| 摘要 |
<p>The invention provides a lightweight gas cylinder for the storage of compressed gas, comprising: a shut-off valve in engagement with the mouth of the cylinder; anl external 5 pressure sensor device for sensing the pressure in the cylinder, the pressure sensor device being in continuous communication with the interior of the cylinder; a temperature sensor device for sensing the temperature of the gas in the cylinder, the temperature sensor device being in thermal communication with the interior of the pressure vessel; a programmable computing device for calculating from resulting 10 temperature and pressure signals information concerning the amount of contents in the cylinder; and a display screen operatively associated with the computing device for displaying said information. 15 [FIGURE 11</p> |
