Siemens SITRANS LUT400 - Pmds with Exponential Flow to Head Function; Standard Weirs; Applicable Weir Profiles

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General Operation

7.11 Open Channel Monitoring (OCM)

SITRANS LUT400

124 Operating Instructions, 07/2019, A5E33329501-AC

7.11.4 PMDs with Exponential Flow to Head function

For Primary Measuring Devices (PMDs) that measure flow by an exponential equation, use

these parameters. Ensure that you use the correct exponent for your PMD; the values below

are samples only.

7.11.4.1 Standard Weirs

①

Transducer

②

3 to 4 * h

max

③

7.11.4.2 Applicable weir profiles

①

V-notch or triangular

②

Suppressed rectangular

③

Cipolleti or trapezoidal

④

Sutro or proportional

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