5
S u n r i s e a n d S u n s e t
Resolution ......................................................................... 1 minute
Accuracy ........................................................................... ±1 minute
Reference ......................................................................... United States Naval Observatory
T e m p e r a t u r e
Inside Temperature (sensor located in console)
Resolution and Units.................................................. Current Data: 0.1°F or 1°F or 0.1°C or 1°C (user-selectable)
Historical Data and Alarms: 1°F or 1°C (user-selectable)
Range........................................................................ +32° to +140°F (0° to +60°C)
Sensor Accuracy........................................................ ±1°F (±0.5°C)
Update Interval .......................................................... 1 minute
Current Data .............................................................. Instant Reading (user adjustable); Daily, Monthly, Yearly High and
Low
Historical Data ........................................................... Hourly Readings; Daily and Monthly Highs and Lows; Highs and Lows
for Last 25 Days; Temp change per hour, Temp change for last 24
hours.
Alarms ....................................................................... High and Low Thresholds from Instant Reading
Outside Temperature (sensor located in ISS)
Resolution and Units.................................................. Current Data: 0.1°F or 1°F or 0.1°C or 1°C (user-selectable) nominal
(see Fig. 1) Historical Data and Alarms: 1°F or 1°C (user-selectable)
Range........................................................................ -40° to +150°F (-40° to +65°C)
Sensor Accuracy........................................................ ±1°F (±0.5°C) above +20°F (-7°C); ±2°F (±1°C) under +20°F (-7°C)
(see Fig. 2)
Radiation Induced Error (Passive Shield) ................... +4°F (2°C) at solar noon (insolation = 1040 W/m
2
, avg. wind speed
2 mph (1 m/s)) (reference: RM Young Model 43408 Fan-Aspirated
Radiation Shield)
Update Interval .......................................................... 10 to 12 seconds
Current Data .............................................................. Instant Reading (user adjustable); Daily, Monthly, Yearly High and
Low
Historical Data ........................................................... Hourly Readings; Daily, Monthly, Yearly Highs and Lows
Alarms ....................................................................... High and Low Thresholds from Instant Reading
U l t r a V i o l e t ( U V ) R a d i a t i o n I n d e x (
r e q u i r e s V a n t a g e P r o 2 I S S w i t h U V s e n s o r )
Resolution and Units ......................................................... 0.1 Index
Range ............................................................................... 0 to 16 Index
Accuracy ........................................................................... ±5% of full scale (Reference: Yankee UVB-1 at UV index of 10
(Extremely High))
Cosine Response .............................................................. ±4% (0° to 65° incident angle); 9% (65° to 85° incident angle)
Update Interval.................................................................. 50 seconds to 1 minute (5 minutes when dark)
Current Data ..................................................................... Instant Reading
W i n d
Wind Chill (Calculated)
Resolution and Units.................................................. 1°F or 1°C (user-selectable)
Range........................................................................ -110° to +135°F (-79° to +57°C)
Accuracy.................................................................... ±2°F (±1°C) (typical)
Update Interval .......................................................... 10 to 12 seconds
Source ....................................................................... United States National Weather Service (NWS)/NOAA
Equation Used ........................................................... Osczevski (1995) (adopted by US NWS in 2001)
Variables Used .......................................................... Instant Outside Temperature and 10-min. Avg. Wind Speed
Current Data .............................................................. Instant Calculation; Hourly, Daily, Monthly, Yearly Low
Historical Data ........................................................... Hourly, Daily and Monthly Lows
Alarm ......................................................................... Low Threshold from Instant Calculation
Wind Direction
Display Resolution ..................................................... 16 points (22.5°) on compass rose, 1° in numeric display
Range........................................................................ 0-360°
Accuracy.................................................................... ±3°
Update Interval .......................................................... 2.5 to 3 seconds
Current Data .............................................................. Instant Reading (user adjustable); 10-min. Dominant; Hourly, Daily,
Monthly Dominant
Historical Data ........................................................... Past 6 10-min. Dominants on compass rose only; Hourly, Daily,
