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 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.
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