| 摘要 |
PROBLEM TO BE SOLVED: To provide a cleaning device of a liquid level detector, which improves the easy washing and workability of a pressure-receiving diaphragm of a liquid level transmitter. SOLUTION: The cleaning device of a liquid level detector is provided with a tubular member 30 connected so that an end part is connected with a lower part of tank 1 which accommodates a fluid, and the other end part may face a pressure-receiving diaphragm 51 of a liquid level detector 5 which detects the liquid level of the tank, a fuel injection equipment 31 which blows jet flow of a fluid 4 for washing to the pressure-receiving diaphragm in such a way that the inside and outside of this tubular member is penetrated, and is supplied from the outside, a solenoid operated valve 32 which opens and closes the passage of this fuel injection equipment, and a time limit timer 33. In cooperation with this solenoid operated valve, the output of the liquid level detector is made to hold when this solenoid operated valve is open, and it is made through when this solenoid operated valve is closed. COPYRIGHT: (C)2005,JPO&NCIPI
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