Onset W-CTD-04 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 145 kPa (0 to 21 psia); approximately 0 to 4 m (0 to 13 ft) of water depth at sea level, or 0 to 7 m (0 to 23 ft) of water at 3,000 m (10,000 ft) of altitude

  Factory Calibrated Range: 69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F)

  Burst Pressure: 310 kPa (45 psia) or 18 m (60 ft) depth

  Water Level Accuracy: Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water; Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water

  Raw Pressure Accuracy: ±0.3% FS, 0.43 kPa (0.063 psi) maximum error

  Resolution: <0.014 kPa (0.002 psi), 0.14 cm (0.005 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