TOTALIZER PROGRAMMING
Totalizer values can be expressed in any engineering unit
of measure such as gallons, quarts, liters, etc. For each
unit a unique scale factor must be programmed.
To determine the
Totalizer Scale Factor
(Program Mode
#1), use the following formula:
Totalizer Scale Factor =
1/(Transmitter pulses per unit X Decimal Factor)
where:
Transmitter Pulses per Unit
is the number from the chart
at the right, or the Industrial Tech Brief (ITB) for your
particular transmitter/meter combination. The chart is
expressed in gallons and liters. If you wish to read in
other units, use the appropriate conversion factor.
Decimal Factor (from 1.0 to .001)
determines the
resolution of the reading. If you wish to read to the
nearest 1/10 unit, the Decimal Factor would be 0.1.
Example: You have a model 35 RCDL meter with a PFT2
transmitter that has a pulse output of 126.7 pulses per
gallon. You wish to read the totalizer to the nearest tenth
gallon.
1/(126.7 X 0.1) =
0.0789
(scale factor)
Step #1
: Set the Totalizer Scale Factor to 00.0789.
(Program Mode #1)
Step #2
: Set the totalizer Decimal Point Factor to
“00000.0” (one decimal place) (Program Mode #2).
RATE OF FLOW PROGRAMMING
Rate of flow can be expressed in any engineering unit of
measure for any time base such as gallons/minute, liters/
second, barrels/hour, etc.
To determine the Rate Scale Factor (Program Mode #3),
use the following formula:
Rate Scale Factor =
(Seconds / Transmitter Pulses per Unit X Decimal Factor)
where:
Seconds
is the number of seconds in the rate time unit. If
you wish to read flow in units per minute, seconds would
equal 60. If you wish to read flow in units per hour,
seconds would equal 3600.
Transmitter Pulses per Unit
is the number from the chart
to the right or the Industrial Tech Brief (ITB) for your
particular transmitter/meter combination. The chart is
expressed in gallons and liters. If you wish to read in
other units, use the appropriate conversion factor.
Decimal Factor (from 1.0 to 0.001) determines the
resolution of the reading. If you wish to read the rate to the
rearest 1/10 unit, the Decimal Factor should be 0.1.
ER-10/ER-10H Programming Calculations
5
Before you program the Rate Scale Factor, you must set
the Rate Decimal Point position (Program Mode #4). This
decimal point will correspond to the decimal in the Rate
Scale Factor number.
Example: You have a model 35 RCDL meter with a PFT2
transmitter that has a pulse output of 126.7 pulses per
gallon. You wish to read rate of flow in gallons per minute.
(60 seconds /126.7 pulses per gallon X 1.0
= 60/126.7 =
0.473
(rate scale factor)
Step #1
: Set the rate scale factor to 0.473 (Program mode
# 3).
Step #2
: Since we are reading in whole gallons, set
program mode #4 (Rate Decimal Point) to 0000.
Step #3
: Since we are reading in whole gallons (no
multiplier), set program mode #5 to 1.
*If using a PFT3E transmitter, multiply number by 2.
Transmitter Pulses
per Unit chart
FT1
FT2
PFT2
PFT3
PFT2E
FT1E
FT420
PFT420
Size
(Inches)
Meter Model
Gallons
Liters
1/2
OP
223.0
58.9
1/2
OP(FT1 only)
111.5
29.4
1
OP
76.6
20.2
2
OP
20.6
5.4
2
IND'L TURBO
* 17.36
* 4.6
3
IND'L TURBO
* 12.4
* 3.2
4
IND'L TURBO
* 2.56
* 0.6
6
IND'L TURBO
* 1.08
* 0.2
5/8
25 IND RCDL
198.4
52.4
3/4
35 IND RCDL
126.7
33.5
1
40 IND RCDL
89.8
23.7
1
70 IND RCDL
46.8
12.4
1 1/2
120 IND RCDL
23.8
6.3
2
170 IND RCDL
14.6
3.9
3
TSM METER
1.598
0.422
