User's Guide _______________________________________________________________________
42____________________________________________________________________ M210543EN-B
Weather Parameters
PWD22 has also several changeable parameters, which control the
operation of the present weather algorithm and precipitation
measurement. The parameter values set at the factory have been tested
and found appropriate. Thus, they usually do not need to be changed.
There may, however, be conditions where other parameter values give
better results.
The commands for displaying and changing the parameters are listed
in Table 10 below.
Table 10
Commands for Displaying and Changing
Parameters
Operation
Command
Parameter listing
WPAR
Parameter setting
WSET
Local practice may require changes, especially in the precipitation
intensity limits (moderate, heavy). See section WSET on page 68 for a
description of the WSET command.
The precipitation intensity and amount measurement is not calibrated
at the factory. Higher accuracy can be achieved by adjusting a scaling
factor (RAIN INTENSITY SCALE) with the WSET command. The
new scaling factor can be calculated by comparing PWD22 against a
reference rain gauge. See section WSET on page 68 for a description
of the WSET command, and for further instructions.
The low visibility alarm limits (3) are zero by default, in other words,
no alarms will be generated or relays activated. The alarm limits can
be set in the CONF command.
