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•  Temperature range: 375 to 3000°C (700 to 5000°F)
Standard sensor with thru-the-lens focusable optics
Economical miniature sensing head
Convenient, standard DIN-rail mounting
4-20 mA two-wire signal conditioner/transmitter
InfraRail IR Sensor
InfraRail IR Sensor InfraRail IR Sensor Front InfraRail IR Sensor Side
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Product Description

The InfraRail® series successfully combines a signal conditioner and two-wire transmitter in one modular DIN-rail infrared thermometer. Now, you can integrate temperature measurement with other relays and signal conditioners already on your process line. The InfraRail infrared thermometer can be wired directly into any existing 24 Vdc power supply or connected to a power supply ranging from 16 to 40 volts, making it the ideal option for OEMs and users in furnaces and induction heating systems, as well as steel and glass applications.

The basic InfraRail system consists of a temperature sensor, electronic module, 4 meters (12 feet) of interconnecting cable and connectors, as well as an operator's manual.

Sensing Heads & Applications

All InfraRail temperature sensor heads have NEMA 4 (IP 66) rated housings. These sensors are powered by internal photovoltaic cells and don't require special power sources. Depending on your application requirements, you can use one of two sensing heads:

  • Type E - miniature, fixed focus lens sensor for basic temperature measurement requirements with a non-sighted focus at 762mm (30")
  • Type S - thru-the-lens, single lens reflex (SLR) focusable optics temperature sensor for more discriminating sensing requirements where pinpoint focus and aiming are essential. These sensors are available with InGaAs detectors for lower temperature applications down to 375°C (700°F) or silicon detectors for higher temperature applications from 550 to 3000°C (1000 to 5000°F)
Sensing Head
Temp Span
Ambient Temperatures*
Type E
0.7 to 1.0 µm
800 to 3000°C
1400 to 5000°F
-17 to 90°C (0 to 200°F)
without cooling
Small sensor (317mm/1.25" diameter by 1016mm/4" length), economical option for basic temperature sensing requirements
Type S
0.7 to 1.0 µm
550 to 3000°C
1000 to 5000°F
-17 to 90°C (0 to 200°F)
without cooling
Higher temp discriminating sensing requirements where pinpoint focus and aiming are essential, (i.e. semiconductor and steel processes)
Type S
1.5 to 1.6 µm
375 to 800°C
700 to 1400°F

-17 to 80°C (0 to 175°F)
without cooling

Lower temp discriminating sensing requirements where pinpoint focus and aiming are essential (i.e. induction heating and nonferrous metals)
*Some models are restricted to sensor ambient of -17 to 65°C (0 to 150°F) and emissivity setting of 0.30.


The InfraRail system is designed to operate with your existing power source that is in the range of 16 – 40 Vdc. However, if this source is not available, we offer optionally DIN-rail mountable power supplies 110 or 220 Vac input.

A full list of accessories, as well as specifications and product dimensions are available in the InfraRail product brochure.

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