U20L-04 Registrador HOBO Nivel Agua (0-4 m)

U20L-04

Onset

Nuevo

321,00 €

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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