Betekenis van:

Zelfstandig naamwoord
    • a pressure gauge for comparing pressures of a gas




    1. U-tube (auxiliary manometer)
    2. When using a capacitance manometer
    3. It shall be measured at the dip-stick hole with an inclined-tube manometer.
    4. In the case of liquids, the substance itself serves as the fluid in the differential manometer.
    5. The degassed manometer liquid is put in a bulge provided on the long arm of the isoteniscope.
    6. After that, the isoteniscope is inclined so that the manometer liquid can flow into the U-tube.
    7. The sample chamber (figure 3a) is connected to the vacuum line via a valve and a differential manometer (U-tube containing a suitable manometer fluid) which serves as zero indicator.
    8. Readings of the flow pressure gauge, pressure differential manometer, and the flowing air temperature indicator are to be recorded simultaneously.
    9. The pressure required for this can be read off the manometer or off an instrument of higher precision.
    10. The latter consists of a vacuum pump, a buffer volume, a manostat for admitting nitrogen for pressure regulation and manometer.
    11. A quantity of the liquid, sufficient to fill the bulb and the short leg of the manometer, is put in the isoteniscope.
    12. The isoteniscope is then placed so that the sample returns to the bulb and fills the short leg of the manometer.
    13. The pressure in the crankcase shall be measured at an appropriate location. It shall be measured at the dip-stick hole with an inclined-tube manometer.
    14. Flanges between which the orifice plate is located and clamped are to be provided with pressure take-off lines connected to a manometer.
    15. Mercury, silicones and phthalates are suitable for use in the differential manometer, depending on the pressure range and the chemical behaviour of the test substance.