Product specifications

DS7400 (Rev. E, 1/4/07)
3-1
Perception and Wizard Stations
7400
Perception II
®
Station
The Perception II station features the following:
inside temperature and humidity sensors, barometer, and
console. The console provides A/D conversion, calculations, and data
display. A DC-power adapter is included. The WeatherLink, an optional feature, provides data logging and a serial
interface to a computer.
General
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -5° to 140° F (-20° to 60° C)
Display Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32° to 140° F (0° to 60° C)
Supply Power (adapter included). . . . . . . . . . . . . . . . . . . 16 mA (typical) at 10 to 16 V (100 mA when display is illuminated)
Housing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black ABS plastic
Display Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LCD
Dimensions
Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.25" x 5.4" x 3.0" (133 mm x 137 mm x 76 mm)
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4" x 1.9" (112 mm x 48 mm)
Weight, total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 lbs. 6 oz. (1.53 kg)
Sensor Inputs
RF Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RC low-pass filter on each signal line
Data Displayed On Console
All data display categories are displayed in alphabetical order:
Barometric Pressure (sensor located inside console)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . Measured in 0.01" Hg. Other units are converted from Hg and rounded
to nearest 0.1 mm, 0.1 hPa, 0.1mb.
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.00" to 32.00", 660.0 to 810.0 mm, 880.0 to 1080.0 hPa
Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.05", ±1.3 mm, ±1.7 hPa (at room temperature)
Trend (change in 1 hour). . . . . . . . . . . . . . . . . . . . . . . . . ±0.2", ±5.0 mm, ±7.0 hPa
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Barometric Pressure, Current Barometric Pressure Trend,
Stored Barometric Pressure Reading
General
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 seconds
Times and Dates of Maximum and Minimum Values . . . . Stored with value
Inside Temperature (Air) (sensor located inside console)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 or 0.1°F or 1 or 0.1°C.°. Celsius is converted from Fahrenheit
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32° to 140° F (0° to 60° C)
Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1°F (±0.5°C)
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Temperature (high and low alarms), Maximum and Minimum
Temperatures
Relative Humidity
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1%
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 to 90% RH
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5%
Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Inside Relative Humidity (high and low alarms), Maximum and
Minimum Relative Humidity Values