Basic Setup (2.15.3.) - Siemens SITRANS LUT400 Operating Instructions Manual

9.2.15.3

Basic Setup (2.15.3.)

Method of Flow Calculation (2.15.3.1.)
Sets the method of flow calculation.
Options
Set this parameter to Ratiometric only if the primary measuring device (PMD) supports
ratiometric calculations. (Note that Palmer Bowlus Flume and H-Flume support ratiometric
calculations only.) For more details on Absolute and Ratiometric calculations, see Method of
Flow Calculation (Page 302).
Flow Exponent (2.15.3.2.)
The exponent for the flow calculation formula.
Values
Use this parameter if the PMD is set to Exponential devices. It creates an exponential curve
with end points set by Maximum Head (2.15.3.3.) (Page 232) and Zero Head Offset
(2.15.3.5.) (Page 233) and with the curve based on the specified exponent.
①
The exponential equation is:
Q = KH
Where:
SITRANS LUT400
Operating Instructions, 07/2019, A5E33329501-AC
Flow exponent
Flow Exponent (2.15.3.2.)
*
Range: -999.000 to 9999.000
Default: 1.550
ABSOLUTE
RATIOMETRIC
231