5 module 5 - t, Otalizer, Ntegrator – Red Lion PAXDP User Manual
Page 17: Arameters, Tbase decpt scfac locut p-up pro, Decpt, Asin
17
tbASE
dECPt
SCFAC
Locut
P-uP
Pro
Totalizer
Decimal Point
Totalizer
Time Base
Totalizer
Scale Factor
Totalizer Low
Cut Value
Totalizer Power
Up Reset
dECPt
Totalizer
Assignment
5-tOt
5-tOt
PAR
PAR
ASIN
6.5 mOdule 5 - T
OTalizer
(i
nTegraTOr
) p
arameTers
(
)
PARAMETER MENU
TOTALIZER DECIMAL POINT*
For most applications, this should match the decimal point position of the
meter value selected in the totalizer assignment. If a different location is
desired, refer to Totalizer Scale Factor.
TOTALIZER TIME BASE
This is the time base used in Totalizer accumulations. If the Totalizer is being
accumulated through a user input programmed for Batch, then this parameter
does not apply.
-
seconds (÷ 1)
-
days (÷ 86400)
- minutes (÷ 60)
The totalizer accumulates (integrates) the relative Input value using one of
two modes. The first is using a time base. This can be used to provide an
indication of total flow, usage or consumption over time. The second is through
a user input or function key programmed for Batch (one time add on demand).
This can be used for weighing applications where accumulation is based on a
completed event. If the Totalizer is not needed, its display can be locked-out and
this module can be skipped during programming.
TOTALIZER ASSIGNMENT
This parameter determines which value is to be totalized.
TOTALIZER SCALE FACTOR*
For most applications, the Totalizer reflects the same decimal point location
and engineering units as the assigned Input Display. In these cases, the Totalizer
Scale Factor is 1.000. The Totalizer Scale Factor can be used to scale the
Totalizer to a different value than the Input Display. Common possibilities are:
1. Changing decimal point location (example tenths to whole)
2. Average over a controlled time frame.
Details on calculating the scale factor are shown later.
If the Totalizer is being accumulated through a user input programmed for
Batch, then this parameter does not apply.
to
-
hours (÷ 3600)
TOTALIZER LOW CUT VALUE*
to
A low cut value disables Totalizer when the Input Display value falls below
the value programmed.
TOTALIZER POWER UP RESET
Reset totalizer
Do not reset totalizer
The Totalizer can be reset to zero on each meter power-up by setting this
parameter to reset.
*
The decimal point position is dependent on the selection made in the
“Totalizer Decimal Point” parameter.
TOTALIZER HIGH ORDER DISPLAY
When the total exceeds 5 digits, the front panel annunciator flashes (if
assigned to A, B, or C display). In this case, the meter continues to totalize up
to a 9 digit value. The high order 4 digits and the low order 5 digits of the total
are displayed alternately. The letter “
” denotes the high order display.
TOTALIZER BATCHING
The Totalizer Time Base and scale factor are overridden when a user input or
function key is programmed for store batch (
). In this mode, when the user
input or function key is activated, the Input Display reading is one time added
to the Totalizer (batch). The Totalizer retains a running sum of each batch
operation until the Totalizer is reset. This is useful in weighing operations, when
the value to be added is not based on time but after a filling event.
TOTALIZER USING TIME BASE
Totalizer accumulates as defined by:
Input Display x Totalizer Scale Factor
Totalizer Time Base
Where:
Input Display - the present input reading
Totalizer Scale Factor - 0.001 to 65.000
Totalizer Time Base - (the division factor of
)
Example: The input reading is at a constant rate of 10.0 gallons per minute. The
Totalizer is used to determine how many gallons in tenths has flowed.
Because the Input Display and Totalizer are both in tenths of gallons, the
Totalizer Scale Factor is 1. With gallons per minute, the Totalizer Time Base
is minutes (60). By placing these values in the equation, the Totalizer will
accumulate every second as follows:
10.0 x 1.000 = 0.1667 gallons accumulate each second
60
This results in:
10.0 gallons accumulate each minute
600.0 gallons accumulate each hour
TOTALIZER SCALE FACTOR CALCULATION EXAMPLES
1. When changing the Totalizer Decimal Point (
) location from the
Input Display Decimal Point (
), the required Totalizer Scale Factor is
multiplied by a power of ten.
Example: Input (
) = 0.0 Input (
) = 0.00
Totalizer
Scale
Factor
Totalizer
Scale
Factor
0.00
10
0.000
10
0.0
1
0.00
1
0
.1
0.0
.1
x10
.01
0
.01
x100
.001
x10
.001
(x = Totalizer display is round by tens or hundreds)
2. To obtain an average reading within a controlled time frame, the selected
Totalizer Time Base is divided by the given time period expressed in the same
timing units.
Example: Average flow rate per hour in a 4 hour period, the scale factor
would be 0.250. To achieve a controlled time frame, connect an external timer
to a user input programmed for
. The timer will control the start (reset)
and the stopping (hold) of the totalizer.