I. Operation

1.1 Introduction

1.1.1 Technical characteristics

· To meet standard ISO7072;

· Automatic chromaticity compensation;

· Automatic range switch, several measurement units can be selected;

· 2000 sets of data can be stored;

· Auto power-off;

· Under-voltage prompt;

· Communication function through USB socket;

· Power-off protection function. When the meter is shut down, the stored calibration data and setting parameters will not be lost.

1.1.2 Specifications

· Zero drift: ≤±0.5%FS/30 min

· stability: ≤±0.5%FS/30 min

· Repeatability: ≤0.5%

· Indication error: ≤ ±6%

· Working Environment

a. Ambience temperature: 5℃~35℃

b. Relative humidity: ≤85%

c. Power supply: DC voltage (4.8～6)V, the supply current not less than 300mA;

d. No corrosive gas exist in the surrounding air;

e. No vibration that could affect performance exist;

f. No strong electromagnetic interference to surrounding except the geomagnetic field

· Dimensions (mm):  220×100×80 (L×W×H).

· Weight (kg): About 0.8kg.