| 利用できるサービス | |
|---|---|
| フリーサポート | 対応 |
概要
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.
続きを読む利点と特徴
- Compatible with most Campbell Scientific data loggers
- High frequency response suitable for eddy-covariance applications
- Well-suited for long-term, unattended applications
イメージ
詳細
The KH20 is typically used with a CSAT3B Sonic Anemometer in eddy-covariance systems for measuring water vapor flux. This highly sensitive hygrometer measures rapid fluctuations in atmospheric water vapor. It does not measure absolute concentrations. The KH20 is compatible with most of our data loggers.
Routine maintenance is required to keep source windows free of scale. You can use the water vapor absorption coefficient for scaled window from the data report if the window will be allowed to scale during measurements.
仕様
| Range | 1.7 to 19.5 g/m3 (nominal) |
| Type | Ultraviolet krypton hygrometer |
| Input Voltage Range | 10 V to 16 Vdc |
| Current Consumption | 20 mA max (at 12 Vdc) |
| Power Consumption | 0.24 W |
| Output Signal Range | 0 to 5 Vdc |
| Cable Length | 7.62 m (25 ft) |
| Mounting Pipe Length | 50 cm (20 in.) |
| Dimensions |
|
| Weight | 6.8 kg (15 lb) |
互換性
注意： 以下は代表的な互換性情報を示しています。互換性のある製品や互換性のない製品をすべて網羅したリストではありません。
Data Loggers
| 製品 | 互換性 | 注意 |
|---|---|---|
| 21X (リタイア) | ||
| CR10 (リタイア) | The CR10 requires a VDIV2:1 voltage divider. | |
| CR1000 (リタイア) | ||
| CR10X (リタイア) | The CR10X requires a VDIV2:1 voltage divider. | |
| CR200X (リタイア) | ||
| CR206X (リタイア) | ||
| CR211X (リタイア) | ||
| CR216X (リタイア) | ||
| CR23X (リタイア) | ||
| CR295X (リタイア) | ||
| CR3000 (リタイア) | ||
| CR500 (リタイア) | ||
| CR5000 (リタイア) | ||
| CR510 (リタイア) | ||
| CR800 (リタイア) | ||
| CR850 (リタイア) | ||
| CR9000 (リタイア) | ||
| CR9000X (リタイア) |
互換性に関する追加情報
Data Logger Considerations
The KH20 requires one single-ended analog input (signal is 0 to 5 Vdc), 12 V power, and ground.
ドキュメント
マニュアル
よくある質問
KH20に関するよくある質問の数： 4
すべて展開すべて折りたたむ
-
The sensors used in the eddy-covariance flux application, including the KH20, are not supported by SCWin.
-
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 return material authorization (RMA) number.
-
For a description, refer to the “Basic Measurement Theory” section in Appendix A of the KH20 Krypton Hygrometer Instruction Manual.
-
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.
ケーススタディ
Understanding the exchanges of energy, water, and carbon dioxide between the atmosphere, land, and plants......続きを読む
With instrumentation and help from Campbell Scientific, personnel from the Department of Atmospheric Sciences at......続きを読む
Privacy Policy Update
We've updated our privacy policy. 詳細はこちら
Cookie Consent
Update your cookie preferences. クッキーの設定を更新する