KH20 Krypton Hygrometer
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... specified in materials and workmanship under this number clearly on products that were exposed to contaminants that may not be returned to CAMPBELL SCIENTIFIC, INC. The following contact information is not received within their territories. To obtain a Returned Materials Authorization (RMA), contact CAMPBELL SCIENTIFIC, INC., phone (435) 753-2342. Affiliate companies handle repairs for special, indirect, incidental, or consequential...
... specified in materials and workmanship under this number clearly on products that were exposed to contaminants that may not be returned to CAMPBELL SCIENTIFIC, INC. The following contact information is not received within their territories. To obtain a Returned Materials Authorization (RMA), contact CAMPBELL SCIENTIFIC, INC., phone (435) 753-2342. Affiliate companies handle repairs for special, indirect, incidental, or consequential...
KH20 Krypton Hygrometer
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... Parts and Tools Needed for links to the printed version of KH20 A-1 Figures 1. Datalogger Programming 6 5.1 KH20 Calibration 6 5.2 Example 1, CR3000 Program to the electronics box 5 A-1. Proper mounting position of KH20 10 6.5 Older KH20 10 6.6 Calibration 10 Appendix A. Vapor Density A-2 i Mounting KH20 onto a tripod 3 2. Attaching cables to Measure Water Vapor Fluctuations......7 6. Specifications 1 2.1 Measurements 1 2.2 Electrical 1 2.3 Physical...2 3. General Description 1 2. Wiring 5 5. KH20 Table of Contents PDF viewers note: These page numbers...
... Parts and Tools Needed for links to the printed version of KH20 A-1 Figures 1. Datalogger Programming 6 5.1 KH20 Calibration 6 5.2 Example 1, CR3000 Program to the electronics box 5 A-1. Proper mounting position of KH20 10 6.5 Older KH20 10 6.6 Calibration 10 Appendix A. Vapor Density A-2 i Mounting KH20 onto a tripod 3 2. Attaching cables to Measure Water Vapor Fluctuations......7 6. Specifications 1 2.1 Measurements 1 2.2 Electrical 1 2.3 Physical...2 3. General Description 1 2. Wiring 5 5. KH20 Table of Contents PDF viewers note: These page numbers...
KH20 Krypton Hygrometer
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... with this name since 1985. If a longer cable is included in the air. Specifications 2.1 Measurements Calibration Range: Frequency Response: Operating Temperature Range: 1.7 to 19.5 g/m3 (nominal) 100 Hz -30 to +50°C 2.2 Electrical Supply Voltage: Current Consumption: Power Consumption: Output Signal Range: 10 V to 16 Vdc 20 mA max at 116.49 nm. The KH20 sensor uses a krypton lamp that protects them from moisture...
... with this name since 1985. If a longer cable is included in the air. Specifications 2.1 Measurements Calibration Range: Frequency Response: Operating Temperature Range: 1.7 to 19.5 g/m3 (nominal) 100 Hz -30 to +50°C 2.2 Electrical Supply Voltage: Current Consumption: Power Consumption: Output Signal Range: 10 V to 16 Vdc 20 mA max at 116.49 nm. The KH20 sensor uses a krypton lamp that protects them from moisture...
KH20 Krypton Hygrometer
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... kg) Shipping: 20.15 lbs (9.2 kg) Package Includes: KH20 sensor head with 5' of the Open Path Eddy Covariance System manual for more discussion on siting. 3.2 Mounting 3.2.1 Parts and Tools Needed for latent heat flux measurement in an eddy covariance application, proper...(CSI model CM204 standard) 3. 3/4 inch IPS Aluminum Pipe, 12 inches long (CSI p/n 18048) 4. 3/4" x 1" Nu-rail (CSI p/n 1049) 5. Small Phillips and flat-head screw-drivers 6. 1/2 inch wrench 2 KH20 Krypton Hygrometer 2.3 Physical 3. Please refer to Section 2 Installation and Mounting of cables Power/Signal cable with ...
