Emerson daniel 1500 series, Руководство пользователя

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4.3.1 Orientation and position of the turbine meter
Flow direction
Turbine meters can be used for uni-directional or bi-directional flows. The design of the
internal features of the meter housing and the internal components depend on the desired
configuration. Install the LTM carefully so it complies with the correct inlet and outlet sides
(See label on the turbine meter for inlet direction).
Flow conditioning
The flow stream must be free of swirl for a turbine meter to perform consistently and
accurately. The internal assembly supports of a turbine meter offer a slight straightening
effect. If additional flow conditioning is required, use straightening vanes or tube bundles.
Refer to API MPMS, Chapter 5, Section 3.
A flow conditioning plate is available for all standard series 1500 LTM, NPS 3 through 8. It is
designed to eliminate product flow characteristics such as liquid swirl and non-uniform
velocity profiles (induced by piping configurations and other elements of the system) that
may impede accurate measurement within the turbine meter run.
The plate is installed directly into the inlet of the turbine meter. Due to the flow
conditioning influence on the incoming product, the need for upstream flow straightening
piping is reduced. It is recommended that a minimum of five pipe diameters be
maintained upstream and downstream of the turbine meter to ensure accurate operation.
Actual length is determined by piping requirements specific to the application.
Prepare the turbine meter for use
46 Daniel Series 1500 Liquid Turbine Meter, NPS 3-24