Vaisala LT31, Руководство пользователя

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User's Guide ______________________________________________________________________
272 _________________________________________________________________ M210667EN-C
T30:Transmitter
Main Transmitter
LTL112;
temperature sensor
error
T31:Transmitter
Optics Unit LTO112;
alignment
mechanism
horizontal error
T32:Transmitter
Optics Unit LTO112;
alignment
mechanism vertical
error
The Transmitter Measurement
CPU has detected out of range
values for the appropriate axis. Check for proper cabling at the transmitter
optics unit.
Check for firm fit of eccentric elements to
gear motor axis and variable resistor axis.
T33:Transmitter
Measurement Unit
LTM112; heater error The heater in the Transmitter
Measurement CPU is unable to
create the desired temperature
difference between window and
enclosure temperature sensor. Check for proper cabling between
Transmitter Measurement CPU and heating
elements.
T34:Transmitter Unit
LTT111; not
responding Transmitter Unit does not respond
to LT31 system polling request Check whether all the Transmitter Unit lines
are connected properly.
Check whether all connections concerning
the RS-485 Module Bus are connected
properly.
T35:Transmitter Unit
LTT111; unknown Any Transmitter Unit Module has
been changed since last Offset
and Visibility Calibration. Perform an Offset and Visibility Calibration
(see section Offset and Visibility Calibration
on page 234).
T36:Transmitter Main
Transmitter LTL112;
DC high
T37:Transmitter Main
Transmitter LTL112;
saturated
A light source other than the
modulated transmitter signal is
detected by the Main Transmitter
monitor measurement. Either the
signal is detected as high (T36) or
the receiver is saturated (T37). Try to identify an additional light source of
any nature that might be in sight of the Main
Transmitter. Try to eliminate the influence