Eco water level recorder (9m) U20L-01

THE' data recorder de water level HOBO U20L-01 is a solution measurement and ongoing monitoring low cost quality standards level and of water temperature in a wide range ofaquatic environments and until 9m depth.
It presents a accuracy of 0.1%, one polypropylene housing for use in freshwater and salt, and one design not ventilated for one practical deployment and hassle-free.
This data recorder requires either the U-DTW-1 waterproof shuttle or the optical USB base station Base-U-4 for configuration and unloading of data and software HOBOware Pro.

Technical specifications:

- Autonomous and unventilated design allows easy deployment
- Ideal for use in freshwater and salt water environments, including wells, streams, lakes, wetlands and tidal areas
- Depths up to 13, 30 or 100 feet depending on the model
- Durable ceramic pressure sensor resistant to frost
- Software HOBOware Pro allows easy conversion to accurate water level reading, fully compensated for barometric pressure, temperature and water density.

Note: A calibration certificate is not proposed for this recorder .
If you need a NIST traceable calibration certificate, please consult the U20-001-01 (fresh water) or U20-001-01-Ti (salt water).

Functionality of the (absolute) and water level sensor:

- Operating range: 0 to 207 kPa (0 to 30 psia), approximately 0 to 9 m (0 to 30 ft) water depth at sea level, or 0 to 12 m (0 to 40 ft) water at 3,000 m (10 000 ft) altitude
- Calibrated factory range: 69 to 207 kPa, 0° to 40°C (10 to 30 psia, 32 to 104°F)
- Breaking pressure: 310 kPa or 18 m deep (45 psia or 60 feet)
- 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
- Gross pressure accuracy**: ±0.3% FS, maximum error of 0.62 kPa (0.09 psi)
- Resolution: - Pressure response time (90%)***:

Temperature sensor features:

- Temperature 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 manual for route
- Resolution: 0.10°C to 25°C (0.18°F to 77°F), see manual for the route
- Response time (90%): 10 minutes in water (typical)
- Stability (driving): 0.1°C (0.18°F) per year

Recorder Features:

- Real time clock: ±1 minute per month 0° to 50°C (32° to 122°F)
- Battery: 2/3 AA, 3.6 V lithium, factory replaceable
- Battery autonomy (typical use): 5 years with a recording interval of at least 1 minute
- Memory (non-volatile): memory of 64 Kb (approximately 21,700 pressure and temperature samples)
- Weight:
Approximately 154 g (5.43 oz) in air
Approximately 53.9 g (1.9 oz) in freshwater
- Dimensions: 3.18 cm (1.25 inches) in diameter, 15.24 cm (6.0 inches) in length; 6.3 mm (0.25 inches) diameter mounting hole
- Wet materials: Polypropylene case and cord, Viton and Buna-N O-rings, ceramic sensor in an acetal tip, stainless steel screws suitable for salt water
- Journalization interval:
Fixed or multiple rate logging intervals, with up to 8 intervals and user-defined logging times
Recording intervals from 1 second to 6 p.m.
Please refer to the HOBOware User Guide for more details.
- Launch modes: immediate start and delayed start
- Method of unloading: Unload during logging, stop and unload
- Battery indicator: battery voltage can be viewed on the status screen and possibly stored in a data file, low battery indication in the data file.
- Environmental assessment: IP68