Siemens ULTRAMAT 6 Series - ULTRAMAT 23 CSA General; ULTRAMAT 23 CSA with Option E21; Safety Instructions for the Introduction of Combustible Gases

2.4.2 ULTRAMAT 23 CSA general
The device is suitable for installation in devices which are permitted by CSA.
2.4.3 ULTRAMAT 23 CSA with option E21
The sample gas exhaust lines must terminate outside the hazardous area at a harmless location.
The sample gas exhaust line can also be returned to the sampling point.
Ensure that the device is operated without pressure at the sample gas outlet.
For the introduction of 󹪞ammable gases, purging with inert gas or comparable measures to
avoid an explosive atmosphere are recommended, because devices with seals are considered
devices with limited release according to international standards.
WARNING
Risk of explosion due to accumulation of 󹪞ammable gases
When the device is installed in an enclosure, an air exchange rate of at least once per hour must
be ensured.
WARNING
Flammable components in sample gas
If the sample gas could contain 󹪞ammable components, we recommend that you only use
devices with option - E21.
2.4.4 Safety instructions for the introduction of combustible gases
The maximum permissible sample gas pressure in the analyzer depends on the device version
and is described in the section Technical speci󹪝cations (Page51) under the item "Gas inlet
conditions".
You must perform a leak test following all installation and maintenance work a󹪜ecting the
containment system.
This leak test must be performed at regular intervals.
Safety instructions
2.4Analyzers in hazardous areas
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 19