HydroC - Model Plus -CH4 Sensor

Climate studies, methane hydrate studies, limnology, fresh water control, aquaculture/fish farming.

Dissolved CH₄ molecules diffuse through a specialized thin film 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 from calibration coefficients stored in firmware and data from additional sensors within the gas circuit.

• High accurancy and low detection limit (background concentration)
  
• Large measuring range
• Optimal long-term stability
  
• Very robust, can be used in water depths up to 3,000 meters
  
• User-friendly
  
• Plug n` Play principle, all required cables, connectors and software are included

• Detector : Tunable Diode Laser Absorption Spectroscopy (TDLAS)
• Measuring range : 0- 40,000 µatm
• Detection Limit : < 1 µatm
• Weight : 5.5 kg in water, 12.5 kg in air
• Dimensions : 136 x 490 mm
• Operational Depth : 3,000 m
• Temperature range : Ranges include: -2°C to +35°C; -2°C to +30°C; -2°C to +20°C; -2°C to +8°C
• Resolution : < 0.01 µatm
• Accuracy : ±2 µatm or ±3 % whichever is greater
• Connector : SUBCONN MCBH-M Titanium 8-pin (other connectors on request)
• Supply Voltage : 12 V - 30 V (for all +2°C to +35°C options)
• Power Consumption : Approx. 690 mA @ 12 V
• (+ approx. 8 W with SBE-5T)
• Data interface : RS-232C and RS-485
• Data format ASCII NMEA-0183
• Software : Windows ® software DETECT™ incl. real time data visualization, setting of sensor parameters, download data from internal data logger
• Sleep mode function