Vaisala AWS330 - Manual (Page 256)

User's Guide ______________________________________________________________________
254 _________________________________________________________________ M211296EN-B
Sensors
Snow Depth Sensor IRU-9429
Table 94 Ultrasonic Snow Depth Sensor IRU-9429 Specifications
Property Description/Value
Operating range
0.15 ... 10.67 m (½ ... 35 ft.)
Available outputs 4–20 mA, 4–20 mA + (2) NPN,
0–2.5V/0–5V (selectable via software)
Operating voltage 12–28 VDC
Programming voltage 15–28 VDC
Total current draw 75 mA at 24 VDC
Maximum power rating 2.5 W
Housing Polycarbonate/PET blend
Transducer type Electrostatic
Ratings NEMA 12
Resolution 2.5 mm (0.1 inch)
Operating temperature -40 to 60 °C (-40 to +140 °F)
Frequency 50 kHz
Pyranometer CMP6
Table 95 Pyranometer CMP6 Specifications
Property Description/Value
ISO classification
First class
Response time (95%) 18 s
Zero offsets:
- Thermal radiation
(200 W/m
2 )
- Temperature change
(5 K/hr)
±15 W/m
2
±4W/m
2
Non-stability (change/year) ±1%
Non-linearity (0 to
1000 W/m
2 beam)
±1%
Directional error (at 80 °
with 1000 W/m
2 beam)
20 W/m 2
Temperature dependence of
sensitivity ±4% (-10 ... +40 °C)
Tilt error (at 1000 W/m 2 ) ±1%
Other
Sensitivity
5 ... 16 μV/W/m 2
Impedance 20 ... 200 Ω
Level accuracy 0.5 °
Operating temperature -40 ... +80 °C
Spectral range (50% points) 310 ... 2800 nm
Typical signal output for
atmospheric applications
0 ... 15 mV
Maximum irradiance 2000 W/m 2
Cable 10 m