Siemens SIPROCESS GA700 Compact Operating Instructions page 28

Installing/mounting
3.1 Basic safety notes
Place of installation / zone
ATEX II 3G (Zone 2)
Analyzer/type of protection
Flame arrestor
Monitoring
Device protection level
ATEX II 3D (Zone 22)
Analyzer/type of protection
Flame arrestor
Monitoring
Device protection level
Non-hazardous zone
Analyzer
Gas path
28
Sample gas non-flammable below the
lower explosive limit LEL (25% of LEL)
Ex analyzer Ex p
Overpressure encapsulation type of pro‐
tection, "Continuous purging" operation
mode (Certificate BVS 14 ATEX E 153 X
and IECEx BVS 14.0104X) or Ex analyzer
Ex ec type of protection "Increased Safe‐
ty" (Certificate BVS 14 ATEX E 154 X, BVS
14 ATEX E 153 X and IECEx BVS
14.0104X)
Not required
Approved px, py or pz monitoring system
or without monitoring system for Ex ec
(EPL) Gb
Ex analyzer Ex p or tc (Variant G)
Overpressure encapsulation type of pro‐
tection, "Continuous purging" operation
mode
or type of protection dust protection by
enclosure
(Certificate BVS 14 ATEX E 153 X and IE‐
CEx BVS 14.0104X)
Not required
Approved px, py or pz monitoring system
or no monitoring system for Ex tc
(EPL) Dc
Standard analyzer
Pipe or hose gas path
Sample gas is flammable and/or is oc‐
casionally above the LEL (25% of LEL)
Ex analyzer Ex p
Overpressure encapsulation type of pro‐
tection, "Continuous purging" operation
mode (Certificate BVS 14 ATEX E 153 X
and IECEx BVS 14.0104X)
For OXYMAT 7: Flame arrestor in sample
gas and reference gas paths:
Approved px or py1 monitoring system;
px recommended: Option E72
For OXYMAT 7 high-temperature ver‐
sion: Approved px monitoring system
(EPL) Gb
Ex analyzer Ex p (Variant G)
Overpressure encapsulation type of pro‐
tection, "Continuous purging" operation
mode
(Certificate BVS 14 ATEX E 153 X and IE‐
CEx BVS 14.0104X)
For OXYMAT 7: Flame arrestor in sample
gas and reference gas paths:
Approved px or py1) monitoring system;
px recommended:
Option E72
For OXYMAT 7 high-temperature ver‐
sion:
Approved px monitoring system
(EPL) Dc/Gb
Standard analyzer
• Pipe gas path
• Seals FFKM (option B04 for ULTRA‐
MAT 7 and OXYMAT 7)
Enclosure purging with air or inert gas
(N2):1 Nl/min
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB