| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure liquid level in a container, in correspondence with bulk delivery without the need for applying additional treatment on a high-pressure liquefied gas container. SOLUTION: A sensor-containing space 37 opened in a down state is formed in the lower part of a valve body 21 and parallel with a gas flow passage 27c. A ultrasonic sensor 14 is contained in the sensor containing space 37, in a state of being supported by a pressure pad 40 and situated integrally with the valve body 21. The pressure pad 40 is pressed in the inlet of the sensor containing space 37 via an elastic member 42. Furthermore, the ultrasonic sensor 41 is connected to a measuring and computing part 44 via a lead wire 43. The measuring and computing part 44 is mounted in a case 45, together with a display part 46 and a communication part 47 made into an integral piece to constitute an electrical accessory unit 25. The electrical accessory unit 25 is mounted on a valve body 21 with screws and the like and integrally mounted on a valve body 21 and the measuring and computing part 44 and a display part 46 are also integrally mounted on the valve body 21.
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