How to correctly use the human comprehensive resistance tester
The one-leg human body comprehensive tester is a device designed with an intuitive LED display for measuring the comprehensive resistance of the human body (including the resistance of the human body, wrist straps, shoes, etc.). This 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 a 750KΩ-10MΩ circuit (for testing wrist straps) and a 750KΩ-100MΩ circuit (for testing shoes), this instrument is ideal for testing wrist straps and shoes.
The person in charge of our production department reported that their employees, including their supervisors, did not have anti-static shoes and wore ordinary shoes and stepped on the test pedal with one foot. The result of the instrument test would sometimes be "test passed" (the status indicator light pass is on). According to the standard According to the regulations, this kind of situation is not allowed to happen even once. 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 being used improperly? After returning to the company, after repeated research by our engineering and technical personnel responsible for purchasing, we found that when pressing the test button of the instrument (the button is made of metal), if other parts of the body, such as the hand, come into contact with the holder of the instrument (made of stainless steel), it will cause contact with the instrument. The human body forms a conductive loop, because the human body is conductive, and the test results are qualified regardless of whether the anti-static shoes are worn or not. This action may be subconscious, but it can affect test results. Such as solution:
1) This situation can be avoided if the material of the bracket is sprayed with insulation.
2) Tell customers the correct way to use it.