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*Note: For LPG, corrections must be made for the difference in temperature of the product
as it passed through the meter and the temperature of the product as it occupies the prover,
along with a correction for the thermal expansion of the prover based on it’s temperature,
and also a correction of the prover volume based on pressure effects, when calculating the
Gross(uncompensated) volume of the prover. (Reference Tables 1, 2, & 3 of National Conference
on Weights and Measures, Course 305.)
18. Verify that the prover volume was entered correctly and press [Enter].
PROVER VOL CORRECT?
XXXX.XXX UNITS
19. The new K-Factor is calculated and displayed
Press [Enter] to verify the new K-Factor and return the display to step 12.
K-FACTOR CORRECT
XXXXXX/UNIT
Note: Any product programmed with a K-Factor of 999999 cannot be selected for delivery in route.
20. A second run should be performed to check the accuracy of the new K-Factor and the temperature
compensated (Net) volume. Drain and zero the prover once more. To check the accuracy of the new K-
Factor, return to the auto calibration process, and repeat steps 12- 17.
21. If the accuracy is acceptable, press [Stop/Cancel] six times to exit the calibration menu, or once to
repeat steps 12- 17 if further test runs are necessary.
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