Anti-static calculator friction voltage test method:
Hold a dry cotton cloth, apply appropriate pressure with your palm at a frequency of about 120 times/min, and rub a certain part of the device under test 20 times in one direction. Use a non-contact electrostatic voltmeter, and keep the distance between the test probe and the device under test at about 5cm. , observe the value displayed on the instrument.
Surface resistance/system resistance: ANSI/ESD S20.20 IEC61340
Features:
1. Clean, no precipitation, no greasiness, no blackening
2. Non-humidity dependent, permanent anti-static; ESD performance does not change with temperature, humidity, time and environment
3. Resistant to alcohol, alcohol, low humidity, friction, and high reliability