Safety Instructions For Hazardous Areas; Connection Information - Siemens SIPROCESS GA700 Compact Operating Instructions

Connecting
5.1 Gas connections
5.1.2

Safety instructions for hazardous areas

Introduction of combustible or occasionally explosive media in OXYMAT 7
Explosion hazard
The introduction of combustible and/or occasionally explosive media in OXYMAT 7 can
lead to an explosion.
• Install suitable flame arresters in the sample gas and reference gas paths directly at the
Loose lines or open purging gas connections at the wall-mounted device (operation with
types of protection Ex t and Ex ec)
Danger of explosion in hazardous areas
In the case of operation with the types of protection Ex t and Ex ec, purging gas
connections (connection nozzles) must always be closed.
• Close all openings, such as purging gas connections, with Swagelok pipe plugs (SS-
• Ensure sure that all lines to be connected are secured in place.
5.1.3

Connection information

Pipe connections
The gas paths in explosion-proof devices are implemented with pipes.
Gas connection
Sample gas
Reference gas
Identifier of the gas connections
The identifier of the gas connections is imprinted as numbers 1 to 4 on the module plate.
32
DANGER
device.
WARNING
12MO-C, included in scope of delivery).
Material
Stainless steel Mat. No. 1.4404
or Hastelloy Material No. 2.4819
Stainless steel Mat. No. 1.4404
Compact Operating Instructions, 05/2018, A5E35134047-03
Connection external diameter
6 mm
6 mm
Devices in explosion-proof design