Operation, installation, and calibration instructions for the DESCO TB-8001 Wrist Strap Checker Model 04620 used to test ESD wrist straps.
The DESCO TB-8001 Wrist Strap Checker (Model 04620) is a portable, battery-powered device designed to test the electrical resistance of wrist straps in accordance with ANSI/ESD S20.20 standards. It features a green LED for a pass range of 800K Ohms to 10 Megohms and red LEDs with an alarm for resistance values outside this range. The unit is compact and intended for daily spot-checking of workers in small labs or production environments.
| Pass Range | 800K Ohms to 10 Megohms |
|---|---|
| Power Source | 9 Volt Battery |
| Calibration Standard | NIST traceable standards |
| Warranty Period | One year |
The acceptable range is between 800 kilohms and 10 megohms, indicated by a green LED.
If the resistance is below 800K, the red “LOW” LED lights and an alarm sounds.
Annual calibration is recommended to ensure the tester is operating within limits.