Onset HOBO U20-001-02-Ti 100-Foot Depth Titanium Water Level Data Logger

SKU
U20-001-02-Ti
Manufacturer:
Onset
Onset

Key Features:

  • Lightning protection - no long signal wires and electronics are shielded in a titanium housing for use in saltwater
  • HOBOware Pro software provides easy conversion to accurate water level reading fully compensated for barometric pressure temperature and water density
  • Multiple-rate sampling allows faster sampling at critical times such as when pumping starts or stops
  • Available in 4 depth ranges
  • Ideal for use in wells streams lakes wetlands and tidal areas
  • No-vent-tube design for easy reliable deployment
  • Available in stainless and titanium versions
  • Durable ceramic pressure sensor
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The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas. This data logger features high accuracy at a great price and HOBO ease-of-use, with no cumbersome vent tubes or desiccants to maintain.
Pressure and Water Level Measurements U20-001-02 and U20-001-02-Ti
Operation Range0 to 400 kPa (0 to 58 psia); approximately 0 to 30.6 m (0 to 100 ft) of water depth at sea level, or 0 to 33.6 m (0 to 111 ft) of water at 3,000 m (10,000 ft) of altitude
Factory Calibrated Range69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F)
Burst Pressure500 kPa (72.5 psia) or 40.8 m (134 ft) depth
Water Level Accuracy*Typical error: ±0.05% FS, 1.5 cm (0.05 ft) water
Maximum error: ±0.1% FS, 3 cm (0.1 ft) water
Raw Pressure Accuracy**±0.3% FS, 1.20 kPa (0.17 psi) maximum error
Resolution<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water
Pressure Response Time (90%)***<1 second; measurement accuracy also depends on temperature response time
Temperature Measurements (All Models)
Operation Range-20° to 50°C (-4° to 122°F)
Accuracy±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F), see Plot A
Resolution0.10°C at 25°C (0.18°F at 77°F), see Plot A
Response Time (90%)5 minutes in water (typical)
Stability (Drift)0.1°C (0.18°F) per year
Logger
Real-time Clock± 1 minute per month 0° to 50°C (32° to 122°F)
Battery2/3 AA, 3.6 Volt lithium, factory-replaceable
Battery Life (Typical Use)5 years with 1 minute or greater logging interval
Memory (Non-volatile)64K bytes memory (approx. 21,700 pressure and temperature samples)
WeightStainless steel models: approximately 210 g (7.4 oz)
Titanium models: approximately 140 g (4.8 oz)
Dimensions2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
Wetted MaterialsTitanium, Viton® o-rings, acetyl cap, ceramic sensor
Logging IntervalFixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hours. Refer to the HOBOware software manual.
Launch ModesImmediate start and delayed start
Offload ModesOffload while logging; stop and offload
Battery IndicationBattery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).

* Water Level Accuracy: With accurate reference water level measurement, known water density, accurate Barometric Compensation Assistant data, and a stable temperature environment.

** Raw Pressure Accuracy: Absolute pressure sensor accuracy includes all sensor drift, temperature, and hysteresis-induced errors.

*** Changes in Temperature: Allow 10 minutes in water to achieve full temperature compensation of the pressure sensor. Maximum error due to rapid thermal changes is approximately 0.5%.

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