Burned yourself while checking the temperature of your skillet? Or did you have hot steam blown on your face when maintaining your boiler? Temperature checking can be a difficult task to accomplish in many situations. If a regular thermometer just isn’t cutting it, it’s time to start using an infrared thermometer. Also known as laser thermometers, these devices are able to measure temperature without being in direct contact with the body. Just as how solar panels use radiation of the sunlight to power up electricity, laser thermometers utilize thermal radiation to calculate the temperature of an object.
Factors of a laser thermometer
Laser thermometers take several factors into account when undergoing the calculation process. The first and foremost of these is the range of temperature that a device can calculate. Since there are various models of laser thermometers available in the market, the range varies between each. The standard temperature range is -50°C to 500°C, which should be just right for home applications. If you want something with industrial capabilities, choosing a max range of 1000°C would be preferable. The next factor would be the distance to spot ratio, which is necessary for the accuracy of the result. Usually, the closer the device is to the body, the better the readings will be. If the limit of the ratio is exceeded and the device is put further away from the body, the temperature of the surroundings will be included in the calculation and provide an ineffective result.
Emissivity is perhaps the most important factor to consider for a laser thermometer. While this isn’t too important for a casual estimation of temperature, emissivity can make or break specific scientific calculations of temperature. In simple terms, emissivity refers to how much infrared energy a material can absorb or emit. Since thermal radiation is never constant, the material of an object affects the overall temperature. Laser thermometers are able to utilize the concept of emissivity to factor in the emission or absorption rate of the target body and provide a satisfactory result. Emissivity varies between objects, and are especially drastic between metals and non-metals.
Despite the complication surrounding the functions of laser thermometers, they are quite easy to use. The models made for home usage require little to no instructions to utilize, which makes these devices welcoming towards beginners. Nonetheless, maintaining them might be confusing at first glance. The laser feature can be quite intimidating, but it is simple to manage, using the buttons underneath the LCD display. This laser can then be used to pinpoint to a specific object, of which the device will calculate the temperature of. Activation requires pulling a trigger after pointing with the laser, and for the best results, closing in on the object for better distance to spot ratio. This same trigger, when held for a long time, can turn the device on and off. The backlight will make the LCD visible even during darkness. There is no end to learning about laser thermometers. So, for more in-depth functions, check out: https://www.grainger.com/content/qt-370-infrared-thermometers