Onset W-CTD-03 CTD Sensor (0~100.000 µS/cm; -20°~50°C)

Conductivity Measurements:

Measurement Range:

Electrical conductivity and specific conductance: 0 to 100,000 µS/cm

Salinity using PSS-78: 2 to 42 PSU

Total Dissolved Solids (TDS): 0 to 100,000 mg/L

Calibrated Range: Electrical conductivity: 50 to 80,000 µS/cm | 5° to 35°C (41° to 95°F)

Accuracy:

Conductivity: +/-2% or 15 µS/cm whichever is greater

Salinity: +/-2% of reading or 0.1 PSU, whichever is greater

Resolution:

Conductivity: 0.1 µS/cm from 0 to 1,000 µS/cm; 1 µS/cm from 1,000 to 10,000 µS/cm

10 µS/cm from 10,000 to 100,000 µS/cm

TDS: 0.1 mg/L; Salinity: 0.01 PSU

Response Time: 1 second to 90% at a stable temperature

Absolute Pressure and Water Level Measurements:

Range: 0 to 850 kPa (0 to 123.3 psia); approximately 0 to 76.5 m (0 to 251 ft) of water depth at sea level, or 0 to 79.5 m (0 to 262 ft) of water at 3,000 m (10,000 ft) of altitude

Factory Calibrated Range: 69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F)

Burst Pressure: 1,200 kPa (174 psia) or 112 m (368 ft)

Water Level Accuracy: Typical error: ±0.05% FS, 3.8 cm (0.125 ft) water Maximum error: ±0.1% FS, 7.6 cm (0.25 ft) water

Raw Pressure Accuracy: ±0.3% FS, 2.55 kPa (0.37 psi) maximum error

Resolution: <0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water

Pressure Response Time: <1 second to 90% at a stable temperature

Temperature Measurements:

Range: -20° to 50°C (-40° to 122°F), non-freezing water

Accuracy: ±0.15°C (±0.27°F) from 0° to 50°C (32° to 122°F)

Resolution: 0.01°C at 25°C (0.018°F at 77°F)

Response Time: 3 minutes to 90% in water (typical)

Sensor:

Dimensions: 2.5 cm (1 inch) diameter, 18.7 cm (7.37 inches) length

Weight: 177g (6.24 oz)

Deliver scope: CTD Sensor