Superior performance temperature sensors, ratio and fiber optic, for challenging and harsh operating environments in applications ranging from -40 to 3000ºC (-40 to 5432ºF).

Marathon MM The New Vision in IR Thermometry! The Marathon MM series is designed to bring greater flexibility and adds high-performance features to a broad range of process monitoring applications in temperature range of minus 40 to 3000°C (-40 to 5432ºF).
Marathon MR High performance two-color sensor with two-way digital communications, dirty window alarm, and fast response time. Specially designed for targets obstructed by smoke, steam, particulates in harsh, high temperature applications from 600 to 3000ºC (1112 to 5430ºF).
Marathon FA Marathon FA fiber optic infrared sensors are designed to measure temperature ranges from 250 to 3000ºC (482 to 5430ºF) in highly confined installations in harsh industrial environments, otherwise inaccessible by non-fiber optic thermometers.
Marathon FR Marathon FR fiber optic ratio thermometer accurately measures targets that are: in confined installations, obstructed by smoke, steam, particulates, or smaller than the instrument field of view or located within strong electromagnetic fields.