10
HAZARDOUS AREA USE
Intrinsically Safe Certification
The MFC 4102 and MFC 4103 HART Communicators are available with Intrinsically Safe Certification for
use in Class I, Division I, Groups A, B, C, and D, T5 hazardous areas. Refer to the Intrinsically Safe Control
Document in the Appendix of this instruction manual for more details. The certification is to CAN /CSA-
22.2 No.1010.1 & 157-92 and UL913 Fifth Edition Rev 2/21/97.
The following table identifies MFC model numbers and Areas of acceptable use.
Model Number Non-hazardous
Area
Hazardous
Area
MFC 4100
√
NO
MFC 4101
√
NO
MFC 4102
√
√
MFC 4103
√
√
MFCs with Intrinsically Safe certification can be identified by model number (see table above or the
Intrinsically Safe Control Document in the Appendix) or by a special label on the unit. A sample of the label
is shown below.
WARNING: Serious injury or death may result from explosions. Do not make connection to the DB – 9
connection port or to the AC adapter jack while in a hazardous area.
WARNING: Serious injury or death may result from explosions. Before making electrical connections to
an Intrinsically Safe MFC at the HART jacks, verify the instruments in the loop are installed in
accordance with intrinsically safe field wiring practices.
Note: Restrictions apply to the use of Intrinsically Safe MFC units in hazardous areas. Refer to the
Intrinsically Safe Control Document in the Appendix for exact details. Meriam Process Technologies
reserves the right to revise the Control Document without notice. Contact Meriam Process Technologies
(phone (216) 281-1100) for the current Intrinsically Safe Control Document.
For Intrinsically Safe MFC models, consult the
Hazardous Area Use
section of this manual for
restrictions, for special instructions in use, and for electrical connections.
