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Model: DY Series Date: April 18, 2014
Rev. Doc. No.: IFM021-A20 P.4
Yokogawa Electric Corporation
Division 2 Installation (Integral Type)
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Model: DY Series Date: April 18, 2014
Rev. Doc. No.: IFM021-A20 P.5
Yokogawa Electric Corporation
Division 2 Installation (Remote Type)
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Model: DY Series Date: April 18, 2014
Rev. Doc. No.: IFM021-A20 P.6
Yokogawa Electric Corporation
Notes:
1. This drawing replaces the former control drawing IFM021-A12.
2. No revision to this drawing without prior approval of FM.
3. Installation must be in accordance with the National Electric Code (NFPA70),
ANSI/ISA RP12.06.01 and relevant local codes.
4. In case Nonincendive Field Wiring Concept is used for the interconnection, FM
approved Associated Nonincendive Field Wiring Apparatus, which meets the
following conditions, must be used as the power supply / control equipment.
Voc (or Uo) ≤ Vmax (or Ui)
Ca (or Co) ≤ Ci + Ccable
La (or Lo) ≤ Li + Lcable
5. F NICO installation must be in accordance with ANSI/ISA-60079-27.
ANSI/ISA-60079-25 allows the use of FNICO field device in “ic FISCO” system.
6. The control drawing of the associated apparatus must be followed when installing
the flow meter or flow converter.
7. The terminator(s) must be FM approved.
8. Dust-tight conduit seals must be used when installed in Class II or Class III
environments.
9. WARNING – EXPLOSION HAZARD. FOR INSTALLATION OTHER THAN
NONINCENDIVE FIELD WIRING, DO NOT DISCONNECT EQUIPMENT WHEN A
FLAMMABLE OR COMBUSTIBLE ATMOSPHERE IS PRESENT
10. WARNING – SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR
DIVISION 2
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