The Weighing And Measuring of Chemical Substances
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In our eReader you can find the full English version of the book. Read The Weighing And Measuring of Chemical Substances Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Weighing And Measuring of Chemical Substances
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12.
OP CHEMICAL SUBSTANCES 35 movement. It consists of a tube shaped as shown, the ends being connected through flexible pipes with the Venturi meter. The circular tube is partially filled with mercury, and the whole system rests on knife edges. Any difference in pressure will force the mercury round the tube, disturbing the balance which FIG. 13.
is restored by the movement of the counter weight M. The movement of the tube is indicated by a pointer against a scale.
The flexible connections are... in actual practice done away with and pressure is admitted through glands and tubes in the knife edges.
36 THE WEIGHING AND MEASURING A still more elaborate system is arranged to give a permanent record of the quantity passed, Fig. 13. The two floats, which work in tubes P and G con- nected to the pressure indicating tubes of the Venturi meter, communicate their difference in level through a differential gear to a pointer C, which, through the interposition of the drum D, causes a clock to engage and disengage with a counter.
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To quickly assess the difficulty of the text, read a short excerpt:
12.
OP CHEMICAL SUBSTANCES 35 movement. It consists of a tube shaped as shown, the ends being connected through flexible pipes with the Venturi meter. The circular tube is partially filled with mercury, and the whole system rests on knife edges. Any difference in pressure will force the mercury round the tube, disturbing the balance which FIG. 13.
is restored by the movement of the counter weight M. The movement of the tube is indicated by a pointer against a scale.
The flexible connections are... in actual practice done away with and pressure is admitted through glands and tubes in the knife edges.
36 THE WEIGHING AND MEASURING A still more elaborate system is arranged to give a permanent record of the quantity passed, Fig. 13. The two floats, which work in tubes P and G con- nected to the pressure indicating tubes of the Venturi meter, communicate their difference in level through a differential gear to a pointer C, which, through the interposition of the drum D, causes a clock to engage and disengage with a counter.
What to read after The Weighing And Measuring of Chemical Substances?
You can find similar books in the "Read Also" column, or choose other free books by H L Malan to read onlineMoreLess
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