Liquid Controls WinHost Operation - Manual (Page 31)

31
Single-Point Calibration
Performing Single-point Calibration requires the use of
a volumetric prover or other calibrated device with which
to compare the meter delivery quantity against a stan-
dard.
Since the rest of the Product Calibration information has
been entered, this calibration procedure is ready to pro-
ceed.
As describe on Page 28, Pulse/Unit represents the num-
ber of pulses that the LectroCount counts per unit of vol-
ume. Since the unit may not have been previously cali-
brated, leave the value set to “100.000000”, or enter the
nominal value of pulses/unit for that meter size. For ex-
ample, a Liquid Controls M7 with a 1:1 packing gland will
produce a nominal 2,200 pulses per unit.
1. With the selector switch in calibration position, click
on RUN under Command Issue.
2. Fill a reliable Volumetric Prover. Prover Quantity and
Gross Quantity will increment as the product is dis-
pensed into the prover. This reading is based on the
existing value for Pulse/Unit.
3. After the prover has been filled, click on PRINT un-
der Command Issue.
4. Enter the exact prover reading in the Prove Quantity
field in place of the current value. The Pulse/Unit
field will update based on the information entered.
5. Repeat Steps 1 through 3 to verify calibration. If the
value read by the meter does not match the volume
measured by the prover, re-enter the Prover Quan-
tity value with the new reading and repeat Steps 1
through 3 until the prover quantity and meter quan-
tity are equal.