The resistance file of the digital multimeter cannot be reset to zero
The resistance file of the digital multimeter cannot be reset to zero
This is a multimeter calibration problem.
It is a common feature of digital multimeters that the multimeter does not return to zero.
It has little relationship with temperature, humidity, and use environment.
If it is within 5 jumping characters, it is generally considered qualified
For example, Fesitek FT368 multimeter, with an accuracy of 5/10,000,
The short-circuit resistance of the needles is qualified between -0.02~0.02 ohms.
As you said above, it may be a problem with the calibration of the watch when it leaves the factory.
What should I do if the resistance file of the digital multimeter is not 0 when it is short-circuited
Press and hold the HOLD+RANGE key at the same time for 10 seconds to be 0.
There are portable devices for basic fault diagnosis of digital multimeters, and there are also devices placed on the workbench, and some resolutions can reach seven or eight digits.
Digital multimeter is an electronic instrument used in electrical measurement. It can have many special functions, but the main function is to measure voltage, resistance and current. Digital multimeter, as a modern multi-purpose electronic measuring instrument, is mainly used in the measurement fields of physics, electricity and electronics.
Safety Features of Digital Multimeter
1. Fuse current input protection.
2. Use a high-energy fuse (600 volts or higher).
3. High voltage protection (500 volts or higher) in resistive mode.
4. Voltage transient protection (6000 volts or higher).
5. Safely designed test leads, safety handles, etc.
6. Independent security certification.
