Baker Hughes Panametrics Sentinel LCT8, User Manual

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2.4 Mechanical installation
Being mindful of the Installation precautions on page 6 ,
complete the following steps:
1. Make sure the gaskets are in place on the flanges.
2. Support the
Sentinel LCT8 between the flanges on
the pipe.
3. Align the flange mounting holes as shown in
Figure 10 below.
4. Secure the meter to the pipe by using the
appropriate hardware.
Figure 10: Sentinel LCT8 mounting flange
2.4.1 Standard installation recommendations
2.4.1.1 Installation location
Proper installation of the Sentinel LCT8 is important to
achieve maximum performance from the system. The
following installation recommendations provide general
guidelines of how this system should be installed. If the
following recommendations cannot be met, please consult
the factory for a more detailed review of the application to
see what performance may be achievable. Following these
recommendations may not be the solution for all situations,
since every installation is different.
2.4.1.2 Straight pipe run requirements
The Sentinel LCT8 should be installed to meet one of the
following condition:
• A minimum of 5 nominal pipe diameters upstream
of the metering section (pressure vessel) and a minimum
of 3 nominal pipe diameters downstream.
For any other straight run configurations, consult
Panametrics for an application assessment.
2.4.1.3 Flow direction - straight pipe run differences
For both uni-directional and bi-directional flow, the user
must provide the minimum straight pipe runs upstream and
downstream from the flowcell, as shown in Figure 11 below.
Any additional length of straight pipe run will help produce
a more symmetrical flow profile, thus further reducing
measurement uncertainty.
Bi-directional flow
3D
Note: temperature and pressure transmitters should
Be located elsewhere for bi-directional installations.
Uni-directional flow
5D upstream 3D downstream
min.
D 5 D 5
Temperature/pressure transmitters
Figure 11: Minimum straight pipe runs for Sentinel LCT8 installations
2.4.1.4 Inner diameter matching
To maintain optimal product performance, the inner
diameter of the upstream sections should be within 0.5%
of the metering section inner diameter at the flange. The
downstream matching is not as critical but should be of
the same schedule and matched as closely as possible.
In addition, gaskets should not protrude past the inner
diameter to disrupt the flow profile.
2.4.1.5 Location of temperature and pressure
measurements
Temperature and pressure measurements should always
made downstream of the Sentinel LCT8 and be located a
minimum of 3D downstream of the pressure vessel, with
a preferred distance of 5D downstream. For any other
locations for temperature and pressure measurement
consult Panametrics for an application assessment.
2.4.1.6 Calibration recommendations
In general, the best practice is to calibrate as much of
the measuring section as possible. This would include
upstream and downstream straight pipe runs and the
Sentinel LCT8 . While this is not always possible or cost
effective, it will provide the best transferability from
calibration to field usage. This methodology is highly
recommended for custody transfer master meter and duty
systems to maintain the lowest possible system uncertainty.
Each application is different and requires a customized
calibration plan. For calibration recommendations, consult
the factory for an application assessment.
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