SAMI-pH - Ocean pH Sensor
- Measures pHT (total hydrogen scale) in the marine pH range of 7-9
- Uses a highly accurate colorimetric reagent method
- System does not suffer from the drift that plagues most electrode based pH probes
- Provides researchers with valuable in-situ time series data at depths up to 600 meters
- 234-day deployment capability (hourly measurements, 25C)
- Extra battery package allows the SAMI-pH to run for more than a year
- Can support up to 3 external instruments (e.g., PAR, dissolved oxygen, CTD)
- Supports inductive modems or external loggers via RS-232
| pH range | 7-9 | |
| Salinity range* | 25-40 | |
| Response time | 3 minutes | |
| Accuracy (based on CRM intercomparison) | +/- 0.003 pH units | |
| Precision | <0.001 pH units | |
| Long term drift | <0.001 pH units over 6 months | |
| Thermistor accuracy, precision | 0.1° C, +/- 0.01º C | |
| Dimensions (length, diameter) | 55 cm, 15.2 cm | |
| Weight in air/seawater | 7.6 kg / 1.1 kg | |
| * Extended range possible, please contact us with questions. | ||