Hardware Conguration
Page 37 CXX-UM-03060-EN-01April 2019
OTE:N The clock frequency and carrier frequency match the particular model of
flow processor in use. Do not change these factory settings.
Field Sub-Field Function
Frequency
Clock (Hz) Configured at the factory to match individual EC80 Flow Processor.
Carrier (Hz)
Configured at the factory to optimize resonance curve when using RF
carrier pickoffs.
Average
Output
(Cycles)
The number of output samples necessary before the flow processor yields
a single value at the output. If data obtained from the flow processor is
updating too fast, use this feature to smooth the data so more samples
are taken prior to outputting a value.
Input
(Cycles)
The number of input samples necessary before the flow processor yields
a single value at the processor. If data obtained from the flow processor
is updating too fast, use this feature to smooth the data so more samples
are taken prior to inputting a value to the processor.
Low Flow
Cutoff
Numeric
Entry (GPM)
The low flow cutoff omits erroneous data in the low flow region of a
turbine meter. Near zero state conditions or pulsating flow may cause
erratic readings near zero flow. In this case, the flow processor can be
told to not output a flow rate below the set flow rate. Low Flow Cutoff is
typically set to zero and not used.
Oscillation
The Oscillation tab is only used at the factory to calibrate the flow processor’s
internal clock. Do not change these factory settings.
Figure 33: Oscillation tab
Meter Selection (BUS ID)
The software has provisions for multi-drop applications, where multiple flow
processors need to communicate to one central location. In order to address
multiple meters, you must designate a different Bus ID# to each flow processor.
There are 256 available Bus IDs (0…FF). Each ID consists of a one- or two-digit
hexadecimal value, where 0 = 0, and 255 = FF. In order for the software to
search and display a particular flow processor, you must upload the Bus ID (see
instructions below). This tells the interface to attempt communication with that
particular Bus ID.
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