| 摘要 |
A float-type liquid level gauge assembly 20 is provided for measuring the level of a liquid, such as liquefied petroleum gases, in a tank. The liquid level gauge 20 includes a gear housing 50 which provides for an efficient way to couple gears together as well as to accurately assemble and align the components of a liquid level gauge. The liquid level gauge 20 includes a movable pivot arm assembly 70 supporting a float arm assembly 74. A gear on the pivot arm assembly 70 is coupled with a pinion gear 65 located in the gear housing 50. The pinion gear 65 has a shaped passageway 69 which accepts a similarly shaped drive shaft 40 which has a magnet 36 at one end. The magnet 36 extends into a passageway 44 on the lower side 30b of a gauge head 30 so as to be magnetically coupled to a level indicating dial assembly 32 provided on the upper side 30a of the gauge head 30. The shaped drive shaft 40 only allows for a limited number of ways the drive shaft 40 will fit into the pinion gear passageway 69, thus allowing efficient alignment of the magnet 36 with the level indicating dial 32.
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