The Corrosion-Erosion Monitor can be interfaced using Ethernet, RS-485/422/232, acoustic modems or indirectly using battery packs with internal logging and a USB interface.
The instrument has a dual Ethernet interface built in, and supports Modbus TCP/IP, OPC UA, FTP, HTTP, NTP and numerous other IP-based industry standard protocols. As a member of SIIS, the Subsea Instrumentation Interface Standards JIP, ClampOn participates in developing the standard for Ethernet-based instrument interfaces subsea (SIIS Level 3), and continuously aligns the interface of the Corrosion-Erosion Monitor with the latest version of the standard.
In case Ethernet is not available on the control system side, the subsea CEM also has serial interfaces (RS-485 and RS-232) which support Modbus RTU. Whether the Ethernet or direct serial interfaces are used, the instrument can be managed via a transparent link using the CEM Client application, which supports rich functionality (software updates, historical trending etc.) using user defined Modbus function codes.
On locations without wired communication and/or power, the CEM can hand off results via an acoustic link, or store the results in a retrievable battery pack. The acoustic link or battery pack can also communicate configuration updates to the subsea instrument.