熟女无套高潮内谢视频韩国,女人荫蒂全部过潮喷,老熟妇仑乱视频一区二,蜜芽忘忧草三区老狼大豆

LR-HM-600A Black And White Densimeter

Main technical parameters

1. Measurement density range: 0 ~ 5.0D;

2,Measure field: ф2mm(diameter of light hole);

3. Repeatability error: ±0.03d;
4. Measurement error :(0.00d ~ 3.00d)±0.03D

(3.00 ~ 4.00 D)±0.04D;

(4.00 ~ 5.00 D) ±0.06D.

5. Display mode: three-digit LED digital display;
6. Power supply: AC220V + + 10% 50HZ;
7. Power consumption: less than or equal to 7W;

8, using the environment: 0 ~ 40 ℃, relative humidity 85% or less;

9. External dimensions: 330 x 110 x 116mm;
10. Weight: 1.7kg.

LR-HM-600A Black And White Densimeter

Working principle

HM-600A digital transmission black and white densitometer is used to measure the amount of light passing through transparent materials (such as film base) to determine the amount of light absorbed by the surface of the instrument, it is mainly composed of lighting system, acquisition of light and measurement system and signal processing system.Ac modulation light source is used to provide a light source with certain quality and stability. The amount of light passing through the film under test is received by the photoelectric sensor and converted into electrical signals. After signal processing, the light is sent to the microcontroller and the density value of the film under test is finally displayed on the display.

LR-HM-600A Black And White Densimeter

Configuration sheet

1, black and white densitometer host: one

2. Power cord: one
3. Standard density film: one piece
4. Spare fuse: one
5. Instruction manual: one copy
6. Instrument warranty card: one copy
7. Certificate of qualification: one copy