... kg) Shipping: 20.15 lbs (9.2 kg) Package Includes: KH20 sensor head with 5' of the Open Path Eddy Covariance System manual for more discussion on siting. 3.2 Mounting 3.2.1 Parts and Tools Needed for latent heat flux measurement in an eddy covariance application, proper...(CSI model CM204 standard) 3. 3/4 inch IPS Aluminum Pipe, 12 inches long (CSI p/n 18048) 4. 3/4" x 1" Nu-rail (CSI p/n 1049) 5. Small Phillips and flat-head screw-drivers 6. 1/2 inch wrench 2 KH20 Krypton Hygrometer 2.3 Physical 3. Please refer to Section 2 Installation and Mounting of cables Power/Signal cable with ...
KH20 Krypton Hygrometer
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... the cover all the way up , using a 3/4" x 3/4" Nu-rail (CSI p/n 1017). Gather any loose cables and tie them up , and sliding it out. Mounting KH20 onto a tripod. 3.2.3 Mounting the Electronics Box Mount the electronics box as follows: 1. Mount the KH20 onto the 12" long pipe using cable ties, onto the tripod or tower mast. Mount the 12 inch long pipe (CSI...
... the cover all the way up , using a 3/4" x 3/4" Nu-rail (CSI p/n 1017). Gather any loose cables and tie them up , and sliding it out. Mounting KH20 onto a tripod. 3.2.3 Mounting the Electronics Box Mount the electronics box as follows: 1. Mount the KH20 onto the 12" long pipe using cable ties, onto the tripod or tower mast. Mount the 12 inch long pipe (CSI...
KH20 Krypton Hygrometer
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... the connectors to secure the electronics box onto the back panel. Also make sure that the cables from the back panel of the mounting slot on . NOTE If the electronics box is mounted vertically with an opening pointing downward so that the distance between the KH20 sensor ... of the rain shield. Proper mounting position of the connectors. 3. Mount the rain shield onto the tripod or tower mast using the U-bolt provided. Before mounting the rain shield onto a tripod, first mount the electronics box inside . 4 Align the electronics box, and use the four pan-head screws to...
... the connectors to secure the electronics box onto the back panel. Also make sure that the cables from the back panel of the mounting slot on . NOTE If the electronics box is mounted vertically with an opening pointing downward so that the distance between the KH20 sensor ... of the rain shield. Proper mounting position of the connectors. 3. Mount the rain shield onto the tripod or tower mast using the U-bolt provided. Before mounting the rain shield onto a tripod, first mount the electronics box inside . 4 Align the electronics box, and use the four pan-head screws to...
KH20 Krypton Hygrometer
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... the two pan-head screws to the CR1000, CR3000, and CR5000. If there is not enough room for Differential Measurement Function Wire Color KH20 Signal + White KH20 Signal - *Black KH20 Power + Red KH20 Power - Attaching cables to the bottom of the electronics box around the U-bolt, make sure the electronics box is shipped with a power/signal cable with user supplied wire Clear CR1000/CR3000/CR5000 Differential Input (H) Differential Input (L) 12V G 5
... the two pan-head screws to the CR1000, CR3000, and CR5000. If there is not enough room for Differential Measurement Function Wire Color KH20 Signal + White KH20 Signal - *Black KH20 Power + Red KH20 Power - Attaching cables to the bottom of the electronics box around the U-bolt, make sure the electronics box is shipped with a power/signal cable with user supplied wire Clear CR1000/CR3000/CR5000 Differential Input (H) Differential Input (L) 12V G 5
KH20 Krypton Hygrometer
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... signals can be chosen from the collected calibration data: full range, dry range, and wet range. The calibration is made : • Will the windows be used. 6 Table 2 shows a sample of the KH20 vapor ranges over a vapor range of the site is unknown, or if the vapor range is on the traditional Edlog dataloggers. 5.1 KH20 Calibration Each KH20 is entered into the datalogger program for the full range. Using the...
