The Model T9M260278 Modular Weather Station is a
computer-based meteorological system designed as
a “user-friendly” solution for data storage and real-
time monitoring of weather conditions. The
standard package includes:

• Wind Speed
• Wind Directions
• Air Temperature
• Relative Humidity
• Barometric Pressure
• Precipitation
• Data Logger
• Tripod & Mast
• Solar Radiation Shield for
temp/humidity
• Cables & Mounts
• Set-Up Disk

Additional Sensor options include solar
radiation, water or soil temperature, auxiliary
air temperature, rain gauge upgrade,
evaporation and soil moisture.

The unique modular system design provides

plug-and-play functionality for adding or
replacing sensors. The T9M260278 Data
Acquisition Module includes the following
features larger nonvolatile memory, selectable
averaging intervals, 12 bit analog conversion,
0.1% F.S. accuracy, two alarm outputs, and
ptional modem communications. o

The T9M260278 is supplied with an attractive
desktop data acquisition module with a memory capacity of 128KB RAM （approximay
45 days at 15 minute intervals with 6 sensors）. The standard system includes a 120Vac
power adapter and RS232 serial port for connection to a personal computer. For outdoor
or remote applications, two enclosure options are available. One is for sites with AC
power and the other utilizes a solar panel. Both options include a NEMA-4X enclosure
and rechargeable battery to allow continued operation in the event of power failure.

Data can be viewed using Windows HyperTerminal or other terminal programs such as
Procomm. A one page real-time text display or an ASCII row and column format may be
selected. A menu is provided for setting the date and time, alarms, logging interval etc.
Optional graphical displays software is available for viewing real-time and historical data
charts and graphs.


Data Acquisition Module
Reporting units: English or Metric, all
measurements
Operating power: 10-16 Vdc
Power consumption: 60 mA maximum
Serial port: 9-pin d-sub connector,
selectable baud rate, flow control
Memory: 128KB RAM, nonvolatile （45 days
at 15 minute intervals with
6 sensors） Expandable to 256KB or 512KB.

Operating Temperature
Transducers: -40° to 140° F （-40° to 60° C）
Data acquisition module: -40° to 140° F （-
40° to 60° C）

Timekeeping
Format: MM/DD and HH:MM

Accuracy: ± 30 seconds/month

Barometric Pressure
Range: 28.25 to 30.75 inches Hg
Measurement span: 2.50 inches Hg （85
hpa）
Resolution: ± 0.01 inch Hg or ± 0.3 hpa
Altitude offset: 0 to +10,000 feet,
screwdriver adjustable
Absolute Accuracy: .05 inches Hg

Wind Speed
Range: 0 to 125 mph （0-57 m/s）
Resolution: > 0.1 mph
Accuracy: ± 1 mph
Starting threshold: 0.8 mph
Time constant: 2 seconds

Wind Direction
Range: 0-360°
Resolution: > 1%
Accuracy: + 1°F
Starting threshold:
WS02E: 1.2 mph
WS05E: 0.5mph
Relative Humidity
Range: 0- RH
Accuracy: + 3% （10-90%）

Wind Direction
Range: 0 - 360°
Resolution: > 1%
Accuracy: + 3%


Solar Radiation
（optional）
Sensor: Silicon Pyranometer
Spectral range: .4 to 1.1 microns
Sensitivity: 80 mV / 1000w/m² approx
Accuracy: + 5%
Ordering Information
T9M260278 Modular Weather Station
includes the following components:
T9M260278D Data Acquisition Module in
Desktop Enclosure,
includes set-up disk and 6’ serial cable
WS02E Wind Speed/Direction Sensor,
40' cable
T9M260278TH Outdoor Temperature &
Relative Humidity Sensor,
40' cable
T9M260278THS Solar Radiation Shield for
temp/rh sensor
T9M260278BP Barometric Pressure Sensor,
18" cable
T9M260278RC Rain Gauge, includes
mounting arm and 40' cable
T9M260278TM 5' Tripod & 5' Sensor Mast （8’
total）
T9M260278P Power Supply, for desktop
enclosure, 120Vac
T9M260278EPA High Sensitivity Modular
Weather Station
same as above but with:
WS05E High Sensitivity Wind Sensor,
40' cable
Options:
T9M241270 Air Quality Particulate Air Monitor