Vaisala LT31 User Manual

User's Guide ______________________________________________________________________
6 ___________________________________________________________________ M210667EN-C
Alignment .....................................................................159
Calibration ....................................................................159
Linearity Test................................................................159
Simulation.....................................................................159
PWD Sensor.................................................................160
Service..........................................................................160
Events...........................................................................160
Message Formats .................................................................161
MESSAGE Command .......................................................162
Message 1 - LT31 Standard Message ..............................162
Status Codes................................................................164
LT31 System ...........................................................164
Message 2 - LT31 Message Including PW Data
(optional)............................................................................174
Message 3 - Status Message............................................175
Message 4 - Vaisala System Standard Message .............176
Message 5 and 6 - FD12 Emulation..................................177
Message 5 - FD12 Message 2 .....................................177
Message 6 - FD12 Message 7 .....................................178
Message 7 - MITRAS Emulation.......................................179
Message 8 - Flamingo Emulation......................................180
Message 9 - Service Raw Values .....................................181
Message Sending Modes..................................................181
Automatic Mode ...........................................................181
Polled Mode .................................................................182
METAR Messaging............................................................183
System Configuration ..........................................................184
Default Factory Settings ....................................................185
External Sensors (Optional) ..............................................186
Background Luminance Sensor LM21.........................186
RVR System Test Commands .............................................186
Fixed Test Messages ........................................................187
Message 1....................................................................187
Message 2....................................................................187
Message 4....................................................................187
Message 5 - FD12 Message 2 Emulation....................187
Message 6 - FD12 Message 7 Emulation....................188
Message 7 - MITRAS Emulation..................................188
Message 8 - SKOPOGRAPH II Flamingo....................188
Manual Simulation Message .............................................188
Simulation Sequences.......................................................189
Message 1...............................................................191
Message 2...............................................................191
Message 4...............................................................191
Message 7 (MITRAS)..............................................191
Message 8 (SKOPO 2) ...........................................191
CHAPTER 6
MAINTENANCE..........................................................................................193
Periodic Maintenance...........................................................193
Cleaning Instructions.........................................................194
Cleaning LT31 Windows and Weather Protection Hoods.194
Cleaning PWD Forward Scatter Sensor............................195
Cleaning Lenses and Hoods ........................................195
Cleaning RAINCAP
®
....................................................197
Cleaning Window of Optional LM21..................................197

Vaisala LT31 Specifications

General

Brand	Vaisala
Model	LT31
Category	Measuring Instruments
Language	English