... signals can be chosen from the collected calibration data: full range, dry range, and wet range. The calibration is made : • Will the windows be used. 6 Table 2 shows a sample of the KH20 vapor ranges over a vapor range of the site is unknown, or if the vapor range is on the traditional Edlog dataloggers. 5.1 KH20 Calibration Each KH20 is entered into the datalogger program for the full range. Using the...
KH20 Krypton Hygrometer
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... data into a data table called 'ts_data'. KH20 Krypton Hygrometer 5.2 Example 1, CR3000 Program to find the locations of these constants 'and enter the appropriate values found from the calibration sheet of the KH20. '*** Unit Definitions *** 'Units Units 'ln_mV ln(mV) (natural log of the KH20 millivolts) 'mV millivolts 'rho_w g/m^3 '*** Wiring *** 'ANALOG INPUT '1H KH20 signal+ (white) '1L KH20 signal- (black) 'gnd KH20 shield (clear) 'EXTERNAL POWER SUPPLY 'POS KH20 power+ (red) ' datalogger POWER IN 12 (red) 'NEG KH20 power- (black) ' KH20 power...
... data into a data table called 'ts_data'. KH20 Krypton Hygrometer 5.2 Example 1, CR3000 Program to find the locations of these constants 'and enter the appropriate values found from the calibration sheet of the KH20. '*** Unit Definitions *** 'Units Units 'ln_mV ln(mV) (natural log of the KH20 millivolts) 'mV millivolts 'rho_w g/m^3 '*** Wiring *** 'ANALOG INPUT '1H KH20 signal+ (white) '1L KH20 signal- (black) 'gnd KH20 shield (clear) 'EXTERNAL POWER SUPPLY 'POS KH20 power+ (red) ' datalogger POWER IN 12 (red) 'NEG KH20 power- (black) ' KH20 power...
KH20 Krypton Hygrometer
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... batt_volt Public kh(2) Public rho_w Alias kh(1) = kh_mV Alias kh (2) = ln_kh Units panel_temp = deg_C Units batt_volt = volts Units kh_mV = mV Units ln_kh = ln_mV Units rho_w = g/m^3 '*** Data Output Tables *** 'Processed data DataTable (stats,True,-1) DataInterval (0,OUTPUT_INTERVAL,Min,10) Minimum (1,batt_volt,FP2,False,False) Average (1,panel_temp,FP2,False) Average (2,kh(1),IEEE4,False) EndTable 'Raw time-series data. PanelTemp (panel_temp,250) 'Measure battery voltage.
... batt_volt Public kh(2) Public rho_w Alias kh(1) = kh_mV Alias kh (2) = ln_kh Units panel_temp = deg_C Units batt_volt = volts Units kh_mV = mV Units ln_kh = ln_mV Units rho_w = g/m^3 '*** Data Output Tables *** 'Processed data DataTable (stats,True,-1) DataInterval (0,OUTPUT_INTERVAL,Min,10) Minimum (1,batt_volt,FP2,False,False) Average (1,panel_temp,FP2,False) Average (2,kh(1),IEEE4,False) EndTable 'Raw time-series data. PanelTemp (panel_temp,250) 'Measure battery voltage.
KH20 Krypton Hygrometer
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... light. If you see a discoloration on to minimize the prolonged exposure to pool up on the tube window and blocks the signal, you may suspect that the cable has water damage. 6.2 Testing the Source Tube The source tube is the longer of the two tubes. The current drain of time when the KH20 is emitted from Campbell Scientific...
... light. If you see a discoloration on to minimize the prolonged exposure to pool up on the tube window and blocks the signal, you may suspect that the cable has water damage. 6.2 Testing the Source Tube The source tube is the longer of the two tubes. The current drain of time when the KH20 is emitted from Campbell Scientific...
