Skip to main content
No longer sold

CH₄ FT - Methane sensor - Accurate long-term

The CONTROS HydroC CH₄ is a unique surface methane partial pressure sensor designed for flow through applications like pumped stationary systems (e.g. monitoring stations) or ship based underway systems (e.g. FerryBox). Fields of application include: Climate studies, methane hydrate studies, limnology, fresh water control, aquaculture / fish farming.

All sensors are individually calibrated using a water tank, which simulates the expected water temperatures and gas partial pressures. A proven reference system is used to verify the CH₄ partial pressures in the calibration tank. This process ensures that the CONTROS HydroC CH₄ sensors achieves excellent short and long term accuracy.

Operating principle

Water is pumped through the flow head of the CONTROS HydroC CH₄ sensor. Dissolved gases diffuse through a custom made thin film composite membrane into the internal gas circuit leading to a detector chamber, where the CH₄ concentration is determined by means of Tunable Diode Laser Absorption Spectroscopy (TDLAS).

Concentration dependent laser light intensities are converted into the output signal taking additional sensors within the gas circuit into account.


  • High accuracy and low detection limit of background concentration
  • Large measuring range
  • Optimal long-term stability
  • Ideal methane selectivity
  • Non-consuming CH₄ measurement
  • Very robust
  • User-friendly 'Plug & Play' principle; all required cables, connectors and software are included


  • Data logger
  • Easy integration into FerryBox applications
  • Analogue output: 0 V - 5 V

Services and support

  • 24/7 Technical support

    Our 24/7 technical support team is there to help at any time, day or night, wherever your vessel is.

    Contact us:

  • Spares

    We understand the importance of having the right parts, available in the right place, at the right time.

  • Training

    Ensure that your crew is properly and thoroughly trained. This will reduce operational risk, downtime and maximise return on asset investment.