AW Gear Meters RT-15 - Manual (Page 24)

RT‐15 Flow Monitor
Operation and Programming Manual
23
Method
1. Determine the number of decimal places desired for total display.
2. Round off the result of the formula to the desired accuracy.
3. Enter the KFT using only that number of decimal places.
Using too few decimal places can cause relatively large display errors, up to several percent of actual
reading. Using too many decimal places can result in displays with a level of precision exceeding the
accuracy of the meter. Use no more than four digits regardless of decimal point position! The largest
acceptable value for KFT is 65535 with the decimal in any location.
For example:
A flow meter has a K‐factor 2053.57 imp/gal and the display should read in gallons with accuracy to
three decimal places.
KFT = 10000 /2053.7 = 4.869568 for Gallons
Round off 4.869568 to three decimal places and enter 4.870 for KFT.
When entering or editing the KFR value, the leftmost digit will blink (cursor). Use the SEL button (or
magnetic switch) to select the digit to edit; the cursor moves to the right and wraps around. You can
relocate the decimal point when it is selected (blinking). Use the UP or DN button (or magnetic switch)
to increase or decrease the variable value, or to move the decimal point. Use DN to move the decimal
point to the right, UP to move it to the left. When the desired value displays, use the ENT button (or
magnetic switch) to store the programmed value and advance to the next variable.
ENG UNITS A
The desired engineering units for display of total are programmable using up to four letters. Example:
GALS
Initial default is PULS
The engineering units display does not affect the scaling in any way and serves as nothing more than a
label. The rate scaling is performed in the KFT calculation.
The first (left‐most) character will be highlighted with the blinking cursor first. Use the SEL button (or
magnetic switch) to move the cursor; use the UP or DN button (or magnetic switch) to scroll through the
alphabet. After you have entered the characters, use the ENT button (or magnetic switch) to store the
variable. The RT‐15 then exits the variable programming mode and returns to the selected display.
Notice