E119-P
Page 32 FW_E119-P_M_v0301-02_EN
7 ANALOG OUTPUT
7.1 OUTPUT
If the analog output is not used, it can be disabled to minimize power
consumption and save battery life. When the output is disabled, a current of
about 2 mA is generated and the unit can still be supplied from this signal
(provided a power supply is connected).
While powering-up the loop, the initial current is approximately 2 mA.
When the output is enabled, it can take a few seconds before the correct
current is generated.
7.2 RATE MIN (4MA)
Enter the flowrate at which the output should generate the minimum signal
(4 mA) – in most applications at flowrate “0”.
The number of decimals displayed depends on the settings in
2.3: FLOWRATE > DECIMALS.
The measuring units and the time (L/min for example) depend on the
settings in
2.1: FLOWRATE > UNIT and 2.2: FLOWRATE > TIME and are
displayed during editing.
If required, you can program the analog output 'up-side-down'. The 4 mA
then represents the maximum flowrate.
For example, enter 800 L/min.
7.3 RATE MAX (20MA)
Enter the flowrate at which the output should generate the maximum signal
(20 mA) – in most applications at maximum flow.
The number of decimals displayed depends on the settings in
2.3: FLOWRATE > DECIMALS.
The measuring units and the time (L/min for example) depend on the
settings in
2.1: FLOWRATE > UNIT and 2.2: FLOWRATE > TIME and are
displayed during editing.
If required, you can program the analog output 'up-side-down'. The 20 mA
then represents the minimum flowrate.
For example, enter 0 L/min.
7.4 FILTER
Stabilizes the analog output signal. The output value is updated 8 times a
second. This digital filter setting produces a more stable but less actual
reading. The filter principal is based on three input values: the filter level
(01-99), the last analog output value, and the last average value.
The higher the filter level, the longer the response time of a changed value.
RESPONSE TIME ON STEP CHANGE OF INPUT VALUE (IN % OF END VALUE)
Filter value 50% 75% 90% 99%
01 filter disabled filter disabled filter disabled filter disabled
02 0.1 sec 0.2 sec 0.4 sec 0.7 sec
03 0.2 sec 0.4 sec 0.6 sec 1.2 sec
05 0.4 sec 0.7 sec 1.1 sec 2.1 sec
10 0.7 sec 1.4 sec 2.2 sec 4.4 sec
20 1.4 sec 2.8 sec 4.5 sec 9 sec
30 2.1 sec 4.1 sec 7 sec 14 sec
50 3.5 sec 7 sec 11 sec 23 sec
75 5 sec 10 sec 17 sec 34 sec
99 7 sec 14 sec 23 sec 45 sec
To Next Page
Loading...
Need help?
General
