BELL UNIT FOR THE CORRECT REPRODUCTION AND MEASUREMENT OF DISCRETE VOLUMES AND FLOW RATE OF GAS

摘要

The proposed bell unit for the correct reproduction and measurement of discrete volumes and flow rates of gas contains a bell chamber with a counterweight, a working gas source with pipes, and a unit for measuring the displacement of the bell chamber. The unit for measuring displacement of the bell chamber is designed as a displacement transducer providing conversion of the chamber displacement into the code of M-sequence with quasi-ternary manipulation and contains a measuring rule, an illumination source, and a photodetector. The measuring rule is made of opaque material and contains horizontal slots that are arranged according to the code of M-sequence with quasi-ternary manipulation. The output of the photodetector is connected to a computer.