Liquid Controls LCR Setup & Operation - Manual (Page 58)

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This guide has been created to clearly convey the method for proving a meter system equipped with a LectroCount
LCR 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 in the calibration/prover mode.
NOTE
: 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 dat a entry device must be used per the Set-Up &
Operation Manual.
The LCR must initially be set-up and calibrated using a Lap Pad or dat a entry device. Once this has been accomplished,
the LCR can be proved without using such a device. Only product s with a valid pulse/unit (k-Factor) can be recalibrated
using this feature.
1. Remove the Switch Plate cover.
2. Turn the Selector Switch to the calibration/prover position. This is accomplished by rot ating the Selector Switch
counter-clockwise to the 6:00 position.
3. The display will show " 000.000". This represents the delivered volume as recorded by the register . The current
calibration settings will be printed on a ticket.
4. Press the SELECT button one time. The display will show "Prod 1". Press INCREASE to select from the programmed
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".
6. Press SELECT and the display will advance to Temperature, " 42.5 ºF". If a temperature probe is not installed, the
display will show "999.9 ºF".
7. Press SELECT and the display will return to "000.000".
8. To start a delivery, press the INCREASE button one time. This takes the display through an "all segments and
blanks" test and starts a delivery by activating the solenoid valve controls. (All segment s and blanks: "8.8:8.8:8.8").
If the register display remains at zero, open the hose nozzle and begin to fill the prover . 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 to start the actual delivery with a packed hose. Open the hose nozzle and start to fill the prover.
9. Once the prover is filled to the desired volume, close the hose nozzle and press the INCREASE button on the LCR
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 to adjust the value on the register to match the volume of the
prover. The following page contains an example.
Appendix E - Weights & Measures Prover Guide