Endress+Hauser Flowphant T DTT31 - Calibration and Learn Functions

Operating options Flowphant T DTT31, DTT35
20 Endress+Hauser
6.2.2 Navigating the Calibration (CAL) function group
Variable limits for HIF (Learn High Flow) or LOWF (Learn Low Flow) can be set with the
'Learn Function'.
• HIF setting (Learn High Flow): Enter any flow rate from 70 to 100 % of the maximum value
in the process. The device then uses this value to automatically calculate the corresponding
100 % value.
• LOWF setting (Learn Low Flow): Enter any flow rate from 0 to 20 % of the maximum value
in the process. The device then uses this value to automatically calculate the corresponding
0 % value.
B
OUT
C
E
E
CAL
HIF
RUN
LOWF
> 2 s
> 60 s
~ 10 s
WAIT
OK W432
E
80%
0%
1.
2.
3.
4.
5.
6.
7.
A0010787
 11 Navigating the 'Learn' function taking the example of the Calibration (CAL) function group
B Function selection
C Selection of settings
1. Select the "HIF" (Learn High Flow) or "LOWF" (Learn Low Flow) function with the E key.
2. Select the "RUN" function with the + key; the Learn function is initialized.
3. Select the flow rate with the + key; press for longer than 2 s.
4. If "HIF" (Learn High Flow) is set, the upper flow rate (70 to 100 %) is selected. Enter the
current relative flow rate in increments of 1 % with the + or - key (factory setting 80 %).
5. If "LOWF" (Learn Low Flow) is set, the lower flow rate (0 to 20 %) is selected. Enter the
current relative flow rate in increments of 1 % with the + or - key (factory setting 0%).
6. Select the "WAIT" function with the E key.
7. Accept ('learn') the current measured value after approx. 10 s- "OK" appears on the
display.