Cathodic protection remote monitoring

For efficient and digital Cathodic protection management

Withthegrid

Remote monitoring devices to monitor your complete cathodic protection system include: Rectifiers, anode, testpoints, drains, etc.

Also, they carry out specific cathodic protection functionality:

  • Measure AC+DC voltage and current
  • Measure frequency
  • Open circuit potential measurement (together with rectifier)
  • 24hr on potential measurement
  • 24hr stray current measurement (Coupon)
Withthegrid cathodic protection system

Device specifications

  • Product code: CP-pole
  • Cathodic protection pole device: Range and accuracy of AC+DC voltage: +/- 50mV-35V @ +/- 1% + 1 digit resolution
  • Range and accuracy AC+DC current: +/- 10mA-20A @ +/- 2.5% + 1 digit resolution
  • Frequency AC: 16 – 100 Hz (digitally filtered)
  • Number of AC+DC voltage channels: 5 + 1 ref.
  • Number of channels voltage current: 1 (in combination with max. 3 voltage channels)
  • Impedance: > 4 MOhm
  • Switch accuracy: +/- 1 ms
  • Power supply: Battery (without replacement for 6 years with 4X / day measurement)
  • Communication protocol: GPRS / NB-IoT / LTE-M
  • Remote adjustable measuring frequency (1X / 5 minutes to 1X / week)
  • Switching off the device to carry out works
  • IP rating: 65 (Modbus variant: IP20)
  • Dimensions: 250*80*70mm
  • Conform the NEN-norms 13509:2003
  • Remote adjustment of measurement frequency (1X/minute to 1X/week)
  • Remote pausing of measurements during works
  • Does not need to be physically decoupled during welding

More specifications:

  • Product code: CP-modbus
  • Read Amstel rectifier
  • Adjust Amstel rectifier settings
  • Change measurement frequency
  • Turn off rectifier for works
  • Communication protocol: GPRS/LTE-M
  • IP-rating: 20
  • Dimensions: 90*53*58mm
  • Power supply: 24VDC
  • Product code: CP-rect-analog
  • Cathodic protection pole device: Range and accuracy of AC+DC voltage: +/- 50mV-35V @ +/- 1% + 1 digit resolution
  • Range and accuracy AC+DC current: +/- 10mA-20A @ +/- 2.5% + 1 digit resolution
  • Frequency AC: 16 – 100 Hz (digitally filtered)
  • Number of AC+DC voltage channels: 5 + 1 ref.
  • Number of channels voltage current: 1 (in combination with max. 3 voltage channels)
  • Impedance: > 4 MOhm
  • Switch accuracy: +/- 1 ms
  • Power supply: 230V
  • Communication protocol: GPRS / NB-IoT / LTE-M
  • Remote adjustable measuring frequency (1X / 5 minutes to 1X / week)
  • Switching off the device to carry out works
  • IP rating: 65 (Modbus variant: IP20)
  • Dimensions: 250*80*70mm
  • Conform the NEN-norms 13509:2003
  • Remote adjustment of measurement frequency (1X/minute to 1X/week)
  • Remote pausing of measurements during works
  • Does not need to be physically decoupled during welding

Start your Withthegrid CP system today!

Conact us to obtain your devices or request a demo

What is cathodic protection?

Cathodic protection is a way of protecting pipes from corrosion. In fact, this preventive measure supplies a direct current to steel pipes that run into soil or water. Due to the electric current on the steel pipes, there is a potential drop.

What is telemetry?

Telemetry, or remote control, is the remote monitoring of conduits with the aid of sensors. In fact, Withthegrid sensors are connected to an asset and periodically send encrypted measurement data to an online dashboard. In addition, our digital map shows which parts of the pipe are functioning properly and which ones need attention. Also, in the event of a malfunction, you are immediately notified. Moreover, the panel will then show what action needs to be taken. Once implemented, actions can be analyzed.

Measuring and monitoring cathodic protection with Withthegrid sensors:

Measuring and monitoring cathodic protection

Withthegrid sensors monitor cathodic protection on steel pipes. In fact, our sensors are connected to the rectifier and various measuring points along the pipe. For example, both the voltage ( DC + AC ) and the current (DC + AC) are measured (in accordance with NEN-EN 13509: 2003 ). Also, a coupon measurement is possible to measure the IR-Free (in accordance with ISO-NEN18086: 2015). Then, the data is then sent to a digital dashboard. In general, this allows transparency within the entire CP system. Additionally, one can switch the rectifier for the execution of off potential measurements or for doing work on the pipelines.

Which CP installations does the Withthegrid system work on?

Modbus connection rectifiers: For the Amstel rectifiers with a Modbus connection, a specific sensor is available (Amstel modbus sensor powered by Withthegrid). In fact, it ensures that settings in the rectifier can be adjusted remotely. Also, it enables precise and synchronous switching. 

Other rectifiers: For instance, other rectifiers are read out and switched via an analog connection. In fact, accurate and synchronous switching is made possible thanks to an external Eaton relay.

CP – points: The Withthegrid sensors can lie in metal poles and round plastic poles.

AC / DC-drains: The Withthegrid sensors may also lie in drains.