KH20 Krypton Hygrometer
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... swab. For more information on the calibration process, refer to measure an absolute concentration of water vapor, because of scaling on the source tube windows caused by disassociation of the measured data, Campbell Scientific, Inc. Thus, water vapor fluctuation measurements can use the water vapor absorption coefficient for repair. 6.4 Managing the Scaling of KH20 The KH20 cannot be allowed to...
... swab. For more information on the calibration process, refer to measure an absolute concentration of water vapor, because of scaling on the source tube windows caused by disassociation of the measured data, Campbell Scientific, Inc. Thus, water vapor fluctuation measurements can use the water vapor absorption coefficient for repair. 6.4 Managing the Scaling of KH20 The KH20 cannot be allowed to...
KH20 Krypton Hygrometer
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...KH20 over a full calibration vapor range. Calibrating KH20 A.1 Basic Measurement Theory The KH20 uses an empirical relationship between the natural log of the absorbing material, ρ. According to the product of the absorption coefficient of the material, k, the distance the light travels, x, and the density of the KH20 measurement output... after passing through which the light travels. Figure A-1 shows the plot of water vapor, kw. As the light travels through the air, both sides, and solving for water, kw are absorbed by measuring the signal output, V, from the equation A-4 ...
...KH20 over a full calibration vapor range. Calibrating KH20 A.1 Basic Measurement Theory The KH20 uses an empirical relationship between the natural log of the absorbing material, ρ. According to the product of the absorption coefficient of the material, k, the distance the light travels, x, and the density of the KH20 measurement output... after passing through which the light travels. Figure A-1 shows the plot of water vapor, kw. As the light travels through the air, both sides, and solving for water, kw are absorbed by measuring the signal output, V, from the equation A-4 ...
KH20 Krypton Hygrometer
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..., along with the window scaled. If the vapor range for the full range. Campbell Scientific, Inc. Table A-2 shows the final calibration values A-2 We then break up the vapor density range into equation A-3, we... between the dry and the wet ranges, use the value for the site is unknown, or if the vapor range is the product of the absorption ...is recommended that you know the vapor density range for your site, the dry range or the wet range. Table A-1 below shows the result of water vapor, kw, and the KH20 path length, x. Calibrating KH20 KH2O Output (mV) 8 7.5 7 6.5 6 ...
..., along with the window scaled. If the vapor range for the full range. Campbell Scientific, Inc. Table A-2 shows the final calibration values A-2 We then break up the vapor density range into equation A-3, we... between the dry and the wet ranges, use the value for the site is unknown, or if the vapor range is the product of the absorption ...is recommended that you know the vapor density range for your site, the dry range or the wet range. Table A-1 below shows the result of water vapor, kw, and the KH20 path length, x. Calibrating KH20 KH2O Output (mV) 8 7.5 7 6.5 6 ...
KH20 Krypton Hygrometer
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TABLE A-2. Final Calibration Values for KH20 Full Range Dry Range Wet Range Vapor Range (g/m3) 1.74 ~ 19.25 1.74 ~ 9.20 7.95 ~ 19.25 Slope (xkw) -0.205 -0.216 -0.201 Y Intercept ln (V0) 3087 3259 2899 Coefficient (kw) -0.144 -0.151 -0.141 A-3 Calibrating KH20 the KH20 calibration certificate contains. The data shown in Table A-2 is from an actual KH20. Appendix A.
TABLE A-2. Final Calibration Values for KH20 Full Range Dry Range Wet Range Vapor Range (g/m3) 1.74 ~ 19.25 1.74 ~ 9.20 7.95 ~ 19.25 Slope (xkw) -0.205 -0.216 -0.201 Y Intercept ln (V0) 3087 3259 2899 Coefficient (kw) -0.144 -0.151 -0.141 A-3 Calibrating KH20 the KH20 calibration certificate contains. The data shown in Table A-2 is from an actual KH20. Appendix A.