AW Gear Meters LLC-E-BA - Manual (Page 17)

AW-Lake Company 8809 Industrial Drive, Franksville, WI 53126  web: www.aw-lake.com
 Tel: 262-884-9800  Fax: 262-884-9810  Email: [email protected]
REV. 1.3 LLC-E-BA Manual rev 3.3.10.DOC
17
KFT-factor - For the LLC to display in a desired engineering unit such as Gallons, an appropriate
scaling factor must be programmed. This factor is the KFT factor. The KFT is calculated using the
K-factor of the transducer being monitored. The K-factor is the number of impulses per engineering
unit established by the transducer manufacturer or by a calibration test.
Factory default is 0010000. (Displays total pulses w/ no decimals)
To calculate the KFT factor use the following formula:
KFT= 10000/K-FACTOR
Where:
- 10000 is a constant
- K-FACTOR is the average number of pulses per desired
eng. unit that the transducer produces.
Remove the insignificant decimals often produced with this calculation as they will result in displays
with a misleading level of precision far exceeding the accuracy of the meter. Use a maximum of four
digits regardless of decimal point position! Enter KFT without regard to the location of the decimal
point in the display. The desired decimal location is entered in the next procedure. The largest
acceptable number for KFT is 65535.
For example:
A flowmeter has a K-factor 2053.7 imp/Gal and the display should read in Gallons.
KFT = 10000 / 2053.57 = 4.869568 for Gallons
486957 is > 65535! 48696 > 4 digits! 4870 is best! Enter 4870 for KFT. For this
example, KFR=4.870, the decimal point is set to three decimal places in the next procedure.
Press and hold the (UP) or (DN)-key to increment or decrement the variable value. To increase
the increment or decrement rate, while holding the (UP) or (DN)-key, press and hold the (SEL)-
key for medium rate or the (ENT)-key for maximum rate. When the desired value is displayed,
press the (ENT)-key to store the programmed value and advance to the next variable.
NOTE: Always release (SEL) or (ENT)-key before releasing the (UP) or (DN)-key or the LLC
will proceed to next variable leaving the last variable with an unpredictable value.
DP for KFT - This variable selects the location of the decimal point in the KFT factor and the
display. This display will always be zeros with a decimal point.
Factory default is 0000000.
Use the (UP) or (DN)-key to move the decimal point left or right. Press the (ENT)-key to store the
location and advance to the next variable.
Eng
=g UNITS KFT - The desired engineering units for display of rate are entered using up to three