) A Battery Hydrometer is an instrument, which allows us to measure the density

Question

) A Battery Hydrometer is an instrument, which allows us to measure the density of the electrolyte in a lead acid battery (e.g., a car battery). We suck a sample of electrolyte into the hydrometer, place the hydrometer upright, and then check how deep in the electrolyte the green and red floater sits. Note that the device is designed such that only part of the floater is ever submerged in the electrolyte, it is never completely submerged. Explain how this device measures the density of the electrolyte.

Explanation / Answer

A battery hydrometer is an instrument that is used to measure the specific gravity or relative density of the liquid in the battery. This hydrometer is made up of a sealed glass tube with a light weighted bulb to make the hydrometer float upright in fluid, and inside the stem is a paper scale, which is used to make readings.

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