Designing and manufacturing high quality gas analysers for over 40 years

Our Company

Signal Group Ltd develops and manufactures gas analysers for the professional testing of VOCs, vehicle and engine emissions, tobacco smoke, impurities in special gases, power station emissions, catalyst efficiency, and boiler/burner combustion emissions. 

We offer service and maintenance contracts with complete customer support and often offer back up instrumentation in the event of failure.

Other services provides include system audits and linearity checks using high stability analysers and traceable gas standard

Our History

Since 1977 the company has been manufacturing state-of-the-art high-end reference gas analysers based on flame ionisation detectors (FID) for Hydrocarbons (THC, TOC, VOC, NMHC), chemiluminescence detectors (CLD) for NOx, Paramagnetism for Oxygen, and a range of non-dispersive infra-red (NDIR) technologies for a wide variety of gases. Our range of high quality ancillary equipment manufactured by us supports the ability to develop custom systems for our customers.
Signal’s highly experienced support team helps customers to specify the most appropriate monitoring equipment whilst also delivering maintenance and service contracts to ensure accurate and reliable monitoring. High calibre and well-trained representatives around the world offer the same high levels of sales and service to customers in Europe, USA, China, Asia/Pacific Rim, South America and the Middle East.

Our Vision

To become the reference in innovative gas analysis technologies.

Our Mission

To always develop and manufacture high quality gas analysers to help our customers globally to improve the performance of their assets within a safe and compliant environment.

Our Values


Honesty, integrity, safety.


Customer focus, communication, teamwork.


Open-mind, adaptable, improvement


Knowledge, experience, quality.