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VAISALA___________________________________________________________5
Figure 2 Mounting LM21 on the Option Support Arm of FS1118
Figure 3 Installation and Cabling of LM21.............................20
Figure 4 Wiring of LM21 to FS11 ..........................................21
Figure 5 Cable Grounding Instruction ...................................22
Figure 6 Exploded View of LM21 Background Luminance
Sensor ....................................................................28
Figure 7 Mounting the LMA21 Field Calibrator into the LM21
Hood .......................................................................38
Figure 8 Connecting the LMA21 Field Calibrator to the LM2139
Figure 9 LMA21 Indicator Lights ...........................................40
Figure 10 Removing the LMM101 Assembly ..........................43
Figure 11 Connecting the Signal and Power Cable into
LMM101..................................................................44
Figure 12 Removing the LMB201 and LM211246 Units .........47
Figure 13 Mounting the LMB201 Board onto the Optics Holding
Assembly ................................................................48
List of Tables
Table 1 Manual Revisions......................................................8
Table 2 Related Manuals.......................................................8
Table 3 Definitions for Illumination Terms............................14
Table 4 Background Luminance Values in Relation to the
Human Eye .............................................................15
Table 5 LM21 Nomenclature................................................16
Table 6 Default Factory Settings..........................................26
Table 7 Error Messages.......................................................51
Table 8 Alarm Messages .....................................................52
Table 9 Indication Messages ...............................................53
Table 10 Miscellaneous Problems, Causes, and Remedies..54
Table 11 Mechanical Specifications.......................................57
Table 12 Operational Specifications ......................................58
Table 13 Optical Specifications..............................................58
Table 14 Electrical Specifications ..........................................58
Table 15 Environmental Specifications..................................59
Table 16 LM21 CE-Compliance.............................................59