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  • Temperature range from 0-1000°F
  • Sensing head available with standard or close focus optics
  • Provides target temperature readings with 1% accuracy
  • Available with a water-cooled housing for high temperature ambient atmospheres
  • Spectral Response = 8 to 14 microns
  • Emissivity = 0.1 to 1.09 digitally adjustable increments of .01
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The compact Raytek Thermalert GP infrared temperature sensor is designed to be paired with the Raytek Thermalert GP Monitor to form a versatile, two-piece temperature monitoring system that combines a compact, value-priced monitor with a rugged, accurate infrared sensing head. The Raytek Thermalert GP Monitor is sold separately.

The Raytek Thermalert GP infrared temperature sensor targets temperatures from -18 to 540ºC (0-1000ºF) with 1% accuracy and has a spectral response of 8-14 microns. Emissivity is adjustable from 0.1 to 1.09 in increments of 0.01. The Raytek Thermalert GP infrared temperature sensor is available without laser sighting (GPR Series) or with an integrated coaxial Class 2 laser connected to the remote activation switch box via the included 4 m (13 ft) cable (GPS Series). Both models of the Raytek Thermalert GP infrared temperature sensor are available with an optional close focus sensing head. For extreme environments, optional air/water cooled housing with air purge collar is also available.

Infrared Temperature Measurement - Technology Explained

Raytek infrared thermometers measure temperature from a distance by detecting the amount of thermal electromagnetic radiation emitted from the object being measured. This allows users to accurately measure surface temperatures in hazardous or hard-to-reach places, or other situations in which non-contact temperature measurement is desirable. Infrared thermometer technology is useful in a wide range of applications – including industrial, laboratory, food service, fire fighting, hobby and home use.

While the technology is relatively simple, the myriad of names given to these devices can be confusing. "Laser Thermometers" makes reference to the laser that helps aim the thermometer. "IR Sensors" and "IR Thermometers" make use of a common abbreviation for "infrared". "Non-Contact Thermometers" is descriptive of the device's ability to measure temperature from a distance. "Radiation Pyrometers" is a scientific/technical term for these devices.


Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.


Please consider these optional accessories.