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