| 摘要 |
<p>A level gauge (106) includes at least one antenna (216) configured to transmit wireless signals towards a material (104) in a tank (102) and to receive wireless signals reflected from the material in the tank. The level gauge also includes a housing (108, 202, 302, 402) having an outer portion (204, 304), a raised rim (208, 308) within the outer portion, an angled portion (206, 306) that extends between the outer portion and the rim, and a concave portion (210, 310) within the rim. The concave portion forms a crater within the housing. The at least one antenna is configured to transmit and receive the wireless signals through the concave portion of the housing.</p> |
