Depth Water Level 100-Foot Data Logger. HOBO - U20-001-02-Ti
100-Foot Depth Water Level
The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas. This data loggerfeatures high accuracy at a great price and HOBO ease-of-use, with no cumbersome vent tubes or desiccants to maintain.
Environment:
The U20-001-02-Ti Data Logger is for use inOutdoor and Underwater environments
Measurements:
The U20-001-02-Ti Data Logger supports the following measurements:
Temperature • Barometric Pressure • Water Level
IMPORTANT:
This HOBO data logger requires HOBOware Pro software and a communications device. See compatible items below.
The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas. This data loggerfeatures high accuracy at a great price and HOBO ease-of-use, with no cumbersome vent tubes or desiccants to maintain.
Environment:
The U20-001-02-Ti Data Logger is for use inOutdoor and Underwater environments
The U20-001-02-Ti Data Logger supports the following measurements:
Feature
- Lightning protection - no long signal wires, and electronics are shielded in a titanium housing for use in saltwater (see the Water Level logger sensor location drawing)
- HOBOware Pro software provides easy conversion to accurate water level reading, fully compensated for barometric pressure (see demo) temperature, and water density.
- Multiple-rate sampling (see demo) 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
Spesification
To see the full specifications for this product, please see our product manual found under the documentation tab.
Pressure and Water Level Measurements U20-001-02 and U20-001-02-Ti | |
Operation Range | 0 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 Range | 69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F) |
Burst Pressure | 500 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 | |
Pressure Response Time (90%)*** | |
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 |
Resolution | 0.10°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) |
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. |
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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