HOBO 250-Foot Depth Water Level Data Logger

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PT. Global Intan Teknindo



Menampilkan akurasi tinggi dengan harga terjangkau dan kemudahan penggunaan, tanpa tabung ventilasi atau pengering yang tidak praktis untuk dirawat, logger ini sangat ideal untuk merekam ketinggian dan suhu air hingga kedalaman 250 kaki di sumur dangkal, sungai, danau, lahan basah air tawar (baja tahan karat), lahan basah air asin/payau, dan area pasang surut (titanium).


  • Lightning protection – no long signal wires, and electronics are shielded in a metal housing
  • HOBOware Pro software provides easy conversion to accurate water level reading, fully compensated for barometric pressure, temperature, and water density
  • Multiple-rate sampling allows faster sampling at critical times such as when pumping starts or stops
  • Available in four depth ranges
  • Ideal for use in wells, streams, lakes, wetlands, and tidal areas
  • No-vent-tube design for easy reliable deployment
  • Available in stainless and titanium versions
  • Durable ceramic pressure sensor
  • 3-point NIST-traceable calibration certificate included


Pressure and Water Level Measurements U20-001-03 and U20-001-03-Ti
Operation Range0 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 Range69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F)
Burst Pressure1200 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; measurement accuracy also depends on temperature response time
Temperature Measurements (All Models)
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), see Plot A in manual
Resolution0.10°C at 25°C (0.18°F at 77°F), see Plot A in manual
Response Time (90%)5 minutes in water (typical)
Stability (Drift)0.1°C (0.18°F) per year
Real-time Clock± 1 minute per month 0° to 50°C (32° to 122°F)
Battery2/3 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)
WeightStainless steel models: approximately 210 g (7.4 oz) Titanium models: approximately 140 g (4.8 oz)
Dimensions2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
Wetted Materials316 stainless steel, Viton® o-rings, acetyl cap, ceramic sensor
Logging IntervalFixed-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.
Launch ModesImmediate start and delayed start
Offload ModesOffload while logging; stop and offload
Battery IndicationBattery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
Environmental RatingIP68
Description: ce
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
 * Water Level Accuracy: With accurate reference water level measurement, known water density, accurate Barometric Compensation Assistant data, and a stable temperature environment.** Raw Pressure Accuracy: Absolute pressure sensor accuracy includes all sensor drift, temperature, and hysteresis-induced errors.*** Changes in Temperature: Allow 10 minutes in water to achieve full temperature compensation of the pressure sensor. Maximum error due to rapid thermal changes is approximately 0.5%.

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