Weed Instrument has been supplying nuclear qualified temperature and pressure measurement instrumentation and fiber optic networking equipment for more than three decades.

Today, over 80% of all North American reactors rely exclusively on Weed Instrument temperature sensors for critical reactor coolant monitoring. Our nuclear qualified pressure transmitters are used for safety related measurements at over 20% of US nuclear power plants. Weed Instrument products have been qualified for use in all of the leading reactor technologies, including PWR, CANDU (PHWR) and APWR.

Weed Instrument is also proud to be a team member of the Generation III and III + reactor technology platforms, including the System 80+ and AP600.

In 1989, Weed Instrument acquired the manufacturing rights for the Foxboro N-E 10 Series Nuclear qualified pressure transmitters. In 1993, Weed Instrument purchased Camille Bauer, Inc. (Tobar/Westinghouse-Veritrak), a major US based manufacturer of pressure transmitters for the nuclear power industry. More recently, Weed Instrument seismically qualified, and became the exclusive US supplier of the Invensys (Foxboro) N-I/A Series combines the advantages of digital electronics with the reliability and performance of ion-implanted, micro-machined silicon.

Weed Instrument has continued to invest in nuclear engineering, manufacturing, and quality infrastructure, and we are now acknowledged to be one of the world's leading suppliers of temperature and pressure measurement instrumentation and fiber optic networking equipment to the nuclear power industry.

Weed Instrument is headquartered in Round Rock (a suburb of Austin), Texas. The company operates from a purpose built 50,000 sq. ft (4,600 sq. m) facility.

Weed Instrument maintains an on-site, National Institute of Standards and Technology (NIST) traceable Metrology Laboratory that provides comparison temperature calibrations from -80 °C to 600 °C (-112 °F to 1112 °F) on the International Temperature Scale of 1990 (ITS-90) for temperature sensors and instrumentation. We can also perform relative calibrations at the boiling point of liquid nitrogen. The Laboratory is equipped with fluidized baths, tube furnaces, standard platinum resistance thermometers and standard thermocouples. Time response testing is performed in full compliance with ASTM E-644. Our test reports are comprehensive and include, when required, "as found" and "as left" data.