Problems that may occur when using the human body comprehensive tester
The human body comprehensive tester is a device designed to measure the comprehensive resistance of the human body. It can detect and alarm when the comprehensive resistance of the human body is greater than or less than 10.
Some customers have found such a problem: without wearing anti-static shoes, wearing ordinary shoes and stepping on the test pedal with one foot, the test result of the instrument will sometimes be "test passed" (the status indicator light is on). According to standard specifications, this type of situation is absolutely not allowed. Is it because the instrument itself has a quality problem or is it improperly used?
After repeated research by technicians, it is found that if the test button of the instrument is pressed by hand (the button is made of metal material), other parts of the body, such as the hand and the holder (stainless steel material) of the instrument, will form a conductive circuit with the human body. , Because the human body is conductive, the test result is qualified no matter whether you wear anti-static shoes or not. This action may be subconscious, but it will affect the test results.
So what can we do to avoid this situation?
1) Use the correct method and strictly control other parts of the body to touch the instrument during the test;
2) This situation can be avoided by using insulating spraying bracket material.