U20L-04
Nuevo
Disponible el:
El HOBO U20L-04 es un registrador de datos de bajo costo y grado de investigación para medir continuamente el nivel y la temperatura del agua en una amplia gama de entornos subacuáticos. Cuenta con una precisión de medición del 0,1%, una carcasa de polipropileno para usar en agua dulce y salada, y un diseño sin ventilación para un despliegue conveniente y sin complicaciones.
El diseño sin ventilación autónomo permite un fácil despliegue
Ideal para usar en ambientes de agua dulce y salada, incluidos pozos, arroyos, lagos, humedales y áreas de marea
Profundidades de hasta 13 pies (0-4 m)
El sensor de presión cerámico duradero soporta la congelación
El software HOBOware Pro facilita la conversión de lecturas precisas de nivel de agua, totalmente compensadas por las variables de presión barométrica, temperatura y densidad de agua.
Entorno:
El Registrador de Datos U20L-04 Data es para entornos de Intemperie y Bajo Agua
Medidas:
El Registrador de Datos U20L-04 soporta las siguientes medidas: Temperatura, Presión Barométrica, Nivel de agua
IMPORTANTE: HOBO data loggers require HOBOware software (USB interface cable included w/CD purchase) and a communications device. Ver Software/Accesorios.
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 | |
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 |
Resolution | 0.10°C at 25°C (0.18°F at 77°F), see Plot A |
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. |
* 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%.
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