Características Destacadas
Proteção contra raios - nenhum cabo de sinal longo e o sistema eletrônico são blindados em caixa de aço inoxidável para uso em água doce
O software HOBOware Pro oferece fácil conversão para leitura precisa do nível de água, totalmente compensada pela pressão barométrica, temperatura e densidade da água.
A amostragem de múltiplas taxas (ver demonstração) permite uma amostragem mais rápida em momentos críticos, como quando o bombeamento começa ou pára.
Disponível em 4 faixas de profundidade
Ideal para utilização em poços, riachos, lagos, zonas húmidas e zonas de maré
Design de tubo sem ventilação para uma implantação fácil e fiável.
Disponível nas versões em aço inoxidável e titânio
Sensor de pressão de cerâmica durável
Certificado de calibração rastreável NIST de 3 pontos incluído
O registrador de dados U20-001-04 suporta as seguintes medições: Pressão absoluta, pressão barométrica, temperatura e nível de água
| Pressure and Water Level Measurements U20-001-04 and U20-001-04-Ti |
| 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: ±0.075% FS, 0.3 cm (0.01 ft) water
Maximum error: ±0.15% FS, 0.6 cm (0.02 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; 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 |
± 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 |
|
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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%.
