An infrared temperature sensor is used to measure temperature from a distance by taking an infrared energy reading of a surface or object.
To measure the surface or object temperature, infrared (IR) temperature sensors generate an infrared radiation beam focused by a lens onto a surface. The sensor receives the reflected beam and converts the energy into an electrical signal that can be shown in temperature units.
In this post, we’ll cover the main features of a good infrared temperature sensor to help you find the right one to suit your needs.
Understanding the infrared temperature sensor
Patents of the design of the infrared temperature sensor could be found from as long ago as 1911 but it wasn’t implemented until the 1930s. since then the implementation of the technology has been wider, and more research on the infrared thermometer has been done, with more understanding we can use infrared thermometers in more applications, and get better accuracy.
They are composed of optical components IR detectors a display to output data and electronics, the optical components focus radiation on the IR detector and filter radiation wavelengths to show data. It can calculate the temperature of surfaces of an object by measuring the intensity of the infrared radiation emitted by the target. It delivers accurate data fast.
A sensor’s field of view is determined by the angle at which the sensor is sensitive to thermal radiation meaning, anything that is in its field of view will be detected. When measuring temperature, the object must fill the field of view otherwise it will also measure objects not intended to be included in the measurements.
Contact infrared temperature sensors
These sensors measure their temperature and need to be in contact with the object being measured it will then get the same temperature as the object and give a reading, these sensors have to be in contact with an object to get accurate measurements, however, they could give incorrect readings as they may cause the object being measured to increase in temperature, and give false results. They could also be unusable if the surface is hard to reach or dangerous.
Non-contact infrared temperature sensor
These are sensors that don’t need to be in contact with the surface to get the temperature allowing them to be used to measure targets that are hard to reach or even too hot at a short distance.
Advantages of non-contact infrared temperature sensor
- Safe to use as one doesn’t need to be too close to an object to measure their temperatures.
- Easy to use, simply measure the temperature of the object by pointing at it.
- It saves time as it shows the temperature immediately.
- Relatively small so it is easy to maneuver.
- Widely used in both Consumer and commercial industry applications that need accurate temperature measurements.
- Can also be used to measure objects that are in motion.
- Accurate measuring reading.
- They are affordable and durable.
Aim infrared tire temperature sensor
These sensors are used to measure the temperature of tires on vehicles as they are in motion they are mounted on the car to give instant data hence drivers don’t need to stop to check.
Infrared temperature sensors used for human measurement
These sensors receive the radiation emitted by human beings, they come in handy when one needs to keep some safe distance especially when there is an outbreak of diseases. There are also other sensors for humans that detect movement by reading a person’s temperature, these are used for security purposes like in banks.
572-2 High-Temperature Infrared Thermometer
This Is a gun-type non-contact infrared thermometer with the capability of measuring from -30° to 900° and also has laser sighting to help target accurately and has a display.
Grove digital infrared temperature sensor
It uses a thermistor to detect the ambient temperature, the resistance of the thermistor will increase when the ambient temperature decreases. it senses a temperature range of -40° to 125°.
Infrared Thermometer With Arduino And Mlx90614 Temperature Sensor
It Is a non-contact temperature measurement module based on Mlx90614 with both IR sensitive thermophile detector chip and a signals conditioning chip integrated. This infrared thermometer can be easily made in a DIY project if all components are available as instructions are readily available online. It can be used for home and healthcare applications.
Infrared Thermocouple K Type Temperature Sensor
Type k conductor is any temperature sensor that contains Chromel and Alumel conductors that meet output requirements they allow measurement of high temperatures generally from -21° to 1260°.