Description
U20L-004 adalah logger data tingkat rendah dengan tingkat biaya penelitian rendah untuk mengukur tingkat air dan suhu secara terus-menerus di berbagai lingkungan bawah laut. Ini memiliki akurasi pengukuran 0,1%, perumahan polypropylene untuk digunakan dalam air tawar dan garam, dan desain non-vented untuk pemasangan yang mudah dan tanpa kerumitan.
Feature
•Self-contained non-vented design enables easy deployment
•Ideal for use in both fresh and saltwater environments, including wells, streams, lakes, wetlands, and tidal areas
•Depths up to 13 feet
•Durable ceramic pressure sensor withstands freezing
Spesification
| 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 | |
| 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. |
 |
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). |
