Compatible with most Campbell Scientific dataloggers
Resumen
El sensor de humectación en hoja LWS fabricado por METER Group Inc. puede detectar pequeñas cantidades de agua o hielo depositados en la superficie del sensor. Debido a que el LWS mide la constante dieléctrica de la superficie superior del sensor, puede detectar la presencia de agua o hielo en cualquier parte de la superficie del sensor.
Se ha diseñado para utilizarse tanto dentro de la masa foliar de un cultivo como para fijarse en la estructura de una estación meteorológica. La salida de señal de este sensor puede medirla cualquiera de nuestros dataloggers.
Leer másVentajas y características
- Imita características de una hoja
- No requiere pintar ni calibrar el sensor individualmente
- Detecta trazas de agua o hielo en la superficie de la hoja
Imágenes
Descripción detallada
El LWS mide la constante dieléctrica de la superficie superior del sensor. Este método permite al sensor detectar la presencia de agua o hielo en su superficie.
Preguntas frecuentes
Número de FAQs relacionadas con LWS: 5
Expandir todoDesplegar todo
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- The ability of the LWS to detect water on its surface is not limited by the size of the water droplets, as it can be with a 237-L.
- The LWS is ready to install for most applications, whereas the 237-L requires further preparation before installation.
- The LWS can detect the presence of ice and differentiate ice from water. In contrast, when ice forms on the 237-L, the sensor’s output is no different from that of a dry sensor.
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Both leaf wetness sensors are compatible with all Campbell Scientific data loggers. However, the 237-L is often used in large legacy networks that rely on the 237-L for data continuity. The 237-L does require painting and field calibration, whereas the LWS does not.
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To incorporate a sensor that is compatible with wireless sensor interfaces into a wireless network, a CWS900-series wireless sensor interface is needed, as well as an A205 CWS-to-PC interface to configure it.
Compatibilidad
Nota: lo siguiente muestra información de compatibilidad notable. No es una lista de todos los productos compatibles.
Dataloggers
| Producto | Compatible | Nota |
|---|---|---|
| CR1000 (retired) | ||
| CR1000X (retired) | ||
| CR300 (retired) | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Información de compatibilidad adicional
Installation
The LWS is designed to be deployed either in the canopy or on a weather station mast. Two holes in the non-sensing portion of the sensor body are provided for attaching the sensor to a pole or branch via twist ties or with 4-40 bolts.
Especificaciones
| Measurement Description | Dry, frosted, wet |
| Signal Type/Output | Analog voltage |
| Measurement Time | 10 ms |
| Power | 2.5 Vdc @ 2 mA to 5 Vdc @ 7 mA |
| Output | 250 to 1500 mV (millivolt reading relates to moisture state) |
| Operating Temperature Range | -40° to +60°C |
| Life Expectancy | 2+ years (continuous use) |
| Painting | Does not require painting. |
| Dimensions | 12.0 x 5.8 x 0.8 cm (4.7 x 2.3 x 0.3 in.) |
| Weight | 0.14 kg (5 oz) with 4.57 m (15 ft) cable |
Casos de aplicación
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