Siemens GC..M.. Manual de instalación descargar pdf (Pagina 25)

Utility Gas Supply Installation, Continued

Figure 2-4. Automatically Switched Carrier Gas Cylinders

Calibration Standard Supply Installation

The Calibration Standard Supply required is specified in the "Notes" block on the Block Diagram Utility

Connections sheet contained in the Application Drawing Package.

Mounting

Always mount the calibration standard cylinder as close to the analyzer as practical. When installing

calibration standard cylinders, always use new, clean, ¼” (.635 cm) stainless steel tubing and fittings for

the line between the cylinder and the analyzer. Before connecting the line to the cylinder, blow it out with

a clean, dry, inert gas and cap the open end of the tubing.

A certified calibration standard may be purchased from Siemens or another supplier. If Siemens supplies

the calibration standard, it will be noted in the "Notes" block on the Block Diagram Utility Connections

sheet contained in the Application Drawing Package.

Heat Tracing

Some vapor standards must be heated to prevent condensation. If heat tracing is required, it will be noted

in the "Notes" block on the Block Diagram Utility Connections sheet contained in the Application Drawing

Package.

When heat tracing is used, it is essential that none of the tubing be exposed to ambient conditions. Steam

tracing must be continuously sloped downward for draining any condensate, and it must have condensate

traps at any low points.

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Siemens GC..M.. Manual de instalación Pagina 25