| 摘要 |
PURPOSE:To provide a densimeter that can be easily calibrated in the air and is capable of measuring the density of a very small amount of fluid by providing a cylindrical resonator one end of which is open with a temperature detection device and by connecting the resonator to the main body of the meter that includes a micro-processor by a cable. CONSTITUTION:A specimen fluid flows into the tip end of a cylindrical resonator 1 in the direction (a), and it flows out from a piercing hole 14 to fill the specimen. At first the detection end SE is left in the air and a calibration key KY is pressed down and the cylindrical resonator 1 is vibrated by a vibrating means. Resonant frequency is detected by a vibration detector 3 and the temperature is measured by a temperature detector 5 to calculate air density by a microprocessor. Next, the detection end SE is inserted into a fluid to be measured, and in the same way the resonant frequency and temperature and measured, and the density of a fluid to be tested is calculated, utilizing each data at each calibration. Calculated results are displayed digitally on a vibration indicator ID1 and the temperature on an indicator ID2. |
