Siemens SITRANS F US SONOFLO SONO 3300 Handbook page 40

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SITRANS F US SONOFLO
Mass flow
User defined relationship
between sound velocity and
density
Cryogenics
Calculated mass flow
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7. Starting up
For SONO 3000 not fitted with a SENSORPROM
is done as follows:
a) Sensor ≤ DN 2000:
In the menu "MAX. RANGE" a value 10 x "MASS FLOW MAX." should be entered.
b) Sensor > DN 2000:
In the menu "MAX. RANGE" a value 5 x "MASS FLOW MAX." should be entered.
(Max. 2 x 540,000 t/h).
Select "scaled mass flow" and density engineering unit, enter the two sets of data for sound velocity
and density, mass flow engineering units and the maximum mass flow range. If the relay output is
set to indicate sound limit, the relay will make if the actual sound velocity is outside the range given
by SOUND VELOCITY 1 and SOUND VELOCITY 2, i.e indicating that the mass flow is calculated
with a density outside the defined range.
Select cryogenic, mass flow engineering unit and the maximum mass flow range.
The SONO 3000 is able to measure compensated mass flow, i.e. 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. The meter determines the actual density
by measuring the sound velocity and interpolation of the relation between density and sound
velocity.
SFIDK.PS.029.Q3.02
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unit the display indication must be formatted. It
, N and Ar. It is
2 2