Additional programming: Industrial analog and industrial pulse Page 10/15
AC_ILR_BA_02_1805
4.4. Linearisation
(for models ILR701, ILR701T, ILR750 and ILR750T)
Indicated by 1 – 9 on the left hand side of the display, followed by a hyphen (-), this
screen allows the setting of the linearisation (in total 9 points).
Press the TOTAL button to select a digit (selected digits flash). Press RESET to
change the selected digit. The flow rate will be set in the top row of the meter and is
displayed in the unit you selected at step 9.1 (unit of measure). In the sample shown
above this would be the flow rate 0.4 liter per minute. On the bottom line of the meter
you can set in the correction of the error in %. In the sample below, the error at a flow
rate of 0,4 liter per minute would be -7,82%; to correct this, +7,82% needs to be set in
(the plus symbol [+] will not be shown).
Once the adjustment of the linearisation is completed, press and hold the TOTAL
button for one second to advance to the next linearisation point.
Number 9 at the left hand side of the display shows the 9
th
linearisation point. The
sample shows a flow rate of 250.0 liter per minute and a deviation of the flow meter of
+0,15%. To correct this error, -0,15% needs to be set as correction.
Note:
- Minimum 3 linearisation points needs to be programmed.
- The flow rates do not have to be programmed from low to high; the software will
sort the flow rates automatically, no matter at which point (1-9) they are
programmed.
To exit the programming mode:
On any screen, press and hold both the TOTAL and RESET buttons. The screen
will revert back to the programmed scale factor, and then flash. Following the three
flashes, the register display will be blank.
Note: Pressing the TOTAL or RESET buttons will turn the display back on.
Figure 13: Linearisation point 1 (of 9)
Figure 14: Linearisation point 9 (of 9)
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