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Thiết bị kiểm tra tĩnh điện Hakko 498



The Hakko 498 system tester checks wrist straps, grounding wires, and the contact resistance between the wrist strap and the skin quickly and simply.


  1. Plug in the lead provided with the 498.
  2. Set the decade resistance box per Table I and connect it between the clip on the 498 lead and one end of the test lead.
  3. Press the touch-plate down with the free end of the test lead. Be sure to hold the insulated portion of the lead so that body resistance does not enter into the loop.
  4. Check the reading against Table I, below, to verify upper and lower limits.

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