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TPI Infrared Thermometers FAQ
What does "distance to spot ratio" mean?
Your laser spot needs to be showing inside the target area you are measuring. An 8:1 “distance to spot ratio” means you are measuring a 1 inch diameter area at a distance of 8 inches.
How far can I measure?
The distance is unlimited; however, the size of the target area sets the limit on distance for accurate measurement. Example: If the area you wish to measure is 1 ft. in diameter, then you will need to be within 8 ft. to record an accurate reading.
What is the smallest target size I can read?
Approximately one half inch in diameter.
How do I turn the laser on and off?
While holding the Power On button down you can toggle the Lock On button for either laser on or laser off operation.
What is emissivity?
This is a ratio of an object's infrared emission compared to a theoretical black body (which is considered as 1). Emissivity is always less than 1. Adjustable emissivity allows you to adjust your non-contact infrared thermometer to the surface you are checking and it makes the reading more accurate.
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