Operating instructions

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.
100% 0,80m (d)
=
400m
3
/h
=
0% 1,40m (d)
=
0m
3
/h
=
Fig. 11: 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
Adjustment
Linearization curve
Scaling
Outputs
44 VEGAMET 625 - Double channel Hart signal conditioning instrument
Application examples
28970-EN-050616