Vaisala FD12P - Manual (Page 7)

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VAISALA _________________________________________________________________________ 7
Calibrating FD12P Weather Sensor after Unit
Replacement ................................................................130
CHAPTER 7
TROUBLESHOOTING................................................................................133
Warnings ...............................................................................133
Troubleshooting Examples..................................................133
Message Indicating Warning or Alarm .............................133
Message Missing...............................................................134
Visibility Value is Missing...................................................135
Visibility Value is Continuously Too Good.........................135
Visibility is Constantly Too Low .........................................136
FDP12 Reports Precipitation When There Is None...........136
FD12P Reports Frozen Precipitation during Rain .............136
Have Jumper Settings Been Changed? ............................137
Values for Internal Monitoring.............................................137
Getting Help ..........................................................................140
Return Instructions...............................................................140
APPENDIX A
NWS AND WMO CODES USED IN FD12P ...............................................143
The NWS Codes ....................................................................143
APPENDIX B
JUMPER SETTINGS AND INTERNAL WIRING........................................147
CPU Board.............................................................................149
DC-Regulator.........................................................................149
DRI21 Interface Board ..........................................................149
APPENDIX C
TRANSMITTER AND RECEIVER TEST POINTS .....................................151
INDEX .........................................................................................................153
List of Figures
Figure 1 FD12P Weather Sensor Site ....................................................18
Figure 2 DRD12 Rain Detector and DTS14B Temperature Sensor .......19
Figure 3 FD12P Block Diagram ..............................................................21
Figure 4 Recommended Location for the FD12P ...................................31
Figure 5 FD12P Equipment Grounding ..................................................33
Figure 6 Casting a Concrete Foundation................................................37
Figure 7 Constructing the FD12P Foundation ........................................39
Figure 8 Tilting the Pole Mast .................................................................41
Figure 9 DTS14B and the Sensor Holder Assembly to Mast .................42
Figure 10 Connecting Internal Grounding.................................................43
Figure 11 Cabling Principle.......................................................................44
Figure 12 Line Voltage and ON/OFF Switches.........................................45
Figure 13 Electronics Enclosure Feedthroughs........................................46
Figure 14 Cable Grounding Instructions ...................................................47