Pipeline systems and technologies

Remote control of the cathodic protection parameters CMS-PST-CPR

Description of CMS-PST-CPR

The CMS-PST-CPR is intended for integration any digital and analogue cathodic protection rectifiers (CPR) and drainage protection units (DPU) which don’t have the remote control functions into the corrosion monitoring system.

CMS-PST-CPR functions
When working with analogue CPRs:

  • Measuring analogue signals of internal and external CPR circuits;

  • Receiving and processing signals from sensors;

  • Transmitting the alarm messages in case of the sensor actuating and exceeding the monitored parameters out of the given range.

Calibration of CMS-PST-CPR Calibration of CMS-PST-CPR

CMS-PST-CPR functions When working with digital CPRs:

  • Receiving data via RS-485 serial interface;
  • Transmitting data via wireless communication channels;
  • Transmitting the alarm messages in case of the sensor actuating and exceeding the monitored parameters out of the given range.

In addition to CPR monitoring and control, the system allows you to monitor cathodic protection parameters at installation location remotely.

Characteristics of measuring channels

Parameter Value
CPR output voltage  ("pipe - DPU rail" voltage) 0…100 V
CPR output current (75 mV shunt voltage drop) 50/100 A
Drainage protection device current ± 500 A
CPR input voltage 0…300 V
CPR current power supply 0…25 А
OFF potential of the structure ± 3 V
ON potential “structure – reference electrode up to 4 channels” ± 30 V
AC voltage “structure – reference electrode” 0…100 V
DC “structure – coupon” ± 50 mA
AC “structure – coupon” 0…50 mA
Additional measuring channels of the ON potential до 3-х