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Este producto tiene disponibilidad limitada. Será reemplazado por: CPEC310,IRGASON,EC150,CPEC300,CPEC306. Algunos accesorios, recambios, o servicios podrían estar todavía disponibles cuando sea descatalogado.
KH20 Higrómetro Krypton
Measure Rapid Fluctuations in Atmospheric Water Vapour
meteorología aplicaciones agua aplicaciones energía aplicaciones flujo gas y turbulencia aplicaciones infraestructuras aplicaciones suelo aplicaciones

Resumen

The KH20 is a highly sensitive hygrometer designed for measurement of rapid fluctuations in atmospheric water vapor, not absolute concentrations. It is typically used together with a CSAT3B in eddy-covariance systems. 

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Ventajas y características

  • Compatible con la mayoría de dataloggers Campbell Scientific
  • Respuesta en alta frecuencia adecuado para aplicaciones eddy-covariance
  • Adecuado para aplicaciones desatendidas y a largo plazo

Imágenes

KH20 with mounting equipment (sold separately)
KH20 with mounting equipment (sold separately)
KH20 with mounting equipment (sold separately)
KH20 mounted with the CSAT3B and FW3 (items sold separately)
KH20 mounted with the CSAT3B, FW3, temperature and relative humidity probe, and tripod (items sold separately)

Descripción detallada

The KH20 is typically used with a CSAT3 Sonic Anemometer in eddy-covariance systems. This highly sensitive hygrometer measures rapid fluctuations in atmospheric water vapour. It does not measure absolute concentrations. The KH20 is compatible with most of our dataloggers.

Routine maintenance is required to keep source windows free of scale. The KH20 can be used with the window scaled if scaled calibration is used.

Especificaciones

Rango calibrado 1.7 to 19.5 g/m3 (nominal)
Type Ultraviolet krypton hygrometer
Rango voltaje entrada 10 V to 16 Vdc
Consumo 20 mA max (at 12 Vdc)
Power Consumption 0.24 W
Rango señal de salida 0 to 5 Vdc
Longitud de cable 7.62 m (25 ft)
Mounting Pipe Length 50 cm (20 in.)
Dimensiones
  • 29 x 23 x 3 cm (11.5 x 9 x 1.25 in.) for sensor head
  • 19 x 13 x 5 cm (7.5 x 5 x 2 in.) for electronics box
  • 29 x 18 x 6.5 cm (11.5 x 7 x 2.5 in.) for rain shield with mount
  • 64 x 38 x 18 cm (25 x 15 x 7 in.) for carrying case
Peso 6.8 kg (15 lb)

Compatibilidad

Nota: lo siguiente muestra información de compatibilidad notable. No es una lista de todos los productos compatibles.

Dataloggers

Producto Compatible Nota
CR1000 (retired)
CR200X (retired)
CR216X (retired)
CR3000
CR5000 (retired)
CR800
CR850
CR9000X

Miscelaneo

Producto Compatible Nota
21X (retired)
CR10 (retired) The CR10 requires a VDIV2:1 voltage divider.
CR10X (retired) The CR10X requires a VDIV2:1 voltage divider.
CR23X (retired)
CR500 (retired)
CR510 (retired)
CR9000 (retired)

Información de compatibilidad adicional

Data Logger Considerations

The KH20 requires one single-ended analog input (signal is 0 to 5 Vdc), 12 V power, and ground.

Documentos

Preguntas frecuentes

Número de FAQs relacionadas con KH20: 4

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  1. Where is the KH20 listed as a component in the Short Cut (SCWin) program?

    The sensors used in the eddy-covariance flux application, including the KH20, are not supported by SCWin.

  2. What is the best way to replace the sealant around the KH20 source/detector tubes?

    The seal around the source/detector tubes is not user serviceable. If the seal has failed, return the KH20 to the factory for repair. Follow the steps listed on our Repair and Calibration page to request a returned material authorization (RMA) number. 

  3. How does the KH20 work?

    For a description, refer to the “Basic Measurement Theory” section in Appendix A of the KH20 Krypton Hygrometer Instruction Manual.

  4. Is there a composite program for eddy-covariance measurements that uses the KH20?

    An open-path eddy-covariance program is available for purchase as pn 18442, CRBasic Basic Eddy Covariance Program. This is the program without energy balance sensors. Also available is pn 18443, CRBasic Extended Eddy Covariance Program, with energy balance sensors. To order a custom configured program, contact the Micrometeorology Flux group for assistance.

Casos de aplicación

california: turbulence study in walnut orchard
California: Turbulence Study in Walnut Orchard
Understanding the exchanges of energy, water, and carbon dioxide between the atmosphere, land, and plants......leer más
korea: flux monitoring over a rice paddy
Korea: Flux Monitoring Over a Rice Paddy
With instrumentation and help from Campbell Scientific, personnel from the Department of Atmospheric Sciences at......leer más
Explorar todos los Casos de Aplicación.