Is there any kind of build up that VEGAPULS 64 can’t handle?
Yes, there is. An electromagnetic wave must be able to pass through something, so that it can be reflected back. In other words, the build up can just get so thick that no signal at all can get through.
However, what we’ve accomplished with VEGAPULS 64 is greatly increased dynamic range and as a result, signal attenuation, or damping, is no longer a critical factor. The instrument has much higher sensitivity than previous models with much more amplification in its electronics, so it can better detect and process weaker reflected signals.
In my seminars, I always compare this capability to the human ear or eye, both of which have an incredibly large dynamic ranges. The ear's starts at about 30 dB, and we call this the hearing threshold. The audible range then extends from there to extremely loud. This is a huge dynamic range for volume detection and in principle, the VEGAPULS 64 and 69 work the same way. That’s how we get right up to 120 dB.
Then there is also a very special function that the electronics bring: STC (Sensitivity Time Control). This function ensures that unwanted reflections caused by build in the near range up are simply blocked out. It’s very impressive and represents a big step forward.