| 摘要 |
PURPOSE: A freeze protection meter is provided to prevent a meter from being frozen to burst without changing a structure of the meter by installing a spacer member, which has a volume varied depending on pressure. CONSTITUTION: A freeze protection meter includes a body(110) having a water inlet(112) and a water outlet(114), an impeller(120) installed in the body(110) in such a manner that the impeller(120) is rotated caused by water flowing through the body(110), and a reduction gear section(150) rotated together with the impeller(120). A display section(160) has an indicating needle, which is rotated due to rotational force of the reduction gear section(150). A cover is coupled to an upper portion of the body(110). A spacer member(300), which has a volume varied depending on pressure, is installed in a space section formed at a lower portion of the body(110).
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