Eddy Current Technology Incorporated manufacturers probes for eddy current inspection of heat exchanger tubes. We manufacture probes from as small as 0.100 inches in outside diameter up to 4.0 inches in outside diameter. Probes are available for inspecting both non-ferrous and ferrous materials.
To order a probe, the customer must specify the outside diameter and wall thickness of a tube, as well as the alloy of the tube. Probe ordering information.
We manufacture two types of probes that are commonly used to inspect the finned tubes used in air conditioner chillers.
We manufacture a cross axis probe (designated X-Axis). X-Axis probes can be used to inspect both the finned and the skipped fin portion of these chiller tubes.
We also manufacture a probe which includes an X-Axis sensor and a differential sensor. These probes are designated XADS and have two 4-pin connectors, requiring an eddy current instrument with a minimum of two frequency channels. This is the most commonly used probe for inspecting chillers.
These probes are normally in stock in the following sizes:
.410 X-Axis 5 kHz 35/45 Ft. .490 X-Axis 5 kHz 35/45 Ft. .516 X-Axis 5 kHz 35/45 Ft. .560 X-Axis 5 kHz 35/45 Ft. .620 X-Axis 5 kHz 35/45 Ft. .650 X-Axis 5 kHz 35/45 Ft. .800 X-Axis 5 kHz 35/45 Ft. .880 X-Axis 5 kHz 35/45 Ft. .410 XADS 5 kHz 35/45 Ft. .430 XADS 5 kHz 35/45 Ft. .460 XADS 5 kHz 35/45 Ft. .490 XADS 5 kHz 35/45 Ft. .516 XADS 5 kHz 35/45 Ft. .525 XADS 5 kHz 35/45 Ft. .560 XADS 5 kHz 35/45 Ft. .575 XADS 5 kHz 35/45 Ft. .620 XADS 5 kHz 35/45 Ft. .650 XADS 5 kHz 35/45 Ft. .750 XADS 5 kHz 35/45 Ft. .770 XADS 5 kHz 35/45 Ft. .800 XADS 5 kHz 35/45 Ft. .860 XADS 5 kHz 35/45 Ft.
The 35/45 is the designator for length, indicating that the plastic tubing on these probes has a length of 35 feet. The wire from the sensor to the probe connector is 45 feet, which indicates that it extends 10 feet beyond the end of the plastic tubing.
In stock X-Axis and XADS probes are made with a heavy duty Type "H" nylon plastic tube.
The frequency for these probes is indicated as being 5 kHz, although the probes are actually used from a frequency of 2 kHz to about 100 kHz. Frequencies in the range of 2 to 10 kHz are normally used to inspect copper chiller tubes. Higher frequencies in the range of 20 kHz are used to inspect brass and 90/10 copper nickel chiller tubes. Frequencies in the neighborhood of 100 kHz are used to inspect titanium chiller tubes.
