User's Guide ______________________________________________________________________254 _________________________________________________________________ M211296EN-ASensorsSnow Depth Sensor IRU-9429Table 92 Ultrasonic Snow Depth Sensor IRU-9429 SpecificationsProperty Description/ValueOperating 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 VDCProgramming voltage 15–28 VDCTotal current draw 75 mA at 24 VDCMaximum power rating 2.5 WHousing Polycarbonate/PET blendTransducer type ElectrostaticRatings NEMA 12Resolution 2.5 mm (0.1 inch)Operating temperature -40 to 60 °C (-40 to +140 °F)Frequency 50 kHzPyranometer CMP6Table 93 Pyranometer CMP6 SpecificationsProperty Description/ValueISO classification First classResponse time (95%) 18 sZero offsets:- Thermal radiation(200 W/m 2)- Temperature change(5 K/hr)±15 W/m2±4W/m2Non-stability (change/year) ±1%Non-linearity (0 to1000 W/m2 beam)±1%Directional error (at 80 °with 1000 W/m 2 beam)20 W/m2Temperature dependence ofsensitivity±4% (-10 ... +40 °C)Tilt error (at 1000 W/m 2) ±1%OtherSensitivity 5 ... 16 μV/W/m2Impedance 20 ... 200 ΩLevel accuracy 0.5 °Operating temperature -40 ... +80 °CSpectral range (50% points) 310 ... 2800 nmTypical signal output foratmospheric applications0 ... 15 mVMaximum irradiance 2000 W/m 2Cable 10 m
