Several months ago I purchased Luxmeter UNI-T UT383.

This is a nice suitable device, but it indicates wrong illumination data

for outdoor conditions. The summer noon cloudless outdoor illumination by

UT383 is near 65kLux, but real illumination must be near 100kLux (this

confirms by MS6610 luxmeter and some scientific publications).

During exploration the photocurrent dependence of UT383, I found that this

device has the break of a curve at the point 20kLux (in attachment).

I am confused, what this break of a curve means?

Data UNI-T UT383 Luxmeter Testing

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