| 摘要 |
FIELD: instrumentation.SUBSTANCE: optical dust meter comprises pulse voltage source, light source, light flux splitter, first and second protective openings of measuring channel. It comprises first and second protective openings of reference channel filled with gas mix cleaned of dust. Besides, it incorporates inspection opening burden control device, blower, temperature controller, inspection opening heater and microcontroller. Reference and measuring channel of dust meter comprises diaphragm, first photo receiver, first amplifier, first adder, first sync detector, second amplifier, second adder and second sync detector.EFFECT: higher precision of accuracy in concentration and mean particle size measurement.1 dwg |
