Campbell KH20 Manuel d'utilisateur

KH20 Krypton Hygrometer2/10Copyright © 2010Campbell Scientific, Inc.

KH20 Krypton Hygrometer 5. Datalogger Programming The KH20 sensor outputs 0 to 5 Vdc analog signal. These signals can be measured using the VoltDiff

KH20 Krypton Hygrometer 5.2 Example 1, CR3000 Program to Measure Water Vapor Fluctuations The following example program measures the KH20 at 10Hz, an

KH20 Krypton Hygrometer '*** Variables *** Public panel_temp Public batt_volt Public kh(2) Public rho_w Alias kh(1) = kh_mV Alias kh (2) = ln_kh

KH20 Krypton Hygrometer 6. Maintenance and Calibration The KH20 sensor is designed for continuous field application and requires little maintenance.

KH20 Krypton Hygrometer should see an immediate decrease in the voltage reading, and it should go close to zero. No noticeable change in the voltage

Appendix A. Calibrating KH20 A.1 Basic Measurement Theory The KH20 uses an empirical relationship between the absorption of the light and the materi

Appendix A. Calibrating KH20 44.555.566.577.581.74 3.02 4.17 5.44 6.71 7.95 9.2 10.47 11.69 12.9 14.22 15.46 16.78 18.04 19.25Vapor Density (g/m3)KH2

Appendix A. Calibrating KH20 the KH20 calibration certificate contains. The data shown in Table A-2 is from an actual KH20. TABLE A-2. Final Calibr

Appendix A. Calibrating KH20 A-4

Warranty and Assistance The KH20 KRYPTON HYGROMETER is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship und

Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbel

KH20 Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for

KH20 Table of Contents ii Tables 1. Datalogger Connections for Differential Measurement... 5 2. KH20 Calibration Ranges...

KH20 Krypton Hygrometer 1. General Description The KH20 is a krypton hygrometer for measuring water vapor fluctuations in the air. The name KH20 (KH

KH20 Krypton Hygrometer 2.3 Physical Dimensions Sensor Head: 11.5” x 9” x 1.25” (29 cm x 23 cm x 3 cm) Electronics Box: 7.5” x 5” x 2” (19 cm x

KH20 Krypton Hygrometer 3.2.2 Mounting the KH20 Sensor Mount the KH20 sensor head as follows: 1. Attach the 20 inch long mounting boom to the KH20.

KH20 Krypton Hygrometer 2. Before mounting the rain shield onto a tripod, first mount the electronics box inside the rain shield. Remove the four pa

KH20 Krypton Hygrometer 4. Connect the three cables to the bottom of the electronics box around the U-bolt on the rain shield (see Figure 3). If the