Casella CEL Nomad portable weather station - Manual (Page 49)

7. THE SENSUS DIGITAL DATA LOGGER
WARNINGS !
The SENSUS Logger contains no user serviceable components. If an
electrical fault is suspected the instrument must be returned to Casella
CEL for repair.
The Logger should not be dropped or subjected to mechanical
shock. Failure to comply will render the warranty invalid.
7.1 Brief Introduction to the Sensus Data Logger
The SENSUS Digital Data Logger from Casella CEL is a professional instrument
specifically designed to monitor and record measurements from a compre-
hensive array of sensor technologies, whether measuring process temperatures
using simple resistance thermometers or airport traffic noise levels from a sound
level meter the SENSUS Logger is more than capable.
From beginning to end the SENSUS has been designed with the user in
mind.
Secure spring loaded connector blocks attach the all-important sensor
outputs to the SENSUS input stage, precision analog circuitry transfers these
values to the high-speed microprocessor which processes and stores the data in
reliable Flash memory.
A comprehensive set of alarm functions allow the Sensus Logger to
make decisions based on a wide range of input data, the results of these
decisions can then be broadcast to other computer/control systems via modem
or to specified operators using a GSM modem/SMS service.
The Sensus is designed to start processing/logging data as soon as
power is applied to it and to continue to do so until power is removed. This
means that should power to the logger be interrupted for any reason, the unit
will recover and continue collecting data when power is restored without any
user intervention.
When the Sensus Logger is powered-up, it re-configures itself
automatically, based upon a set of operating parameters held in its internal
profile. Once the contents of the profile have been processed the logger begins
its task of collecting/logging data.
Most aspects of the logger’s operation can be changed by the user,
either by the menu system accessed via hyperterminal or the command line
interface. Both of these configuration tools are accessible via the RS232
command interface. The menu system is more useful for manual reconfiguration
where a few parameters are to be changed or a new sensor added. The
command line interface is of more use where an automatic configuration is
Figure 20: The Sensus Data Logger
Sensus Data Logger
Page 49 of 68
NOMAD Portable Weather Station
Users Handbook