The volume flow is used quite often for liquids. Thevolume flow is calculated using the following
equation:
qq 1
BMB The process of determining operational density isdescribed above in the section “Current Operational
Density.”
Conversion to Velocity
www.systec-controls.de. The process for identifying the average velocity within
conduits is often used to determine pressure loss. The
velocity of a medium can be calculated using the
following formula:
Questions?
No one knows the deltaflow better than we do! Pleasetake advantage of our know-how—
we are more than pleased to be of assistance. Within
Germany we have a network of field representatives,
and our distributors in other countries are also pleased
to help you. You can find out who is located in your
area by referring to our web page:
41
BM dqv
2 The medium data for a whole series of gasses arestored in the memory of the flowcom Flow
Calculator. The flowcom performs the calculations as
described in this information booklet and does so in a
reliable and precise manner.
http://www.systec-controls.de
Or simply place a telephone call to our headquarters in
Puchheim, Germany:
systec Controls Hotline:089 - 80906 – 108
systec ControlsMess- und Regeltechnik GmbH
Lindberghstraße 4
82178 Puchheim, Germany
Phone: ++49-(0)89-80 90 60
Fax: ++49-(0)89-80 90 6 – 200 Info@systec-controls.de www.systec-controls.de In particular, the flowcom uses extensive tables to
calculate the medium densities and, for natural gas, it
comes pre-equipped with the GERG88 functional
equation.The flowcom allows for the effects of the expansionnumber, the thermal conduit expansion, as well as
other nonlinear characteristics of
industrial flowmeters.Even when used independently from the deltaflow, theflowcom can calculate and compensate for the
influences of pressure and temperature on virtually anyother flowmetering system.Because it uses a freely definable unit system, a usercan input and output any and all data in whatever
units he is comfortable with.flowcom is easy to set up under Windows.
Detailed information about the flowcom product canbe found at: deltaflow Basic Calculation Information 07/03Page7