Sunburst Sensors | The SAMI

The SAMI ²

Sunburst Sensors’ next generation of pCO₂ and pH sensors are now available. With improved reliability, durability and user-friendliness, the SAMI² supports up to three additional sensors and can be deployed up to a year at depths of up to 500 meters.

General specifications:
• Sensor type: reagent based colorimetry
• Thermistor: accuracy 0.1^oC, precision ± 0.01^o
• Weight in air / seawater: 7.3 kg / 1 kg
• Operating range: -2^o– 30^o C, 0-500 m depth
• Dimensions: 58 cm x 15 cm diameter
• User friendly client software
• Optional mooring cage
• Shipboard configurations also available

SAMI² - CO₂ • Measures: partial pressure of CO₂ in water (pCO₂) • pCO² range: 150 – 700 ppm (other ranges avail.) • Duration: ~17,000 measurements • Response time: ~5 minutes • Precision: < 1 ppm • Accuracy: ± 3 ppm based on lab calibration* • Long-term drift: < 1 ppm over 6 months *Based on NIST-traceable calibrated NDIR	SAMI² - pH • Seawater pH_T (pH - total hydrogen ion scale) • pH range: 7-9 • Salinity range: 30 - 36 • Duration: ~10,000 measurements • Response time: ~3 minutes • Precision: < 0.001 pH units • Accuracy: ± 0.003 pH units (CRM* intercomparison) • Long-term drift: < 0.001pH units over 6 months *Certified pH reference material from Andrew Dickson (UCSD)