VEGA VEGADIF 65 4 … 20 mA_HART - Manual (Page 52)

52
6 Adjustment with the display and adjustment module PLICSCOM
VEGADIF 65 • 4 … 20 mA/HART
36128-EN-130417
Linearization curve
Linear
Enter the requested parameters via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
Information:
When selecting flow bidirectional, the min. adjustment must be en-
tered with negative sign.
In some application, small flow quantities should not be detected.
With the creeping quantity suppression, the flow value can be sup-
pressed up to a certain % value. The default value is 5 % of the max.
flow value, corresponding to 0.25 % of the max. differential pressure
value. The limit value is 50 %. This function depends on the selected
linearization function and is only available with root extracted charac-
teristics.
The square root/bidirectional square root characteristics is very steep
at the zero point. This means that small changes in the measured
differential pressure cause big changes in the output signal. The leak
volume suppression stabilises the signal output.
The VEGADIF 65 has two internal totalizers. For both you can adjust
volume or mass as count function as well as separately the unit.
Proceed as follows:
1. Select, for example, menu item "Part sum counter".
Part sum counter
0.0000 10
00
gal
Modify settings?
2. Activate the function "Modify settings?" with [OK].
Part sum counter
▶
Effective pressure transmitter
Unit
3. Confirm with [OK] "Effective pressure transmitter".
Part sum counter
▶ Mass flow
▶ Volume flow
Without unit
4. Select the requested variable with [->] and confirm with [OK].
5. Select calibration unit of the effective pressure transmitter with
[->], for example m 3 /s and confirm with [OK].
Leak flow volume sup-
pression with flow
Total amounts counter
and subtotalizer with flow