Monitoring Cathodic Protection Systems with Moore’s CPMS: Reliable Corrosion Control

Introduction to CPMS

The CPMS (Cathodic Protection Monitoring System) from Moore Industries is designed to vigilantly monitor both above-ground and buried impressed current cathodic protection systems. Its role is critical: ensuring that pipelines, tanks, and structures receive the proper electrical protection to prevent corrosion and maintain durability.

How It Works

Installed at rectifier stations, the CPMS tracks voltage and current values from one or two transformer-rectifiers. It has multiple analog input channels and discrete (contact closure) inputs to sense critical parameters. The system consolidates this data and sends it to host control systems — like a PLC, DCS, or PC — over communication links.

Should any readings exceed preset thresholds or if a power supply is lost, CPMS can issue alarms to notify operators immediately. It also supports integration with Moore’s NET Concentrator I/O modules for expanding monitoring capacity.

Key Features That Stand Out

• Robust Communication: Dual MODBUS RTU ports (RS-485) and Ethernet (MODBUS/TCP) for simultaneous connections
• Built for Harsh Environments: Metal enclosure with strong RFI/EMI protection, operating from –40 °C to +85 °C
• Data Logging & Backup: Stores up to 64,000 timestamped data points, with internal battery backup
• Advanced Logic & Math: Embedded control engine (ISaGRAF) allows PID loops, calculation functions, and custom logic
• Expansion & GPS Time Sync: Works with expansion I/O modules; optional GPS time feature ensures accurate timing even without network time sources

Technical Highlights

• Input channels allow ranges like 0-100 Vdc, 0-100 mV, –5 to +5 V, 4-20 mA
• Discrete inputs handle contact closures (e.g., circuit breaker status)
• Accuracy: around ±0.1% full span typical
• Isolation: 1,000 V rms between case, input, output, and data ports
• Power: supports 24 Vdc or 90–260 Vac (user selectable)
• Interface: browser-based web UI for configuration and monitoring

Why This Matters for You (via General Tech Services)

For organizations operating pipelines, steel structures, or buried infrastructure, corrosion is a silent threat. Deploying CPMS ensures you:

• Detect system failures or anomalies before they cause damage
• Reduce maintenance costs by targeting actual problem points
• Enable remote monitoring, reducing the need for frequent manual checks
• Maintain compliance with industry standards and safety requirements

At General Tech Services, we provide full support for CPMS in the UAE and region — from supply and installation to programming, integration, and ongoing calibration. Our local engineers can help you choose the right I/O expansion, configure your system logic, and integrate CPMS into existing SCADA or control systems.