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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
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  • 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.

 

 

Sea-Bird Scientific HydroCAT-EP Brochure
Sea-Bird Scientific HydroCAT-EP Manual
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)
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