Special device from Easy Test
Accurate, affordable water level monitoring
The HOBO U20L-01 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% measurement accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment.
Note: A calibration certificate is not offered for this logger. If you require a NIST-traceable calibration certificate, please see the U20-001-01 (freshwater) or U20-001-01-Ti (saltwater).
Important Info: This logger requires HOBOware Pro software and either a U-DTW-1 Waterproof Shuttle or the Base-U-4 Optic USB Base Station for configuration and data offload.
U20 Series - Water Level Data Loggers U20-001-04 HOBO 13-Foot Depth Fresh Water Level Data Logger U20-001-04-Ti HOBO 13-Foot Depth Titanium Water Level Data Logger U20-001-01 HOBO 30-Foot Depth Fresh Water Level Data Logger U20-001-01-Ti HOBO 30-Foot Depth Titanium Water Level Data Logger U20-001-02 HOBO 100-Foot Depth Fresh Water Level Data Logger U20-001-02-Ti HOBO 100-Foot Depth Titanium Water Level Data Logger U20-001-03 HOBO 250-Foot Depth Fresh Water Level Data Logger U20-001-03-Ti HOBO 250-Foot Depth Titanium Water Level Data Logger KIT-D-U20-04 HOBO Water Level Data Logger Deluxe Kit (13ft) KIT-D-U20-01 HOBO Water Level Data Logger Deluxe Kit (30ft) KIT-D-U20-02 HOBO Water Level Data Logger Deluxe Kit (100ft) KIT-S-U20-02 HOBO Water Level Data Logger Starter Kit (100ft) KIT-S-U20-04 HOBO Water Level Data Logger Starter Kit (13ft) KIT-S-U20-01 HOBO Water Level Data Logger Starter Kit (30ft) U20L-01 HOBO Water Level (30ft) Data Logger U20L-02 HOBO Water Level (100ft) Data Logger U20L-04 HOBO Water Level (13 ft) Data Logger
Manuals
Spec Sheets
Other
Pressure (Absolute) and Water Level Measurements | |
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: ±0.1% FS, 1.0 cm (0.03 ft) water Maximum error: ±0.2% FS, 2.0 cm (0.06 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 at a stable temperature; measurement accuracy also depends on temperature response time |
Temperature Measurements | |
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%) | 10 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 | Approximately 154 g (5.43 oz) in air Approximately 53.9 g (1.9 oz) in fresh water |
Dimensions | 3.18 cm (1.25 inches) diameter, 15.24 cm (6.0 inches) length; mounting hole 6.3 mm (0.25 inches) diameter |
Wetted Materials | Polypropylene housing and lanyard; Viton and Buna-N O-rings; ceramic sensor in acetyl end cap; stainless steel screws suitable for saltwater |
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 User’s Guide for details |
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 |
CE Compliant | The CE Marking identifies this product as complying with all relevant directives in the European Union (EU) |
Test Equipment General Attributes | |
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Unique Features | Self-contained non-vented design enables easy deployment Ideal for use in both fresh and saltwater environments, including wells, streams, lakes, wetlands, and tidal areas Depths up to 30 feet |
Safety Approval | CE |
Product Weight | 154 GRAMS (0.340 LBS) |
Product Length | 6 IN |
Data Logging | Yes |
Battery Type | AA |
Power Supply Voltage | Battery Powered |
Country of Origin | United States |
Manufacturer | .... |
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Dimensions | .. × .. cm |
Weight | 00gm |
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