Good, very good for the price, except for the different aiming laser. I bought two devices, and in both of them the laser aimed way too high at all distances. This is not due to the inevitable parallax error, but rather to the inexplicably different shape of the housing where the laser capsule is glued. I was able to correct (partially melt) the housing around the laser capsule on one device so that the beam is now correct, excluding the parallax error. However, during my first attempt at repair, the laser optics of one device broke due to too much heat.
trouvé! Affichage de la valeur de référence: Appuyez sur le bouton de mesure 3 et alignez le pointeur laser avec cercle laser à 8 points 1 à l‘endroit dont la température servira de référence. La température s‘affiche alors à l‘écran 5. Maintenant, appuyez sur le bouton °C/°F/SET tout en maintenant le bouton de mesure 11 pour reprendre la valeur de température comme valeur de référence. Cette température est affichée sur l‘écran comme un indicateur de référence 6 à côté de l‘indicateur „REF“.
I think it's not that strong, better get a bright green laser which is powered at least by a 18650 battery. Just don't bother other people with it, you might get in trouble ;)
Emissivity is a science all to itself... basically a very hot body with a shiny surface will emit less IR than if it had a matt black finish. Go seek and figure.
Flames, while they do emit light, are fully transparent. Shine a light through a clean burning lighter and it leaves no shadow.
Good, very good for the price, except for the different aiming laser. I bought two devices, and in both of them the laser aimed way too high at all distances. This is not due to the inevitable parallax error, but rather to the inexplicably different shape of the housing where the laser capsule is glued. I was able to correct (partially melt) the housing around the laser capsule on one device so that the beam is now correct, excluding the parallax error. However, during my first attempt at repair, the laser optics of one device broke due to too much heat.
Rien n'est indiquer pour régler la température de référence RF, rien sur le manuel ni sur la vidéo.
trouvé! Affichage de la valeur de référence: Appuyez sur le bouton de mesure 3 et alignez le pointeur laser avec cercle laser à 8 points 1 à l‘endroit dont la température servira de référence. La température s‘affiche alors à l‘écran 5.
Maintenant, appuyez sur le bouton °C/°F/SET tout en maintenant le bouton de mesure 11 pour reprendre la valeur de température comme valeur de référence. Cette température est affichée sur l‘écran comme un indicateur de référence 6 à côté de l‘indicateur „REF“.
How strong is the laser dot? Would it be visible on church tower, which is about 650m away from my house?
I think it's not that strong, better get a bright green laser which is powered at least by a 18650 battery. Just don't bother other people with it, you might get in trouble ;)
Emissivity is a science all to itself... basically a very hot body with a shiny surface will emit less IR than if it had a matt black finish. Go seek and figure.