Wrist Strap Tester

About Wrist Strap Tester

AnESD Wrist Strap Testeris a precision device designed to verify the electrical resistance ofantistatic wrist strapsand their grounding systems, ensuring they meet criticalElectrostatic Discharge (ESD) safety standards. It checks whether the wrist strap, wearer, and grounding cord provide asafe and effective path for static dissipationpreventing bothESD damage to sensitive electronicsandelectrical hazards to the user.

Key Features & Functions

Resistance Measurement:

• Tests thetotal system resistance(wrist strap + wearers skin + grounding cord).

• Ensures resistance is within thesafe range (0.75 10 Megohms).

Fast & Reliable Testing:

• InstantPASS/FAIL indication(LED lights, buzzer, or digital display).

• Some models featurecontinuous monitoringfor real-time verification.

Compliance with ESD Standards:

• MeetsANSI/ESD S20.20, IEC 61340-5-1, and OSHA safety guidelines.

• Ensures wrist straps aresafe for use in electronics manufacturing, labs, and cleanrooms.

User-Friendly Operation:

• Simplyplug in the wrist straps cordandhold the metal contact(or press a button).

• Some testers includedual-functionality(wrist straps + footwear testing).

Compact & Portable:

• Used inESD-protected areas (EPAs), workbenches, and quality control checkpoints.

Why is Wrist Strap Testing Important?

Prevents ESD Damage:

• A faulty wrist strap can allowstatic buildup, damaging sensitive electronics (chips, PCBs, medical devices).

Ensures Worker Safety:

• If resistance istoo low (< 0.75 M), the wearer could be at risk ofelectric shock.

• If resistance istoo high (> 10 M), static charges wont dissipate properly.

Quality Control & Compliance:

• Regular testing isrequired in ISO-certified facilitiesand electronics manufacturing.

How Does It Work?

1. Plug the wrist straps cordinto the tester.

2. Press or holdthe metal contact (simulating skin contact).

3. The tester sends asmall, safe current(typically9V-40V DC) through the circuit.

4. Measures resistance and displays:

   • PASS (0.75 10 M):Safe for ESD protection.

   • FAIL (too low/high):Wrist strap or cord needs replacement.

Common Applications

Electronics Manufacturing(PCBs, semiconductors, microchips)
Aerospace & Automotive Industries(ESD-sensitive components)
Medical Device Assembly(static-sensitive equipment)
Laboratories & Cleanrooms(precision static control)

Best Wrist Strap Testers in the Market

1. 3M 702 Wrist Strap Tester Simple, reliable, LED indicators.

2. Desco 19253 Wristband/Footwear Tester Dual-functionality, rugged design.

3. Prostat PRS-801 Continuous Monitor Real-time testing for high-risk areas.

Conclusion

AWrist Strap Testeris amust-have toolfor any ESD-controlled environment, ensuringboth equipment safety and personnel protection. Regular checks prevent costly static damage and maintain compliance withinternational ESD standards.