AW Gear Meters RT-Ex15-Ex - Manual (Page 13)

AW-Lake Company 8809 Industrial Drive, Franksville, WI 53126  web: www.awgearmeters.com
 Tel: 262-884-9800  Fax: 262-884-9810  Email: [email protected]
RT-Ex15-Ex manual rev 6.13.11.docx Revision 3.3.10
13
TOTAL Display Modes
The RT-Ex15 displays the JOB or GRAND total based on the programmed KFT, engineering
unit, and decimal location. There are two TOTAL displays, TOTAL A (Job Total) and GRAND
TOTAL A. The GRAND total is a second totalizer with a secured reset. Both totals are retained
by the RT-Ex15 when the power is removed. The totals retained at power-down are updated
once every 25 seconds. Due to this update interval, the totals retained may not include previous
flow for up to 25 seconds if flow was present when the power was removed.
TOTAL A DISPLAY
Displays Job Total A. Also used for programming of total scaling factor KFT and reset of
TOTAL A and GR TOTAL A. The grand total GR TOTAL A can be viewed by using the SEL
button or magnetic switch while in the TOTAL A
display as illustrated below. The rate display
will revert back to RATE A GT if power is cycled to the RT-Ex15.
GR TOTAL A DISPLAY
For display of GR TOTAL A only. No programming or reset functions are associated with this
display.
TOTAL A RESET – The Job total can be reset using the RESET/UP magnetic switch (or the
RESET/UP button while cover is open) when TOTAL A or RAT A TOT A is displayed. Use the
MODE/DN magnetic switch or button to select a total display. TOTAL A can also be reset at
anytime using the Reset Input. See page 3 for wiring information.
GR TOTAL A RESET – The Grand total can only be reset with the cover off via the front
panel buttons using a multiple step sequence. To reset GR TOTAL A, select the TOTAL A
display mode using the MODE/DN button. Use the SEL button to change to the GR TOTAL
display. Press the RESET/UP and ENT buttons simultaneously and hold until the RT-Ex15
responds. A warning will appear on the screen requesting yes/no verification before resetting the
GR TOTAL. The RT-Ex15 prompts the user either to press the ENT button to accept the default
answer of NO and exit the reset procedure at this point, or to reset the total. To reset, use the SEL
button first to toggle the response to YES and then press the ENT button. GR TOTAL A will be
reset to zero by this operation.
TOTAL A Rollover – RT-Ex15 JOB totals will rollover to zero when the total reaches a value
of 999999 regardless of the decimal location. When a JOB total rolls over or is reset, the contents
of the JOB total are then added in memory to the GRAND total.
GR TOTAL A Rollover – To allow retention of the largest possible GRAND total before data
loss, after reaching a value of 999999 regardless of decimal location, a floating decimal feature
on GRAND TOTAL rollover automatically reduces decimal resolution by a maximum of two
decimal places before rolling over to zero and losing the total. Example: For a KFT with 4
decimal places the GRAND total will reach 9999.99 instead of 99.9999 before resetting to zero.