An instrument and method for measuring the volume of a hermetically sealed, variable volume, pressure conforming container. The X and Y direction portions have first and second pitches, the second pitch being larger, such as at least 3 times larger, than the first pitch. The layer stack includes an absorption layer, a multiplication layer, and a field-control layer. The SiAlON material further includes an intergranular phase. The switching control unit controls the supply of the power supply voltage based on at least one of the output level of the battery, a power onoff state of an electronic apparatus including the near field communication device, whether the electronic apparatus is connected to the battery, and whether the RF power supply voltage is generated. This manual guiding of the individual transport unit takes place in a virtually force-free manner.