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AutoLog® Cathodic Protection Monitoring System

AutoLog Cathodic Protection Monitoring System is complete solution for remote monitoring (and optionally controlling) different kinds of immersed current cathodic protection applications, mainly to protect underground pipelines used in oil and gas distribution systems, but the same system can be used to monitor other immersed current CP applications like tank farms, oil platforms etc.


  • Based on well proven AutoLog RTU technology. (Used by e.g. by world's biggest oil producer company Saudi Aramco in it's nation wide CP system in the Kingdom of Saudi Arabia)
  • Wide operating range -30°...+70°C.
  • Reliable Solution based on almost 40 years experience and 10.000+ supplied RTU controllers and solutions.
  • Can communicate with multiple interfaces like GSM, Radio, TETRA, RS-485, Fibre Optic, TCP/IP, etc.
  • Advanced and modern turnkey SCADA solutions. (Traditional-, Web- and IoT Cloud SCADA systems)
  • Advanced GSM/GPRS/SMS communication.
  • Compact and economically priced solution with many I/O, communication and other feature variants.
  • Complete solution directly from Finnish hardware manufacturer and software project designer.
  • IP65 / NEMA-4X protection class, Ex class 1 zone 2 enclosures, or as specified
  • 3-way Isolators for 0-100V and 0-50mV and 0-5V etc. analog inputs (max. 1500 VDC)
  • Web based, multi featured interface for analysing CP rectifier statuses.
  • Centralized and shared information. Map locations, statuses, alarms, historical measurement trends and -reports, Alarms forwarding to GSM and e-mail, system diagnostics, etc.
  • 10 years spare part guarantee


AutoLog Cathodic Protection RTU datasheet
AutoLog Cathodic Protection GSM-RTU datasheet

AutoLog Cathodic Protection Isolated Measurements to 4-20mA Transducer datasheet


AutoLog Cathodic Protection GSM Monitoring System presentation


Contact us and ask AutoLog Cathodic Protection Monitoring System specification. (Available)


AutoLog Cathodic Protection Monitoring System (The Kingdom of Saudi Arabia, Saudi Aramco)
AutoLog CP Data Logger Test System (England, CP system manufacturer)
AutoLog CP RTUs, (Two CP Transformer manufacturers in the KSA)

AutoLog Technology

The Cathodic Protection Monitoring System is based on well-proven AutoLog technology. AutoLog RTU controllers has been designed and manufactured in Finland by FF-Automation since 1976. Almost 40 years AutoLog control units and complete remote monitoring and controlling solutions has been used all over the world. e.g. by world's biggest oil producer company Saudi Aramco uses AutoLog CP RTUs and SCADA system in it's nation wide CP system in the Kingdom of Saudi Arabia. FF-Automation has long term knowledge and capability to make reliable, flexible and long life span solutions, with complete support and training for local installation-, operation- and maintenance teams. The investment costs and payback time can be estimated beforehand.

cathodic protection RTU

System Description

The AutoLog Cathodic Protection RTUs (also called as WRMU - Wireless Remote Monitoring Unit) are installed on the transformer rectifier site. Normally the CP-RTU unit is installed on the pole inside the fenced area. Normally the power is supplied from the rectifier. Rectifier CP current is measured as a voltage (0-50mV) over the shunt resistor located in the rectifier. Rectifier voltage is measured directly from the rectifier output and it is normally in the range of 0-100VDC. The AutoLog CP-RTUs are designed to withstand the very harsh outdoor CP site conditions e.g. high underground currents, severe desert lightning, sand storms, high peak temperature (+70°C), corrosive climate etc.

Send e-mail and ask AutoLog Cathodic Protection System specification for detailed system description.

The AutoLog CP GSM-RTUs communicate wirelessly and bidirectionally with CP Cloud SCADA System servers (Based on AutoLog ControlMan Cloud SCADA System) through GSM / GPRS / Internet networks. The default GPRS communication can be optionally replaced with SMS as backup communication method. Servers and CP GSM-RTUs can be maintained remotely via GSM and Internet networks.

The ControlMan servers are hosted by well proven Internet hosting companies with 24/7/365 maintenance and data backup plan. ControlMan application is always running on the latest server technology and software platform. Customer doesn't need own server or maintenance teams for the server. Servers receive, store and share the information to authorized users through secure https:// connection. The ControlMan's user interface can be opened anywhere without any client software installations using normal web browser. The ControlMan is very long term, reliable and high technology solution.

The ControlMan system is easily expanded and maintained. New configurations can be made remotely. System allows easy creation of several user groups with different user levels. System can be expanded unlimitedly by adding new control units and servers.

Optionally if customer wants to have own server PC, the ControlMan Cloud SCADA system can be installed on the local server or replaced with Indusoft Web Studio HMI/SCADA software. FF-Automation has distributed, educated and made several projects with this award winning software since 2003. We have also designed drivers (GPRS & SMS) for communication between Indusoft and AutoLog GSM-RTUs.

Maintenance, training and support

FF-Automation can give comprehensive and long term support and training for the local installation, operation and maintenance teams. The ControlMan servers and Web SCADA application can be maintained remotely by FF-Automation engineers. The ControlMan system reports automatically if something abnormal happens in the system so a local maintenance team and FF-Automation engineers can solve the problems immediately.

Ask for an AutoLog® proposal

Without commitment FF-Automation will analyse your cathodic protection monitoring system or other system requirements free of charge.  Therefore there is nothing to lose and everything to gain by requesting an AutoLog quotation for a system to monitor and control your cathodic protection rectifiers or other application.

AutoLog® RTU hardware service

FF-Automation guarantees delivery of spare parts for 10 years after initial product delivery, and will carry out the service for AutoLog® control systems according to a predefined order of priority and price structure. So there are no unpleasant surprises or additional costs with AutoLog products.
We can supply our customers, machine and equipment manufacturers, with their own stock of spare parts for easy servicing of their equipment. If desired, the total pricing of an AutoLog® RTU control system can be determined on the basis of a service contract.

Please call or e-mail to get more information!

Eräkuja 2
01600 VANTAA
Tel: +358 10 2190 500
Fax: +358 3 5846 711

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