Campbell Scientific PWS100 Present Weather Sensor - Manual (Page 48)

Section 7. Operation
The PWS100 only measures particles / visibility 90% of the time
so precipitation intensity is scaled appropriately. NOTE
7.4.1.15 Message Field 41 Precipitation Accumulation
This field will output the precipitation accumulation (mm) calculated over the
Message_Interval defined.
The PWS100 only measures particles / visibility 90% of the time
so precipitation totals are scaled appropriately. NOTE
7.4.1.16 Message Field 42 Drop Size Distribution
This field will output the drop size distribution table which is output as 300
values, starting with the 0 to 0.1 mm bin, in steps of 0.1 mm up to 30 mm. This
is calculated over the Message_Interval defined.
7.4.1.17 Message Field 43 Average Velocity (ms -1 ) and Average Size (mm)
This field will output the average velocity and average size values ignoring any
particle type classifications.
7.4.1.18 Message Field 44 Type Distribution
This field will output the type distribution which is a series of 11 values for
each particle type which shows the number of each type of particle classified.
The order of the output is: drizzle, freezing drizzle, rain, freezing rain, snow
grains, snow flakes, ice pellets, hail, graupel, error, unknown.
7.4.1.19 Message Field 45 Size / Velocity Type Map 1 (20 x 20)
This field will output a size and velocity map with the following classes:
Particle diameter class
Class Diameter [mm] Class width [mm]
*1 =>0.00 0.24
2 =>0.24 0.12
3 =>0.36 0.14
4 =>0.50 0.25
5 =>0.75 0.25
6 =>1.00 0.25
7 =>1.25 0.25
8 =>1.50 0.25
9 =>1.75 0.25
10 =>2.00 0.50
11 =>2.50 0.50
12 =>3.00 0.50
13 =>3.50 0.50
14 =>4.00 0.50
7-12