Founded in 1993, Hukx develops and manufactures high-accuracy sensors for measuring solar radiation and heat flux, with its headquarters in Delft, the Netherlands. The company supports customers worldwide from sensor selection and system integration through calibration and repair, and operates an ISO 9001-certified quality system alongside an ISO/IEC 17025-accredited calibration laboratory.
ISO 9001
ISO/IEC 17025
ISO 14001
ISO17025
Quality certification
Tasseron Sensors IncWith roots in a Dutch company founded in 1920, Tasseron Sensors Inc. manufactures sensors and controls for HVAC, building automation, and OEM equipment, including custom temperature-sensing solutions. The North American subsidiary opened in 2004 and now builds many products at its Montoursville, Pennsylvania, manufacturing facility, drawing on a group history that includes more than 200 million custom sensors sold. Tasseron produces more than 1,000 sensor models annually and works with OEMs to tailor designs to their applications.MONTOURSVILLE, PA
RAM Sensors, IncFounded by Ronald A. Miller in 1981, RAM Sensors manufactures industrial temperature-sensing devices, including custom designs, for customers worldwide. Now in its third generation of ownership, the Westlake company supports demanding applications across industries such as metalworking, aerospace, chemical processing and power generation. Its applications engineers help develop fit-for-purpose sensors, while its quality management system is registered to ISO 9001:2015.WESTLAKE, OH
COTEMP SensingCOTEMP Sensing makes and tests temperature sensors for demanding industrial environments, from nuclear power plants to cryogenic hydrogen systems. The company combines more than 80 years of expertise with manufacturing sites across North America, Europe, and Asia, and has installed more than 50 million sensors worldwide. Its capabilities include specialized testing and an ISO 17025-certified calibration laboratory, including a 300mm instrumented wafer with 49 thermocouple measurement points for semiconductor applications.WEST CHESTER, PA
Reuter-StokesFounded in Cleveland in 1956, Reuter-Stokes manufactures detection and sensing technology for harsh environments, from nuclear reactor monitoring and radiation measurement to industrial flame detection and downhole drilling. Its detectors are installed in every operational boiling water reactor globally, while its Helium-3, Boron-10 and hybrid radiation sensors also serve security, research and space applications. The company marks 70 years of precision sensing in 2026 and operates with nuclear quality programs including ISO 9001:2015, 10 CFR 50 Appendix B and an ASME “N” Stamp.TWINSBURG, OH