11
CALCULATING SCALE FACTORS
The unit has a programmable scale factor to scale the input pulses. It is a 5 digit , floating decimal divider factor. The factor
to enter is the number of pulses per the desired unit of measurement. The factor ranges from 0.0001 to 99999.
Scale factor calculations are simple. Here are some examples:
DECIMAL LOCATION:
When a decimal is desired for display, special care must be taken when programming the Factor (
factor
) and Decimal
Location (
Dp loc
). The factor must be entered in pulses per units desired for display. (i.e. pulse per 1 unit, pulses per 0.1
units, pulses per 0.01 units, etc.) The Decimal Location (
Dp loc
) controls the decimal placement for the display. For each
decimal place you move for
Dp loc
, you must also move the decimal for the factor (
dp f a
).
Example: The flow sensor outputs 678.4 pulses per gallon.
To display whole gallons (1 gal) enter
678.4 for the factor
To display tenths of gallons (0.1 gal) enter
67.84 for the factor
To display hundredths of gallons (0.01) gal) enter
6.784 for the factor
SCALING FACTOR EXAMPLES:
Flow Batching:
You want to fill a 55.0 gallon drum. The flow sensor gives 387 pulses per gallon.
Solution - Dial in a scale factor of 38.7 (38.7 to display 0.1 gal; 387 for whole gal.)
Under
count
, set
dploc
to
dplo.c
to read tenths of gallons.
Set PRE A at 55.0; Wire Relay A to solenoid valve.
UNITS CONVERSION CHART
To convert:
divide factor by
To convert:
divide factor by
ft to m
0.3048
kg to lb
2.2046
ft
2
to m
2
0.0929
l to ft
3
0.0353
ft
3
to m
3
0.02832
l to gal
0.2642
ft
3
to gal
7.4805
m to ft
3.2808
gal to l
3.7854
m
2
to ft
2
10.7639
gal to m
3
0.00379
m
3
to ft
3
35.3147
gal to ft
3
0.1337
m
3
to gal
264.172
gal to lb (H
2
O)
8.3378
lb to kg
0.45359
Converting Scale Factors
When different units of measure are given than what is desired, simply convert the given Scale Factors to reflect the de-
sired units using the following calculations.
Pulses Per Unit (given) = Scale Factor
Units Conversion Factor
Use the Units Conversion Chart below when converting the given Scale Factor. Be sure to use the Scale Factor for whole
units and divide it by the proper Conversion Factor.