Emerson Rosemount 3490 Series Reference Manual page 128

Getting started
January 2021
Set-up totalizing on the Rosemount 3493
Menu
The Rosemount 3493 Control Unit has two totalizers: Totalizer 1 and Totalizer 2.
Set-up Totalizer 1 (cumulative totalized flow)
This is an 8-digit totalizer showing cumulative totalized flow through a flow structure.
Note
Totalizer 1 operates with an input of control unit PV (D800) in units per second. If the PV is
a volumetric flow rate (e.g. m
give the total volume throughput. See
totalizing.
Table 4-35: Totalizer 1 Parameters
Parameter
P530
P531
P534
D828
128
SETUP → [CONTROLLER] → OUTPUT → TOTALIZER and
MONITOR → [CONTROLLER] → READINGS → TOTALIZER
3
/hour), the totalizer can accumulate this flow volume and
Description
Total 1 Factor One count is added to the Totalizer Count (D828) for
a quantity of liquid as defined by this parameter. The
display units for D828 is defined by P531.
Total 1 Units This parameter defines the units for the Totalizer
Count (D828).
When using totalizer units of gal, an 8-digit totalizer
increments rapidly and rolls over too frequently. To
help, alternative totalizer units of galx10, galx100,
galx1000, and Mgal are available for selection. When
these special units are selected after selecting gal
units, the totalizer factor (P530) is automatically re-
scaled by x10, x100, x1000, or x1000000 depending
on the selection. Similarly, re-scaling is automatic for
ltrx10, ltrx100, etc. after selecting ltr as totalizer
units. See
application
galx100 totalizer units are needed.
Pulse Width A Totalizer mode relay is energized for a
programmed duration (P534) each time the
Totalizer count (D828/D829) is incremented.
P534 controls the pulse width (i.e. the pulse 'on'
time) and is between 10 ms and 2.5 s, changeable in
steps of 10 ms.
Parameter P534 also defines the pulse width for a
Sampler mode relay (see
Note
See Set-up the relays
mode relays.
Totalizer 1 This read-only parameter displays the Totalizer 1
count, which is the cumulative totalized flow. To add
this to the Full PV Display, see
options.
Pumped volume totalizing
Using the App Wizard to set-up a flow
for a flow application example where
Set-up the relays).
for information on Totalizer
Display configuration
Reference Manual
00809-0100-4841
for pumped volume
Factory default
0.0
None
100 ms
N/A
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