49
6.4.13 Totalizer Settings
The DPC provides the user with two independent Programmable Flow Totalizers. The total
volume (mass) of the fl owing fl uid is calculated by integrating the actual instantaneous fl uid
mass fl ow rate with respect to time. Totalizer reading values are stored in the EEPROM and
saved every second. In the case of power interruption, the last saved Totalizer value will be
loaded at the next power on cycle, so the Totalizer reading will not be lost. Use the
“Totalizer
Menu”
to navigate to the
“Totalizer #1”
or
"Totalizer #2"
menu options. The following set-
tings are available for Totalizer #1 and Totalizer #2 (see
Figure 19
):
a) Totalizer Mode (Tabular entry)
This option determines whether Totalizer is Enabled or Disabled, the only two
selections available. The default entry is Disabled. Totalizer Mode selections can be set
with the joystick
UP
and
DN
buttons and are accepted by pressing the joystick
equivalent of an
ENT
button.
NOTE: Before enabling the Totalizer, ensure that all Totalizer settings are
confi gured properly. Totalizer Start values must be entered in the currently active
Volumetric or Mass fl ow engineering unit. The Totalizer will not totalize until the
Process Flow Rate becomes equal to or greater than the Totalizer Start value.
Totalizer Event values must also be entered in currently active volume- or mass-
based engineering units. If the Totalizer Event (action) is not required at a preset
total volume feature, set the Totalizer Event value to zero (which is the
default
setting).
b) Totalizer Flow Start (Numerical entry)
This option allows the start of the Totalizer at a preset fl ow rate. The Totalizer will not
totalize until the process fl ow rate becomes equal to or greater than the Totalizer Flow
Start value. The limit of required Totalizer Flow Start value can be entered in
increments of 0.1%, from 0 - 100% FS.
c) Totalizer Action Volume (Numerical entry)
This option allows the user to activate a preset required action when the Totalizer
reaches a preset volume. Totalizer Action Volume value must be entered in currently
active volume- / mass-based engineering units. A Totalizer Action Event becomes true
when the Totalizer reading is more than or equal to the preset
"Totalizer Action
Volume”
. If the Totalizer feature is not required, set
“Totalizer Action Volume”
value
to zero; this is the default setting.
d) Totalizer Power On Delay (Numerical entry)
Sometimes it is convenient to start the Totalizer only after a specifi ed power-up delay
interval. Mass fl ow controllers require some warm-up time from the power-up event
in order to stabilize the process variable output and to get an accurate reading. The
“Totalizer Power On Delay”
option allows the user specify and set a time interval
which must elapse from the device power-up event before the Totalizer will be
activated. Valid settings are in the range of 0 to 3600 seconds. The default value is 0:
no
delay.
Summary of Contents for DPC
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