Liquid Controls LectroCount LCR-II E36 Series Setup & Operation page 57

APPENDIX E
- WEIGHTS & MEASURES PROVER GUIDE
Weights & Measures Prover Guide
This guide has been created to clearly convey the method for proving a meter system equipped with a LectroCount
LCR-II electronic register without the use of a Lap Pad or external data entry device. This guide will only cover the
software features of the LCR-II in the calibration/prover mode.
The following method provides a means to check the overall meter accuracy as well as adjust the meter's "k-Factor".
The k-Factor moves the entire meter accuracy curve either up or down. If it is believed that the meter curve itself
may have changed (e.g. when a measuring chamber is replaced), and it is desired to use and/or change multi-point
calibration, a Lap Pad or other data entry device must be used per the Set-Up & Operation Manual.
The LCR-II must initially be set-up and calibrated using a Lap Pad or data entry device. Once this has been
accomplished, the LCR-II can be proved without using such a device. Only products with a valid pulse/unit (k-Factor)
can be recalibrated using this feature.
To calibrate a flowmeter with the LCR-II:
1. Remove the Switch Plate cover.
Turn the Selector Switch to the calibration/prover position. This is accomplished by rotating the Selector Switch counter¬
2.
clockwise to the 6:00 position.
The display will show "000.000". This represents the delivered volume as recorded by the register. The current calibration
3.
settings will be printed on a ticket.
Press the SELECT button one time. The display will show "Prod 1". Press INCREASE to select from the programmed
4.
products
(Prod 1 to Prod 4). Only products that have been previously set-up and calibrated will be displayed. If only one product has
been calibrated, only one Prod # will be available.
5. When the desired product number is displayed, press SELECT. The display will advance to Flowrate, "F 0.0".
Press SELECT and the display will advance to Temperature, " 42.5 °F". If a temperature probe is not installed, the display will
6.
show "999.9 °F".
7. Press SELECT and the display will return to "000.000".
To start a delivery, press the INCREASE button one time. This takes the display through an "all segments and blanks" test
8.
and starts a delivery by activating the solenoid valve controls. (All segments and blanks: "8.8:8.8:8.8"). If the register display
remains at zero, open the hose nozzle and begin to fill the proven If the register did not remain at zero (the hose needed to
be
packed), leave the pump running and press the INCREASE button to stop the delivery. Then press the SELECT button until
the display digits no longer flash. Press the INCREASE button on the LCR-II to start the actual delivery with a packed hose.
Open the hose nozzle and start to fill the proven
9. Once the prover is filled to the desired volume, close the hose nozzle and press the INCREASE button on the LCR-II to
deactivate the solenoid controls and end the delivery.
10. If it is determined that no change to the meter k-Factor is desired, turn the Selector Switch clock-wise to exit the calibration/
prover mode. Proving is complete. If it is determined that a change to the meter k-Factor is desired, use the INCREASE and
SELECT buttons on the LCR-II to adjust the value on the register to match the volume of the proven The following page
contains an example.
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