Weighbridge, electronic weighbridge, weighbridge manufacturer introduces intuitive inspection of the weighbridge
2018-1-20 Jiujin Weighing Apparatus Factory
1. The first is the visual observation method. It is necessary to check the weighbridge and the bottom of the platform and whether there is any clogging of the debris around the platform. Is the gap of the limit qualified? Is there any damage to the cable, and whether the junction box is damp? The damaged state, as well as the instrument components, have no obvious signs of damage.
2, followed by the method of measurement comparison. Use the universal meter to measure the voltage file test for the bridge power supply (XK3190-A9 meter is +8V), whether the instrument working power supply (+5V) is normal (can be compared with a good meter), whether the sensor output signal is stable, several sensors Whether the output signal is too large or not. Use the multimeter resistance file to detect whether the cable is short-circuited, open circuit, and whether the resistance of the sensor is normal.
3. Alternative method: When the faulty component cannot be accurately judged by a simple detection method, the suspect device can be replaced with a good device or substitute, and the fault can be eliminated to determine the faulty device and location.
Introduction to the method of repairing the floor scale :
1. Observation method
Intuitively check whether there are any debris jams around the weighing platform and the bottom surface, whether the limit clearance is qualified, whether there is any damage to the cable lines, whether the junction box is damp, and whether the instrument components have obvious damage marks.
Example: There is a problem that the weighing is inaccurate and the variation is large. It was observed that the one end bridge was crushed and squeezed, and the weighing platform was squeezed. The entire weighing platform was stuck, and the lower ends of the weighing platform were also piled up by the accumulation of dust falling during long-term use. After normalizing the above problems, it will return to normal.
2, measurement comparison method
Use the multimeter voltage file to test the bridge power supply (XK3190-A9 instrument is +8V), whether the instrument working power supply (+5V) is normal (can be compared with a good meter), whether the sensor output signal is stable, several sensor output signals have No deviation is too large. Use the multimeter resistance file to detect whether the cable is short-circuited, open circuit, and whether the resistance of the sensor is normal.
3. Alternative method
When a specific faulty component cannot be accurately determined by a simple detection method, the suspect device can be replaced with a good device or substitute, and the fault can be eliminated to determine the faulty device and the location.
Example: In the judgment of some faults, the simulator is used to replace the sensor signal, and the meter display is normal or not to determine the instrument fault or the sensor fault. In this method, the usable substitute can be used instead of the suspicious device.
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