Safety Notes For Ex E Or Ex Py Devices; Gas Connections; Connection Information - Siemens SIPROCESS GA700 Compact Operating Instructions

4.3

Safety notes for Ex e or Ex py devices

Explosion hazard due to incorrect infeed
The use of Power over Ethernet (PoE) is not permitted.
• Only connect the device to an Ethernet without power supply.
4.4

Gas connections

4.4.1

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.
Sample gas preparation
The sample gas must be conditioned to prevent contamination of the parts through which it
flows. We recommend the following minimum configuration:
• Gas sampling device with filter
• Sample gas cooler
• Analyzer filter, medium pore size <10 µm
Depending on the characteristics of the sample gas it may be necessary to provide additional
equipment, for example, an external gas suction pump, washing bottle or pressure reducer.
In the case of toxic, aggressive and/or flammable gases ensure that the components are
suitable for use. They must be approved for the respective application.
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB
WARNING
Material
Stainless steel Mat. No. 1.4404
or Hastelloy Material No. 2.4819.
Stainless steel Mat. No. 1.4404
Connecting
4.4 Gas connections
Connection external diameter
6 mm (0.23")
6 mm (0.23")
41