How to use the human body comprehensive resistance tester correctly
The one-legged human body comprehensive tester is a device designed to measure the integrated resistance of the human body (including the resistance of the human body, wrist straps, shoes, etc.) with an intuitive light-emitting diode display. The instrument can detect and alarm when the comprehensive resistance of the human body is greater than 109Ω and less than 105Ω. The SL-033 single-legged human body comprehensive tester is equipped with 750KΩ-10MΩ circuit (for testing wrist band) and 750KΩ-100MΩ circuit (for testing). Shoes), this instrument is ideal for testing wrist straps and shoes.
Question: The person in charge of the XX production department reflected that their employees, including the supervisor, did not have anti-static shoes, and the result of the instrument test after wearing the ordinary shoes and pedaling the test pedal was sometimes “test pass” (the status indicator pass is lit). According to the standard specifications, such a situation is not allowed at one time, and the customer suspects that it is a product quality problem. Why does this happen? Is there a quality problem with the instrument itself or is it improperly used? After returning to the company, after repeated research by our engineering and technical personnel responsible for purchasing, the test button (the button is made of metal material) is pressed by hand, and if other parts of the body, such as the hand, touch the bracket of the instrument (stainless steel), The human body forms a conductive circuit because the human body is electrically conductive, and the test results are acceptable regardless of whether or not the antistatic shoes are worn. This action may be subconscious, but it will affect the test results. Such as the solution:
1) This can be avoided if the material of the bracket is insulated and sprayed.
2) Tell the customer the correct way to use it.