The Extech 42511 Dual Laser Infrared (IR) Thermometer features a unique dual laser which simplifies the distance-to-spot ratio by identifying the exact measuring spot when the two lasers converge to a single spot. No more calculations!
Both models are identical except for the difference in the distance to spot ratio and high end temperature range. The 42511 features a 12"1 (or 12" distance) ratio with upper temperature range of 1100°F.
Specifications:
| Function |
Model 42511 |
| Temperature Range |
-58°F to 1100°F
-50°C to 600°C |
Field of View
(Distance to spot ratio) |
12:1 |
| Max Resolution |
-1°F/°C |
| Emissivity |
0.10 to 1.00 adjustable |
| Accuracy |
± 1.0% of reading or ± 2ºF
(whichever is greater) |
| Dimensions |
5.7” x 4.0” x 1.6” |
| Weight |
5.7oz |
| Power |
9V Alkaline |
| Warranty |
3 Years Extech Warranty |
| Included with Meter |
9V Battery and Carrying Case |
Download Product Datasheet
Download Users Manual
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What is the Field of View (Distance to Spot ratio)?
The field of view, also referred to as the distance-to-spot ratio determines how big or small of a target you can measure at a specific distance. Knowing the field of view ratio before you purchase can help you make a better decision about which meter fits your application the best. |
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Example showing how the dual lasers eliminate the guesswork
of calculating the field of view.
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