Ringkasan
Pencatat data berbiaya rendah dan berkelas penelitian untuk memantau ketinggian dan suhu air secara terus-menerus pada kedalaman hingga 13, 30, atau 100 kaki di berbagai lingkungan bawah air. Logger ini memiliki akurasi pengukuran 0,1%, wadah polipropilen untuk digunakan di air tawar dan air asin, dan desain tanpa ventilasi untuk penerapan yang nyaman dan tidak merepotkan.
Fitur
Desain mandiri dan tanpa ventilasi memungkinkan penerapan yang mudahIdeal untuk digunakan di lingkungan air tawar dan air asin, termasuk sumur, sungai, danau, lahan basah, dan daerah pasang surutKedalamannya hingga 13, 30, atau 100 kaki tergantung modelSensor tekanan keramik yang tahan lama tahan terhadap pembekuanPerangkat lunak HOBOware Pro memberikan konversi yang mudah ke pembacaan ketinggian air yang akurat, kompensasi penuh untuk tekanan barometrik, suhu, dan kepadatan air
Catatan: Sertifikat kalibrasi tidak ditawarkan untuk logger ini. Jika Anda memerlukan sertifikat kalibrasi yang dapat dilacak NIST, lihat U20-001-01 (air tawar) atau U20-001-01-Ti (air asin).
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 , see manual for plot
±0.79°F from 32° to 122°F , see manual for plot
- Resolution
-
0.10°C at 25°C , see manual for plot
0.18°F at 77°F , see manual for plot
- Response Time (90%)
-
10 minutes in water (typical)
- Stability (Drift)
-
0.1°C per year
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 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 can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
- Environmental Rating
-