Siemens 7MB3000 Series Operating Instructions Manual

Also see for SIPROCESS GA700: Compact operating instructions Quick start Operating instructions Operating instructions Compact operating instructions

8.1.2 Connection informationNoteIdentifier of the gas connectionsThe identifiers of the gas connections are imprinted as numbers 1 to 4 on the module plate.NotePipesConnect the pipes with the gas connections using suitable clamping screws.Use only such connecting parts (pipes, threaded joints, etc.) coming into contact with samplegas that are resistant to the sample gas.NoteLeaky gas connectionsA gas-tight connection cannot be achieved if you install the clamping ring connections beforea sample gas restrictor or clamping screw was screwed onto the connecting socket. The gasconnection is then irreversibly leaky. Leaky gas paths lead to accumulation of the sample gas inthe device.• Observe the information provided by the manufacturer of the clamping screws. Observe theinstallation guidelines.• Before you install the clamping ring connections, make sure that the connecting socket iseither equipped with a sample gas restrictor or with a clamping screw.• Tighten the clamping screws in accordance with the mounting specifications of themanufacturer using a suitable open-ended wrench. In the process, make sure that youcounter properly.NoteReference gas connectionConnection 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. Connection4 (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; theletter A is the 9th digit of the article number.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 the9th digit of the article number.Connecting the device8.1 Gas connectionsWall-mounted device92 Operating Instructions, 07/2023, A5E31930403-AB