| 摘要 |
PROBLEM TO BE SOLVED: To shorten a patrol time for monitoring a pressure in a plant, etc., where many pressure gauges are set. SOLUTION: A plurality of pumps 1 are arranged in a predetermined arrangement in the plant. Each of the pumps is provided with a valve 2 and the pressure gauge 3-The pressure gauge has a first display part set to a front face for displaying the pressure, and a second display part 12 set to a rear face for displaying a warning when the pressure is abnormal. In monitoring the pressure, one can monitor the right and the left pressure gauges 3 with a line of sight 4a indicated by an arrow while moving straight between right and left device rows along a monitoring route 4 indicated by a dashed line. Conventionally, since the pressure gauge displays at one face, it is necessary for a monitoring person to move to an operation position for each valve 2 (position in the drawing where the person operates a handle 2a of the valve 2) and directly confirm an indication of the pressure gauge, making a monitoring route 5 considerably long. The monitoring route 4 in the apparatus and the method is considerably shortened in comparison with the prior art.
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