The explosion-proof direct-reading dust concentration measuring instrument CCHG1000 is an instrument used to measure the dust concentration in the presence of flammable and explosive mixtures. With the direct reading measurement method, the dust concentration value can be read directly, without complex calculation or calibration, and the instrument has explosion-proof function and can be used safely in hazardous environments.
The working principle of the explosion-proof direct-reading dust concentration measuring instrument is based on optics or principles, and the dust concentration is calculated by measuring the scattering of light or the induction of electric charge by dust particles. Explosion-proof direct-reading dust concentration measuring instrument CCCHG1000 has the characteristics of high precision, high reliability and easy operation, and is widely used in coal mines, chemical industry, oil depots, tunnels and other environments where flammable and explosive mixtures exist.
Main technical indicators
1 Dust concentration measurement range: 01mg/m³～1000mg/m³；
2 Relative error of dust concentration measurement: 20%;
3 Relative error of stability: 25%；
4 Sample Flow: 20l/min；
5 Sampling flow error: 3%;
6 Sampling flow stability: 3%;
7. Sampling performance: conform to the "BMRC" sampling performance curve;
8. Power supply: The measuring instrument battery adopts Ni-H NiMH battery 25ah，1.2V 6 cells (the battery must be provided by the manufacturer for electrolyte leakage and battery maximum surface temperature report), in the series current limiting resistors (4 10 15W current limiting resistors in parallel), with epoxy resin potting and placed in the battery box. Maximum output voltage UO: 90V, maximum output current IO: 38a, constituting intrinsically safe battery components;
9 Operating Voltage: 65v～9.0V DC (intrinsically safe);
10 Operating current: 200mA;
11. Timing range: 0-60 minutes arbitrarily set;
12. Explosion-proof type: mine intrinsic safety type;
13 Ex marking: EXIB I MB;
14 Dimensions: 245*205*75 (mm);
15 Weight 19kg。
In a word, the explosion-proof direct-reading dust concentration measuring instrument CCHG1000 is an important safety monitoring equipment, which can effectively monitor the dust concentration in the environment and ensure the safety of people and property.