Battery packs: As strong as the weakest cell
Regular concentration checks on batteries guarantee a safety net in case of power outages. The intrinsically safe DMA 35 Ex performs density checks on battery cells in less than a minute!
Full power guaranteed
Many organizations such as transformer stations, power plants or hospitals require an emergency system. They are always equipped with a battery pack. In case of a power outage, the battery automatically takes over the voltage supply to keep essential functions alive, e.g. to notify the central station of the power failure, to activate the separator and to provide emergency lighting and fire alarms.
The battery pack consists of a large number of electrochemical battery cells, all connected in series. The electrolyte of the cells is usually sulfuric acid. Due to chemical reactions during discharge, the density of the electrolyte (or its specific gravity) decreases. The density of the battery acid gives information about the concentration of H2SO4 and the charging status of the battery. Depending on the result, the user knows whether the battery needs maintenance or needs to be exchanged. To detect and maintain the weakest cell(s) of the battery, a regular density check is mandatory. As a matter of fact, a battery pack is only as strong as its weakest cell.
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