Alphasense Ltd

Alphasense Ltd, now part of AMETEK, is a gas and particulate sensor manufacturer founded in 1996 and headquartered at Sensor Technology House in Great Notley, Essex, United Kingdom. The company operates from a purpose-built facility with advanced automation and holds ISO 9001:2015 certification for its design and manufacturing operations. Alphasense produces one of the industry's broadest gas sensor portfolios: oxygen sensors in both lead-free galvanic (O2-A2-GLF, O2-A2S-GLF) and long-life amperometric (LFO2-A1, LFO2-AL for up to 95% O2, LFO2-AH for trace 0-2% detection) configurations; electrochemical toxic gas sensors for CO, H2S, NO, NO2, SO2, and dual combinations; specialty toxic sensors covering O3, Cl2, PH3, NH3, HCN, HCl, EtO, and H2O2; PID VOC sensors in the PIDX series for volatile organic compound detection; NDIR carbon dioxide sensors; flammable gas sensors for methane/LEL and hydrogen monitoring; and optical particle counters including the OPC-N3 measuring PM1, PM2.5, and PM10. Their sensors serve gas detection instrument manufacturers worldwide across industrial safety, environmental monitoring, and air quality applications. In water and wastewater facilities, Alphasense sensors are used for H2S leak detection around lift stations and digesters, Cl2 monitoring in disinfection systems, NH3 detection at biosolids processing areas, and CH4 monitoring at anaerobic digesters and biogas recovery installations.