Calculated Mass Flow - Siemens SITRANS F US SONOFLO Handbook

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SITRANS F US SONOFLO

Calculated mass flow

TOTALIZER, internal
LOW FLOW CUT-OFF
FORCED CONTROL
8. Commissioning
The SONO 3000 is able to measure compensated mass flow, i.e. the mass flow is calculated using
volume flow and density derived from sound velocity.
The relation between sound velocity and density is predefined for cryogenics O
possible to enter a user defined relationship between density and sound velocity. This is achived
by entering two sets of data for sound velocity and density, respectively. The meter determines the
density by measuring the sound velocity and interpolation of the relation between density and
sound velocity.
Select flow, direction and measuring units. By selecting bidirectional flow the net flow, i.e. the
difference between the positive and the negative flows, will be displayed.
Low flow cut-off can be set within a range of 0-9.9% of the measuring range.
Here it is possible to define the behavior of a current or frequency output in the event
of a fatal error.
By selecting:
•
"OFF" output remains on the latest valid reading.
•
"MIN." forces the output to 0%.
•
"MAX." forces the outputs to 100%.
SFIDK.PS.029.V3.02 - 521H0553
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