Red Lion LEGEND - Manual (Page 15)

PROGRAMMING SCALING MODULE
In the scaling module, the Count and Rate scale factors, scale multipliers,
rate conversion factor, and decimal points are accessed. The following
flowchart shows only the Scaling portion:
COUNT SCALE FACTOR (COUNT SF)
The number of pulses counted (internal count value) is multiplied by the
count scale factor value and the count scale multiplier to obtain the desired
count display value. A count Scale Factor Value of 1.0000 will result 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 per unit of
measure 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 (RATE SF)
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 (in pulses per second) 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 Value can 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,
slow or fast. For details, refer to Scaling for Rate Indication in the Appendix.
Note: Since the Count and Rate Scale Factors may need to be changed
periodically, they can also be accessed from the Scale Factors module in
the main display loop.
COUNT SCALE MULTIPLIER (CNT. SCM)
There are four Count Scale Multipliers available; X 1, X 0.1, X 0.01, or X
0.001 that change the count display value accordingly. The number of pulses
counted (internal count value) is multiplied by the scale multiplier and the
scale factor values to obtain the desired Count display.
Note: Use of a small scale multiplier with a small scale factor could cause the
internal count value to be exceeded, before the 6-digit display value is
exceeded.
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