Stationery Tester  Lead Core Concentration Tester

Uses

This machine is used to determine the concentration of pencil core a test instrument, that is, to determine the reflected optical density of the lead core in the specified sample paper coated traces (with the symbol d indicates the reflected optical density: d = Lg1/R450, the formula R450 is the sample for the wavelength 450nm blue light diffuse reflection brightness factor, that is, under certain lighting conditions, in a given direction, the sample reflected light brightness and the ideal diffuse reflection light under the same conditions (The ratio of the brightness).

Standard

QB/T 2774-2006 clause 5.5, QB/T 1024-2007, GB/T 26704-2011

Technical parameters

1. Elimination of specular reflection: error is less than the brightness factor of 0.1%, no effect on the concentration measurement

2. Measuring range: 0≤d≤2

3. Specimen size: 25mm square side length

4. Measuring hole: 22mm diameter circle

5. Repeatability: brightness factor error is less than 0.1%

6. The value of the error: brightness factor error is less than 0.3%

7. Volume(W×D×H):37×25×43 cm

8. Weight: 11 Kg

9. Power supply: AC220V 50HZ