Infrared Temperature Sensors

Infrared temperature sensors have a variety of applications. As they have no need to 'touch' the surface they are measuring, they are a highly efficient solution to temperature measurement in all kinds of environments, and in particular high-temperature measurements in challenging conditions. They are a key component of thermal imaging cameras and are so vital in energy conservation and maintenance, and are also used in medical applications in IR thermometers.

How Do Infrared Temperature Sensors Work?

Infrared (IR) temperature sensors emit an infrared energy beam focused by a lens onto a surface to detect the surface or object temperature. The reflected beam is received back in the sensor which converts the energy to an electrical signal that can be displayed in units of temperature. The sensor compensates for ambient temperature variation to give an accurate temperature reading.

Measuring Different Surface Materials

With different temperature ranges, sensor types and outputs available, it is important to choose the infrared temperature sensor that is appropriate for your application. Painted surfaces, paper, thick plastics, food, water, asphalt, rubber, wood and other non-metals all have a high emissivity. These materials can be measured easily using general-purpose sensors with a fixed emissivity setting. Sensors with an adjustable emissivity setting allow fine-tuning of the measurement accuracy for use on partially reflective materials such as metals.


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Description Price Sensor Type Response Time Accuracy Cable Length Supply Voltage Minimum Temperature Sensed Output Type Communication Protocol Light Source Maximum Temperature Sensed Housing Material Interface Mounting Type Diameter
RS Stock No. 553-321
Mfr. Part No.PC151MT-0
BrandCalex
TWD8,466.00
Each
units
MA Output Signal 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
RS Stock No. 822-6421
Mfr. Part No.D6T8L06
BrandOmron
TWD1,245.00
Each
units
MEMS Thermal - ±3 °C - - +5°C Serial - - +50°C - - - 8.3 mm
RS Stock No. 553-349
Mfr. Part No.PC21MT-0
BrandCalex
TWD7,355.00
Each
units
MA Output Signal 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
RS Stock No. 100-0153
Mfr. Part No.PN151-K
BrandCalex
TWD6,089.00
Each
units
Type K Thermocouple 125 ms ±1.5 % 1m 6 → 28 V dc 0°C Alarm, Analogue NFC Infrared +1000°C ABS, Aluminium NFC Cable Mount 31 mm
RS Stock No. 779-4314
Mfr. Part No.CIRSPMHA201CTCRTMSD
BrandCalex
TWD20,083.00
Each
units
MA Output Signal 240 ms 1 % 1m - -20°C Alarm, Analogue - - +1000°C - - - 16 mm
RS Stock No. 133-6338
Mfr. Part No.PCAN201
BrandCalex
TWD11,696.00
Each
units
MA Output Signal 200 ms ±1°C or ±1% of reading 1m - -20°C CAN-Bus - - +1000°C - - - 16 mm
RS Stock No. 553-343
Mfr. Part No.PC21MT-1
BrandCalex
TWD7,839.00
Each
units
MA Output Signal 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
New
RS Stock No. 214-4075
Mfr. Part No.07300.0-00
BrandSTEGO
TWD1,333.00
Each
units
- 1.5 minutes s, 7 seconds s 2 % 2m - -40°C - - - +80°C - IO-Link - -
RS Stock No. 382-911
Mfr. Part No.RSCCSTCLT15K
BrandOptris
TWD7,935.00
Each
units
V Output Signal 25 ms (adjustable up to 999 s) 1.5 % 1m - -20°C Analogue - - +350°C - - - 12 mm
RS Stock No. 133-6336
Mfr. Part No.PUA8-301
BrandCalex
TWD16,340.00
Each
units
MA Output Signal 240 ms ±1°C or ±1% of reading 1m - -40°C Analogue - - +1000°C - USB - 16 mm
RS Stock No. 779-4301
Mfr. Part No.PM-MA-21-CT-CRT-MSD
BrandCalex
TWD15,339.00
Each
units
MA Output Signal 240 ms 1 % 1m - -20°C Alarm, Analogue - - +1000°C - - - 16 mm
New
RS Stock No. 214-4076
Mfr. Part No.07301.0-00
BrandSTEGO
TWD1,234.00
Each
units
- 2.5 minutes s, 5 seconds s - - - -40°C - - - +70°C - IO-Link - -
RS Stock No. 839-0718
Mfr. Part No.LCT
BrandCalex
TWD8,501.00
Each
units
MA Output Signal 240 ms - 1m - 100°C - - Infrared +1000°C Stainless Steel USB - 20 mm
New
RS Stock No. 205-3248
Mfr. Part No.PMO-151-HT-C
BrandCalex
TWD7,495.00
Each
units
- 0.24 s 1 % 1m 24 V dc 0°C - - - +500°C - - - -
RS Stock No. 134-8550
Mfr. Part No.TW7000
TWD28,168.00
Each
units
MA Output Signal <100 ms <±1 % - - +50°C Analogue - - +500°C - - - 30 mm
RS Stock No. 553-337
Mfr. Part No.PC21MT-4
BrandCalex
TWD7,839.00
Each
units
Type K Thermocouple 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
RS Stock No. 133-6337
Mfr. Part No.PCAN21
BrandCalex
TWD10,066.00
Each
units
MA Output Signal 200 ms ±1°C or ±1% of reading 1m - -20°C CAN-Bus - - +1000°C - - - 16 mm
RS Stock No. 553-327
Mfr. Part No.PC21MT-0WJ
BrandCalex
TWD15,363.00
Each
units
MA Output Signal 240 ms 1 % 1m - 0°C Alarm, Analogue - - +250°C - - - 16 mm
RS Stock No. 839-0708
Mfr. Part No.PC151HT-0
BrandCalex
TWD7,359.00
Each
units
MA Output Signal 240 ms - 1m - 0°C Current - Laser Light +500°C Stainless Steel - - 18 mm
RS Stock No. 161-8103
BrandRS PRO
TWD6,047.00
Each
units
V Output Signal 250 ms ±1.5 % 1m 24 V dc 0°C Alarm, Analogue - Infrared +1000°C ABS, Aluminium - Flange Mount 31 mm