
DATAFLOW RTU
1. INTRODUCTION
1.1 The DATAFLOW RTU from OMEGA 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.
OMEGA 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
DATAFLOW RTU 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 of 2 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 Watts (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.
3.
MICROPROCESSOR UPDATES
3.1 A microprocessor, IC105, the main controlling device of a DATAFLOW 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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