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The Online Electronics EMRx Subsea receiver is a robust, state of the art,multi-frequency, electromagnetic (EM) receiver used for locating lost or stalled pigs and tracking pigs fitted with any EM pig transmitters

It can also be used to confirm a pig has left or arrived at a particular location and for general monitoring of pig movements. The EMRx Subsea unit provides three colour coded (red, white and blue) 20x LED bargraphs which can be individually configured in the field via OEL’s EMRx Applications to display received signal at any frequency between 10Hz and 30Hz. The unit may be powered from internal batteries or from an external 24VDC supply. Handles suitable for use by divers or fishtail type handles suitable for ROV manipulators can be provided. 

Key Benefits

  • Has the potential to greatly reduce downtime, and therefore costs, by facilitating the process of locating a stalled pig or confirming if a pig has left the launcher or been successfully received
  • The enhanced sensitivity permits the location of transmitters even within very heavywalled receivers/launchers, pipeline bundles or Pipe-in-Pipe
  • Detection through pipeline walls in excess of 40mm is possible dependent on transmitter settings and environmental factors
  • Multi-frequency feature allows user to identify and locate individual pigs.
  • Digital Signal Processing (DSP) provides enhanced functionality, signal-to noise ratio and frequency selectivity
  • Intuitive and easy to use - one control on the unit carries out all functions
  • The EMRx Subsea shares common features and functionality with the EMRx Onshore ensuring a smooth and simple transition between the two units


Lifetime used continuously: 72 hours
Battery Type: 6x 1.5V, Alkaline, AA cells
External Supply: 15VDC to 28VDC
Subsea Connector: BURTON 5506-1508 FCR
Communication Protocol: RS485
Operating Temperature: +0°C to +40°C (32°F to 104°F)
Maximum Operating Depth: 3000m (9843ft)
Housing Material: Acrylic
Endcap Material: Acetal

Weights and Dimensions (excluding handle)

Length: 365mm (14.4”)
Width: 148mm (5.8”)
Height: 148mm (5.8”)
Weight in air: 4.5kg (9.9lbs)