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Barometric Pressure (sensor located in Envoy)
Resolution and Units . . . . . . . . . .0.01" Hg, 0.1 mm Hg, 0.1 hPa/mb (user-
selectable)
Corrected Range. . . . . . . . . . . . .26.00" to 32.00" Hg, 660.0 to 810.0 mm Hg,
880.0 to 1080.0 hPa/mb
Uncorrected Range . . . . . . . . . . .18.00" to 33.50" Hg, 457.0 to 850.0 mm Hg,
592.0 to 1130.0 hPa/mb
Elevation Range . . . . . . . . . . . . .-1500' to +15,300' (-460 m to 4670 m)
Uncorrected Reading Accuracy . .±0.03" Hg (±0.8 mm Hg, ±1.0 hPa/mb) (at
room temperature)
Sea-Level Reduction Equation . .United States Method employed prior to use
of current “R Factor” method
Equation Source . . . . . . . . . . . . .Smithsonian Meteorological Tables
Equation Accuracy . . . . . . . . . . .±0.01" Hg (±0.3 mm Hg, ±0.3 hPa/mb)
Elevation Accuracy Required. . . .±10’ (3m) to meet equation accuracy
specification
Overall Accuracy. . . . . . . . . . . . .±0.04" Hg (±1.0 mm Hg, ±1.4 hPa/mb)
Trend (change in 3 hours) . . . . . .Change ±0.6" (2 hPa/mb, 1.5 mm Hg) =
Rapidly
Change ±0.2" (.7hPa/mb, 0.5 mm Hg)= Slowly
Trend Indication . . . . . . . . . . . . .5 position arrow: Rising (rapidly or slowly),
Steady, or Falling (rapidly or slowly)
Update Interval . . . . . . . . . . . . . .1 minute
Current Data . . . . . . . . . . . . . . . .Instant, 15-min., and Hourly Reading; Daily,
Monthly, High and Low
Historical Data. . . . . . . . . . . . . . .15-min. and Hourly Reading; Daily, Monthly
Highs and Lows
Alarms. . . . . . . . . . . . . . . . . . . . .High Threshold from Current Trend for Storm
Clearing (Rising Trend
Low Threshold from Current Trend for Storm
Warning (Falling Trend)
Rising and Falling Alarms . . . . . .0.01 to 0.25" Hg (0.1 to 6.4 mm Hg, 0.1 to
8.5 hPa/mb)
Inside Relative Humidity (sensor located in Envoy)
Range . . . . . . . . . . . . . . . . . . . . .1 to 100% RH
Accuracy . . . . . . . . . . . . . . . . . . .±5%
Update Interval . . . . . . . . . . . . . .1 minute
Current Data . . . . . . . . . . . . . . . .Instant (user adjustable) and Hourly Reading;
Daily, Monthly High and Low
Historical Data. . . . . . . . . . . . . . .Hourly Readings; Daily, Monthly Highs and
Lows
Alarms. . . . . . . . . . . . . . . . . . . . .High and Low Threshold from Instant Reading
Clock
Resolution. . . . . . . . . . . . . . . . . .1 minute
Units . . . . . . . . . . . . . . . . . . . . . .Time: 12 or 24 hour format (user-selectable)
Date: US or International format (selectable)
Accuracy . . . . . . . . . . . . . . . . . . .±8 seconds/month
Adjustments . . . . . . . . . . . . . . . .Time: Automatic Daylight Savings Time (for
users in North America and Europe that
observe it in AUTO mode, MANUAL setting
available for all other areas) Date: Automatic
Leap Year
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