SAMI-CO2

	SAMI-CO₂ The SAMI-CO₂ measures the partial pressure of CO₂ in water (pCO₂) from 150-700 μatm (other ranges available by request) using a highly precise and stable colorimetric reagent method. It is designed to provide researchers with valuable in-situ time series data at depths up to 600 m. The SAMI-CO₂ can run for over a year taking hourly measurements. The SAMI-CO₂ can support up to 3 external instruments such as PAR, dissolved oxygen, chlorophyll fluorometer, or CTD and can support inductive modems or external loggers if required.
SAMI-CO₂ Performance Parameters
Typical calibration range*	150-700 μatm
Deployment duration	~10,000 measurements
Response time	~5 minutes
Accuracy**	+/- 3 ppm
Precision	<1 μatm
Long term drift	<1 μatm units over 6 months
Thermistor accuracy, precision	0.1° C, +/- 0.01º C
Dimensions (housing length, diameter)	55 cm, 15.2 cm
Weight in air/seawater	7.6 kg / 1.1 kg
* Extended ranges possible, please contact us with questions. **Based on lab calibration to NIST traceable NDIR