Calculate scale factor
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9.3 Change scale factor
Changing the scale factor changes the accuracy of the meter, potentially causing it to
overfill or under fill. This has the potential to cause a mechanical breakdown.
1. Press the button to advance through the scale
factor digits.
2. Press the button to change the selected
number.
NOTE:
All digits can be scrolled between 0 and 9 except
the first. It can only be scrolled from 0 to 1 or from 1 to 0.
3. Press the button to advance to the next number in scale factor.
4. Repeat steps 2 and 3 for all five digits in scale factor.
9.4 Save changes
To save changes and exit the programming mode:
1.
Push and hold at the same time the and buttons.
2.
The display will flash 3 times and go blank.
3.
Press the button and the display will turn back on.
9.5 Verify changes
1. Verify unit of measure is correct.
2. Push and hold the total button and auto button together, to verify that the scale
factor is correct.
10. Calculate scale factor
A scale factor is a number used to adjust meter accuracy. The scale factor is set at the factory
using motor oil with a viscosity of 10W.
The primary use for scale factor recalibration is to batch fluids with different viscosities. If the
fluid has a lower viscosity, more fluid can slip past the meter gears without being detected.
Changing the scale factor adjusts the meter to compensate for the loss.
The meter multiplies each pulse by the scale factor number to correct the accuracy when it
converts to the specified units. The reading is then always correct.
For an approximate scale factor for fluids of different viscosities, consult the charts on page
10.
NOTE:
The meter’s original scale factor was written on the trigger when it was calibrated at
the factory. It may have been revised after field installation. Use the scale factor showing on
the display, not on the trigger.
Changing the scale factor will change the accuracy of the meter, potentially causing it to
overfill or under fill. This has the potential to cause a mechanical breakdown.
To view the current scale factor:
Press and hold the button and the button at the same time.
Scale factor digits