Questions
What is the meaning of "+2 characters" in the basic accuracy?
"+2 characters" means that the last digit of the display allows 2 digits to jump up and down.
Is the DC resistance test current constant?
The test current is constant in the corresponding range, and there are 7 types of currents from 1A to 1uA.
TH2512 series resistance meter is divided into several ranges. What is the test current of each range?
20 milliohms 1A, 200 milliohms-2 ohms is 100mA, 20 ohms is 10mA, 200 ohms is 1mA, 2K-20K is 100uA, 200K is 10uA, and 2M is 1uA.
What are the precautions for the user-made probe test clip of TH25XX series low resistance tester? How should it be modified to ensure the test accuracy?
The probe is required to be as short as possible, and the test wire should be as short as possible, and the four terminals should be directly connected to the probe.
When TH2512 is testing the contact resistance of copper materials, high current will cause the temperature of the copper materials to rise, which will cause the test data to float. What should I do?
Reduce the current and choose a large range test.
What are the precautions for TH2512 series short-circuit reset?
When the TH2512 series is short-circuited to zero, please note that the direction of the test chuck must be one-to-one correspondence, otherwise the zero can not be cleared.
Is it possible to test four-terminal resistance devices?
The four-terminal resistance device can be tested only after the test clip is restructured.
What is the difference between TH2683 and TH2681 series?
The data of TH2683 is digital display and easy to read. The data of TH2681 series is displayed by pointer, which is more intuitive but difficult to read. Moreover, 2683 has interface functions, which is convenient for automatic testing. It can be connected to a computer to save and print test data. .
The test data of TH2683 cannot be stabilized, and it keeps jumping, especially in the GΩ range. How to solve it?
Reduce the humidity of the test environment and eliminate surrounding interference.
Why does the bad light on TH2681/A just turn on when it is tested?
Because at the time of the test, there will be an interfering sharp pulse input at the signal input terminal, and the bad light will light up after amplification.
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