Why use noncontact infrared thermometers?

    Noncontact infrared (IR) thermometers use infrared technology to quickly and conveniently measure the surface temperature of objects. They provide fast temperature readings without physically touching the object. You simply aim, pull the trigger and read the temperature on the LCD display.

    Lightweight, compact, and easy-to-use, IR thermometers can safely measure hot, hazardous, or hard-to-reach surfaces without contaminating or damaging the object. Also, infrared thermometers can provide several readings per second, as compared to contact methods where each measurement can take several minutes.

How do infrared thermometers work?

    IR thermometers capture the invisible infrared energy naturally emitted from all objects warmer than absolute zero.  Infrared radiation if part of the electromagnetic spectrum which includes radio waves, microwaves, visible light, ultraviolet, gamma & x-rays.  Any object emits energy somewhere within that range.

Will infrared sensors measure air temperature?

    No.  AN IR thermometer needs a surface to measure.  The thermometers are specifically designed so that the air between the sensor and the target does not affect the measurement.

Can IR sensors measure water or ice?

Yes.  Any object warmer than absolute zero emits energy.

How do you take a temperature measurement?

    To take a temperature measurement, just point the unit at the object you wish to measure. Pull the trigger and read the temperature on the unit's LCD. Be sure to consider distance-to-spot size ratio and field of view. There are important things to keep in mind while using infrared thermometers:

    Measure surface temperature only. The IR thermometer cannot measure internal temperatures.

    Do not take temperature measurement through glass. Glass has very distinctive reflection and transmission properties that do not allow accurate infrared temperature reading. Infrared thermometers are not recommended for use in measuring shiny or polished metal surfaces (stainless steel, aluminum, etc.).

    Locate a hot spot. To find a hot spot aim the thermometer outside the area of interest, then scan across with an up and down motion until you locate the hot spot.

    Watch for environmental conditions. Steam, dust, smoke, etc., can prevent accurate measurement by obstructing the unit's optics.

    Ambient temperatures. If the thermometer is exposed to abrupt ambient temperature differences of 20 degrees or more, allow it to adjust to the new ambient temperature for at least twenty minutes.