LWS Leaf-Wetness Sensor

Pedido de Orçamento Faça uma Pergunta Faça uma Pergunta

Leaf Wetness Sensors / LWS

Sensitive yet Durable
Compatible with most Campbell Scientific data loggers

Images
Compatibility
Specifications
Documents
FAQs
Case Studies

Visão Geral

The LWS, manufactured by METER Environment, can detect small amounts of water or ice on the sensor surface for leaf wetness applications. Because the LWS measures the dielectric constant of the sensor’s upper surface, it can detect the presence of water or ice anywhere on the sensor’s surface.

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.

Note: The LWS was previously ordered as the LWS-L.

Benefícios e Características

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

imagens

Compatibilidade

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Data Loggers

Product	Compatible	Note
CR1000 (retired)
CR1000X (retired)
CR300 (retired)
CR3000 (retired)
CR310
CR350
CR6
CR800 (retired)
CR850 (retired)

Additional Compatibility Information

Installation

Especificações

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

Documentos Relacionados

Perguntas Frequentes Relacionadas

Number of FAQs related to LWS: 8

Expandir todosRecolher todos

Can a leaf wetness sensor be added to an ET107?

No.
How many LWS sensors can be connected to an AM16/32B multiplexer?

48.
What advantages does the LWS have as compared with the 237-L?
- 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.
What is the difference between the LWS and the 237-L leaf wetness sensors?

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.
What are the different cable length choices available for Campbell Scientific sensors?
Most Campbell Scientific sensors are available as an –L, which indicates a user-specified cable length. If a sensor is listed as an –LX model (where “X” is some other character), that sensor’s cable has a user-specified length, but it terminates with a specific connector for a unique system:
- An –LC model has a user-specified cable length for connection to an ET107, CS110, or retired Metdata1.
- An –LQ model has a user-specified cable length for connection to a RAWS-P weather station.
If a sensor does not have an –L or other –LX designation after the main model number, the sensor has a set cable length. The cable length is listed at the end of the Description field in the product’s Ordering information. For example, the 034B-ET model has a description of “Met One Wind Set for ET Station, 67 inch Cable.” Products with a set cable length terminate, as a default, with pigtails.

If a cable terminates with a special connector for a unique system, the end of the model number designates which system. For example, the 034B-ET model designates the sensor as a 034B for an ET107 system.
- –ET models terminate with the connector for an ET107 weather station.
- –ETM models terminate with the connector for an ET107 weather station, but they also include a special system mounting, which is often convenient when purchasing a replacement part.
- –QD models terminate with the connector for a RAWS-F Quick Deployment Station.
- –PW models terminate with the connector for a PWENC or pre-wired system.
Where are the available cable termination options listed for a particular sensor?
Not every sensor has different cable termination options. The options available for a particular sensor can be checked by looking in two places in the Ordering information area of the sensor product page:
- Model number
- Cable Termination Options list
If a sensor is offered in an –ET, –ETM, –LC, –LQ, or –QD version, that option’s availability is reflected in the sensor model number. For example, the 034B is offered as the 034B-ET, 034B-ETM, 034B-LC, 034B-LQ, and 034B-QD.

All of the other cable termination options, if available, are listed on the Ordering information area of the sensor product page under “Cable Termination Options.” For example, the 034B-L Wind Set is offered with the –CWS, –PT, and –PW options, as shown in the Ordering information area of the 034B-L product page.

Note: As newer products are added to our inventory, typically, we will list multiple cable termination options under a single sensor model rather than creating multiple model numbers. For example, the HC2S3-L has a –C cable termination option for connecting it to a CS110 instead of offering an HC2S3-LC model.
What are the different cable termination options available for Campbell Scientific sensors?
Many Campbell Scientific sensors are available with different cable termination options. These options include the following:
- The –PT (–PT w/Tinned Wires) option is the default option and does not display on the product line as the other options do. The cable terminates in pigtails that connect directly to a data logger.
- In the –C (–C w/ET/CS110 Connector) option, the cable terminates in a connector that attaches to a CS110 Electric Field Meter or an ET-series weather station.
- In the –CWS (–CWS w/CWS900 Connector) option, the cable terminates in a connector that attaches to a CWS900-series interface. Connection to a CWS900-series interface allows the sensor to be used in a wireless sensor network.
- In the –PW (–PW w/Pre-Wire Connector) option, the cable terminates in a connector that attaches to a prewired enclosure.
- In the –RQ (–RQ w/RAWS Connector) option, the cable terminates in a connector that attaches to a RAWS-P Permanent Remote Automated Weather Station.
Note: The availability of cable termination options varies by sensor. For example, sensors may have none, two, or several options to choose from. If a desired option is not listed for a specific sensor, contact Campbell Scientific for assistance.
What is needed to connect a sensor that is compatible with wireless sensor interfaces to a CR800, CR1000, or CR3000 in a wireless network?

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.

Visite a FAQ Biblioteca

Estudos de Caso

Zambia: Strengthening Climate Resilience
Overview In May 2019, the Government of Zambia embarked on the Climate Adaptation Water and Energy......Leia mais

Colombia: Fighting Fungus on Roses
The cultivation and export of roses and other flowers is a huge business in Colombia.......Leia mais

Explore Todos os Estudos de Casos