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The Online Electronics EMRx Onshore 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 unit provides three colour coded (red, blue and white) 20x LED bargraphs which can be individually configured in the field via Bluetooth using OEL’s EMRx Applications to display received signal at any fixed frequency between 10Hz and 30Hz. The EMRx Applications can allow advanced receiver functionality such as tracking six colour coded frequencies, an audio output and the ability to mark a point of interest on the signal chart along with any relevant notes that can be reviewed at a later date.

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 heavy walled 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) allows use in high noise environments with more reliable signal acquisition
  • Intuitive and easy to use - one control on the unit carries out all functions
  • The EMRx Onshore shares common features and functionality with the EMRx Subsea ensuring a smooth and simple transition between the two units


Typical Lifetime used continuously with Bluetooth: 30 hours
Typical Lifetime used continuously without Bluetooth: 100 hours
Battery Type: 6x 1.5V, Alkaline, AA Cells
Frequency Range: 10Hz to 30Hz
Operating Temperature Range: -20°C to +50°C (-4°F to 122°F)
Length: 369mm (14.5”)
Width: 92mm (3.6”)
Weight: 1.8kg (4.0lbs)
Housing Material: Polycarbonate
Endcap Material: Acetal
Bumper Material: EPDM Rubber