Rectifier Monitoring

Industrial-grade rectifier monitoring starts here.

When it comes to cathodic protection and pipeline integrity, precision and uptime are everything. Elecsys Connect™ delivers real-time rectifier monitoring with voltage, current, and potential measurements—plus GPS-synchronized interruption and compliance-ready reporting. Backed by rugged RMUs including the Scout XP, ISM-4, Watchdog Ranger and Watchdog II, Elecsys Connect helps infrastructure teams remotely manage field assets, reduce site visits, and maintain regulatory compliance with confidence.

Common applications:

Voltage, current, and potential measurements
Pipe to soil “On” and “Off” voltage potential measurements
Additional pipeline negative return current measurements
Alarm notification of abnormal operating
Rectifier current interruption (Scout XP and WD2)

Watchdog Scout XP

The industry’s most reliable, interruptible rectifier monitor.

The Watchdog Scout XP™ is a rugged, field-proven remote monitoring solution designed for cathodic protection systems. With GPS-synchronized current interruption, advanced self-testing, and flexible communication options, it delivers unmatched performance for infrastructure teams managing critical assets in oil, gas, water, and electrical sectors.

Key Features:

24/7 Rectifier Monitoring: Continuously track voltage, current, and potential measurements across multiple channels
GPS-Synchronized Interruption: Control current interruption at individual sites or system-wide with precise GPS timing
Fail-Safe Dual Relay System: Ensures reliable current interruption with mechanical bypass and optional mercury-free solid-state relays
Advanced Self-Testing: Automatically verifies channel calibration with every reading for consistent accuracy
Flexible Programming: Configure locally via onboard LCD or remotely via Elecsys Connect web interface
Surge Protection: Tested to withstand 4000V/3500A surges per IEC 61000-4-5 standards

Applications:

Additional analog channels to monitor up to 4 pipeline current measurements
24/7/365 continuous CP rectifier monitoring
Individual site, group, or system-wide GPS synchronized current interruption control
Pulse-counter/accumulator for meter-reading applications
Digital, dry contact status “tamper alarm” monitoring

View Datasheet

ISM-4 Industrial Status Monitor

Remote monitoring for multiple measurements.

Maximize efficiency and reduce field visits with the Lindsay ISM-4, a rugged, multi-channel industrial status monitor built for real-time remote monitoring in oil, gas, water, and electrical applications. Designed for versatility, the ISM-4 supports four independently configurable channels to measure DC voltage and current across a wide range of field assets.

Key Features:

Four-channel flexibility: Monitor multiple voltage and current points simultaneously
Remote access via Elecsys Connect: View and manage data from any web-enabled device—smartphone, tablet, or desktop
Power options for any environment: Operates on external AC/DC power or a 5-year lithium battery for off-grid locations
Modbus SCADA compatibility: Seamlessly integrates with legacy systems
Rugged and reliable: Built in the USA to ISO 9001 standards with a NEMA 4X enclosure for harsh environments

Applications:

Remote rectifier monitoring
Thermoelectric generator (TEG) and solar impressed current systems
Bond current and polarity measurements
Pipe-to-soil voltage monitoring

View Datasheet

Watchdog Ranger

Affordable, reliable, and built for the field.

The Watchdog Ranger™ is a rugged, low-cost remote monitoring solution for impressed current cathodic protection systems. Designed to help infrastructure teams monitor rectifier performance across multiple sites, it ensures compliance, prevents corrosion, and reduces costly field visits.

Key Features:

Remote Compliance Monitoring: Track rectifier voltage and current to meet regulatory standards
Alarm Notifications: Get alerts for rectifier failure to prevent downtime and safety risks
Flexible Power Options: Operates on AC, DC, or internal lithium battery
Rugged Design: Built to withstand harsh environments with lightning and surge-resistant circuitry
Easy Installation: Pre-configured with mounting tabs and a 7’ color-coded cable
Web-Based Access: 24/7/365 visibility via Elecsys Connect on any smartphone, tablet, or computer

Applications:

Impressed current cathodic protection
Storage tanks
Passive galvanic cathodic protection
Production fields
Water utilities

View Datasheet

Watchdog II

16-channel monitor with interruption.

Ensure pipeline integrity and reduce field visits with the Watchdog II Mesh Remote Monitoring Unit (RMU) by Lindsay. Designed for critical infrastructure applications, this rugged, field-proven system delivers real-time monitoring and control of rectifiers—without the need for manual site checks.

Key Features:

Multi-channel monitoring: Supports multiple voltage and current inputs for comprehensive cathodic protection data
Smart mesh networking: Enables reliable communication across multiple assets within line of sight
Instant-off and pipe-to-soil readings: Built-in capabilities for accurate corrosion protection assessment
Flexible power options: Operates on AC or DC power with battery backup for uninterrupted performance
SCADA integration: Compatible with existing supervisory control systems for seamless data flow