Calculating the Calibration Factor

Calculating the Calibration Factor

Use the following tables and formulas to calculate the change to the calibration factor.

Example of Calibration Adjustment for Motor Oil (quarts - 368)

Dispense into a clean, calibrated, volumetric measuring flask until the meter display indicates 1 quart of fluid has been dispensed.

For greater accuracy, submerge the nozzle and let the air settle out of the fluid for ten minutes before noting the volume.

In the following example, the flask shows the volume is less than one quart (-1.2 ounces). See the left column and find the number closest to -1.2 ounce value which is 1.0.

Look for the corresponding number in the right column, which is +12. If the current calibration factor is 368, add 12 to get the new calibration factor of 380.

Change this factor for a fluid in Tank Setup and for given meter(s) in Meter Setup.

Metric Measurement

Measuring in liters, and 1 liter is dispensed

Error in Milliliters (ml)

Change Calibration

 

Factor by:

 

 

+ 50

- 20

 

 

+ 40

- 16

 

 

+ 30

- 12

 

 

+ 20

- 8

 

 

+ 10

- 4

 

 

+ 0

no change

 

 

- 10

+ 4

 

 

- 20

+ 8

 

 

- 30

+ 12

 

 

- 40

+ 16

 

 

- 50

+ 20

 

 

U.S. Measurement

Measuring in quarts, and 1 quart is dispensed

Error in U.S. ounces

Change Calibration

(oz.)

Factor by:

 

 

+ 1.7

- 20

 

 

+ 1.4

- 16

 

 

+ 1.0

- 12

 

 

+ 0.68

- 8

 

 

+ 0.34

- 4

 

 

0

no change

 

 

- 0.34

+ 4

 

 

- 0.68

+ 8

 

 

- 1.0

+ 12

 

 

- 1.4

+ 16

 

 

- 1.7

+ 20

 

 

The table on the right lists approximate calibration fac- tors for different fluids. Your calibration number may vary slightly due to temperature or flow rate.

 

Calibration

Fluid

Number

 

 

 

Quarts

Liters

 

 

 

Oil (10W-30)

368

389

 

 

 

Gear Lube

375

396

 

 

 

Automatic Transmission Fluid

368

389

 

 

 

Antifreeze

348

368

 

 

 

309497L

19

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Graco 246008, 249881 instruction manual Calculating the Calibration Factor, Metric Measurement