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Pressure (Absolute) and Water Level Measurements:
Operation Range: 0 to 145 kPa (0 to 21 psia); approximately 0 to 4 m (0 to 13 ft) of water depth at sea level, or 0 to 7 m (0 to 23 ft) of water at 3,000 m (10,000 ft) of altitude
Factory Calibrated Range: 69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F)
Burst Pressure: Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water; Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water
Water Level Accuracy: 69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F);
Raw Pressure Accuracy: ±0.3% FS, 0.62 kPa (0.09 psi) maximum error
Resolution: <0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water
Pressure Response Time (90%): <1 second; 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)
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)
Weight: approximately 210 g (7.4 oz)
Dimensions: 2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
Delivery scope:
U20-001-04 HOBO data logger (13' range)
BASE-U-4 base station with 5 interchangeable couplers
HOBOware Pro software
