When weighing, please put the weighing scale on a flat ground to avoid affecting the weight. When using weighing scale, it is best to test it before using it, so as to avoid the situation of insufficient electricity and affect the accuracy of weighing. Generally speaking, there will be a toggle switch at the bottom of the scale. This switch is the unit of measurement. You can usually choose kilograms or pounds. Kg will be displayed on the kilogram and lb will be displayed on the pound.
In order to avoid inaccurate weighing, don't shake on the scale and keep your body balanced, so the result is the most accurate. Stand on the human scale and keep your feet balanced so as not to affect the accuracy of the numerical value. The pointer of general mechanical health scale often deviates and needs to be adjusted frequently. Generally, check before weighing to ensure the accuracy of the pointer.
Principle of electronic scale
Electronic scale is a kind of weighing instrument, which is a tool to measure the mass of objects by using Hooke's law or the lever balance principle of force. Electronic scale is mainly composed of three parts: bearing system (such as scale plate and scale body), force transmission and conversion system (such as lever force transmission system and sensor) and numerical indication system (such as dial and electronic display instrument).
According to the structural principle, it can be divided into three categories: mechanical scale, electronic scale and electromechanical combination scale. When an object is placed on the scale, pressure is applied to the sensor, which elastically deforms, thus changing the impedance. At the same time, the excitation voltage is used to change and output the changed analog signal, which is amplified by the amplifier circuit and output to the analog-to-digital converter.
Reference to the above content: Baidu Encyclopedia -lo