Balcrank 3331-018, Руководство по эксплуатации, установке, обслуживанию и ремонту

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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 the
next page.
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 show -
ing on the display, not on the trigger.
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.
To view the current Scale Factor:
1. Press and hold the button and the button at the same time.
Absolute Scale Factor
For absolute Scale Factor, perform this test:
1. Run a measured amount of fluid through the meter.
2. If the meter delivers 4.20 quarts and the display shows only 4.00 quarts, then the Scale
Factor needs to be adjusted.
3. Divide what the meter delivered (4.20) by what the display shows (4.00). You get an error
factor of (1.05).
4. The existing Scale Factor is 1.0123, as shown in steps 1 and 2 in “To view the current
Scale Factor”, above.
5. To calculate a new factor: 1.0123 (existing Scale Factor) x 1.05 (error factor) = 1.0629
(new Scale Factor).
6. Enter that number as described in the Change Scale Factor section of this manual.
NOTE: Use the Scale Factor showing on the display, not on the trigger.
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