Place of installation / zone Sample gas non-ammable
below
the lower explosive limit
LEL (25% of LEL)
Flammable sample gas Sample gas is ammable
and/or is
occasionally above the LEL
(25% of LEL)
ATEX II 3G (Zone 2)
Analyzer
Ex analyzer Ex ec
(Certicate BVS 18 ATEX E 084
X,
BVS 15 ATEX E 007 X and IE‐
CEx BVS 15.0007X) (installa‐
tion in suitable
enclosure with type of protec‐
tion ec, IP54 according to
EN/IEC 60079-0 and
EN/IEC 60079-7); pollution
degree 2
Ex analyzer Ex ec
(Certicate BVS 18 ATEX E 084
X,
BVS 15 ATEX E 007 X and IE‐
CEx BVS 15.0007X) (installa‐
tion in suitable
enclosure with type of protec‐
tion ec,
IP54 according to EN/IEC
60079-0 and EN/IEC
60079-7); pollution degree 2
• OXYMAT 7, ULTRAMAT 7
and CALOMAT 7 can be
used
• Reference gas OXYMAT 7
only N2 with min. 2.2 bar
rel.
• Reference gas OXYMAT 7
must be monitored
Ex analyzer Ex ec
(Certicate BVS 18 ATEX E 084
X and
IECEx BVS 15.0007X) (instal‐
lation in suitable enclosure
with type of protection ec,
IP54 according to EN/IEC
60079-0 and EN/IEC
60079-7); pollution degree 2
• CALOMAT 7 and ULTRA‐
MAT 7 can be used
Flame arrestor Not required Not required
Recommended for OXYMAT 7
Not required
Purging Not required Required: Air exchange of at
least 5 times the enclosure
volume per hour, but at least
164 l/h must be ensured
Required: Air exchange of at
least 5 times the enclosure
volume per hour, but at least
164 l/h must be ensured
Device protection level (EPL) Gc (EPL) Gc (EPL) Gb/Gc
Non-hazardous zone
Analyzer Non-Ex analyzer Non-Ex analyzer Non-Ex analyzer
Gas path Gas path with hoses or pipes
• Pipe gas path
• Seals FFKM (option B04
for ULTRAMAT 7 and OXY‐
MAT 7)
• Regular leak test as descri‐
bed in the manual
• Evaluation regarding pos‐
sible zone displacement
must be performed by the
operator on site
• Pipe gas path
• Seals FFKM (option B04
for ULTRAMAT 7 and OXY‐
MAT 7)
• Regular leak test as descri‐
bed in the manual
• Evaluation regarding pos‐
sible zone displacement
must be performed by the
operator on site
Flame arrestor Not required Recommended Recommended
Purging Not required Required: Air exchange of at
least 5 times the enclosure
volume per hour, but at least
164 l/h must be ensured
Required: Air exchange of at
least 5 times the enclosure
volume per hour, but at least
164 l/h must be ensured
Installing/mounting
3.1Basic safety notes
SIPROCESS GA700 rack and wall mounted devices
30 Compact Operating Instructions, 06/2023, A5E35134047-AB