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Raytek® Marathon FA Infrared Sensors

Infrared Temperature Solutions

Raytek Marathon FA Infrared Sensors
Key Features 
Temperature range: 500 to 2500ºC (932 to 4532ºF)
Rugged fiber optic IR sensor for very confined installations
Supports up to 32 Marathon Series sensors on a multipoint network
Provides simultaneous analog and digital outputs
Included Raytek DataTemp® Multidrop and Field Calibration software
Fiber cable optic assembly withstands up to 315°C (600°F); NEMA-4 rated
Programmable relay output: temperature setpoint and "failsafe"
Background radiation compensation
Advanced signal processing: Peak Hold and Average
Internal LED display and Marathon user interface
Ambient operating temperature: 0º to 60ºC (32º to 140ºF)
Ambient operating temperature with water cooling option: 0º to 150ºC (32º to 300ºF);
Manuals: 

Product Overview

The Marathon FA Fiber Optic Temperature Sensor consists of a rugged fiber optic cable, plus optical head assembly connected to an electronics housing containing the detector, processing electronics, internal user interface/LED display, and termination connections for field wiring. These infrared sensors maintain targets in highly confined installations in harsh industrial environments, otherwise inaccessible by non-fiber optic thermometers. The assembly accommodates a small bend radius for threading through tight spaces.

Marathon FA thermometers maintain high accuracy (± 0.3% of temperature) and fast response time of 10 mSec over the ambient operating temperature range from 0º to 60ºC (32º to 140ºF). The fixed-focus optical head consists of a small stainless steel cylindrical housing and lens assembly. The optical head accommodates an air-purge accessory to prevent lens contamination and the fiber optic cable is protected by metal armor.

The Marathon FA Fiber Optic Temperature Sensors include Raytek DataTemp Multidrop software to enable easy and consistent installation, configuration and data capture.

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