Mechanical level gauge yog ib qho tseem ceeb accessory rau lub hwj chim generator roj tso tsheb hlau luam, muab ib tug txhim khu kev qha thiab ncaj qha pom kev nyeem ntawv ntawm roj theem. Nws yooj yim float mechanism nce thiab ntog nrog cov roj, xyuas kom meej qhov ntsuas tsis tas yuav tsum muaj hluav taws xob. Qhov ntsuas no tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau cov tshuab hluav taws xob hauv cov chaw taws teeb lossis qhov chaw hnyav uas cov tshuab hluav taws xob yuav ua tsis tau. Nws txoj kev tsim kho muaj zog tiv taus cov ntsiab lus, thiab 1 1/2' BSP xov tso cai rau kev teeb tsa yooj yim ntawm feem ntau cov roj tso tsheb hlau luam, muab qhov qhia meej thiab tam sim ntawm cov roj theem kom tsis txhob poob qis.