Pro-Guard® is a patented probe and circuit design that cancels out the effects of
on the probe, preventing false indications. Two Ryton®, polysulfone, or ceramic
keep the probe signal from shorting to ground through the coating. In addition, an electrically active metal band generates a
field of electricity that keeps the probe signal from shorting to ground. The combined effects of the insulators and the active guard make the VRF™ Series with Pro-Guard® the most reliable sensor for almost any application.
