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Anschlussdiagramm für Zulassung Eigensicher/Nicht-zündfähig gemäß FM (US)
(4 - 20 mA- und Fieldbus-Ausführung)
Model: YTA series
Specific Conditions of Use:
–
Precautions shall be taken to minimize the risk from electrostatic
–
When the enclosure of the Temperat ure Transmitter is made of aluminum alloy, if it is mounted in
Zone 0, it must be installed such that, even in the event of rare incid ents, an ignition source due to
impact and/or friction sparks is excluded.
–
The dielectric strength of 500 V r.m. s. between the intrinsically safe
Temperature Transmitter is
Notes:
1.
No revision to this drawing
2.
Installation must be in accord ance with the National Electric Co de (NFPA70), ANSI/ISA-RP12.06.01,
and relevant local codes.
3.
The Associated Apparatus must be FM-approved.
4.
The following conditions must
Voc (or Uo) ≤ Ui
Isc (or Io) ≤ Ii
Po ≤ Pi
Ca (or Co) ≥ Ci + Ccable
La (or Lo) ≥ Li + Lcable
5.
Control equipment connected to th e Associated Apparatus must not use or generate a voltage more
than Um of the Associated Apparatus.
6.
The control drawing of the Asso ciated Apparatus must be follow ed when installing the equipment.
7.
In case Nonincendive Field W iring Concept is used for the interc onnection, FM-app roved Associated
Nonincendive Field Wiring Apparatus, which meets
Power Supply / Cont rol Equipment.
Voc (or Uo) ≤ Ui
Ca (or Co) ≥ Ci + Ccable
La (or Lo) ≥ Li + Lcable
8.
The surge absorber F9220AR can be remo ved from, or added to the equipment.
9.
Dust-tight conduit seals must be used when
10. FISCO/FNICO installation must be
11. The terminator(s) must be FM approved.
12. WARNING –ELECTROSTATIC CHARGE MAY CA
ACTIONS THAT CAUSE THE GENERATION OF ELECTROSTATIC CHARGE, SUCH AS
RUBBING WITH A DRY CLOTH ON COATING FACE OF THE PRODUCT.
13. WARNING – SUBSTITUTION OF COMPONENT
SUITABILITY FOR HAZ ARDOUS LOCATIONS
R
e
. v
limited, only by the removable surge absorber F9220AR.
without prior approval of FM.
be satisfied for each circuit.
the following conditions , must be used as the
installed in Class II or Class III environments.
in accordance with ANSI/ISA-60079-25.
USE AN EXPLOSION HAZARD. AVOID ANY
S MAY IMPAIR INTRINSIC SAFETY AND
Yokogawa Electric Corporation
<2. Hinweise zur Handhabung>
Date: September 24, 2015
discharge of painted parts.
circuit and the enclosure of the
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0
2
9
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6
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2-19
P
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IM 01C50G01-01D-E
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