Bespoke triaxial sensors manufactured in the UK for comprehensive inline inspection data capture
Triaxial sensors and triaxial sensor components are integrated into intelligent pigging technologies for exceptional accuracy and detail in inline inspection of utilities pipelines.
Continual monitoring and management of pipeline integrity is essential in oil and gas production, maintaining the flow and supply of vital fuels worldwide. MFL ("Magnetic Flux Leakage") technologies incorporating triaxial sensors detect loss, corrosion, deformation, damage and weaknesses in pipe walls, analysing and reporting on leakage levels to support the efficient, effective and accurate maintenance and repair of pipelines.

Complete visibility over pipeline integrity through accurate triaxial sensor technology
Triaxial sensors manufactured by OF Bell at our plant in County Durham in the UK measure axial, radial and circumferential measurements to measure and record to an exceptional degree of accuracy the depth, length and width of defects in the pipeline during routine inline inspection.
By capturing multiple MFL vectors in high resolution, triaxial sensors support pipeline operators' operations around the clock through comprehensive integrity management that protects supply, minimises risk and maintains regulatory compliance.
OF Bell manufactures bespoke triaxial sensors at our UK-based facility to the bespoke specifications of our clients, meeting unique performance and design requirements such as pigging tool size and backed by our triaxial sensor manufacturing and moulded plastics expertise that delivers reliable, consistent and quality-assured sensors for inline inspection.
Expert complex component manufacture of triaxial sensors for inline inspection by OF Bell's specialist electronics engineers
Triaxial sensors, also known as triax sensors and triaxial MFL sensors, are manufactured in-house by OF Bell at our UK base in Bishop Auckland, County Durham.
Experienced complex component and electronics engineers work in collaboration with our clients to understand their unique intelligent pigging and inline inspection technologies, exploring how triaxial sensors are to be applied in the field before providing expert advice and recommendations for device selection that will deliver optimal performance in situ.
This consultancy phase, backed by excellent understanding of hall cell technology and hall cell devices, supports clients in producing a product that's capable of scalable manufacture to budget without compromise on performance, incorporating testing procedures to ensure that components are selected for their reliability and durability.
In-house component assembly & injection moulding for complete triaxial sensor manufacturing in the UK
Pigging Products and Services Association ("PPSA") member OF Bell assembles and manufactures triaxial MFL sensors for intelligent pigging and inline inspection in-house at our UK facility, moving product designs through tooling, injection moulding and final assembly and testing under one roof with a unique combination of knowledge and skills that protects the commercial interests and intellectual property concerns of our inline inspection sector clients.
With 24/7 production capability, OF Bell's excellent lead times and low minimum order quantities mean clients no longer need to gamble with unreliable overseas supply and poor-quality manufacture. Would your triaxial MFL sensor and intelligent pigging production lines benefit from a reliable, UK-based supply chain partner?
In-house tooling & machining for triaxial sensor manufacture by OF Bell
OF Bell is a complete triaxial MFL sensor manufacturing partner to our clients, delivering complete components confidentially that are ready for integration into pigging tools and technologies through a unique combination of expertise and equipment.
Our dedicated toolroom machines the tools used in plastics injection moulding processes, making use of leading equipment including CAD systems and our 4-axis CNC for accuracy and consistency in every mould. During early-stage prototyping, 3D printing supports cost-effective and efficient production to aid proof of concept where required.

Complete triaxial sensor assembly & injection moulded component potting in the UK
Triaxial sensors for use in MFL technologies are assembled by OF Bell's precision electronics and complex miniature components team, professionally manufacturing and testing to ISO-certified standards to ensure consistency and reliability throughout production, in every unit.
Manufactured to our clients' bespoke designs and requirements, triaxial MFL sensor assemblies are potted to customer specifications, backed by advice from our expert team. Extensive knowledge and plastics expertise recommends effective primers and potting techniques for secure adhesion during pressure potting or vacuum potting processes, producing complete, hardwearing triaxial sensor component assemblies in-house that retain accuracy and performance levels throughout their lifetime.
Complete testing of robust triaxial sensor components
Following component assembly and potting using our in-house injection moulding facilities, each triaxial sensor component is fully tested by our team in line with processes developed collaboratively with our clients to replicate in-situ environments, and supplied with test data for complete quality reassurance in manufacturing.
Triaxial MFL sensors are applied in tough environments, and every component produced by OF Bell is designed, manufactured and tested to withstand 400 bar of pressure. Dispatched promptly across the UK and worldwide, triaxial sensors manufactured by OF Bell mean no delays, no long lead times and no expensive shipping or storage in your supply chain. UK-made triaxial sensors that are Made in Britain by a team with unique understanding of intelligent pigging and inline inspection deliver consistent reliability that keeps essential fuels flowing.
Complex triaxial sensors Made in Britain by OF Bell's miniature & complex component specialists
Since 1973, OF Bell has worked alongside clients in countless sectors, from oil, gas and utilities to medical, construction, consumer goods and household products, as a trusted manufacturing partner based wholly in the UK to deliver fully-assembled, tested and quality-assured complex electronic components, assemblies and moulded plastics that form a vital part of supply chains across the UK and worldwide.
ISO-certified, Bishop Auckland-based in County Durham, UK, and with over 50 years' experience, from confidential in-house product design and development to injection moulding, assembly and testing of precision electronic, electrical and plastic parts, miniature and complex components, including precision MFL and triaxial sensors, by OF Bell enable client businesses to achieve their full potential through reliable, confidential and complete complex component engineering.
Find out more about OF Bell's triaxial sensor manufacturing in the UK
OF Bell's expert complex component engineering team in Bishop Auckland, County Durham, delivers reliable, consistent and highly-accurate triaxial sensors that are rated by the intelligent pigging sector as amongst the best in the business.
Get in touch to find out more about our manufacturing processes and to book a meeting with our team.