Distributor Data Logger & Solusi Sistem Integrator Berbagai Aplikasi Industri
Records water level and temperature up to 13-ft depths; narrow range provides best accuracy in shallow waters. Available in stainless-steel for shallow wells, streams, lakes, and freshwater wetlands and in titanium for saltwater/brackish wetlands and tidal areas.
| Pressure and Water Level Measurements U20-001-04 and U20-001-04-Ti | |
| 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)
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| Burst Pressure |
310 kPa (45 psia) or 18 m (60 ft) depth
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| Water Level Accuracy* |
Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water
Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water
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| Raw Pressure Accuracy** |
±0.3% FS, 0.43 kPa (0.063 psi) maximum error |
| Resolution |
<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water
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| Pressure Response Time (90%)*** | <1 second; measurement accuracy also depends on temperature response time |
Temperature Measurements (All Models) |
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| Operation Range |
-20° to 50°C (-4° to 122°F)
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| Accuracy |
±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F), see Plot A in manual
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| Resolution |
0.10°C at 25°C (0.18°F at 77°F), see Plot A in manual
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| Response Time (90%) |
5 minutes in water (typical)
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| Stability (Drift) |
0.1°C (0.18°F) per year
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| Logger
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| Real-time Clock |
± 1 minute per month 0° to 50°C (32° to 122°F)
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| Battery |
2/3 AA, 3.6 Volt lithium, factory-replaceable
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| Battery Life (Typical Use) |
5 years with 1 minute or greater logging interval
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| Memory (Non-volatile) |
64K bytes memory (approx. 21,700 pressure and temperature samples)
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| Weight |
Stainless steel models: approximately 210 g (7.4 oz)
Titanium models: approximately 140 g (4.8 oz)
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| Dimensions |
2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
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| Wetted Materials |
316 stainless steel, Viton® o-rings, acetyl cap, ceramic sensor
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| 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 software manual.
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| Launch Modes |
Immediate start and delayed start
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| Offload Modes |
Offload while logging; stop and offload
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| Battery Indication |
Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
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| Environmental Rating |
IP68
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