Onset MX802 Water Data Logger (-40°~50°C)

Operating Range: -40° to 50°C (-40° to 122°F), cannot be frozen in ice

Maximum Cable Length: 120m (400 ft)

Logging Rate: 5 second to 18 hours

Time Accuracy: ±1 minute per month 0° to 50°C (32° to 122°F)

Battery: Four AA, 1.5 V lithium batteries, user replaceable

Memory: 

730,000 measurements, divided between channels (4 Mbyte memory)

Barometric Pressure:

  Measurement & Calibrated Range: 66 to 107 kPa (9.6 to 15.5 psia), -20° to 50°C (-4° to 122°F)

  Accuracy: Typical error: ±0.2 kPa (0.029 psi); Maximum error: ±0.5 kPa (0.073 psi)

  Resolution: <0.01 kPa (0.0015 psi)

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

  Contribution to 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

Dimensions:

  Logger diameter: 4.14 cm (1.63 inches)

  Length without sensor: 20 cm (8 inches)

  Length with W-CTD sensor: 36 cm (14 inches)

  Length with W-CT sensor: 33 cm (13 inches)

  Mounting loop: 12.7 x 22.6 mm (0.5 x 0.89 inches)

Weight: Logger Head Only: 226 gam (7.97 oz)

Delivery scope: 

  HOBO MX802 data logger

  Coupler

  3/32” Allen wrench

HOBO MX800 Series multiparameter wireless data loggers work with interchangeable sensors to provide a highly configurable solution for monitoring water conductivity/salinity, temperature, depth, and dissolved oxygen. Available in both an easy-to-deploy, fully submersible model (MX801) and a direct read model (MX802) for convenient data offload that doesn't require having to remove sensors from the water.

User guide

Video