The instrument allows measurement of water dissolved carbon dioxide and of the related water parameters.

applications:

• in vulcanology to understand the dynamics of volcanoes and for a global evaluation of the hazard connected with volcanic activity;
• monitoring of geothermal areas;

This is a completely automatic station which performs the measurements cycle, acquires and stores the data on a non-volatile memory. By means of a telemetry system the data can be transferred to a Reception Center up to 20 miles away, or can be anywhere on the planet by using our innovative internet based telemetry systems.

The system is based on the principle of a dynamic equilibrium between water and the air as the host gas.

The amount of CO₂ in the circulating gas phase is measured by the IR spectrometer, and it increases with time until it reaches the value corresponding to that at complete equilibrium with CO₂ in water: PCO₂(gas) PCO₂(water).

The concentration of CO₂ is automatically measured in the air inside the chamber both before and after each re-equilibration cycle. The values of CO₂ reached at the end of the equilibration time (about 20 min) represent the partial pressures of the CO₂ in the natural system being studied at the measured water temperature

The soil flux station is able to measure:

• Dissolved carbon dioxide concetration by DRAGER IRCO₂ detector.
• Water pH
• Water conductivity
• Depth

Other parameters are available upon request.

DRAGER Polytron IR CO₂

Working principles: Double beam IR Detector with solid state sensor compensated in temperature, without moving parts.

• Full scale: Range 2000 ppm ~ 100% configurable by the operator.
• Accuracy 3% of reading for > 350 ppm
• Signal noise: 1% of reading pk-pk noise Out 4~20 mA linearized.
• IP63 Case with anti spray protection IP65.
• Operating temperature : between -20 and +65 °C.
• Air relative humidity 0~95%.

Water Parameters

Multiparameter Water Quality Sonde.

• Conductivity: 0 to 100 mS/cm (accuracy: ±0.5% of reading + 0.001 mS/c, resolution: 0.0001 units).
• pH: 0 to 14 pH units (accuracy: ±0.2 pH units , resolution: 0.01 pH units)
• Temperature: –5 to 50 °C (accuracy: ±0.1 °C, resolution 0.01 °C).
• Depth: 0 - 10 m, 0 - 25 m, 0 - 100 m, 0 - 200m

Other sensors available upon request.