Watchdog Scout Remote Rectifier Monitor by Elecsys

Web-based Remote Monitoring System with Interruption Capabilities


The Watchdog Scout combines the installation simplicity of our VIP system with the advanced, web-based interruption capabilities of the groundbreaking Watchdog Mesh system. The Scout is designed to withstand all the challenges encountered in CP rectifier monitoring applications. The compact sized, lockable NEMA4x enclosure provides a secure, protective environment for the state of the art electronics. Advanced, self-testing circuitry automatically verifies the channel calibration to a known, stable voltage with every reading. This assures the most accurate reading available, every time!

The Scout has been rigorously tested to withstand voltage surges up to 7500V at 3500A using conducted voltage testing per IEC 61000-4-5 specifications. This test method most closely correlates with the lightning and input power surges encountered by remote monitor equipment in the field.

The powerful Pipeline Watchdog web interface provides instant visibility to the status of your field assets, and simplifies multiple rectifier GPS-synchronized interruption, group polling, and automatic compliance report generation.

  • Designed for reliability in harsh, field environments
  • Two way cellular or satellite communications
  • Setup and reconfigure units from your computer
  • Import data into compliance reporting software
  • Over the web gps synchronized interruption capability
  • Modbus Enabled


  • CP rectifier monitoring applications
  • Initiate/schedule group interruption cycles
  • Digital, dry-contact status monitoring with alarming
  • Pulse-counter/accumulator for meter-reading applications
  • LCD User Interface


  • Surge protection tested up to 7500V at 3500A (conducted voltage test per IEC 61000-4-5 specifications)
  • Alarm and return to normal notifications via e-mail and/or text message
  • 4 analog measurement channels, 2 dry-contact digital input channels (one can be used as a pulse counter/accumulator), AC mains on/off detection channel (probe included)
  • New, “Automatic Calibration Verification” circuitry assures precision measurement accuracy every time.
  • GPS synchronized interruption with current sensing 
  • Reconfigure units from the Watchdog user interface
  • 2-way cellular or satellite telemetry options for reliable communication anywhere in the world on demand
  • Easy to use web interface
  • Firmware reprogrammable over the air (cellular)
  • Modbus interface for SCADA systems
  • AC mains on/off detection


 Communications  Digital cellular
 Satellite (Inmarsat and Thuraya satellite networks)
 Modbus (RS232) RTU slave connection for use w/customer supplied SCADA data  radio
 Size  NEMA4x Enclosure: 8” (20.3 cm) X 10” (25.4 cm) X 4” (10.2 cm)
 Temperature: -40°C to +85°C (-20o C to +70o C in battery backup power mode)
 Humidity: 0—100% non-condensing
 Enclosure rating: NEMA 4X polycarbonate
 Power Options  8-35 Vdc or 10-25 Vac for “Always On” operation; or primary battery power
 (interruption only available using always on external power)
 Input Connections  4 analog measurement channels
 2 digital dry=contact channels (1 can be used as a pulse counter)
 1 AC detection probe input
 Outputs  2 relay control outputs
 GPS synchronized
 Syncs with all popular portable interrupters
 Relay options: 100 Amp mercury relay
                         Solid state dual relay system w/mercury bypass relay
                         Mercury-free solid state/mechanical bypass relay system
 Rectifier voltage input: Range = +/-200V, measurement accuracy better than   +/-100mV
 Rectifier current input: Range = +/-100mV, measurement accuracy better than    +/-100uV
 Potential input: Range = +/-10V, measurement accuracy better than +/-100uV