| 摘要 |
PROBLEM TO BE SOLVED: To realize miniaturization and economic configuration of a microcomputer type gas meter 1 without providing a dedicated connection terminal for an external device such as an incomplete combustion alarm or an origination automatic switching adjustor.SOLUTION: The microcomputer type gas meter comprises a communication terminal 3a to which an NCU can be connected, an alarm terminal 3b to which a gas leak alarm can be connected, and a microcomputer 4. The gas leak alarm, the incomplete combustion alarm and the origination automatic switching adjustor can be connected to the alarm terminal 3b. The settings by a memory of the microcomputer 4 enable the settings of terminal functions of the alarm terminal 3b to be changeable.SELECTED DRAWING: Figure 1 |
