Process Instrument Solutions is an official UK supplier of Sierra Instruments offering thermal mass flow solutions for industrial gas measurement across a range of demanding applications.

Process Instrument Solutions delivers high-quality process instrumentation, calibration, and automation services to industrial clients across the UK. We support businesses in improving measurement accuracy, reducing downtime and optimising plant performance through a complete lifecycle approach—from initial specification and engineering design through to installation, commissioning and ongoing maintenance. Our services include: • Process instrumentation supply & specification • Control & automation solutions • Installation & commissioning • UKAS-traceable calibration & maintenance • Turnkey project delivery • Lifecycle support through our SolutionsPLUS programme With a team of highly skilled, CompEx-certified engineers, we provide safe and compliant services in both standard and hazardous environments. As an approved partner of leading manufacturers, we ensure our clients receive reliable, high-performance solutions tailored to their process requirements. We work across a range of industries including food & beverage, energy & power, water & wastewater, and chemical processing—delivering practical, engineered solutions that improve efficiency, compliance and long-term reliability. At Process Instrument Solutions, we focus on building long-term partnerships with our clients, offering responsive support and technical expertise at every stage of the process lifecycle. 📩 Get in touch to discuss how we can support your instrumentation, calibration and automation needs.