Campbell Scientific CS125 Present Weather Sensor - Manual (Page 43)

User Guide
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The sensor power down voltage shown before the supply voltage is only available
if the sensor is running firmware version 4 or later and only functional for sensors
with serial number greater than E1029.
Menu 5: The communication menu
The communications menu is used to set baud rates and the mode of operation
(RS232/RS485).
No change will take effect until you `exit and save’.
Menu 6: Configuration
This menu sets dew and hood heaters to automatic or off, dirty window
compensation and CRC checking. In addition it allows the sensor power down
voltage to be set. If set this will shut down the CS125 before the battery voltage
has fallen low enough to damage a back-up battery. The RH threshold can also be
set from this menu. This applies if a CS215 sensor is attached and defined the
level of RH below which obscuration is deemed to be dry (that is haze, SYNOP
04 or 05, METAR HZ) rather than wet (mist, SYNOP 10, METAR BR or fog,
SYNOP 30 etc. METAR FG).
NOTE
CS125 COMMUNICATIONS - MENU 5
ID 0
S/N 1009
(1) Set sensor ID
(2) Set RS232/RS485 baud rate:38400
(3) Toggle RS232/RS485 modes:RS232
(9) Refresh
(0) Return to main menu
->
CS125 CONFIGURATION - MENU 6
ID 0
S/N 1003
(1) Dew heater override:
AUTOMATIC
(2) Hood heater override: AUTOMATIC
(3) Dirty window compensation: NO COMPENSATION
(4) Command line CRC Checking: DO NOT CHECK
(5) Sensor power down voltage: 7.0V
(6) RH threshold: 80%
(9) Refresh
(0) Return to main menu
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