Single- and Dual-Wire Monitors: Which Performs Better Under the Big Top?

by Kathy S. on August 5, 2015

Single- and Dual-Wire Monitors--Which Performs Better Under the Big TopHave you ever compared electronics assembly to tightrope walking? While some days you may feel as though you’ve joined the circus, the common denominator here is—or should be—the beloved safety net. Without it, one misstep and your tightrope performance may fall flat.

What about in the workplace? What happens if an operator’s wrist strap malfunctions? Will your single-wire monitor catch you? With the dual-wire continuous monitor, even if one conductor is severed, you can always fall back on a reliable path-to-ground with the other one.

Single-wire continuous monitors, also known as impedance monitors, are also easily fooled. Great for your tightrope-turned-magic act, but not so great for safeguarding sensitive components. Single-wire monitors send a signal down the wire to the wrist strap expecting to find a mass (a person) at the end of the coil; they cannot determine if a person is actually electrically connected.

Dual-wire continuous monitors or resistance monitors, on the other hand, measure the resistance of the wrist strap in combination with the person, and signal an alarm if the product exceeds preset levels.

For the performance of a lifetime, shop All-Spec. We carry a broad selection of foolproof, dual-wire continuous monitors, so you can rest assured a reliable path-to-ground in just about every situation.

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