Chapter 11 _____________________________________________________Technical Specifications
VAISALA________________________________________________________________________ 87
Rain duration
counting each 10-second increment whenever
droplet detected
Ouput Resolution
10 s
Rain intensity
running one minute average in 10-second steps
Range
0...200 mm/h (broader range with reduced accuracy)
Units available
mm/h, in/h
Hail
cumulative amount of hits against collecting surface
Output resolution
0.1 hits /cm
2
(1 hits/ in
2
), hits
Units available
hits /cm
2
, hits/ in
2
, hits
Hail duration
counting each 10 second increment whenever
hailstone detected
Ouput resolution
10 s
Hail intensity
one minute running average in 10-second steps
Output resolution
0.1 hits/ cm
2
h (1 hits/ in
2
h)
Units available
hits/cm
2
h, hits/ in
2
h, hits/h
Inputs and outputs
Operation voltage
5
*
...30 VDC
*) Below 5.3V the measurement performance for high wind speeds may be degraded.
Average power consumption
minimum
0.07 mA @ 12VDC (SDI-12)
maximum
13 mA @ 30 VDC (constant measurement of all
parameters)
typical
3 mA @ 12 VDC (with default measuring intervals)
Heating voltage
options: DC, AC, full-wave rectified AC
recommended ranges
12 VDC
±
20 %, 1.1 A max
24 VDC
±
20 %, 0.6 A max
68 V
p-p
±
20 % (AC), 0.6 A
rms
max
34 V
p
±
20 % (f/w rect. AC), 0.6 A
rms
max
absolute max
30 VDC
84 V
p-p
(AC)
42 V
p
(f/w rect. AC)
