@jjmmss
Interesting .... well spotted.
So FLIR are selling off sub standard products for a small discount. A duff batch of microbolometers maybe. Surprised FLIR will sell sub standard product though. The small amount of discount is a joke as well.
I note that measurement accuracy and ambient working temperature are compromised. The E4 has no physical temperature stabilisation and relies upon an algorithm and look-up table to estimate the error introduced by ambient temperature changes. It is a possibility that the calibration stage of production detected 'out of limits' calibration values for these cameras below zero and above 40C.
Surprised that measurement accuracy would have been compromised though as that is based upon calibration tables and some maths. +-5C is a truly appalling accuracy figure for a thermal camera. A bit of an odd situation really.
I wonder what FLIR do to clearly identify the cameras as sub standard specification....... Brand them with a big letter 'R' for Reject maybe
