HomeISOTEST® actIndustrie SolutionsStationary Inspection of Flexible Pipe Systems

Stationary Inspection of Flexible Pipe Systems – ISOTEST® act Industry Solution

Plastic coatings of flexible pipe systems for local and district heating networks as well as for fuel and gas stations can be reliably tested. Even the smallest cracks or pores can online be detected and displayed during production.

In combination with the capacitive grounding this special high voltage test method allows a fully automated pipe testing without direct contact to the conductive pipe interior or the bare pipe end. With stationary holiday detectors ISOETST® act even damp pipes can reliably and material-friendly be tested for pores.


The in-plant high voltage pulse crest meter ISOTEST® HV conti is the ideal complement for the ISOTEST® act series. The compact and robust measuring device allows a precise measuring of the actually applied test voltage. In this way the prescribed values can precisely be recorded and documented.


In combination with specific testing stations even continuously produced pipes can be tested. We shall be pleased to advise you on the configuration of your testing system!

Our recommendation

In-plant Holiday Detector ISOTEST® act 8.0 / 35

  • test voltage 0.5 - 8.0 kV, 0.5 kV steps (ISOTEST® act 8.0)
    or 7.5 - 35 kV, 2.5 kV steps (ISOTEST® act 35)
  • high-voltage pulse technology
  • no static charging
  • testing of dirty, damp and even slightly conductive surfaces
  • up to 6 test channels – synchronisation of several devices (master / slave mode)
  • “Phantom-Grounding” – no direct grounding necessary
  • external switch-on / switch-off of the test voltage
  • adjustable sensitivity and filter functions

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In-plant High Voltage Pulse Crest Meter ISOTEST® HV conti

Permanent and external revision of high voltage testing with ISOTEST® act in-plant holiday detector systems.


  • testing of in-plant and stationary holiday detector systems ISOTEST® act according to general rules and standards
  • suitable for continuous operation (three shifts)
  • interfaces for the external documentation of test voltages and operating states
  • highest interference resistance in the measurement analysis thanks to state-of-the-art optical fibre technology

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