Gasboy 9800Q Series - Manual (Page 78)

Start-Up and Test
Page 7-4 MDE-4340A Series 9800Q Pumps and Dispensers Installation/Operation Manual · January 2006
.
Note: Always make the final adjustment by turning IN on the thimble. If the new setting is a
higher number than the original, turn it back beyond the desired figure and come back
to it.
Example: Assume the adjuster setting at the start of the test reads 2.05. Product is run through
the meter into a prover until the counter registers 100 gallons. Assume the prover shows a
volume of 98.7 gallons (1.3 gallons short). Since the adjuster graduations are in percent
readings, this 1.3 could be added directly to the adjuster reading (2.05 plus 1.3 equals 3.35 on
the adjuster). A rerun through the meter should then show 100 gallons both on the meter
counter and on the prover.
If you are measuring in increments of less than 100 gallons, use this simple formula to
determine the percentage by which the adjuster must be adjusted:
(P - M) / M = A%
where P is the prover measurement, M is the meter reading, and A% is the percent adjustment
for the adjuster.