与我们大多数的数据采集器相兼容
概览
LWS 叶片湿度传感器能探测在传感器表面上的小量的水或冰。设计用于部署在冠层里，或气象站的主桅杆上。我们所有的数据采集器都能测量LWS的输出信号。
优势与特点
- Imitates characteristics of a leaf
- Does not require painting or calibration of individual sensors
- Detects trace amounts of water or ice on the leaf surface
图像
技术说明
LWS 测量传感器上表面的介电常数。这种方法允许传感器检测传感器表面上任何位置的水或冰的存在。
产品规格
| 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 |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
数据采集器
| Product | Compatible | Note |
|---|---|---|
| CR1000X (retired) | ||
| CR300 (retired) | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
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.
常见问题解答
LWS-L: 4
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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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