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Pressure Sensor:
Operation range: 0 to 850 kPa (0 to 123.3 psia); approximately 0 to 76.5 m (0 to 251 ft) of water depth at sea level, or 0 to 79.5 m (0 to 262 ft) of water at 3,000 m (10,000 ft) of altitude
Factory calibrated range: 69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F)
Burst pressure: 1200 kPa (174 psia) or 112 m (368 ft) depth
Water level accuracy: Typical error: ±0.05 % FS, 3.8 cm (0.125 ft) water; Maximum error: ±0.1% FS, 7.6 cm (0,25 ft) water
Raw pressure accuracy: ±0.3% FS, 2.55 kPa (0.37 psi) maximum error
Resolution: <0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water
Pressure response time: 90% < 1 second
Thermal response time (90%): Approximately 10 minutes in water to achieve full temperature compensation of the pressure sensor
Temperature Sensor:
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)
Resolution: 0.10°C at 25°C (0.18°F at 77°F)
Response time (90%): 5 minutes in water (typical)
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
Memory (non-volatile): 64K bytes memory (approx. 21,700 pressure and temperature samples)
Dimensions: 2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
Weight: Approximately 210 g (7.4 oz)
Delivery scope: HOBO U20-001-03 Water Level Data Logger (250-foot depth)
