How To Mechanically Calibrate The Sb-100 Meter - Bennett 3000 Series Operator's Manual

HOW TO MECHANICALLY CALIBRATE THE SB-100 METER (M-CAL OPTION)
The Bennett SB-100 Meter is built to maintain accurate measurement under normal operating conditions. The meter is a
positive displacement device with rods and pistons, which require a break in period. The meter is calibrated at the factory
using a solvent for safety purposes, and must be calibrated after it has been installed. We strongly suggest recalibration of
the meter after a 90 day break in period.
Each SB-100 meter is provided with the following calibration
information:
•
The dial adjusting cover has (+) and (-) arrows to indicate
the correct direction to rotate the dial to either increase or
decrease delivery.
•
A self-adhesive metal label listing the minimum
incremental adjustment is attached to the collector
housing immediately above the adjusting dial.
The dial cover has two pin hubs, one to the left of the shaft and
one to the right. The seal pin may be inserted in either hub.
See Figure 21. The smallest adjustment (.6 cu. in.) occurs
when the pin is pulled from one side and inserted in the other
side by moving the dial the least amount or half a hole. A 1.2
cu. in. adjustment is made by pulling the pin and turning the
dial until the next adjacent hole aligns with the same hub and
reinserting the pin.
To calibrate the meter, follow this procedure:
1. Measure the actual delivery of the meter at fast flow in an
accurate test measure. Dispense a minimum of 5 gallons
(20 liters).
2. Cut and remove the existing seal wires and remove the
seal pin. See Figure 22.
3. Turn the dial the necessary amount in the (+) or (-)
direction to increase or decrease the quantity of fuel
delivered.
4. Re-insert the seal pin in the desired pin hub.
5. Dispense 5 gallons (20 liters) of fuel to allow the meter to
adjust to the new settings. Do not make any adjustments
based on this delivery.
6. Make sure the meter is properly calibrated. Dispense
another 5 gallons (20 liters) of fuel into an official test
measure to check the calibration.
3000 Series Retail Operators Manual 108796 Rev C, 07/05
40
1. A fast flow test at 11 GPM shows a +3 cu. in.
reading in a five gallon test measure.
2. Remove the existing seal and pin and turn the
dial clockwise (-)five minimum adjustments
(half holes) and reinsert the pin.
3 cu. in.
.6 cu. in./adjustment
3. Test and reseal.
1. A fast flow test at 11 GPM shows a -2 cu. in.
reading in a five gallon test measure.
2. Remove the existing seal and pin and turn the
dial counterclockwise
adjustments (half holes) and reinsert the pin.
2 cu. in.
.6 cu. in./adjustment
3. Test and reseal
Example 1
= 5 half holes (-)CW
Example 2
(+) three minimum
= 3 half holes (+) CCW