Oldham MX 52, Commissioning, Operating And Maintenance Manual

Page: 89 / 96

89
9
9
.
.
S
S
p
p
e
e
c
c
i
i
a
a
l
l
S
S
p
p
e
e
c
c
i
i
f
f
i
i
c
c
a
a
t
t
i
i
o
o
n
n
s
s
f
f
o
o
r
r
u
u
s
s
e
e
i
i
n
n
P
P
o
o
t
t
e
e
n
n
t
t
i
i
a
a
l
l
l
l
y
y
E
E
x
x
p
p
l
l
o
o
s
s
i
i
v
v
e
e
A
A
t
t
m
m
o
o
s
s
p
p
h
h
e
e
r
r
e
e
s
s
i
i
n
n
a
a
c
c
c
c
o
o
r
r
d
d
a
a
n
n
c
c
e
e
w
w
i
i
t
t
h
h
E
E
u
u
r
r
o
o
p
p
e
e
a
a
n
n
D
D
i
i
r
r
e
e
c
c
t
t
i
i
v
v
e
e
A
A
T
T
E
E
X
X
9
9
4
4
/
/
9
9
/
/
E
E
C
C
.
.
The MX52 detection device designed to measure explosive gasses and oxygen complies
with the requirements of European Directive ATEX 94/9/EC on potentially explosive atmospheres.
As a result of its metrological performance, as tested by the research and testing organisation
INERIS, the MX52 device, is classified as a safety device when used with OLDHAM CEX300 and
OLC/OLCT 20, 40, 50 and 60 series detectors. The device may therefore contribute to limiting the
risk of explosion as a consequence of the data it supplies to external units.
The information contained in the following paragraphs should be adopted and complied with
by the person responsible for the site on which the equipment is installed. Please refer to the
provisions of European Directive ATEX 1999/92/EC on improving health and safety conditions for
workers exposed to potentially explosive atmospheres.
9.1. Specifications for mechanical and electrical installation in Classified
Areas.
Installation will comply with all applicable standards, and particularly with EN 60079-14,
EN 60079-17 and EN 50281-1-2.
The MX52 device must not be subject to intense mechanical vibration and must be installed
in a safe area away from potentially explosive atmospheres.
It is essential to refer to the user and installation manuals for the gas detectors referred to
above, particularly the paragraph entitled ‘Special Specifications for use in Potentially Explosive
Atmospheres in Accordance with European Directive ATEX 94/9/EC’
Where intrinsic safety installations are concerned, it should be borne in mind that the person
responsible for IS installation (the “System Designer”) must draw up a system document
demonstrating that every aspect of the Power Cable Detector system complies with intrinsic safety.
Please refer to EN 50039 for group II and EN 50394-1 for group I when drafting this document.
9.2. Metrological Specifications
The device complies with the following European standards:
With explosive gas detectors:
- European standards EN 50054 and EN 50057 for Methane (calibration gas), Propane and
Hydrogen (gasses following response curves) where the device is used with CEX300 and
OLC/OLCT 20, 40, 50 and 60 series gas detectors. Where the device is used with other
types of sensor producing an output measurement current of 4/20 mA, these must
comply with paragraph 1.5 of Appendix II of the ATEX 94/9/EC Directive and be
compatible with their characteristics (cf. device transfer curve).
- European Standard EN 50271