ZOE
ZOE K04/0718
Page 27
9.5 Rate
9.5.1
Rate / Measuring rate
Parameter "Measuring rate" specifies the time interval within which the input signal is
recorded, the flow rate is calculated and brought to display. The condition of all other
outputs which depends on the flow rate (analogue output, switching outputs and status
output) will be recalculated after the measurement time.
The "sampling rate" can be increased in steps of 0.5 sec. up to 10 sec. An increase in
the sampling rate time on one hand causes increase in the filtering time of the input
signals, but also an increased reaction time in the detection of changes in the flow
values.
9.5.2
Rate / Unit
The unit displayed for the flow rate measurement can be selected from various
predefined standard units. The definition of a user-defined unit ("User") is possible,
here the „User Unit “must be programmed in Liter/min.
e.g.:
Unit: user = 100 LPM, if flow = 500 LPM then the flow rate shown on display will be 5
user.
9.5.3
Rate / Start
The parameter "start point" defines the lower flow rate limit for display and further
evaluation. If the measured flow rate lies below the measuring range value, the flow
rate is set to "0", therefore "hidden". At the same time the "underflow" icon will appear
in the display.
If the value of the parameter is set to "0", this feature is effectively disabled.
9.5.4
Rate / End
With parameter "End point", the upper measurement limit of the connected sensors /
transducers is set.
Depending on the actual flow display, the decimal point for the bigger display adjusts
itself automatically.
Flow Display
Decimal points on
the Display
0.1 to 9.9999
4
10 to 99.999
3
100 to 999.99
2
1000 to 9999.9
1
10000 to 99999
0
If the flow rate is displayed on the smaller display, the number of decimal points is
fixed to 4 and cannot be changed. However the digits before the decimal point change
themselves automatically from e.g. 0-9999 [Unit] depending upon the actual flow.
9.5.5 Rate
Measurement / Over flow value
The parameter "overflow value" is set in "% of full scale"
Example: "end point" = 100 [L / m], "overflow value" = 10 [%]
The arrow pointing upwards on the top right side of the display will
be shown when flow display shows 110 l/m.
