Red Lion LEGEND - Manual (Page 16)

PROGRAM SCALE FACTORS MODULE
The Scale Factors are accessed from the Scale Factors Module in the main
display loop or from the Scaling Module in the programming loop. Since the
Scale Factors may need to be changed periodically, this module allows the
operator to change a Scale Factor value WITHOUT entering the programming
loop. The following flowchart shows only the Scale Factor portion:
COUNT SCALE FACTOR
The number of pulses counted (internal count value) is multiplied by the
Count Scale Factor value and the Scale Multiplier to obtain the desired Count
display value. A Count Scale Factor Value of 1.0000 and a Scale Multiplier of
“1” results in the display of the actual number of input pulses that were
counted. The Count Scale Factor value is used for converting the number of
pulses counted to the required units of measure for the display. This includes
conversion from different units of measure (i.e feet to meters, etc.). The
Count Scale Factor Value can range from 0.0001 to 5.9999. It is important to
note that the precision of a counter application cannot be improved by using a
Scale Factor greater than “1”. To accomplish greater precision, more pulse
information must be generated per measuring unit. For details, refer to
Scaling for Count Indication in the Appendix.
RATE SCALE FACTOR
The internal rate value (pulses per second) is multiplied by the Rate Scale
Factor, Rate Scale Multiplier, and Rate Conversion Factor values, to obtain
the desired rate display value. The Rate Scale Factor value is used for
converting the internal rate to the required units of measure for the display.
This includes conversion from different units of measure (i.e feet to meters,
etc.). The Rate Scale Factor Values range from 0.0001 to 5.9999. Due to the
way the rate is calculated, high resolution and accuracy are achieved at all
input rates. For details, refer to Scaling for Rate Indication in the Appendix.
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