| 摘要 |
PROBLEM TO BE SOLVED: To accurately grasp a hydrogen residual amount in a storage tank over the whole range of 0-100%. SOLUTION: This device is provided with the storage tank 3 packed with hydrogen storage alloy MH to store hydrogen supplied from a hydrogen cylinder 2, a quartz oscillator 20 provided in the storage tank 3 and formed with a hydrogen adsorption film 25 by surface treatment, a detecting circuit 13 for measuring a characteristic frequency of the quartz oscillator 20 varied in response to a hydrogen gas amount adsorbed to the hydrogen adsorption film 25, and a computing circuit 14 for computing the residual amount of the hydrogen in the storage tank 3, based on the characteristic frequency of the quartz oscillator 20 measured by the detecting circuit 13. COPYRIGHT: (C)2003,JPO
|
