Emerson Micro Motion 3711, Configuration And Use Manual, Page: 90 / 234

82 Micro Motion
®
Model 3711 Gas Flow Computers
Configuring I/O
7.9.3 Pulse Input – Alarms panel
The Pulse Input – Alarms panel is shown in Figure 7-15. Parameters on this panel are listed and
defined in Table 7-14.
Note: Even if you will not use all alarms, check and adjust the value of each one so that no false
alarms are generated.
Table 7-13 Pulse Inputs – Advanced parameters
Parameter Description Comments
EU Options Controls the contents of the EU Value parameter:
• Rate (Max Rollover): Displayed EU Value = Calculated rate.
• Today’s Total (Max Rollover): Displayed EU Value =
Accumulated quantity, in EUs, for current contract day.
Automatically reset to 0 every 24 hours, at the configured
Contract Hour.
• Running Total: Displayed EU Value = Accumulated quantity, in
EUs, since the last time the configured Rollover Value was
reached. Reset to 0 only when Rollover Value is reached.
See Section 7.9.1 for the formula
used in rate calculation.
The Conversion/K-Factor has
been applied to all options shown
here.
Conversion • EUs/Pulse: Each pulse represents the configured number of
EUs.
• Pulses/EU: The specified number of pulses represents one
EU.
Conversion/
K-Factor Enter the factor to be used to convert the actual pulse count to
EUs. Actual pulse count is multiplied by
this value to produce Rate, Today’s
Total, Running Total, and Current
Rate.
Filter Time Specify the number of seconds that will elapse between the
start of the pulse and the Model 3711’s recognition of the pulse. When configuring, adjust this
value for signal “bounce” so that
bounces are not counted as
pulses. If None is selected, all
pulse signal movements are
defined as pulses.
Rollover Value Specify the EU value at which the Running Total value will be
automatically reset to 0.
Rate Period Specify the time period to be used to perform the rate
calculation.