Vaisala LT31, User Manual, Page: 13 / 294

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VAISALA _______________________________________________________________________ 13
List of Tables
Table 1 Manual Revisions ..................................................................... 16
Table 2 Related Manuals ...................................................................... 16
Table 3 LT31 Transmissometer Nomenclature..................................... 35
Table 4 LT31 Nomenclature for the Options ......................................... 36
Table 5 LT31 Spare Parts ..................................................................... 36
Table 6 LT31 Spare Parts for Options .................................................. 37
Table 7 AC Cable Selection for LT31.................................................... 76
Table 8 Communication Cable Lengths ................................................ 78
Table 9 Default Settings ...................................................................... 136
Table 10 User Level Commands........................................................... 148
Table 11 Advanced Level Commands .................................................. 150
Table 12 Event Log Entry...................................................................... 161
Table 13 Status Codes.......................................................................... 164
Table 14 LT31 Overall Status (Byte Number 21) .................................. 164
Table 15 LT31 MOR Status (Byte Number 22) ..................................... 165
Table 16 LT31 Power Supply (Byte Number 23) .................................. 166
Table 17 LT31 Auto-calibration (Byte Number 24)................................ 166
Table 18 LT31 Window Contamination (Byte Number 25) ................... 166
Table 19 LT31 Alignment (Byte Number 26)......................................... 167
Table 20 LT31 Future Extension 1 (Byte Number 27) .......................... 167
Table 21 LT31 Future Extension 2 (Byte Number 28) .......................... 167
Table 22 LT31 Transmitter Status (Byte Number 29) ........................... 168
Table 23 LT31 Transmitter: Main Transmitter Module
(Byte Number 30) ................................................................... 168
Table 24 LT31 Transmitter: Window Transmitter Module
(Byte Number 31) ................................................................... 169
Table 25 LT31 Transmitter: Measurement CPU (Byte Number 32)...... 169
Table 26 LT31 Transmitter: Miscellaneous (Byte Number 33) ............. 170
Table 27 LT31 Receiver Status (Byte Number 34) ............................... 170
Table 28 LT31 Receiver: Master CPU Status (Byte Number 35) ......... 170
Table 29 LT31 Receiver: Main Receiver Module (Byte Number 36) .... 171
Table 30 LT31 Receiver: Window Transmitter Module
(Byte Number 37) ................................................................... 171
Table 31 LT31 Receiver: Measurement CPU (Byte Number 38).......... 172
Table 32 LT31 Receiver: Miscellaneous (Byte Number 39) ................. 172
Table 33 LT31 PWD Status (Byte Number 40) ..................................... 173
Table 34 Background Luminance Sensor LM21 (optional)
Alarm Status Information (Byte Number 54) .......................... 173
Table 35 Default Factory Parameter Settings ....................................... 186
Table 36 Events..................................................................................... 262
Table 37 Miscellaneous Problems ........................................................ 273
Table 38 LT31 Operational Specifications ............................................ 277
Table 39 LT31 Transmitter Optical Specifications ................................ 278
Table 40 LT31 Receiver Optical Specifications .................................... 278
Table 41 LT31 Electrical Specifications ................................................ 279
Table 42 LT31 Mechanical Specifications............................................. 279
Table 43 LT31 Environmental Specifications........................................ 279
Table 44 LT31 CE Compliance ............................................................. 280