The invention relates to a sensing and control device (40) and method for a weight measuring device (30) comprising a loading unit for loading material to be weighed. In order to be able to measure accurately with less expensive components, the sensing and control device comprises an analog circuit (50) and a
control circuit (60). The analog circuit (50) is configured to receive a weight measuring
signal, to convert the received weight measuring
signal into a first
voltage signal, to subtract a second
voltage signal from the first
voltage signal when the loading unit is loaded with material to be weighed to generate a third voltage signal representing the weight of the material to be weighed, the second voltage signal representing the weight of at least the loading unit not loaded with material to be weighed. The
control circuit (60) is configured to receive the first voltage signal when the loading unit is not loaded with material to be weighed, to convert the first voltage signal into a first
digital signal, and to generate a
pulse width modulation, PWM, signal having a pulse width, the pulse width representing the weight measured by the weight measuring device when the loading unit is not loaded with material to be weighed, and the
control circuit is further configured to convert the third voltage signal into a second
digital signal representing a weight measurement of the material to be weighed. The analog circuit (50) is configured to generate the second voltage signal from the PWM signal generated by the control circuit, wherein the voltage level of the second voltage signal is proportional to the pulse width of the PWM signal.