Typical emission factors are:
- Opaque, non-metallic objects (wood, plastic, paper, paint, ceramics, anodized aluminum): ~ 0.85-0.95
- Most metals: ~ 0.2-0.5
- Gold, silver, aluminum (especially polished metals):
Transparent and reflective materials such as glass, thin plastic films and objects behind these are difficult to measure correctly.
The Lasergip 1080 of Etekcity has a fixed Emissonsfaktor of 0.95, which is a good average for most non-metallic surfaces. On objects with a different emissivity for example, it helps to apply and measure on this one strip matt tape. Who wants to measure often diverse objects directly, possibly should rather choose a device with adjustable emissivity. For most standard tasks but this is quite sufficient.
Note must also the measuring range captured. This is indicated at a distance of 30cm to 2.5cm in diameter and is then in a wider ratio of 12: 1, ie at 1m distance one has a measuring range of ~ 8cm diameter. About this measuring range is averaged, that aims to sell an object of 2cm at 1m distance, so comes the majority of the measurement of the area and not the object itself. The small laser spot here suggests a much smaller spot.
Thus, a distance of max for spot measurements on very small parts. 30cm ideal because by then the diameter is smallest.
The Laser Grip 1080 is very compact, fits comfortably in your hand and is up and running quickly. A 9V - not alkaline, but at least - is included and must be inserted in the handle. The thermometer is activated automatically with the measurement and goes off again automatically (15s after the last measurement). The display shows the temperature in either ° C or F and is illuminated blue button to print. The readability is unfortunately dependent on the angle, with direct, straight look at the display but without any problems. The thermometer measures repeated as long as you hold the measuring button in the handle is pressed.
When you release the button, the last value is frozen on the display. For targeting of the measuring object a laser pointer can be switched on.
The thermometer is well made, comes with good, but only the English instructions. Over a measuring range of -50 ° C to 550 ° C with an accuracy of +/- 2% or +/- 2 ° C will specify (whichever the greater mistake supplies) and a resolution of 0.1 ° C.
This is well respected by my tests even with my test temperatures: A glass with ice water and boiling water were measured to +/- 0.3 ° C accuracy.
The Etekcity Laser Grip 1080 was left to me for free for testing.
