Casella CEL Nomad portable weather station - Manual (Page 41)

6. THE NOMAD SYSTEM COMPONENTS
A complete system can consist of the following basic components.
Sensors Mounted in an array on the Sensor Head,
plus one inside the Environmental Case,
and the remainder deployed nearby,
see this chapter.
Tripod Supports the Sensor Head and Environmental
Case,
see Chapter 2.
Data Logger Sensus unit inside the Environmental Case
stores data continuously when switched on
with sufficient voltage level,
see Chapter 7.
Communication facilities Two-way via a direct cable during visits by a
technician for downloading,
Two-way via a permanent direct cable to a
nearby PC,
Two-way via a GSM modem link to a PC,
Two-way via a high power radio modem link
to a PC when power is supplied to the Nomad
by a landline,
Data download only via passive low power or
high power radio modem links to a PC,
Data download during visits by a technician
by replacement of a CompactFlash Card,
see Chapter 8.
Power supply Lead acid battery inside the Environmental
Case, with level maintained from a solar
panel attached to the case,
Battery charger,
Other supplies may be arranged,
see Chapter 9.
PC Portable for downloading visits to the Nomad,
or situated remotely with communication
facilities as described above.
6.1 The Sensors Used with Nomad Systems
The Standard Nomad Portable Weather System is equipped with sensors to
measure the following parameters.
Air temperature
8
Relative humidity
8
Wind speed
Wind direction
Solar radiation
Barometric pressure
Rainfall (separate tipping bucket unit).
The Nomad Portable Wind System is equipped to measure:
Wind speed
Wind direction
Barometric pressure.
Standard Sensors
Note 8: Air temperature and relative humidity are measured by a combined sensor.
Page 41 of 68
NOMAD Portable Weather Station
Users Handbook