Thermo Scientific Sarasota FD900, Руководство пользователя

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Thermo Fisher Scientific User Guide for Sarasota ID900, FD900, & PD900 Gas Density Meters
2-11
Installation
Sarasota PD900
Sarasota PD900
When preparing to install the Sarasota PD900, reference the dimensional
drawing below and the following sections.
Figure 2–10.
Sarasota PD900 dimensional drawing
Temperature
Considerations
To obtain the most accurate results, density should be measured at the
pipeline temperature. Therefore, the meter and its supply pipeline should
be in close thermal contact with the pipeline and insulated from ambient
conditions.
Conduction from the pipeline through the pocket wall is improved by the
addition of the silicone heat transfer fluid. Cladding of the pipe wall and/or
the parts of the pocket and the density meter that protrude from the
pipeline is essential.
To ensure the fluid temperature in the bypass is the same as the
temperature of the pipe wall, and therefore as close as possible to the
temperature of the fluid in the main line, two further actions are required:
1. Keep the valve between the meter and the density sample point very
well insulated and fully open. If the valve is fully open, temperature
changes at the vale are prevented.