Kipp & Zonen CNR 4, Instruction Manual

Page: 4 / 37

3
CONTENTS
IMPORTANT USER INFORMATION ................................................................................................................................... 1
DECLARATION OF CONFORMITY ..................................................................................................................................... 2
CONTENTS ................................................................................................................................................................................. 3
1 GENERAL INFORMATION ............................................................................................................................................ 4
1.1 Connecting the CNR 4 ............................................................................................................ 5
1.1.1 The difference between temperature and sensor connection ........................................... 5
1.1.2 The radiometer Sensor connector (S) ............................................................................... 5
1.1.3 The radiometer Temperature connector (T) ..................................................................... 7
1.1.4 The (optional) CNF 4 connector ....................................................................................... 8
1.1.5 Using the CNR 4 calibration factors ................................................................................. 8
1.1.6 Using the CNR 4 measuring Net Radiation ....................................................................... 9
1.1.6.1 Measuring Solar radiation with the pyranometer ........................................................................... 9
1.1.6.2 Measuring Far Infrared radiation with the pyrgeometer ................................................................ 9
1.1.6.3 Measuring the CNR 4's body temperature ..................................................................................... 9
1.1.6.4 Calculation of the albedo for solar radiation ............................................................................... 12
1.1.6.5 Calculation of the Net Solar radiation ......................................................................................... 12
1.1.6.6 Calculation of the Net (total) radiation ........................................................................................ 13
2 CNR 4 PROPERTIES ..................................................................................................................................................... 16
2.1 Properties of the CNR 4 Net-Radiometer ............................................................................... 16
2.1.1 Specifications of the CNR 4 ........................................................................................... 17
2.2 Properties of the pyranometer .............................................................................................. 17
2.2.1 Specifications of the pyranometer ................................................................................. 18
2.2.2 Spectral properties of the pyranometer ......................................................................... 20
2.2.3 Directional / Cosine response of the pyranometer ......................................................... 20
2.3 Properties of the pyrgeometer .............................................................................................. 22
2.3.1 Window heating offset .................................................................................................. 22
2.3.2 Water deposition on the pyrgeometer window ............................................................... 22
2.3.3 Specifications of the Pyrgeometer ................................................................................. 22
2.3.4 Spectral properties of the pyrgeometer ......................................................................... 24
2.3.5 Directional / Cosine response of the pyrgeometer ......................................................... 24
2.4 Properties of the CNF 4 (optional) ventilation unit ................................................................ 25
2.4.1 CNF 4 specifications ...................................................................................................... 25
2.5 Properties of the Pt-100 and thermistor ................................................................................ 26
3 CALIBRATION ................................................................................................................................................................ 27
3.1 Calibration of the pyranometers ........................................................................................... 27
3.2 Calibration of the pyrgeometers ........................................................................................... 27
3.3 Recalibration of pyranometers and pyrgeometers ................................................................. 27
3.4 Checking the Pt-100 and Thermistor .................................................................................... 27
4 INSTALLATION AND MAINTENANCE ................................................................................................................... 28
4.1 Replacing the drying cartridge ............................................................................................. 28
4.2 Replacing the Ventilator Filter .............................................................................................. 29
5 TROUBLE SHOOTING .................................................................................................................................................. 30
5.1 Testing the pyranometer ...................................................................................................... 30
5.2 Testing of the pyrgeometer .................................................................................................. 30
5.3 Testing the Pt-100 ................................................................................................................ 31
5.4 Testing the thermistor ......................................................................................................... 31
5.5 Testing the Heater ............................................................................................................... 31
5.6 Testing the Ventilator .......................................................................................................... 31
6 CMB 1 OPTIONAL MOUNTING BRACKET ........................................................................................................... 32
7 DELIVERY ........................................................................................................................................................................ 34
8 RECALIBRATION SERVICE ......................................................................................................................................... 35