Connection Information - Siemens SIPROCESS GA700 Quick Start Manual

Connecting
6.1 Gas connections
6.1.2

Connection information

Note
Identifier of the gas connections
The identifiers of the gas connections are imprinted as numbers 1 to 4 on the module plate.
Note
Pipes
Connect the pipes with the gas connections using suitable clamping screws.
Use only such connecting parts (pipes, threaded joints, etc.) coming into contact with sample
gas that are resistant to the sample gas.
Note
Leaky gas connections
A gas-tight connection cannot be achieved if you install the clamping ring connections before
a sample gas restrictor or clamping screw was screwed onto the connecting socket. The gas
connection is then irreversibly leaky. Leaky gas paths lead to accumulation of the sample
gas in the device.
• Observe the information provided by the manufacturer of the clamping screws. Observe
the installation guidelines.
• Before you install the clamping ring connections, make sure that the connecting socket is
either equipped with a sample gas restrictor or with a clamping screw.
• Tighten the clamping screws in accordance with the mounting specifications of the
manufacturer using a suitable open-ended wrench. In the process, make sure that you
counter properly.
Note
Reference gas connection
Connection for an external reference gas pump (low pressure connection):
• The gas connections (4 and 3) are stainless steel pipes with a diameter of 6 mm.
Connection 4 (inlet) is connected to an external pump with a discharge pressure of
100 hPa to 150 hPa. Excessive reference gas flows from a module-internal bypass
restrictor out of connection 3 (outlet) into the ambient air. If the analyzer module is
installed in a tight control cabinet, connection 3 must be connected to the ambient air.
For more on this, refer to the nameplate of the analyzer module 7MB3020-xAxxx-xxxx;
the letter A is the 10th digit of the article no.
Reference gas connection (high-pressure connection)
• The reference gas connection (connection 4) is a stainless steel pipe with a diameter of
6 mm. It is suitable for pressure up to 5000 hPa (abs.).
Refer to the nameplate of the analyzer module 7MB3020-xCxxx-xxxx; the letter C or D is
the 10th digit of the article no.
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Compact Operating Instructions, 05/2018, A5E31805656-06
Quick Start