Ideal for monitoring water levels, fully compensated for barometric pressure, temperature, and water density; in wells, streams, lakes and freshwater wetlands.
Ideal for monitoring water levels, fully compensated for barometric pressure, temperature, and water density; in wells, streams, lakes and freshwater wetlands.
Features
Applications
Pressure Sensor | |
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 |
Temperature Sensor | |
Operation Range | -20 to 50°C (-4 to 122°F) |
Accuracy | 0.37°C at 20°C (0.67°F at 68°F), See Plot A |
Resolution | 0.1°C at 20°C (0.18°F at 68°F) (10-bit) |
Response Time (90%) | 3.5 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) |
Dimensions | 2.46 cm (0.97") Diameter, 15 cm (5.9") Length; Mounting Hole 6.3 mm (0.25") Diameter |
Weight | Approximately 210 g (7.4 oz) |
Wetted Materials | 316 Stainless Steel, Viton O-Rings, Acetyl Cap, Ceramic Sensor |
Shock/Drop | Logger is sensitive to shocks. Handle with care and avoid any impact. Always use proper packaging when shipping the logger. |
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 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. |
Click on a category to view a selection of compatible accessories with the Onset HOBO KIT-D-U20-01 Water Level Data Logger Deluxe Kit, 30'.
Pressure Sensor | |
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 |
Temperature Sensor | |
Operation Range | -20 to 50°C (-4 to 122°F) |
Accuracy | 0.37°C at 20°C (0.67°F at 68°F), See Plot A |
Resolution | 0.1°C at 20°C (0.18°F at 68°F) (10-bit) |
Response Time (90%) | 3.5 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) |
Dimensions | 2.46 cm (0.97") Diameter, 15 cm (5.9") Length; Mounting Hole 6.3 mm (0.25") Diameter |
Weight | Approximately 210 g (7.4 oz) |
Wetted Materials | 316 Stainless Steel, Viton O-Rings, Acetyl Cap, Ceramic Sensor |
Shock/Drop | Logger is sensitive to shocks. Handle with care and avoid any impact. Always use proper packaging when shipping the logger. |
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 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. |
Click on a category to view a selection of compatible accessories with the Onset HOBO KIT-D-U20-01 Water Level Data Logger Deluxe Kit, 30'.