ESD Systems - Questions And Answers

I intend to purchase the drag chain from esd systems on the model 14000. The question I would like to ask, is the 14000 drag chain effective in our plant which is conductive flooring. At present, we try a drag chain from a local source but when measured with the megaohmeter it reads 10¹⁰ or more which by any standard is not effective. Also, what is the weight of the 14000 like which I believe play an important role too. Please reply asap. Thanks. –Chin Hoe

The drag chain is only as effective as the ESD floor. If the floor is 1x10⁹ ohms, then the best you’d get for RTG readings from the drag chain through the floor would limited by the floor or 1x10⁹ ohms. It is also recommended to have the drag chain make contact with the floor for at least 6 inches and closer to 12 inches while ensuring that the chain does not interfere with the normal operation of the cart or become a hazard for people walking. The unit weighs approximately 0.1 lb or 0.05 kg. What is important is the contact resistance which is a function of area, surface roughness, contact pressure and the resistance of both materials (floor/drag chain)

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