Setup & Op User guide
30
VALUES ARE FOR PROVING USE ONLY. NOT TO BE USED AS ACTUAL K-FACTORS.
LC Meter Size Revs / Gallon Pulses / Gallon Pulses / Litre
P
60 12.237 4894.8 1293.11
M/MA 5
60 4.079 1631.6 431.04
M/MA 7/10
150 5.555 2222.0 587.01
M/MA 15/25
300 2.058 823.2 217.47
M 30/40
450 0.742 296.8 78.41
M 60/80
800 0.398 159.2 42.06
MS-75
700 0.255 102.0 26.95
MS-120
1200 0.158 63.2 16.70
CALIBRATION SETUP
To prove a meter system to a product with multi-
1. With the selector switch in the calibration position,
navigate to the Calibration Setup 1 screen.
2. Use the instructions on the page 29 to run a single point
calibration.
3. Navigate to Calibration Setup 3. Move the pointer to
Linearization Mode: and select Setup.
4. Move the pointer to the BEGIN CALIBRATION
DELIVERY eld.
5. Press the EntEr button to begin the calibration delivery
into a volumetric prover. A delivery screen will appear that
shows the gross volume and ow rate.
6. To end the delivery, move the pointer to the END
CALIBRATION DELIVERY eld at the bottom of the
calibration delivery screen.
7. Move the pointer to the Prover Quantity: and
enter the quantity indicated by the volumetric prover.
8. The LCR 600 will automatically display a Point #: list
box with the numbers 1-10. Select a number.
9. The LCR 600 will then display a Linearization Flow
Rate eld edit box. Enter the ow rate of the proving run.
The percent error is calculated automatically.
Multi-Point Calibration Proving
Multi-point calibration improves the overall meter accuracy by attening out the accuracy curve across ow rates.
Although accuracy tends to lessen at lower ow rates, the repeatability of the meter remains consistent. The meter
might not be perfectly accurate at low ow rates, but it is inaccurate the same amount each time. Multi-point calibration
takes advantage of the steadfast repeatability of a Liquid Controls meter by identifying the amount of inaccuracy and
correcting it with a linearizing algorithm during deliveries. In order to apply the linearizing algorithm, the degree of error
for points along the accuracy curve must be identied by making a number of deliveries at different ow rates into a
volumetric prover. Multi-point calibration is very benecial for meter systems that experience a wide range of ow rates
(for example, trucks that ll tanks of varying sizes) and for meter systems that have recently undergone maintenance
or other alterations that could change the accuracy curve itself.
Run the rst multi-point calibration delivery at the same
ow rate used in step 2.
Keep Flow Rates Even
For the rst two proving runs, one should be near the maximum
ow rate and one near the minimum ow rate of the meter.
When choosing ow rates after the initial two proving runs, split
the difference until all points are within 0.25% of each other.
Multi-Point Calibration Tip
Proving runs are in gross volume only.