|
Thermal imagers are usually tested at laboratory conditions in situation when they are expected to work properly at extreme ambient temperatures. It is a commonly forgotten truth that parameters of thermal imagers can vary significantly with ambient temperature. This dependence or in other words temperature stability of the tested imager can be measured by placing the tested imager inside a temperature chamber of variable ambient temperature and then by measuring imager characteristics. There are two methods to measure temperature stability: the first by putting to the chamber both the imager and the blackbody, the second – by putting to the chamber the imager and using a chamber with a transparent window. The latter method is more convenient for the test crew. There are many commercially available temperature chambers on the market. However, they are not optimized for testing thermal imagers. They are usually too big, temperature range not suited for thermal imagers, have too high thermal inertia or no transparent windows. The ET-30 temperature chamber parameters are just optimized for testing thermal imagers: small size, low thermal inertia, equipped with a transparent window. This makes the ET-30 chamber an ideal solution for any laboratory than need to verify performance of thermal imagers under real working conditions.
Fig. 1. Photo of the ET-30 chamber
●Company trusted by customers in over 30 countries all over the world ● |
