HOBO 250-Foot Depth Water Level Data Logger - U20-001-03

HOBO 250-Foot Depth Water Level Data Logger - U20-001-03



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Description

HOBO water level data logger features memiliki akurasi tinggi dengan harga terjangkau dan kemudahan penggunaan, tanpa tabung ventilasi atau desiccant yang tidak praktis untuk pemeliharaan. Data logger ini sangat ideal untuk mencatat tingkat air dan suhu di sumur dangkal, sungai, danau dan lahan basah air tawar.


Feature

  • 3-point NIST-traceable calibration certificate included
  • Anti petir - tidak ada kabel sinyal yang panjang, dan elektronik terlindung di perumahan stainless steel untuk digunakan di air tawar (lihat gambar lokasi sensor logger Water Level)
  • Perangkat lunak HOBOware Pro memberikan konversi mudah ke pembacaan tingkat air yang akurat, kompensasi penuh untuk tekanan barometrik (lihat demo), dan kepadatan air.
  • Multiple-rate sampling (lihat demo) memungkinkan pengambilan sampel lebih cepat pada saat-saat kritis seperti saat memompa dimulai atau berhenti.
  • Tersedia dalam 4 rentang kedalaman
  • Ideal untuk digunakan di sumur, sungai, danau, lahan basah dan daerah pasang surut
  • Desain no-vent-tube untuk penyebaran yang mudah diandalkan
  • Tersedia dalam versi stainless dan titanium
  • Sensor tekanan keramik tahan lama
  • Sertifikat kalibrasi NIST-traceable 3-point disertakan

Spesification

Produk ini berasal dari Amerika Serikat. Untuk melihat spesifikasi lengkap produk ini, jika tersedia lihat manual book yang terdapat pada tab dokumentasi.

Pressure and Water Level Measurements U20-001-03 and U20-001-03-Ti
Operation Range 0 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 Range 69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F)
Burst Pressure 1200 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  
Pressure Response Time (90%)***  
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 ± 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.
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 10 minutes in water to achieve full temperature compensation of the pressure sensor. Maximum error due to rapid thermal changes is approximately 0.5%.