Vaisala FD12P User Manual
Page 74
User's Guide _______________________________________________________________________
74
______________________________________________________ M210296en-A
Type
WSET
↵
and the output is as follows:
SET PRESENT WEATHER PARAMETERS
PRECIPITATION LIMIT
(
40)
WEATHER UPDATE DELAY (
6)
HAZE LIMIT
( 9000)
RAIN INTENSITY SCALE ( 0.80)
VIOLENT RAIN LIMIT
(
50)
HEAVY RAIN LIMIT
(
8)
LIGHT RAIN LIMIT
(
2)
DRIZZLE LIMIT
(
15)
HEAVY DRIZZLE LIMIT
(
30)
LIGHT DRIZZLE LIMIT
(
3)
SNOW LIMIT
(
5.0)
HEAVY SNOW LIMIT
(
600)
LIGHT SNOW LIMIT
( 1200)
SNOW PELLETS LIMIT
(
30)
SNOW GRAINS LIMIT
(
20)
ICE CRYSTALS LIMIT
(
40)
HAIL LIMIT
(
300)
DRD SCALE
(
1.5)
WARM LIMIT
(
8.0)
The parameters are described in detail below.
Precipitation Limit
The Precipitation limit parameter is the threshold of accumulated
particle magnitudes (in FD12P internal units) that reports the
precipitation on state. The typical parameter value is 40. The smaller
value represents a more sensitive operation and faster response at the
beginning of an event.
Weather Update Delay
The Weather update delay parameter is a time as multiple of 15
seconds, during which the instant precipitation type is not changed.
The intensity may change faster.
Haze Limit
The Haze limit parameter specifies the visibility threshold for
reporting haze or mist. When the visibility is between 1000 m and the
Haze limit, the FD12P will report either haze or mist depending on the
air humidity.