Operating Instructions
OIE 12en Edition 2019-02
39
Menu 2: General settings
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The threshold value is required for consumption
measurement when the consumer is switched off
and the circulation pump continues to run. The
threshold function is used to suppress small
amounts resulting from measuring errors.
The threshold value should be selected clearly
lower than the lowest possible consumption.
2.16 Averaging display rate
In the case of fluctuating flow rates the use of
averaging allows a stable display. Averaging can
be adapted to the requirements with values
between 1 and 10000. However, rapid changes
are only displayed with a time delay.
Examples of reaction time for a change of 99.9%
of the actual frequency jump:
No filter is active for Averaging 0 and 1. In the
case of Averaging 2–9 a continuous average-
value generation is carried out. A V
Z
1 filter is
active at Averaging 10–10000. In the process the
old measured value is weighted higher by the
averaging value than the new measured value.
Averaging of the display is also active on the
Modbus.
2.17 Deactivate alarm messages
The display of alarm messages can be
suppressed on this page.
Note:
The collective error message is then also
deactivated. The key combination SET and
ARROW LEFT (Call up alarms) also becomes
ineffective.
2.18 Maximum flow rate error message
In this menu the percentage across Q
rated
is
entered, at which the alarm message "Maximum
flow rate exceeded" is displayed. In this case
Q
rated
is always the flow rate at the highest still
valid frequency of the linearization in enu 4 + 5.
2.19 Minimum temperature Volumeter
The lowest permissible operating temperature of
the volumeter is specified in this menu. This
temperature is limited mainly by the selection of
the pick up. A drop below it results in a
corresponding error message.
Setting
Threshold value
Result
Threshold value = 0
Function is
deactivated
Threshold >
Consumption Q
□
Display in menu
1.01 = 0
□
Totaling of T1 and
T2 in menu 1.02 is
stopped.
All other values
are not influenced!
Averaging
Reaction time
0 or 1
0.02 s
2
0.04 s
9
0.18 s
10
1.5 s
500
75 s
1000
150 s
10000
1500 s
2.16 Setting
Average display
Rate average
Number values: 10
2.17 Setting
Deactivate
Alarm messages:
No
2.18 Setting
Maximum flow rate
Error message:
5 %
2.19 Setting
Minimum temperature
Volumeter:
-25 °C
