Abstract: Corrosion monitoring technology is used to test the inner corrosion or destruction of device, under the proper operation, to avoid the fatal accident, extend device’s life-span, make de-vice work effectively. The pipeline inner corrosion monitoring system was developed and designed as the hardware core of mi-crocomputer, modem, programmable logical controller, signal
transfer device, corrosion probe and as the software platform of the virtual instrument language LabVIEW. The system can be used to evaluate the effect of anti-corrosion by the electronic re-sistance corrosion probe and linear polarization corrosion probe in the light of the inner electrochemistry corrosion degree and hy-drogen brittle tendency. The system was used in the northwest
of Sichuan diggings. The results show that the effective, reli-able online monitoring of the inner pipeline corrosion can be run by this system.

Key words: virtual instrument control, pipeline corrosion, long-distance monitoring