Tecno-Inspec
Upgrade of a pulsed eddy current instrument
New electronics, firmware and software for a PEC instrument that measures steel wall thickness under insulation and detects corrosion without removing the cladding.
We fitted the existing instrument with a new control board with programmable logic, microcontroller, memory and Bluetooth. The acquisition software computes thickness and corrects for probe lift-off.
In 2019 we built a second version with a new battery module, grid measurements and Excel export.
What we did
- Control board with FPGA or CPLD, PIC18F66J50 and Bluetooth
- Microcontroller and programmable logic firmware (VHDL)
- LabVIEW software: acquisition, thickness calculation and lift-off calibration
- 75-page operating manual and battery manual
Technical data
| Application | Thickness under insulation and CUI |
|---|---|
| Probes | 4 |
| Filter | 11, 14, 27 o 140 kHz |
| Gain | ×1, ×2, ×4, ×8 |
| Memory | Up to 262,143 points |
| Year | 2014–2019 |