1. Use

A microphotometer (also known as a microphotometer or black meter) is one of the complete sets of spectroscopic instruments. The main purpose is to measure the blackness of the spectrum films taken by various spectrographs to determine the content of the measured elements and complete the quantitative analysis of the spectrum. It can also be used for density inspection and photosensitivity inspection of photographic film layers, as well as aberration measurement with other optical instruments.

2. Specifications

1. Measurement system magnification: 20 times NA0.26 23 times NA0.3026 times NA0.34 29 times NA0.38

2. Projection system magnification: 21 times

3. Lighting 12-volt, 50-watt incandescent bulb

4. Main slit: width adjustment range: 0～3mm, indication value: 0.01mm; height adjustment range: 0～20mm, indication value: 2mm

5. Worktable: Longitudinal movement range: 0～90mm, Indication value: 1mm; Lateral movement range: 0～220mm, Horizontal movement range: 0～25mm, Inching indication value: 0.01mm

6. Selenium photocell: Effective area: Φ25 mm; Sensitivity: 400～500 microamps/lumen; Working life: 500 hours

7. Galvanometer: Sensitivity: 2.5×10-9A/mm/m; Oscillation period: 1 second;

8. Instrument weight 50 kg

9. Dimensions 1500×900×800mm

3. Complete set of instruments

1. Microphotometer (with galvanometer inside) 1 set

2. Lights (12V, 50W) 4pcs

3. 1 selenium photocell

4. 3 foot pads (one of them is softer)

5. 1 square hole wrench for adjustment

6. 1 copy of the instruction manual