An instrument for measuring the density of gas as it changes with temperature
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Who knows what kind of instrument should be used to measure the density of gases whose density changes with temperature, such as C4, where the density varies as a function of temperature? What principle can be used to measure its density?
Principle of operation of the 7812 gas densitometer: The sensing element of the sensor consists of a very thin metal cylinder that resonates at its natural frequency. The volume of the resonance cavity remains constant; as gas flows over the surface of the cylinder, the mass of the gas in contact with the cylinder depends on the gas density. As this mass increases, the vibration frequency decreases. In this way, it is possible to measure the actual vibration frequency of the gas.
Reply to 1# Thinker in the Sandstorm: The Yokogawa gas vibration-type density meter uses a sampling method for measurement, and after temperature and pressure compensation, it determines the density of the gas； American thermoelectric gas vibration-type densitometer, with direct insertion for measurement, used to determine the density of gases at high temperatures and pressures.