Electronic scales display Err is mainly no signal, cause a weight indicator wiring is bad, out of the virtual welding, signal line disconnected, cause two load cell damage caused by.
Extended information:
1, electronic scales belong to a kind of weighing equipment, the use of Hooke's law or the leverage of force balance principle to determine the mass of the object tool. Electronic scales are mainly by the load-bearing system (such as scales, scales), force transfer system (such as the lever force transfer system, sensor) and the value system (such as dials, electronic display instrument) 3 parts. According to the structural principle can be divided into mechanical scales, electronic scales, electromechanical combination of three major categories of scales.
2, when the object is placed on the scale, the pressure is applied to the sensor, the sensor deformation, so that the impedance changes, while the use of the excitation voltage changes, the output of a change in the analog signal. The signal is amplified by an amplifier circuit and output to an analog-to-digital converter. The signal is converted into a digital signal that can be easily processed and output to the CPU for arithmetic control. the CPU outputs this result to the display according to the keyboard commands as well as the program. Until the result is displayed.
3, in accordance with the "People's Republic of China *** and the State Measurement Law" and "People's Republic of China *** and the State Compulsory Certification of the work of the catalog of measuring instruments," the requirements of the electronic scales as a public standard of measurement of the community, the departments and enterprises, institutions used for the highest standard of measurement of the electronic scales, as well as electronic scales used for trade settlements, safety and security, medical care and health, environmental monitoring, before use All need to be measured and certified before use. Not in accordance with the provisions of the application for metrological verification, or by the unqualified test, not to be used.