| 摘要 |
PURPOSE:To perform the measurement of the concn. of hydrogen in gas, by bringing gas containing hydrogen into contact with an amorphous alloy and detecting th change in electric resistance by the absorption of hydrogen by said amorphous alloy. CONSTITUTION:Amorphous alloy thin films are vapor deposited on a square shape glass substrate 20 as resistors 21-24. The resistors 22, 24 and a current terminal 30 are blocked from the outside by a glass lid and the resistors 21, 23 are contacted with hydrogen gas by a gas introducing pipe 29. A heat generator 31 is attached to he back side of the substrate. By supplying a current to the heat generator 31 in such a state that a switch 32 is closed, a bridge can be held to a predetermined temp. The switch 26 is closed and gas is introduced from the gas introducing pipe 29 to bring the resistors 21, 23 into contact with hydrogen gas. The amorphous alloy as the resistor absorbs hydrogen in gas to increase electric resistance and a bridge circuit becomes non-equlibrium. The output voltage from the bridge is recorded by a recorder 28. |
