product selection based on process conditions, safety requirements and installation constraints.

Supply & Commissioning
Supply of proven products and technologies with full support for installation, commissioning and complete system integration.
Support & Optimisation
Ongoing servicing, calibration, maintenance and technical support to ensure systems continue to perform reliably over time.
Oil & Gas Process Control FAQs
Explore common questions about process measurement and control in oil and gas applications, including flow measurement, monitoring and product or system selection.
Why is flow and process monitoring critical in oil and gas applications?
Flow and process monitoring are essential for maintaining safe and efficient operation across oil and gas systems. Accurate measurement ensures that processes such as chemical injection, combustion and gas handling are operating within safe limits.
In practice, monitoring helps prevent equipment damage, detect process issues early and support compliance with safety and environmental regulations.
What makes oil and gas applications challenging for instrumentation?
Oil and gas environments often involve extreme conditions, including high pressures, high temperatures, hazardous areas and aggressive fluids or gases.
Instrumentation must be robust, reliable and certified for use in these environments, with materials and designs that can withstand demanding operating conditions over long periods.
How are low flow rates monitored in high-pressure systems?
Low flow monitoring in high-pressure systems, such as chemical injection, requires highly sensitive instrumentation capable of detecting very small flow rates while operating under extreme pressure.
Thermal flow switches are widely used for this purpose, providing reliable detection without moving parts and maintaining performance in harsh conditions.
Why is flare gas measurement important?
Flare gas measurement is critical for emissions reporting, environmental compliance and operational control. Accurate measurement ensures that operators can quantify gas flaring and meet regulatory requirements.
In addition, reliable flare gas data helps improve process efficiency and identify opportunities to reduce waste and emissions.
What is the role of flow switches in oil and gas systems?
Flow switches are used to detect flow or no-flow conditions in critical systems. They are commonly used for pump protection, analyser flow monitoring and safety systems.
By providing early warning of process issues, flow switches help prevent equipment damage and reduce downtime.
How do I choose the right solution for my application?
Selecting the right solution depends on process conditions, fluid or gas type, pressure, temperature, hazardous area classification and the specific requirements of the application.
The most effective approach is to review the application in detail and match the technology to the process, ensuring reliable performance and long-term operation.
Our experienced team is available to offer information and advice for all types of oil and gas application.

Why Trust Allison Engineering
We are committed to delivering the highest standards across the specialist areas we support, combining proven products with practical engineering knowledge and dependable service.
Need Help Optimising Your Oil & Gas Process Control Systems?
Speak to our team to identify the right measurement and monitoring solutions for your application, from critical safety systems to process optimisation.












































