Sea-Bird Scientific HydroCAT-EP
Long-term Deployment Water Quality Sonde
The newest member of the HydroCAT family of water quality Sondes can also measure pH, turbidity and chlorophyll. By plumbing the pH sensor inline with conductivity, temperature and optical dissolved oxygen the HydroCAT-EP is capable of deployments up to three months without requiring data processing to correct for drift.
- Unattended
- Temperature, Pressure, Dissolved Oxygen, Conductivity, pH, Turbidity and Chlorophyll
- Designed specifically for long-term deployments of up to three months
- SDI-12, RS232
- Low total cost of ownership: Annual calibrations, a five year warranty, and deployment durations of three months mean less cost to service and maintain over the life of the instrument.
- Data Reliability: With the exception of pH all sensors are factory calibrated in a temperature-controlled bath that operates at 2 -4 times the accuracy of the instrument
- Easy to service: The pH sensor is a smart sensor that can be hot swapped in the field minimizing the need for in field service and calibration.
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| Conductivity | |
| Range | 0 ... 70 mS/cm (0- 70,000 µS/cm) |
| Accuracy | ± 0.003 mS/cm (3 µS/cm) |
| Typical Stability | 0.003 mS/cm (3 µS/cm) per month |
| Resolution | 0.0001 mS/cm (0.1 µS/cm) |
| Temperature | |
| Range | -5 ... 45°C |
| Accuracy | ± 0.002°C/± 0.01°C (over 35°C) |
| Typical Stability | 0.0002°C per month |
| Resolution | 0.0001°C |
| Pressure | |
| Range | 0 ... 20 m/ 0 ... 100 m/ 0 ... 350 m |
| Accuracy | ± 0.1% of full scale range |
| Typical Stability | 0.05% of full scale range |
| Resolution | 0.002% of full scale range |
| Optical Dissolved Oxygen | |
| Range | 200% of surface saturation in all natural waters |
| Accuracy | ± 0.1 mg/L (3 µmol/kg) or ± 2% whichever is greater |
| Typical Stability | < 0.03 mg/L (1 µmol/kg)/ 100,000 samples (20°C) |
| Resolution | 0.007 mg/L (0.2 µmol/kg) |
| ph | |
| Range | 0 ... 14 pH |
| Accuracy | ± 0.1 pH |
| Typical Stability | 0.1 pH over 90 days |
| Resolution | 0.01 pH |
| Turbidity | |
| Range | 0 ... 3,000 NTU |
| Accuracy | ± 1% |
| Resolution | 0.06 ... 0.17 based on range |
| Chlorophyll | |
| Range | 0 ... 400 µg/L |
| Accuracy | ± 3% |
| Resolution | 0.007 ... 0.037 based on range |
| Electrical | |
| Clock Stability | 5 sec/month |
| External Power | (optional) 0.25 Amps at 9 ... 24 VDC |
| Internal Power | 7.8 AMP battery pack (AA Lithium) |
| Communication | SDI 12/RS232 |
| Memory | 16 MB non-vlatile FLASH 215,000 samples |
| Service | Annual service and factory calibration |
| Warranty | 5 years (some exclusions see full Warranty Statement ) |
| Housing | 350 m plastic housing |
| Weight | 4.05 kg (9.0 lbs) in air |
| Length | 722 mm (28.45 in) |
| Diameter | 139.5 mm (5.49 in) |