Features
- Measurement of pCO2 in both air and surface water simultaneously
- Patented tubular interface provides unmatched biofouling resistance
- High accuracy, long-term stability
- Easy integration into buoy and shipboard systems
- Real-time data output; no post-processing
- Internal data logger and controller with 2GB flash memory
pCO2 Sensor Applications
- Surface CO2 flux studies
- Long-term ocean pCO2 monitoring
- Open ocean studies
- Coastal zone CO2 fluxes
CO2-Pro™ Atmosphere pCO2 Sensor
The CO2-Pro™ Atmosphere instrument measures the partial pressure of CO2 gas in both surface water and air for accurate determination of CO2 flux. An internal zeroing feature provides drift correction for stable and accurate long-term measurements.
Designed for use on buoys, the rugged unit is comprised of a CO2-Pro™ that mounts under the buoy for water measurement connected to a NEMA box that is used to take in air from above the buoy. Alternating measurements of pCO2 in air and water provide accurate data for reliable surface flux calculations. The instrument is well-suited for integration into shipboard flow-through systems.
Sensors are calibrated using WMO traceable standards. Measurement of gas pressure and humidity along with stabilized detector temperature provides accuracy unparalleled by other small submersible pCO2 sensors.
The CO2-Pro™ Atmosphere was chosen as the air-sea CO2 flux sensor for the Coastal and Global Scale Nodes component of the US OOI, Ocean Observatories Initiative.
For more details on calculating Air-Sea Carbon Fluxes click here: Measurement of Air-Sea Carbon Fluxes
PRODUCT SPECIFICATIONS
| Sensor Performance | |
|---|---|
| Accuracy | ±0.5% |
| Resolution | 0.01 ppm |
| Zero drift | automatic zero compensation |
| Equilibration time (t63) |
water: 2.5 min air: 5 sec |
| Standard range (alternate ranges available) |
0-600 ppm 0 - 1000 ppm 0 - 2000 ppm |
| Physical | |
|---|---|
| CO2 -Pro Submersible: | |
| Length | 33 cm (13 in) |
| Diameter | 19 cm (7.5 in) |
| Weight | Air: 6.6 kg (14.5 lbs) Water: -0.5 kg (-1.1 lbs) |
| Housing | Acetal Plastic |
| Depth |
5 m |
| Water Temperature | 0º to 30º C (Standard) -2º to 20º C (Arctic) 15º to 40º C (Tropical) |
| Air-side NEMA Enclosure Size: | 34.5 x 21.5 x 12.3 cm |
| Electrical | |
|---|---|
| Input voltage | 10-18 VDC |
| Power consumption | 7.1 W (@12VDC), 12 W during warmup, includes SBE 3K pump |
| Data output | RS-232, ASCII format, 0-5 V or 4-20 mA |
| Sample rate | 1 second (variable rate with logger/controller) |
OPTIONAL ACCESSORIES
External Battery Pack
76, 134, or 247 Amp-hour capacity
Seabird Water Pump with Cable
5P (Plastic) or 5T (Titanium)