Troubleshooting Guide
26
Sea-Level Reduction Equation . . United States Method employed prior to use
of current "R Factor" method
Equation Source . . . . . . . . . . . . .Smithsonian Meteorolo gical 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 (±1.0mm Hg, ±1.4 h Pa/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, Mo nthly
Highs and Lows
Alarms . . . . . . . . . . . . . . . . . . . .High Threshold from Current Trend for Storm
Clearing (Rising Trend
Low Threshold from Current Trend for Storm
Warning (Falling Trend)
Range for Rising and Falling Trend Alarms0.01 to 0.25" Hg (0.1 to 6.4 mm Hg,
0.1 to 8.5 hPa/mb)
Inside Relative Humidity (sensor located in console)
Range. . . . . . . . . . . . . . . . . . . . . 10 to 90% 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 Hi ghs 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 (user-
selectable)
Accuracy. . . . . . . . . . . . . . . . . . . ±8 seconds/month
Adjustments . . . . . . . . . . . . . . . . Time: Automatic Daylight Savings Time (for
users in North America, Europe and Australia
that observe it in AUTO mode, MANUAL
setting available for all other areas) Date:
Automatic Leap Year
Troubleshooting Guide