ESD protected area products should be tested:
1. Prior to installation to qualify product for listing in user's ESD control plan.
2. During initial installation.
3. For periodic checks of installed products as part of IEC 61340-5-1 Edition 1 2007-08 clause 5.2.3 Compliance verification plan.
As ESD floor and working surface matting get dirty which can increase their resistance. It is therefore recommended to check ESD surfaces regularly using a resistance checker.
The Vermason Low Resistance Tester has three selectable test ranges to check resistance paths: <1 ohm, <2 ohms and <10 ohms. Per ANSI/ESD S20.20, the required limit for equipment grounding conductors (such as banana jacks) is <1 ohm tested per ESDTR53. Per ANSI/ESD S20.20, the required limit for solder hand tools is <2 ohms (Product Qualification) and <10 ohms Compliance Verification tested per ESD TR53. The Low Resistance Tester is equipped with pass/fail (go/no go) audio and visual indicatorsthat activate to confirm that the grounding conductor being tested meets the required limit.
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