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. 822-6421
Mfr. Part No.D6T8L06
BrandOmron
SGD69.00
Each
units
MEMS Thermal - ±3 °C - - +5°C Serial - - +50°C - - - 8.3 mm
RS Stock No. 785-8474
Mfr. Part No.ES1CA40
BrandOmron
SGD1,158.30
Each
units
MA Output Signal 100 ms ±1 % 2m - 0°C Analogue - - +400°C - - - 18 mm
RS Stock No. 553-333
Mfr. Part No.PC21MT-3
BrandCalex
SGD359.51
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. 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. 553-321
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
SGD359.51
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. 553-343
Mfr. Part No.PC21MT-1
BrandCalex
SGD359.51
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. 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. 839-0708
Mfr. Part No.PC151HT-0
BrandCalex
SGD326.36
Each
units
MA Output Signal 240 ms ±1°C or ±1% of reading 1m 6 → 28 V dc 0°C 4-20 mA - Infrared +500°C Stainless Steel 316 - M16 x 1 mm Thread 18 mm
RS Stock No. 839-0724
Mfr. Part No.PM2.2-251-HT-CRT-MSD
BrandCalex
SGD838.55
Each
units
MA Output Signal 240 ms ±1% of reading 1m 24 V DC 450°C Alarm, 4-20 mA - Infrared +2000°C Aluminium, Stainless Steel 316 Touch Screen Display M16 x 1 mm Thread 18 mm
RS Stock No. 133-6338
Mfr. Part No.PCAN201
BrandCalex
SGD497.52
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. 134-8550
Mfr. Part No.TW7000
SGD1,087.33
Each
units
MA Output Signal <100 ms <±1 % - - +50°C Analogue - - +500°C - - - 30 mm
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
RS Stock No. 779-4305
Mfr. Part No.PM-MA-151-CT-CRT-MSD
BrandCalex
SGD774.36
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
New
RS Stock No. 205-3247
Mfr. Part No.PMB201
BrandCalex
SGD315.25
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. 553-327
Mfr. Part No.PC21MT-0WJ
BrandCalex
SGD704.56
Each
units
MA Output Signal 240 ms 1 % 1m 6 → 28 V dc 0°C Alarm, Analogue - Infrared +250°C Aluminium, Stainless Steel 316 - M16 x 1 mm Thread 16 mm
RS Stock No. 204-9686
Mfr. Part No.TW7011
SGD1,827.86
Each
units
V Output Signal 2 ms < ± 1 % - 34 V dc +350°C - - - +1350°C - - - -
New
RS Stock No. 215-7477
Mfr. Part No.ES1B 60-120C
BrandOmron
SGD715.08
Each
units
- - - 3m 12 V dc, 24 V dc +60°C - - - +120°C - - - -
RS Stock No. 839-0702
Mfr. Part No.PC21LT-0
BrandCalex
SGD278.01
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
RS Stock No. 134-8551
Mfr. Part No.TW7001
SGD1,533.80
Each
units
MA Output Signal 2 ms <±1 % - - +250°C Analogue - - +1250°C - - - 30 mm