Campbell CS125, Инструкция по эксплуатации

Страница: 51 / 76

User Guide
41
Menu 9 and 0: Exiting the menu system
Options `9’ and `0’ exit from the menu system. Note that typing `0’ will lose all
changes made including communications settings.
16. Calibrating the CS125
16.1 Visibility calibration
The CS125 can be checked and adjusted using the optional CS125 high grade
calibration kit part number 010815. The calibration must be run using the
onboard menu system. If you have Campbell Scientific’s Device configuration
program a terminal emulation screen is provided in the CS125 screens to let you
access this function. To perform the calibration you will need a CS125 calibrator
disk and a computer with a standard serial port compatible with the CS125. If
your CS125 is not currently configured for RS232 communications you can set
the internal switch, switch three, to temporarily set the sensor to RS232 mode
38400 bps. If the sensor is already set in RS232 mode it should not be necessary
to change any internal switches. (See Section 10 for more information on the
CS125 internal switches.)
The test should ideally be performed in the following conditions:

Ambient temperature should be between 0ºC and 50ºC
 The local visibility should be approximately 10,000 metres or higher.
The system is self-regulating. However, it is recommended that the CS125 is
calibrated at least every two years.
The calibration is performed from menu item 3 on the main terminal screen.
Please refer to the menu section (Section 13) of this manual for further
information on how to access this menu.
Once you have selected menu item 3 you should be presented with the following
screen.
CS125 CALIBRATION - MENU 3
ID 0
S/N 1006
(1) Perform calibration
(2) Restore the factory calibration
(3) Perform dirty windows zero offset calibration
(4) Restore dirty windows factory calibration
(9) Refresh
(0) Return to main menu
Select option 1 to start the calibration. You will then be asked to confirm that you
would like to perform a calibration. Please note, once you have entered yes at this
CAMPBELL SCIENTIFIC LTD CS125 menu exited.