APPENDIX 1
Installation in USA
A1.0 Factory Mutual Certification
For installations in the USA the BR385 sounder has the following FM
intrinsic safety certification;
CLI; Div 1; Gp A, B, C & D T4 Ta = 60°C Entity IP66
CLI; Zone 0; AEx ia IIC T4 Ta = 60°C Entity IP66
The FM Certificate of Compliance 3027157 and the associated BEKA
Control Drawing CI385-32 may be downloaded from www.beka.co.uk, or
requested from the BEKA sales office or our US agent Exloc Instruments.
A1.1 Divisions / Zones, Gas Groups and T rating
The BR385 sounder has been approved intrinsically safe by FM for
installation in the following Divisions / Zones and used with the following
hazards.
Installation in:
Division 1
Ignitable concentrations of flammable
gases, vapours or liquids can exist all of the
time or some of the time under normal
operating conditions.
Division 2
Ignitable concentrations of flammable
gases, vapours or liquids are not likely to
exist under normal operating conditions.
Zone 0
Explosive gas air mixture continuously
present.
Zone 1
Explosive gas air mixture likely to occur in
normal operation.
Zone 2
Explosive gas air mixture not likely to occur,
and if it does, it will only exist for a short
time.
Use with gases in groups:
Group A
Acetylene
Group B
Hydrogen
Group C
Ethylene
Group D
Propane
IIA
Propane
IIB
Ethylene
IIC
Hydrogen
Having a temperature classification of:
T1
450ºC
T2
300ºC
T3
200ºC
T4
135ºC
at an ambient temperature between -20ºC and +60ºC
A1.2 Intrinsic safety parameters
The BR385 sounder has been assessed using the entity concept and the
FM safety parameters are identical to the ATEX and IECEx safety
parameters except that output parameters Uo, Io and Po are specified for
the two tone changing terminals S2 and S3. Uo limits the maximum
cable capacitance to 390nF in gas group B and IIC (hydrogen) when the
terminals are connected to an isolated contact. This is unlikely to be
restrictive. Uo is unlikely to reduce the permitted cable capacitance when
the terminals are connected to a diode return barrier or galvanic isolator in
the safe area, but Io should be considered when determining the
maximum permitted cable inductance, but again is unlikely to be
restrictive.
APPENDIX 2
IECEx certification
A2.0 The IECEx Certification Scheme
IECEx is a global certification scheme for explosion protected products
which aims to harmonise international certification standards. For
additional information about the IECEx certification scheme and to view
the BEKA associate certificates, please visit www.iecex.com
A2.1 IECEx Certificate of Conformity
The BR385 sounder has been issued with an IECEx Certificate of
Conformity number IECEx SIR 17.0014X which specifying the following
certification code:
Ex ia IIC T4 Ga -40ºC
≤
Ta
≤
+60ºC.
The IECEx certificate may be downloaded from www.beka.co.uk,
www.iecex.com or requested from the BEKA sales office.
A2.2 Installation
The IECEx intrinsic safety parameters are identical to the ATEX safety
parameters described in the main section of this manual and both refer to
the same standards. Therefore the ATEX installation requirements
specified in this manual also apply for IECEx installations, but the local
code of practice should also be consulted.
A2.3 Special conditions for safe use
The IECEx certificate has an ‘X’ suffix indicating that special conditions
apply to prevent an electrostatic charge developing on the outside of the
instrument enclosure - see section 4.1.
WARNING
To avoid an electrostatic charge being generated BR385
enclosure should only be cleaned with a damp cloth.
BEKA
associates Ltd
Old Charlton Road
Hitchin
Herts
SG5 2DA
UK
Tel44 (0)1462 438301 Fax +44 (0)1462 453971 e-mail sales@beka.co.uk
www.beka.co.uk
Issue 9 September 2019
WARNING
To avoid a possible electrostatic charge
only clean BR385 sounder with a damp cloth.
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