Oldham BM25, Руководство по эксплуатации

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Information in following paragraphs must be taken into account and followed by the person
responsible for the equipment installation site. Refer to the provisions of European ATEX Directive
1999/92/EC, the Canadian Electrical Code, or to the applicable local legislation, relevant to
improving safety protection and health of workers exposed to the risks of explosive atmospheres.
For intrinsically safe installations and especially for connections to the BM25, keep in mind
that the person responsible for the IS installation, called “the system designer,” must establish a
system document demonstrating that the whole BM25 system - Cable -- Body device is Intrinsically
Safe (See standard EN 50039 FOR GROUP II and EN 50394-1 for group I for the preparation of
this document).
ATEX Essential Safety and Health requirements
comply with the following standards:
EN 50014 of June 1997 + Amendments 1 and 2
EN 50018 of November 2000 +amendment 1
EN 50020 of June 2002
EN 50284 of January 1999
EN 50303 of July 2000
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. Hazardous areas and general rules
The BM25 can be used in explosive atmospheres in Group II surface industries and Group I mines
containing firedamp.
The ambient temperature range for its use is from –20° C to + 55° C.
Depending on the type of sensors used on the instrument, categories covered by the gas detector
following the European Directive 94/9/CE are:
a) Device with any type of sensor block except infrared block
- Surface industries: Category 1G, use in zones 0,1 or 2
- Mines containing firedamp : category M1, whatever the gas value
b) Device with any type of sensor block including infrared block
- Surface industries: Category 2G, use in zones 1 or 2
- Mines containing firedamp : category M2, use below a gas limit value
The following operations are prohibited in explosive atmospheres:
- opening of the instrument: sensor cover or rear cover
- recharging of batteries
- link-up with a computer
All servicing, adjustment and maintenance operations must be performed by duly approved
personnel.
In order to avoid any risk of explosion by electrostatic discharges, the display unit glass and
indicator light must be cleaned only with a damp cloth. The battery pack must be replaced by the
original part specified by the manufacturer – INDUSTRIAL SCIENTIFIC- p/n 6 311 082.
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. ATEX areas: input/output parameters