Operation
DTT31, DTT35
14
Hauser
5.1.2
Navigating the Calibration function group (CAL)
Variable limits for HIF (Learn High Flow) or LOWF (Learn Low Flow) can be configured using
the 'Learn' function.
• HIF configuration (Learn High Flow): Enter a random flow rate between 70% and 100% of
the maximum value in the process. The measuring device uses this value to automatically cal-
culate the corresponding 100% value.
• LOWF configuration (Learn Low Flow): Enter a random flow rate between 0% and 20% of the
maximum value in the process. The measuring device uses this value to automatically calcu-
late the corresponding 0% value.
a0005785
Fig. 13: Navigating the 'Learn' function using the Calibration (CAL) function group as an example
B Select function
m
Select the HIF (Learn High Flow) or LOWF (Learn Low Flow) function with the E key
C Select settings
n
Select the "RUN" function with the + key, 'Learn' function is initialized
o
Select the flow rate with the + key, press for longer than 2 s:
– If the HIF is configured (Learn High Flow), the upper flow rate (70% - 100%) is selected. Enter the cur-
rent relative flow rate in increments of 1% with the + or - key (factory setting 80%).
– If the LOWF is configured (Learn Low Flow), the lower flow rate (0% - 20%) is selected. Enter the cur-
rent relative flow rate in increments of 1% with the + or - key (factory setting 0%).
p
Select the "WAIT" function with the E key
q
Accept ('Learn') the current measured value after approx. 10 s - "OK" appears on the display
r
Or: The message "W432" appears on the display after 60 s
– A sufficiently stable flow rate was not detected during the learning process. The system takes an average
of the 10 values last measured during the learning process.
s
Return to the CAL function group (Home position) with the E key
!
Note!
The device is still operative if message W432 appears. There can be large measuring uncertain-
ties however. Recommendation: Repeat 'Learn' process (points 1 to 4) until "OK" appears on the
display.
