DMTA-10040-01EN, Rev. E, February 2018
Using the Instrument
279
Figure 5
‑
220 The readings for 40 % OD loss (left) and 60 % OD loss (right)
5.4.5
NFT Pitting (Differential) — NORTEC 600D Model
This near-field testing (NFT) application uses a differential configuration to detect
internal pitting in finned air-cooler tubing (also referred to as “fin-fan”) [see
Figure 5-221 on page 279].
Figure 5
‑
221 A finned air
‑
cooler tube (fin
‑
fan)
The near-field testing (NFT) eddy current technology is a rapid and inexpensive
inspection solution designed specifically for ID defect detection in carbon steel finned
tubes (see Figure 5-222 on page 280). NFT probes reduce inspection cost and improve
ease-of-use.
Содержание nortec 600
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