HOBO Water Level Data Logger

Overview

Data logger kelas riset dengan biaya terjangkau untuk pemantauan kontinu ketinggian muka air dan suhu hingga kedalaman 13, 30, atau 100 kaki, cocok untuk lingkungan bawah air air tawar maupun air laut.

Features

  • Desain mandiri tanpa ventilasi untuk pemasangan yang mudah
  • Cocok untuk air tawar dan air laut, termasuk sumur, sungai, danau, lahan basah, serta area pasang surut
  • Pilihan kedalaman hingga 13, 30, atau 100 kaki tergantung model
  • Sensor tekanan keramik yang tahan lama dan tahan kondisi beku
  • Perangkat lunak HOBOware Pro memudahkan konversi data menjadi pembacaan ketinggian air yang akurat, dengan kompensasi tekanan udara, suhu, dan densitas air

Specifications

Pressure (Absolute) and Water Level Measurements U20L-01

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, 0° to 40°C
10 to 30 psia, 32° to 104°F
Burst Pressure 310 kPa or 18 m depth
45 psia or 60 ft depth
Water Level Accuracy* Typical error: ±0.1% FS, 1.0 cm (0.03 ft) water
Maximum error: ±0.2% FS, 2.0 cm (0.06 ft) water
Raw Pressure Accuracy ±0.3% FS, 0.62 kPa (0.09 psi) maximum error
Resolution <0.02 kPa water
0.007 ft water
Pressure Response Time (90%)*** <1 second at a stable temperature; measurement accuracy also depends on temperature response time

Pressure (Absolute) and Water Level Measurements U20L-02

Operation Range 0 to 400 kPa (0 to 58 psia); approximately 0 to 30.6 m (0 to 100 ft) of water depth at sea level, or 0 to 33.6 m (0 to 111 ft) of water at 3,000 m (10,000 ft) of altitude
Factory Calibrated Range 69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F)
Burst Pressure 500 kPa (72.5 psia) or 40.8 m (134 ft) depth
Water Level Accuracy* Typical error: ±0.1% FS, 3.0 cm (0.1 ft) water
Maximum error: ±0.2% FS, 6.0 cm (0.2 ft) water
Raw Pressure Accuracy** ±0.3% FS, 1.20 kPa (0.17 psi) maximum error
Resolution <0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water
Pressure Response Time (90%)*** <1 second at a stable temperature; measurement accuracy also depends on temperature response time

Pressure (Absolute) and Water Level Measurements U20L-04

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 310 kPa (45 psia) or 18 m (60 ft) depth
Water Level Accuracy* Typical error: ±0.1% FS, 0.4 cm (0.013 ft) water
Maximum error: ±0.2% FS, 0.8 cm (0.026 ft) water
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
Pressure Response Time (90%)*** <1 second at a stable temperature; 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
Resolution 0.10°C at 25°C
0.18°F at 77°F
Response Time (90%) 10 minutes in water (typical)
Stability (Drift) 0.1°C per year
0.18°F per year

Logger Specifications

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 (approx. 21,700 pressure and temperature samples)
Weight Approximately 154 g (5.43 oz) in air
Approximately 53.9 g (1.9 oz) in fresh water
Dimensions 3.18 cm diameter × 15.24 cm length; mounting hole 6.3 mm diameter
Wetted Materials Polypropylene housing and lanyard; Viton and Buna-N O-rings; ceramic sensor in acetal end cap; stainless steel screws suitable for saltwater
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 User’s Guide for details
Launch Modes Immediate start and delayed start
Offload Modes Offload while logging; stop and offload
Battery Indication Battery voltage viewable and optionally logged; low battery indication in datafile
Environmental Rating IP68