High precision and long-term stable airborne CH4 sensor

CONTROS HydroC ® CH4 FT is a unique navigation type sensor for measuring CH4 partial pressure, mainly used in station building systems (such as shore based monitoring stations) or ship mounted navigation systems (such as Ferrybox). The application areas include climate research, CH4 hydrate research, lake and marsh research, freshwater utilization, aquaculture/fishery farming, etc.

Using a validated reference system to verify the CH4 partial pressure in the calibration tank, this process is carried out by * * CONTROS HydroC ® The CH4 FT sensor can achieve excellent short-term and long-term measurement accuracy.

working principle

Seawater flows through the flow head of the CONTROS HydroC CH4 FT through a pump, and the dissolved CH4 molecules in the water diffuse into the internal gas circuit through a novel TOUGH permeable membrane, entering the detector chamber. At this time, the CH4 concentration is measured using tunable diode laser absorption spectroscopy (TDLAS).

The concentration of CH4 is closely related to the laser absorption intensity. After calibration coefficients stored inside the instrument and calculation correction of additional sensor data in the gas circuit, the absorption intensity is converted into a measured output value.

High precision and stability

Based on the advantage of narrow spectral lines in tuned diode laser detectors, the CONTROS HydroC CH4 FT sensor has high accuracy and can accurately detect the content of CH4 molecules in water. Its dynamic range of background partial pressure can reach 40 μ atm. Each detector undergoes precise calibration and strict quality inspection before integration, and is independently calibrated in the calibration slot to ensure accurate calibration results. Each measurement will tune the laser detector based on the CH4 absorption wavelength and non absorption wavelength to compensate for the effects of potential drift and achieve long-term stability of the sensor.

Product Features

• Durable and sturdy TOUCH permeable membrane

• Ideal CH4 detection sensitivity, high detection accuracy, and low detection limit

• A large number of journeys

• Optimized long-term stability

• Ideal CH4 selectivity

• Non consumptive CH4 measurement, suitable for long-term stable observation

• Plug and play, only requires cables, connectors, and software

• Quick film change design