| 摘要 |
<p>PURPOSE: To facilitate installation of a system, reduce cost of a cable, and provide correct measuring data by preprocessing sensor resistance values for each place of each leak sensor to find a digitized measurement value. CONSTITUTION: Plural leak sensors 11 are separated into several groups, and each group 17 is connected through a common series data bus bar 23 to an operation device 25. In the case where the sensors 11 pertaining to the same group are close to each other, which the groups disposed in a star shape, for example, to be apart from each other through a wide space, it is favorable that the groups are separated to have separate series data bus bars 23 respectively. However, in the case where all the sensors 11 are close to each other, it is favorable that all the sensors 11 are connected by the single series bus bar. For example, in the case of three groups 17 having two integrated units 19 comprising the sensors 11 and preprocessors 21, an operation device 25 is connected to all the groups 17 through the common series bus bar 23 which is common in each group 17 only.</p> |
