At more than 80% of all production sites, storage tank level measurement of liquids and additives is done manually, which is time- and cost-intensive. Often, it results in missing stocks only being registered when the tank has emptied and production has ground to a halt. Over-stocking to preclude such situations is usually not viable due to the added storage costs involved. Often, the measuring points are hard to access, far flung and/or difficult to supply power to.