Masoneilan SVI II AP Installation and Maintenance ... - GE Energy

Modem and Computer Use in
HART Communications with
Modem and Computer Use in Intrinsically Safe Circuits
Many HART modems that are in use today are not approved for connections to
Intrinsically Safe control circuits. Most portable computers are NOT approved for use in
hazardous areas. Modems can be safely connected to the safe area side of barriers,
and isolators. Observe requirements for the HART filter.
MACTek Intrinsically Safe modem, Model 010005
MACTek Warning
The VIATOR RS232 HART Interface [Eex ia] IIC complies with the Essential Health and
Safety Requirements relating to the design and construction of equipment and
protective systems intended for use in potentially explosive atmospheres.
Requirements given in Annex II of the Directive 94/9/EC (ATEX Directive) of the
European Parliament and the Council of 23 March 1994. Consult MACTek Corporation,
http://www.mactekcorp.com/company.html for detailed requirements for safe use.
"This product has not been tested by any certification agency such as Factory Mutual
with jurisdiction outside the European Union for intrinsic safety. The product can be
used outside the European Union (e.g. in the USA) on the sole authority of the buyer.
MACTek makes no claims of suitability and offers no warranties regarding the use of
this product for connection of PCs to circuits extending into hazardous areas in
countries outside the European Union."
Do not connect a PC or HART modem to an intrinsically safe circuit except on the safe
area side of a barrier. Do not operate a PC in a hazardous area without compliance
with local and plant regulations.
Use of Handheld Communicators In Intrinsically Safe Circuits
WARNING
Ensure that any handheld communicator in use is approved
for use in hazardous areas that use explosion proof safety
practices. Do not use unapproved handheld communicators
unless the area has been declared safe (Hot Work Permit).
If a HART communicator is approved to communicate with
intrinsically safe control circuits in hazardous areas. Read
the product manual before use and observe all warnings.
The intrinsic safety entity parameters must be added to the
SVI II AP entity parameters to determine suitability for use in
any intrinsically safe circuit. Observe the labels on the
handheld communicator or consult the manufacturer.
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