1. Product Advantages

• High Accuracy & Low Detection Limit: High accuracy with low detection limit capable of measuring background concentrations.

• Large Measuring Range: Features a large dynamic range covering background partial pressures up to 40 matm.

• Optimal Long-Term Stability: High stability over time as the detector tunes the laser to CH4 absorbing and non-absorbing wavelengths for each measurement, compensating for potential drift influences.

• Ideal Methane Selectivity: Tunable Diode Laser Detectors offer high accuracy and ideal selectivity for methane molecules due to their narrow line-width.

• Non-Consuming Measurement: Non-consuming CH4 measurement principle.

• Very Robust: Built for water depths up to 3000 meters.

• User-Friendly: Operates on a Plug & Play principle with all required cables, connectors, and software included.

2. Quality Detection

• QA Lab Quality Check: All detectors are subject to an individual calibration and an in-depth quality check in the QA lab before integration into the sensors.

• Calibration Verification: The quality of calibration is verified individually in calibration tanks.

3. Product Parameters

• Detection Principle: Tunable Diode Laser Absorption Spectroscopy (TDLAS) via custom thin-film membrane.

• Depth Rating: Up to 3000 meters.

• Dynamic Range: Covering background partial pressures up to 40 matm.

• Analogue Output: 0 V to 5 V.

• Accessories & Options:

  • Internal data logger

  • External CONTROS HydroB battery packs

  • External pump (SBE-5T or SBE-5M)

  • ROV and AUV installation packages

  • Profiling and mooring frames

  • Antifouling head for high biofouling conditions

4. Product Models

• CONTROS HydroC CH4 Sensor

5. Product Purpose

• Designed for in-situ and online measurements of CH4 partial pressure (p CH4) in subsea and underwater environments.

6. Product Application

• Background Monitoring: Monitoring background CH4 concentrations in aquatic environments.

• Long-Term Deployments: Extended unattended long-term subsea deployments using flexible power management features and battery packs.

• Underwater Platforms: Integration into ROV, AUV, profiling frames, and mooring systems.