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. 161-8103
BrandRS PRO
SGD277.34
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
RS Stock No. 822-6421
Mfr. Part No.D6T8L06
BrandOmron
SGD63.82
Each
units
MEMS Thermal - ±3 °C - - +5°C Serial - - +50°C - - - 8.3 mm
RS Stock No. 785-8474
Mfr. Part No.ES1CA40
BrandOmron
SGD1,141.22
Each
units
mA Output Signal 100 ms ±1 % 2m - 0°C Analogue - - +400°C - - - 18 mm
RS Stock No. 382-911
Mfr. Part No.RSCCSTCLT15K
BrandOptris
SGD361.70
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. 553-333
Mfr. Part No.PC21MT-3
BrandCalex
SGD318.79
Each
units
Type J Thermocouple Output 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
RS Stock No. 553-337
Mfr. Part No.PC21MT-4
BrandCalex
SGD318.79
Each
units
Type K Thermocouple 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
RS Stock No. 905-8783
Mfr. Part No.PMU201
BrandCalex
SGD356.64
Each
units
- 125 ms ±1 % 1.5m - -20°C Modbus, USB - - +1000°C - USB - 16 mm
RS Stock No. 553-321
Mfr. Part No.PC151MT-0
BrandCalex
SGD388.29
Each
units
mA Output Signal 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
RS Stock No. 553-343
Mfr. Part No.PC21MT-1
BrandCalex
SGD318.79
Each
units
mA Output Signal 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
New
RS Stock No. 205-3249
Mfr. Part No.PMO-151-HT-K
BrandCalex
SGD364.07
Each
units
Type K Thermocouple 0.24 s 1 % 1m 24 V dc 0°C - - - +500°C - - - -
New
RS Stock No. 205-3248
Mfr. Part No.PMO-151-HT-C
BrandCalex
SGD343.73
Each
units
- 0.24 s 1 % 1m 24 V dc 0°C - - - +500°C - - - -
New
RS Stock No. 205-3250
Mfr. Part No.PMO-151-HT-J
BrandCalex
SGD364.07
Each
units
Type J Thermocouple 0.24 s 1 % 1m 24 V dc 0°C - - - +500°C - - - -
RS Stock No. 553-349
Mfr. Part No.PC21MT-0
BrandCalex
SGD330.71
Each
units
mA Output Signal 240 ms 1 % 1m - 0°C Analogue - - +250°C - - - 18 mm
RS Stock No. 134-8547
Mfr. Part No.TW2001
SGD1,849.11
Each
units
mA Output Signal <2 ms <±0.5 % - - +250°C - - - +1600°C - - - 30 mm
RS Stock No. 839-0718
Mfr. Part No.LCT
BrandCalex
SGD345.70
Each
units
mA Output Signal 240 ms - 1m - 100°C - - Infrared +1000°C Stainless Steel USB - 20 mm
RS Stock No. 134-8546
Mfr. Part No.TW2000
SGD1,474.04
Each
units
mA Output Signal <100 ms <±1 % - - 0°C Analogue - - +999.5°C - - - 30 mm
RS Stock No. 779-4305
Mfr. Part No.PM-MA-151-CT-CRT-MSD
BrandCalex
SGD751.81
Each
units
mA Output Signal 240 ms 1 % 1m - -20°C Alarm, Analogue - - +1000°C - - - 16 mm
RS Stock No. 553-327
Mfr. Part No.PC21MT-0WJ
BrandCalex
SGD624.75
Each
units
mA Output Signal 240 ms 1 % 1m - 0°C Alarm, Analogue - - +250°C - - - 16 mm
New
RS Stock No. 214-4075
Mfr. Part No.07300.0-00
BrandSTEGO
SGD63.15
Each
units
- 1.5 minutes s, 7 seconds s 2 % 2m - -40°C - - - +80°C - IO-Link - -
RS Stock No. 184-4341
Mfr. Part No.PC151MT-3
BrandCalex
SGD305.25
Each
units
mA Output Signal 240 ms - 1m - 0°C - - - +250°C - - - -