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. 553-333
Mfr. Part No.PC21MT-3
BrandCalex
SGD366.57
Each
units
Type J Thermocouple 240 ms 1 % 1m 6 → 28 V dc 0°C Analogue - Infrared +250°C Stainless Steel 316 - M16 x 1 mm Thread 18 mm
RS Stock No. 553-343
Mfr. Part No.PC21MT-1
BrandCalex
SGD366.57
Each
units
MV Output Signal 240 ms 1 % 1m 6 → 28 V dc 0°C Analogue - Infrared +250°C Stainless Steel 316 - M16 x 1 mm Thread 18 mm
RS Stock No. 553-321
Mfr. Part No.PC151MT-0
BrandCalex
SGD399.94
Each
units
MA Output Signal 240 ms 1 % 1m 6 → 28 V dc 0°C Analogue - Infrared +250°C Stainless Steel 316 - M16 x 1 mm Thread 18 mm
RS Stock No. 553-337
Mfr. Part No.PC21MT-4
BrandCalex
SGD366.57
Each
units
Type K Thermocouple 240 ms 1 % 1m 6 → 28 V dc 0°C Analogue - Infrared +250°C Stainless Steel 316 - M16 x 1 mm Thread 18 mm
RS Stock No. 905-8783
Mfr. Part No.PMU201
BrandCalex
SGD367.34
Each
units
- 125 ms ±1°C or ±1% of reading 1.45m Via USB -20°C Modbus, USB MODBUS Infrared +1000°C Stainless Steel 316 USB M16 x 1 mm Thread 18 mm
RS Stock No. 905-8768
Mfr. Part No.PN151
BrandCalex
SGD269.81
Each
units
V Output Signal 125 ms ±1.5°C or ±1.5% of reading 1m - 0°C 0-10 V DC, 0-5 V DC, Alarm, 1-5 V DC NFC Infrared +1000°C ABS, Aluminium NFC Depth 7 mm, M3 x 0.5 mm thread, 2 x holes 31 mm
RS Stock No. 905-8774
Mfr. Part No.PMU21
BrandCalex
SGD316.72
Each
units
- 125 ms ±1°C or ±1% of reading 1.45m - -20°C Modbus, USB MODBUS Infrared +1000°C Stainless Steel 316 USB M16 x 1 mm Thread 18 mm
New
RS Stock No. 220-5858
Mfr. Part No.EX-301-LT-C-5
BrandCalex
SGD1,113.56
Each
units
MA Output Signal 0.24 s 1 % 5m 12 → 24 V dc - - - - - - - - -
RS Stock No. 100-0153
Mfr. Part No.PN151-K
BrandCalex
SGD284.72
Each
units
Type K Thermocouple 125 ms ±1.5°C or ±1.5% of reading 1m 6 → 28 V dc 0°C Alarm, Type K Thermocouple NFC Infrared +1000°C ABS, Aluminium NFC Depth 7 mm, M3 x 0.5 mm thread, 2 x holes 31 mm
RS Stock No. 205-3248
Mfr. Part No.PMO-151-HT-C
BrandCalex
SGD350.48
Each
units
- 240 ms ±1°C or ±1% of reading 1m 8 → 28 V dc 0°C 4-20 mA - Infrared +500°C Aluminium, Stainless Steel 316 - M16 x 1 mm Thread 18 mm
New
RS Stock No. 220-5857
Mfr. Part No.EX-301-LT-C-25
BrandCalex
SGD1,307.56
Each
units
MA Output Signal 0.24 s 1 % 25m 12 → 24 V dc - - - - - - - - -
RS Stock No. 779-4314
Mfr. Part No.CIRSPMHA201CTCRTMSD
BrandCalex
SGD939.12
Each
units
MA Output Signal 240 ms 1 % 1m 24 V DC -20°C Alarm, Analogue - Infrared +1000°C Aluminium, Stainless Steel 316 Touch Screen Display M16 x 1 mm Thread 16 mm
RS Stock No. 205-3247
Mfr. Part No.PMB201
BrandCalex
SGD321.44
Each
units
- 125 ms ±1°C or ±1% of reading 1m 6 → 28 V dc -20°C RS-485 Modbus RTU MODBUS Infrared +1000°C Stainless Steel 316 RS-485 M16 x 1 mm Thread 18 mm
RS Stock No. 133-6337
Mfr. Part No.PCAN21
BrandCalex
SGD470.72
Each
units
MA Output Signal 200 ms ±1°C or ±1% of reading 1m 12 → 24 V dc -20°C CAN-Bus CAN-BUS Infrared +1000°C Stainless Steel 316 - M16 x 1 mm Thread 16 mm
RS Stock No. 133-6336
Mfr. Part No.PUA8-301
BrandCalex
SGD764.09
Each
units
MA Output Signal 200 ms ±1°C or ±1% of reading 1m 6 → 28 V dc -40°C USB, 4-20 mA MODBUS Infrared +1000°C Stainless Steel 316 USB M20 x 1 mm Thread 27.6 mm
New
RS Stock No. 220-5852
Mfr. Part No.EX-151-MT-C-5
BrandCalex
SGD1,006.86
Each
units
MA Output Signal 0.24 s 1 % 5m 12 → 24 V dc - - - - - - - - -
New
RS Stock No. 220-5854
Mfr. Part No.EX-21-LT-C-5
BrandCalex
SGD968.06
Each
units
MA Output Signal 0.24 s 1 % 5m 12 → 24 V dc - - - - - - - - -
RS Stock No. 205-3249
Mfr. Part No.PMO-151-HT-K
BrandCalex
SGD371.22
Each
units
Type K Thermocouple 240 ms ±1°C or ±1% of reading 1m 8 → 28 V dc 0°C Type K Thermocouple - Infrared +500°C Aluminium, Stainless Steel 316 - M16 x 1 mm Thread 18 mm
New
RS Stock No. 220-5849
Mfr. Part No.EX-151-LT-C-25
BrandCalex
SGD1,200.86
Each
units
MA Output Signal 0.24 s 1 % 25m 12 → 24 V dc - - - - - - - - -
RS Stock No. 839-0705
Mfr. Part No.PC151LT-0
BrandCalex
SGD336.15
Each
units
MA Output Signal 240 ms ±1°C or ±1% of reading 1m 6 → 28 V dc -20°C 4-20 mA - Infrared +100°C Stainless Steel 316 - M16 x 1 mm Thread 18 mm