HOBO 9m Depth Titanium Water Level Data Logger

Highlighted 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
3-point NIST-traceable calibration certificate included

The U20-001-01-Ti data logger supports the following measurements: Absolute Pressure, Barometric Pressure, Temperature and Water Level

Pressure and Water Level Measurements****U20-001-01 and U20-001-01-Ti

Operation Range | 0 to 207 kPa (0 to 30 psia); approximately 0 to 9 m (0 to 30 ft) of water depth at sea level, or 0 to 12 m (0 to 40 ft) of water at 3,000 m (10,000 ft) of altitude
Factory Calibrated Range | 69 to 207 kPa (10 to 30 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: ±0.05% FS, 0.5 cm (0.015 ft) water
Maximum error: ±0.1% FS, 1.0 cm (0.03 ft) water
Raw Pressure Accuracy** | ±0.3% FS, 0.62 kPa (0.09 psi) maximum error
Resolution | <0.02 kPa (0.003 psi), 0.21 cm (0.007 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 in manual
Resolution | 0.10°C at 25°C (0.18°F at 77°F), see Plot A in manual
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)
Battery | 2/3 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)
Weight | Stainless steel models: approximately 210 g (7.4 oz)
Titanium models: approximately 140 g (4.8 oz)
Dimensions | 2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
Wetted Materials | Titanium, Viton® o-rings, acetyl cap, ceramic sensor
Logging Interval | Fixed-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 Modes | Immediate start and delayed start
Offload Modes | Offload while logging; stop and offload
Battery Indication | Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
Environmental Rating | IP68 |
| 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%.