Campbell Scientific PWS100 Present Weather Sensor - Manual (Page 81)

Section 7. Operation
7.8.3 Running the Calibration
The detection volume is calibrated using the PWC100 calibrator. The
calibration fixture plate which holds the calibration unit is mounted in place on
the top of the sensor boss.
The PWC100 calibrator runs automatically when the start button is pressed and
will provide values for the PWS calibration as shown in Section 7.4.3 and
Figure 7-20. Normally, the PWC100 calibrator is only used as a check device
in the field. It can be used to adjust the calibration of the system, if desired, as
detailed in Section 7.4.3.
Please refer to the PWC100 calibrator manual for further details of operation of
the PWC100 calibrator and the procedure for calibration of the PWS100.
7.8.4 Rotating the Calibration Disc
The command RUNDISC n will start the disc of the PWS Calibrator (if
connected) rotating at a speed n = ms
-1 . To start the disc spinning type the
following:
RUNDISC n ↵
where n is a number between 0.0 and 7.0. The user can then use this
command to test or demonstrate the PWS functions. Using the command
RUNDISC without any parameter (i.e., n = 0.0) will stop the disc.
7.9 Other Commands
7.9.1 Setting the Time and Date
The time and date of the system can be observed by using the TIME command
as follows:
TIME ↵
yyyy/mm/dd hh:mm:ss
To change the system time and date then the command requires the time and
date in the correct format as follows:
TIME yyyy/mm/dd hh:mm:ss ↵
Where, in the order shown in the command above, yyyy is the year, mm is the
month of the year, dd is the day of the month, hh are the hours (24 hour clock),
mm are the minutes, ss are the seconds. Leading zeros on the values are not
necessary however the colons (:) and forward slashes (/) are required and a
space is required between the day and the hour.
It is possible to set just the date or the time independently of the other. To set
just the date without altering the time the following should be used:
TIME yyyy/mm/dd ↵
7-45