Model PCMx Pipeline Current Mapper by Radiodetection

Locates and Effectively Measures Pipeline Coating Faults



Radiodetection’s PCMx system enables corrosion and Cathodic Protection System (CPS) professionals to evaluate the condition and effectiveness of pipeline coatings.  Users can locate faults and holidays in the coatings, and identify shorts caused by contact to other structures.

PCMx enables pipeline managers to identify and prioritise preventative maintenance on pipelines; extending asset life by identifying possible sources of corrosion at an early stage. 

The system can be used to conduct ACCA and ACVG surveys in accordance with ANSI/NACE SP0502-2010 ‘Standard Practice for Pipeline External Corrosion Direct Assessment Methodology’. These surveys, which may be conducted separately or simultaneously, can be used to locate and pinpoint coating defects or identify shorts made by contacts with other structures. 

Removal of the detachable foot leaves a fully-featured RD8100PDLG pipe and cable locator. Depth of cover and GPS positional data is also captured. 

  • Faster results
    A mobile (Android) companion app allows users to chart results in the field improving on-site analysis. Walk back and walk forward features gets you to your next measurement quicker. An additional PC app offers improved charting tools.

  • One second mapping measurements
    With each mapping measurement now only taking one second, survey times are reduced. Integrated GPS ensures each measurement is captured with positional data.

  • Two surveys in one pass of the pipeline
    Conduct both ACCA and ACVG surveys with one pass of the pipeline. PCMx allows you to collect both measurement types simultaneously, reducing survey time and getting results faster.

  • More information at your fingertips
    Radiodetection’s Peak+ technology guides you to your target pipeline quicker while the compass display ensures correct alignment. Simultaneous depth and current measurements give you confidence you are following the correct line.

  • Improved ergonomics
    With a balanced design and lighter weight, (2.2kg, 4.8lb), the receiver is easier to carry over long distances. The convenience of a Li-Ion rechargeable battery pack ensures extended runtime. 


One second mapping measurements combined with simultaneous ACCA and ACVG data gathering makes surveying faster.

Tx-25PCM, the 1 Amp signal output transmitter offering rechargeable battery flexibility. PCMx mobile app improves on-site analysis, allowing you to review results as you go.


Simultaneous survey option - User selects simultaneous or separate ACVG and ACCA surveys.

Improved ergonomics - Receiver weighs just 4.9lbs (2.2kg), easing full-day usage.

Removable foot - Leaves a fully-featured, premium RD8100 pipe & cable locator.

One second mapping measurements - Saves time and money.

Integrated GPS - Automatic capture of GPS co-ordinates on survey logs.

Depth of cover - Pipeline depth recorded alongside current, voltage and GPS data.

Companion Android App - Allows graphing on the move, includes walk-back and walk-forward.

PC App - Offers improved charting tools.

Peak+ - Guidance arrows for quick location, Null arrows to check for distortion.

New Tx-25 - Smaller, lighter transmitter with rechargeable battery, ideal for distribution networks.

Tx-150 - Transmits 19mile+ (30km+) signals for long-range transmission pipelines.

Enhanced self-test - Checks calibration of receiver, giving on-site user confidence.

eCert - Verify and certify the calibration of your PCMx receiver using PCM Manager PC software.

Software and Apps - Mobile App for Android cell phone or tablet (data transfer via Bluetooth) PC App for PC (data transfer via USB) 
PCM+ Receiver

Mapping Modes

ELF Extra Low Frequency, 4 Hz + 128 Hz / 98 Hz

LF Low Frequency, 640 Hz / 512 Hz

8 kHz standard locate frequency from battery powered Radiodetection transmitters.

Locate Modes

Detects 50 Hz / 60 Hz from power cables.

CPS detects 100 Hz / 120 Hz ripple from CP transformer rectifier.

8 kHz standard locate frequency from battery powered Radiodetection transmitters.

Dynamic Range

140 dB


120 dB/Hz

Range from Tx

30 km (19 miles)

Current Accuracy

± 2.5%

Locate Accuracy

± 2.5% of depth


Used to pinpoint target line. n Simultaneous peak & null response.
Gain control via keypad. auto & manual.


3.3 kg (7.2 lbs)


Two D cells (alkaline or NiMH)




CE, Bluetooth® compliant

PCM-Tx Transmitter

Frequency Select

Current Direction (CD) provides a positive identification of the outgoing current and provides a method of locating pipe faults using the A-Frame. Three-position switch selects the following mapping frequencies:

ELF: Maximum range for current logging, 4 Hz + 98 Hz / 128 Hz

ELCD: Standard current logging with CD (4 Hz + 8 Hz) CD + 98 Hz /128 Hz

LFCD: Improved depth, position and current logging accuracy with respect to ELCD. Shorter range operation (4 Hz + 8 Hz) CD + 512 Hz / 640 Hz

Current Select

Six-position (current select) rotary switch selects the following 4 Hz current settings: 100 mA, 300 mA, 600 mA, 1A, 2A, 3A. When the PCM Transmitter is in operation, the selected current will remain at a constant level unless the input power supply limit is reached.

Case Construction

High-impact engineered plastics


15.2 kg (34 lbs)


47 x 37 x 19 cm (18.5" x 14.5" x 7.5")


NEMA 3R and IP55 with lid open, NEMA 6 and IP67 with lid closed.






CE, Bluetooth® compliant

A-Frame PCM Attachment


Detects sheath faults on buried pipes and cables.


PCM+ connection cable


1.55 kg (3.4 lbs)


8.5 x 59 x 4.5 cm (33" x 39.3" x 1.7")