Siemens MicroSAM Operating Instructions Manual page 16

General information
2.4 Protection against explosion
Table 2- 1 Case examples for explosion protection
Case Concen- Transient
no. tration of concen-
oxygen tration of
in normal oxygen
operation (not normal
operation)
1 0 ... 2 % 0 ... 2 %
2 0 ... 2 % 0 ... 21 %
3 0 ... 21 0 ... 21 %
%
4 0 ... 4 % 0 ... 4 %
x = applies to the product
Identification of explosion protection
The gas chromatograph has a flameproof enclosure. With the flameproof enclosure, the
housing resists an internal explosion pressure.
The housing of your gas chromatograph has a rating plate which identifies the explosion
protection.
This device is approved for a sample gas inlet pressure of 1.6 bar absolute (160 kPa) in
accordance with ATEX II 2 G Ex d IIC T4.
14
Permis Sample External
sible pressure flame
carrier (absolute) arrester
gases
H , He, 1.0 ... 1.6 bar Not
2
N , Ar required
2
H , He, 1.0 ... 1.6 bar Not
2
N , Ar necessary
2
H , He, 1.0 ... 1.1 bar Required
2
N , Ar
2
He, N , 1.0 ... 7 bar Not
2
Ar necessary
Substances Process
that are medium
explosive zone x
under
exclusion of
oxygen
Not allowed Not
explosive
Not allowed; Zone 1
with the
exception of
acetylene
and ethylene
oxide up to
Zone 0
100%
Not allowed Zone 1
Operating Instructions, 06/2012, C79000-G5376-C560-07
MicroSAM SITRANS
(7KQ3101) CV
(7KQ3105)
x x
x
x
x
MicroSAM