PCMx Operation Manual
© 2021 Radiodetection Ltd 5
The Tx-25 PCM transmitter has internal Li-ion
batteries that allow it to operate in the field
independently of external power sources.
The transmitters have three operating modes that
enable both distribution and transmission pipeline
systems to be effectively mapped.
The Tx-25 PCM transmitter also has a 1A 8kHz
mode used for location of pipelines only.
Connecting the transmitters is straightforward, and
the current reading LCD and voltage indicating LEDs
help the operator to choose the best settings for
each pipeline application.
2.5 PCMx Locator
PCMx locator is used to locate the pipeline, even in
heavily congested areas. The locator provides the
operator with a measurement of depth, current and
direction of the low frequency signals applied by the
system’s transmitter.
There is a magnetometer foot for PCM work, which
can be removed for locator operation.
The locator takes the required voltage and current
readings, displaying the calculated 4Hz current
measurement. The results can be stored internally
and transferred by Bluetooth® to the mobile app to
provide live graphical presentation of the survey on a
mobile phone or tablet.
2.6 Mobile and tablet apps
App for Android is available for live graphing,
mapping and uploading of the survey results,
which can then be sent back to the office for
evaluation.
The display provides a live graph of the dB current
and dB voltage along the line and derived fault
severity rating.
A live map will be available of the survey.
2.7 eCert and Self-Test
The PCMx locator is safety equipment and checked
regularly. eCert rigorously tests the locating circuitry and
magnetometer foot and supplies a Radiodetection
Calibration Certificate when a positive test result has been
obtained.
PCMx locators incorporate an Enhanced Self-Test
feature, which checks display, power, accuracy and
performance of both locator and magnetometer
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