If you are not using a continuous or a constant monitor, a wrist strap should be tested while being worn at least daily. This quick check can determine that no break in the path-to-ground has occurred. Wrist straps should be worn while they are tested. This provides the best way to test all three components: the wrist band, the ground cord (including the resistor) and the interface with the operator's skin. If the wrist strap tester outputs a FAIL test result, stop working, and test the wrist band and cord individually to find out which item is damaged. Replace the bad component, and repeat the test. Obtain a PASS test result before beginning work.
The Vermason High Speed, High Accuracy Wrist Strap Tester comprises a digital test unit controlled by a programmable IC. It measures the resistance in the circuit including the body of the operator. The instrument will indicate whether the resistance is in the ranges specified in EN 61340-5-1 using Annex A test method A.1.
The Vermason Compact Wrist Strap Tester
can be used to test personnel wrist straps. The tester uses LEDs and an audible alarm to indicate whether the measured resistance is within the range specified by EN 61340-5-1.
The Vermason Portable Wrist Strap Tester
is a battery operated “on demand” wrist strap tester. When the wearer of a wrist strap plugs in their coiled cord and pushes the metallic electrode of the Portable Wrist Strap Tester, a path for current flow is completed from the wearer’s skin, through the wrist strap. This action will cause the green “test good” LED to illuminate as long as the resistance of the circuit path is between 750 kilohms and 35 megohms.
The Vermason AC Outlet Analyser and Wrist Strap Tester
is an easy-to-use, low cost, plug-in tester. It is designed to confirm the proper orientation of hot, neutral and protective earth ground. The product can also be used as a wrist strap tester per IEC 61340-5-1 clause A.1.
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