Infrared laser thermometer gun
What is an infrared laser thermometer gun?
The infrared laser thermometer gun or laser temperature gun are used to measure the surface temperature of an object without touching the object. They normally have a laser pointer to help guide the user to where they are pointing the gun. They are extremely useful in applications that are in difficult to reach locations or on dangerous machinery.
INFRARED LASER THERMOMETER GUN
WHAT IS AN INFRARED
LASER THERMOMETER GUN?
The infrared laser thermometer gun or laser temperature gun are used to measure the surface temperature of an object without touching the object. They normally have a laser pointer to help guide the user to where they are pointing the gun. They are extremely useful in applications that are in difficult to reach locations or on dangerous machinery.
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How does an Infrared laser
thermometer gun work?
Hot objects will have more energy in the molecules from the heat which results in the molecules vibrating faster due to the excess energy. This in turn makes them emit an invisible light called thermal radiation. Utilizing a series of lenses and mirrors, this emitted energy is focused into the detector and converted into a temperature reading.
HOW DOES AN INFRARED LASER
THERMOMETER GUN WORK?
Hot objects will have more energy in the molecules from the heat which results in the molecules vibrating faster due to the excess energy. This in turn makes them emit an invisible light called thermal radiation. Utilizing a series of lenses and mirrors, this emitted energy is focused into the detector and converted into a temperature reading.
What applications are they used for?
The advantage of distance temperature measuring is highly useful across a wide range of industries, here are some examples:
Identify fire
hot spots
Cooking
food
Oven or heater checks
Electrical equipment
Epidemic control
Checking for fevers related to coronavirus or other health problems
Are they accurate?
Whilst thermometers can vary in their accuracy they are still within around ±1% or ± 1℃. There are other factors which may affect the readings:
· The reflectivity of the measured object
· Dirt on the lens of the gun
· Steam or dust between the object and gun
· Distance and size of the object being measured
· The gun's temperature difference to the environment
With careful planning and preparation, it is possible to reduce the limiting effects of dirt and steam, which cause a temperature difference between the infrared gun and the surface. Additionally, its advised to allow 20 minutes for the fun to adjust to a new environment temperature as well as wearing gloves to reduce the effects of the users body heat.
Reflectivity and Emissivity
Different materials will reflect light and heat differently, for example, shiny metal and glossy paint will have a high reflection compared to wood. The first and easy way to counter this is to use a nonreflective tape to wrap around or on the object, you want to measure if this is not possible or the object is too hot then choose a thermometer gun with Emissivity setting.
Emissivity is the measure of how much heat an object emits. This is measured from a range of 0 does not really emit heat (non-emissive) to 1 which emits a lot of heat (emissive). A good rule of thumb to find the emissivity of an object is to look at its color. The darker it is the greater the emissivity.
ARE THEY ACCURATE?
Whilst thermometers can vary in their accuracy they are still within around ±1% or ± 1℃. There are other factors which may affect the readings:
· The reflectivity of the measured object
· Dirt on the lens of the gun
· Steam or dust between the object and gun
· Distance and size of the object being measured
· The gun's temperature difference to the environment
Minimizing the factors of dirt, steam, and difference in temperature from the environment to the gun and the human body temperature can easily be managed with care and preparation. Allow for up to 20 minutes for the gun to go to the new environment's temperature (for example if you stepped indoors to a cool place from a hot outdoors). Wearing gloves can also reduce the user's body temperature.
REFLECTIVITY AND EMISSIVITY
Different materials will reflect light and heat differently, for example, shiny metal and glossy paint will have a high reflection compared to wood. The first and easy way to counter this is to use a nonreflective tape to wrap around or on the object, you want to measure if this is not possible or the object is too hot then choose a thermometer gun with Emissivity setting.
Emissivity is the measure of how much heat an object emits. This is measured from a range of 0 does not really emit heat (non-emissive) to 1 which emits a lot of heat (emissive). A good rule of thumb to find the emissivity of an object is to look at its color. The darker it is the greater the emissivity.
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