Red Lion DP5T - Manual (Page 16)

16
* Factory Setting can be used without affecting basic start-up.
5.5 MODULE 5 - T
OTALIZER
(I
NTEGRATOR
) P
ARAMETERS
( )
PARAMETER MENU
ª
«
TOTALIZER DECIMAL POINT*
For most applications, this matches the Input Display Decimal Point
( ). If a different location is desired, refer to Totalizer Scale Factor.
0.000 0.0000 0.00 0.0 0
ª
«
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.
ª
«
TOTALIZER SCALE FACTOR*
For most applications, the Totalizer reflects the same decimal point location
and engineering units as the 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. Changing engineering units (example inches to meters)
3. Changing both decimal point location and engineering units.
4. 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.
ª
«
TOTALIZER LOW CUT VALUE*
to
to
A low cut value disables Totalizer when the Input Display value falls below
the value programmed.
ª
«
TOTALIZER POWER UP RESET*
Reset buffer
Do not reset buffer
rSt
NO
The Totalizer can be reset to zero on each meter power-up by setting this
parameter to reset.
-
seconds (÷ 1)
-
days (÷ 86400)
TOTALIZER HIGH ORDER DISPLAY
When the total exceeds 5 digits, the front panel annunciator TOT flashes. 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 an average of 10.0 °C per hour. The Totalizer
is used to verify this average reading in a controlled time frame of 4 hours.
Because the Input Display and Totalizer are both in tenths of
°C, the Totalizer
Scale Factor is 1. However, the Totalizer Time Base is hours (3600) divided
by the 4 hours in the controlled time frame to yield a Totalizer Scale Factor
of 0.250. By placing these values in the equation, the Totalizer will
accumulate every second as follows:
10.0 x 0.250 = 0.00069 accumulates each second
3600
This results in:
0.04167 accumulates each minute
2.5 accumulates each hour
10.0 reached at the end of 4 hours
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
(x = Totalizer display is round by tens or hundreds)
2. When changing the Totalizer engineering units, the Totalizer Scale Factor is
the known conversion multiplier from Input Display units to Totalizer units.
Example: If Input Display is feet and the Totalizer needs to be in yards, the
conversion multiplier from feet to yards is 0.333. Enter 0.333 as the
Totalizer scale factor.
3. When changing both the Totalizer engineering units and Totalizer Decimal
Point the two calculations are multiplied together. Example: Input Display =
feet in tenths (0.0) with Totalizer = whole yards (0), the scale factor would
be 0.033.
4. 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 temperature 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.
- minutes (÷ 60)
-
hours (÷ 3600)
The totalizer accumulates (integrates) the Input Display value using one of
two modes. The first is using a time base. This can be used to compute a time-
temperature product. The second is through a user input or function key
programmed for Batch (one time add on demand). This can be used to provide
a readout of temperature integration, useful in curing and sterilization
applications. If the Totalizer is not needed, its display can be locked-out and this
module can be skipped during programming.
.001 x10
.01 0
.1 0.0
1 0.00
10 0.000
Scale
Factor
Totalizer Scale
Factor
0.00 10
0.0 1
0 .1
x10 .01
x100 .001
Totalizer