Pipeline systems and technologies

Monitoring of internal corrosion


Installation scheme of the CMS-PST-MTC Installation scheme of the CMS-PST-MTC


The CMS-PST-MTC is an internal pipeline corrosion and erosion monitoring system intended to monitor wall thickness changes of pipelines, tanks and other steel structures that transfer products containing highly aggressive, corrosive components (Н2S, СО2, etc.) and are operated in above-ground, underground, and underwater conditions, in all climatic zones.

The measurement method is a patented electromagnetic method based on the change of the DC potential drop, provided by means of a sensor matrix placed on the outer surface.

The system consists of 5 basic components:

  • Sensor matrix;
  • Sensor matrix controller;
  • Stationery (or portative) logger completed with:
    • Power supply,
    • Data transmission device;
  • Clamp terminal;
  • Software.

Detailed description

The system’s power supply source can be batteries, rechargeable batteries, solar cells, and other AC and DC sources.

Alternative power sources such as solar panels, wind generators or fuel cells can be used. The frequency of data collection is determined by the Customer and local conditions.

Installation of the sensor matrix should be carried out, as a rule, in the factory. The finished product (joint) can be installed at the Object, by means of flange connection or welding. In some cases, it is possible to install the sensor matrix in the field conditions, providing the special design solutions aimed to ensure the matrix installation possibility and to guarantee the quality of the anti-corrosive coating application and protective case installation, confirmed by the manufacturer.

Main technical characteristics of PCM-PST-MTC

Parameter Value
CMS-PST-MTC resolution, % of rated thickness 0,1
Operating temperature range while using a stationary logger from -40°C to +85°C
Operating temperature range while using a portable logger from -20°C to +70°C
Operating temperature range of the sensor matrix controller from -40°C to +65°C
Thickness of the measured surface, mm from 4 mm to 40 mm
Matrix shape Specified by design company. Concentration of the sensor matrix pins depends on the wall thickness of the controlled object.
Standard (maximum) quantity of pins per one matrix of the CMS-PST-MTC 28 (224) pairs
Communication channels

— Manual data extraction
— Wire RS-485
— Satellite
— Fibre-optic