9
8150 Flow Totalizer
9. AutoCAL
Calibration
The AutoCAL feature allows theTotalizer to be adjusted to match the ow rate to any external reference.
•
Flow in the pipe should be as stable as possible for best results.
•
If the ow rate display is erratic, set the SPEED (section 14) to 120 seconds during the AutoCAL procedure.
•
The timebase on the reference meter must be the same as the 8150 Totalizer.
Example: The
Totalizer
fl ow rate shows 60 GPM, while an external reference indicates a true fl ow rate of 70 GPM.
Change
the
fl ow rate from 60 GPM to 70 GPM using AutoCAL.
1. Hold the ENTER key for 2 seconds, then enter the SECURITY CODE.
AutoCAL is the rst item in the menu.
2. Press the RIGHT key to select the AutoCAL function.
The display will show AutoCAL and the current ow rate will be ashing.
3. Press the RIGHT key again to change the ow rate. The display shows "Set Flo" and the rst digit of the ow rate will begin
ashing.
5. Press the RIGHT key to advance the ashing element to the "6".
5. Press the UP key one time to change the "6" to "7".
6. Press the ENTER key to complete the automatic calibration process.
The display shows a new K-Factor with the rst digit ashing. This K-Factor is based on the change in ow rate.
7. Press the ENTER key again to accept the new value.
NOTE:
If the display shows
"ERR SetFlo"
the procedure was unsuccessful because the calculated K-Factor is less than 0.001 or
greater than 999999. Verify the ow rate and start the AutoCAL procedure from step 1.
8. Press UP and DOWN keys together to store the new value in the memory.
The display will show "storing" for a few seconds, then return to normal operation.
8
7
ENTER
Enter security code
ENTER
ENTER
Signet Total Flow
Signet Total Flow
Signet Total Flow
1
2 s
2
3
5
6
4
