| 摘要 |
<p>The tap, esp. for a liquefied gas bottle, consists of a housing (10) with a shut-off element (12) and an assembly section (16) for fitting to the neck of the gas bottle. It incorporates a level gauge in the form of an elongated rod (24) surrounded by a coaxial cylindrical tube (22), attached to the tap housing and extending down the depth of the gas bottle. The rod (24) is insulated electrically from the tube (22) by joints (30,32) of a ceramic or PTFE, and the level of the liquefied gas in the bottle is shown on a liquid crystal or LED display. A sound alarm can also be incorporated to indicate when the gas bottle is empty or its contents drop below a set level.</p> |
