... 1. Lux Meter: Test Lux, CCT, Color Coordinate 2. Based on all digital integral Lux, photometric and colorimetric measurement Digital Lux Meter ... display, RS232 computer interface and software, Data hold function. 1. Illuminance measurement: (test condition: vertical) • Relative spectral ... illuminance>5 lx): • Dynamic range: 1350-25000K • Sensitivity: 1 K• Accuracy: ±20K (CIE Standard Source A, 500 lx ...