I.
INTRODUCTION
DATAFLOWRTU
1.1
The
DATAFLOW® RTU
from RlTRON is a complete wireless telemetry system designed to deliver
industrial instrumentation signals from a source to other instruments via radio frequency
communications. The
DATAFLOW RTU
allows you to access industrial measuring devices in
remote locations without running wires, installing microwave links or leasing a telephone line.
RlTRON
DATAFLOW RTU
and MODBUS radio communications equipment replaces these
methods.
1.2
Manual Part A is intended to provide information needed for the installation and operation of
RITRON systems. The intended readers are people familiar with industrial instrumentation. A basic
understanding of radio communications is helpful. The included information is valid only for models
listed on the cover.
2.
OPERATION
2.1
DATAFLOW RTU
is a radio telemetry system. It operates on either 450-470 MHz with a transmitter
power of2 Watts or 5 Watts (UHF-FM), or 136 to 151 MHz, 150 to 165 MHz, 160 to 174 MHz with
a transmitter power of 5 Warts (VHF-FM). An RTU system operating in the UHF-FM band at 2
Watts with directional antennas and 50-foot towers has an effective range of 20 to 25 miles over level
terrain. Changes in the frequency of operation, transmitter power, terrain and antenna structure will
affect the range of the link.
2.2
All
DATAFLOW RTU
systems require FCC licensing. Call RITRON for assistance in obtaining a
license.
3.
MICROPROCESSOR UPDATES
3.1
A microprocessor, IC105, the main controlling device of
aDATAFLOW RTU,
is located in a socket
on the Control Board. Socket configuration provides ease in replacing or updating microprocessor
firmware.
3.2
The microprocessor firmware version available when this manual was printed is Version 3.27. (In
Version 3.x, "x" represents the [number] designation of a minor revision.)
( A-1 )
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