Vacuum 502 fingerprint smoke cabinet working principle, is the use of vacuum environment, so that hydrogen-based acrylic molecules have been fully, uniformly penetrated into folding, folding and leather, viscous object, group tape and other objects inside the inside side, so that these objects inside the fingerprint, without unexpandable can be directly smoked, extract fingerprints, Breaking through the previous can only be under normal pressure environment of the smoking method, greatly improving the accuracy of the case.
The potential trace physical evidence of the crime scene often needs to be smoked by means of a closed container, using physical or chemical methods, and in other cases the effect of smoking in a vacuum environment is significantly better than that in a normal pressure environment. In particular, some carrying potential trace physical evidence of the object (e.g. kneading into a clump of tape) in a folding or closed state, often pressure environment on the inside or inside of the object is often not smoked or not ideal, and under vacuum conditions will enhance the penetration of smoked substance molecules, so as to achieve a comprehensive, uniform smoke effect.
Technical parameters:
Intelligent touch screen: 7 inches
1. Form factor: 1000 x 600 x 780mm (Wide x deep x high)
2. In-cabinet size: 450 x 450mm (diameter x depth)
3. Total capacity: 70L
4. Operating voltage: AC220V operating current: 2A
5. Full smoking time: 30 minutes.
6. Within 10 minutes, the humidity in the cabinet reaches 80RH, and the temperature of the smoked plate reaches 100 degrees C, and 3 degrees C (vacuum environment).
7. Maximum vacuum: equal to greater than -950 mbar.
8. Built-in circulatory purification system: residual smoked prosthesis concentration in the cabinet after purification is less than 0.014 mg/m3 (approx. 1.5 mg/m3).
9. After vacuuming, the purity of the "502" smoked gas in the cavity, which is several times higher than the non-vacuum, can greatly shorten the smoking time and improve the quality of the smoke. This equipment will replace the general 502 smoking cabinet, for China's criminal investigation equipment development to contribute.
Characteristics:
1. Originally using intelligent touch screen to control the vacuum 502 smoke cabinet work. In the whole process of smoking, by the touch screen automatic, intelligent operation, smoked programs and parameters, through the touch screen control. After the completion of the whole smoking program, the touch screen also has "all work completed" text reminder, indicating that the work has been completed, you can remove the object.
2. With network and USB interface, real-time record of work. In the work, the new intelligent touch screen using micro-computer programmable technology, the integration of the application of industrial-grade modules and microcomputer data analysis and intelligent PID control technology, easy to operate, temperature and humidity control more accurate, and there are a variety of instant adjustment of parameters. At the same time, it can also record the work situation and smoking parameters through the USB stick, and can connect the computer through the network communication interface, control the smoking and adjust the smoking parameters, providing the real material for the laboratory demonstration.
3. Voice prompt function. Each program has voice prompts, highlighting the characteristics of humanization.
The above three functions are unique in similar products at home and abroad. The technology is the first in China, the international leading position. From a functional point of view alone, it has surpassed the import of similar products.
4. Large space. The working volume 70L, for the moment, is the largest working volume of similar products.