WIKA DPT-10 User Manual
Page 50
Information:
When the instrument is not yet adjusted, then the display pressure for
100 % corresponds to the nominal measuring range of the sensor (in
the above example 500 mbar).
2
Set the requested mbar value with [->] and [OK].
3
Confirm with [OK] and move to the menu overview with [ESC].
For an adjustment with flow, simply enter the actual measured value
indicated at the bottom of the display.
The max. adjustment is finished.
For level measurement, a linearization is necessary for all vessels in
which the vessel volume does not increase linearly with the level - e.g.
in a cylindrical or spherical tank - and the indication or output of the
volume is requested.
Respective linearisation curves are stored for these vessels. They
indicate the relation between the percentage level and the vessel
volume. By activating the suitable curve, the percentage vessel
volume is displayed correctly.
Linearisation curve
linear
Enter the requested parameter via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
In some application, small flow quantities should not be detected. With
the creeping quantity suppression, the flow value can be suppressed
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 characteristics.
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 DPT10 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".
Linearization curve with
level
Leak flow volume sup-
pression with flow
Total amounts counter
and subtotalizer with
flow
50
Differential pressure transmitter DPT10 - metal measuring diaphragm • Foundation Fieldbus
6 Adjustment with the indicating and adjustment module
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