HOBO 30-Foot Depth Water Level Data Logger

Overview

Merekam ketinggian air dan suhu hingga kedalaman 30 kaki tanpa memerlukan vent tube atau desiccant yang rumit untuk perawatan. Tersedia dalam versi stainless steel untuk sumur dangkal, sungai, danau, serta lahan basah air tawar, dan versi titanium untuk lahan basah air asin/payau serta area pasang surut.

Features

  • Perlindungan terhadap petir — tanpa kabel sinyal panjang, dan elektronik terlindungi dalam housing logam
  • Perangkat lunak HOBOware Pro memudahkan konversi data menjadi pembacaan ketinggian air yang akurat, dengan kompensasi penuh terhadap tekanan barometrik, suhu, dan densitas air
  • Sampling multi-rate memungkinkan pengambilan data lebih cepat pada momen kritis, seperti saat pompa mulai atau berhenti
  • Tersedia dalam empat pilihan rentang kedalaman
  • Ideal untuk digunakan di sumur, sungai, danau, lahan basah, dan area pasang surut
  • Desain tanpa vent tube untuk pemasangan yang mudah dan andal
  • Tersedia dalam versi stainless steel dan titanium
  • Sensor tekanan keramik yang tahan lama
  • Termasuk sertifikat kalibrasi 3-point NIST-traceable

Specifications

Pressure and Water Level Measurements U20-001-01 and U20-001-01-Ti

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 (10 to 30 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: ±0.05% FS, 0.5 cm (0.015 ft) water
Maximum error: ±0.1% FS, 1.0 cm (0.03 ft) water
Raw Pressure Accuracy ±0.3% FS, 0.62 kPa (0.09 psi) maximum error
Resolution <0.02 kPa (0.003 psi), 0.21 cm (0.007 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
Resolution 0.10°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

Logger

Real-time Clock Accuracy
± 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 memory (approx. 21,700 pressure and temperature samples)
Weight
Stainless steel models: approximately 210 g (7.4 oz)
Titanium models: approximately 140 g (4.8 oz)
Dimensions 2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
Wetted Materials 316 stainless steel, Viton® o-rings, acetyl cap, ceramic sensor
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.
Launch Modes Immediate start and delayed start
Offload Modes Offload while logging; stop and offload
Battery Indication Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
Environmental Rating IP68