Liquid Controls LCR 600 Setup & Op - Manual (Page 29)

29
Single point calibration proving
To single point calibrate a product, the LCR 600 must make a delivery into a volumetric prover. The measurement
indicated by the volumetric prover is then entered into the LCR 600 to set the k-factor (pulses/unit). The new k-factor
establishes the number of pulses the LCR 600’s internal pulser registers for each unit of measurement that passes
through the meter (for example, 205.8 pulses for every gallon). When proving for use in Weights and Measures
applications, a qualified Weights and Measures technician must prove the meter.
Run the calibration delivery at the same flow rate of a
typical delivery.
Keep flow Rates Even
calIbratIon Setup
packing the hose
If you are proving the meter with a hose and a nozzle, you will want to make sure the hose is packed before beginning
the proving delivery. This will ensure the same shut off point at the beginning and end of the delivery.
To pack the hose:
1. Turn the selector switch to RUN—do not open the hose
nozzle. The display will reset and the solenoid will open
the valve, packing the hose.
2. When the display has stopped incrementing, the hose is
packed.
3. Turn the selector switch to STOP. This will de-energize
the solenoid, close the valve, and reset the display.
4. Turn the selector switch to the calibration position and
follow the proving instructions.
Prover Quantity list box
with volumetric prover measurement
Calibration Delivery Screen
to prove a meter system with single point
calibration:
1. With the selector switch in the calibration position,
navigate to the Calibration Setup 1 screen.
2. Select the Calibration #: to be proved.
3. Move the pointer  to Linearization Mode: and
select Setup.
4. Enter a k-Factor that approximates the size of the meter
being calibrated.
See table on page 30.
5. Move the pointer
 to the BeGIN CALIBRATION
deLIVeRY
field.
6. Press the EntEr button to begin the calibration delivery
into a volumetric prover. A delivery screen will appear that
shows the gross volume and flow rate.
7. Move the pointer  to the eNd CALIBRATION
deLIVeRY
field, at the bottom of the calibration delivery
screen, and press EntEr to end the delivery.
8. Move the pointer
 to the Prover Quantity: and
enter the quantity indicated by the volumetric prover.
The LCR 600 will automatically adjust the value in the
Pulses/Unit
field to the correct value.
9. Repeat step 5 through 8. Check the prover volume and
the LCR 600 volume. If they are not within tolerance
limits, reprove the meter.
Proving can only be done in gross volume.