l Selection of the parameter "Flow"
l Carrying out adjustment
l Select flume (linearization)
l Set scaling
l Parameter adjustment of pulse outputs
Select in the DTM window "Parameter" the option "Flow" with the
requested unit of measurement.
Min. adjustment: Enter the suitable value for 0 %, i.e. the distance
from the sensor to the medium as long as there is no flow. These are in
the following example 1.40 m.
Max. adjustment: Enter the suitable value for 100 %, i.e. the distance
from the sensor to the medium, with the max. flow volume. This is in
the following example 0.80 m.
Fig. 13: Adjustment flow measurement with V-notch
Select in the DTM window "Linearization" the option "Flow" and then
the used flume (in the above example V-notch).
Select in the DTM window "Scaling" under "Parameter" the option
"Flow". Finally the allocation of a value must be carried out, i.e. the flow
volume is assigned to the 0 and 100 % value. As the last step, select
the requested meas. unit. For above example: 0 % = 0 and 100 % =
400, meas. unit m³/h.
First of all decide if you want to use a relay and/or a current output. In
the DTM window "Outputs" you can use any of the three outputs as
long as these are not yet used for other tasks.
Finally select under "Mode" (relay) or "Output characteristics" (current
output) the option "Flow volume pulse" or "Sampling pulse". Enter
under "Pulse output all" the flow volume after which a pulse should be
outputted (e.g. 400 m³ corresponds to one pulse per hour with a flow
volume of 400 m³/h).
Parameter - Flow
Operation
Linearisation curve
Scaling
Outputs
VEGAMET 624 • 4 … 20 mA/HART signal conditioning instrument 41
8 Application examples
28969-EN-091116
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