Water Level (100 ft) Data Logger - HOBO - U20l-02

Water Level (100 ft) Data Logger - HOBO - U20l-02



Order Catalog

Description

HOBO U20L-02 dengan biaya yang rendah. Data logger tingkat tinggi untuk mengukur kadar air dan suhu di berbagai lingkungan bawah laut. Ini memiliki akurasi 0,1%, pelindung polypropylene untuk digunakan dalam air tawar dan garam, dan desain non-vented untuk pemasangan yang mudah dan tanpa kerumitan.

Tautan Bermanfaat:

Gambar lokasi sensor
Demo Asisten Kompensasi Tekanan Barometrik
Multi-rate Sampling Demo


Feature

  • Desain non-vented mandiri memungkinkan penyebaran yang mudah
  • Ideal untuk digunakan di lingkungan air tawar dan air asin, termasuk sumur, sungai, danau, lahan basah, dan daerah pasang surut
  • Kedalaman sampai 100 kaki
  • Sensor tekanan keramik tahan lama menahan pembekuan
  • Perangkat lunak HOBOware Pro memberikan konversi mudah ke pembacaan tingkat air yang akurat, kompensasi penuh untuk tekanan barometrik (lihat demo), suhu, dan kepadatan air

Catatan: Sertifikat kalibrasi tidak ditawarkan untuk logger ini. Jika Anda memerlukan sertifikat kalibrasi NIST-traceable, lihat U20-001-02 (air tawar) atau U20-001-02-Ti (air asin).


Spesification

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  
Pressure Response Time (90%)***  
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), 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%) 10 minutes in water (typical)
Stability (Drift) 0.1°C (0.18°F) per year
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
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 Approximately 154 g (5.43 oz) in air Approximately 53.9 g (1.9 oz) in fresh water
Dimensions 3.18 cm (1.25 inches) diameter, 15.24 cm (6.0 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
Wetted Materials Polypropylene housing and lanyard; Viton and Buna-N O-rings; ceramic sensor in acetyl 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 can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
CE Compliant 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 20 minutes in water to achieve full temperature compensation of the pressure sensor. Maximum error due to rapid thermal changes is approximately 0.5%