| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable the detection of the residual amount of a liquid in a tank without viewing the tank in an electrostatic sprayer. <P>SOLUTION: An electrostatic sprayer (1) includes a pressure sensor (43) for detecting the pressure inside a tank (71), and a residual amount detection part (5) for output of a detected signal, determining that the residual amount of the liquid in the tank (71) is less than a specific amount, when the time required for the detected value of the pressure sensor (43) to reach the specific value, after an air pump (41) starts operating, exceeds the specific time. <P>COPYRIGHT: (C)2012,JPO&INPIT |
