photometer PM200L M-photometer is mainly used to test the feebleness light Illuminance which higher than 0.01lx.

photometer

Auto range switch.Fine V(λ) and cosφ corrected detector.

class 1 according to GB/T7403 standard.Low zero drift, high accuracy.Testing range0.01lx∼20000lxRS-232-C interface.

 Working Principle Diagram