WIKA T53 - Manual (Page 30)

GB
11178648.04 03/2010 GB/D/F/E
30 WIKA Operating Instructions Temperature Transmitter T53
6/6
Installation Drawing 11175631.01
Nonincendive Field Wiring Concept:
The Nonincendive Field Wiring concept allows for the interconnection of nonincendive
field wiring apparatus using any of the wiring methods permitted for unclassified locations.
V
max
>= V
oc
or V
t
, C
a
>= C
i
+C
cable
, L
a
>= L
i
+ L
cable
“
Installation Notes For FISCO and Entity Concepts:
1. The Intrinsic Safety Entity concept allows the interconnection of FM / CSA-approved
intrinsically safe devices (Div. 1 or Zone 0 or Zone1), with entity parameters not specifi-
cally examined in combination as a system when: U
o
or V
oc
or V
t
≤ V
max
, I
o
or I
sc
or I
t
≤
Imax, P
o
≤ P
i
C
a
or C
o
≥ ∑ C
i
+ ∑ C
cable
, L
a
or L
o
≥ ∑ L
i
+ ∑ L
cable
, P
o
≤ P
i
2. The Intrinsic Safety FISCO concept allows the interconnection of FM / CSA-approved
intrinsically safe devices with FISCO parameters not specifically examined in
combination as a system when:
U
o
or V
oc
or V
t
≤ V
max
, I
o
or I
sc
or I
t
≤ Imax, P
o
≤ P
i
3. Control equipment connected to the Associated Apparatus must not use or generate
more than 250 Vrms or Vdc.
4. Intrinsically Safe Installation should be in accordance with ANSI/ISA RP12.6.01
(except chapter 5 for FISCO Installations) "Installation of Intrinsically Safe Systems for
Hazardous (Classified) Locations" and the National Electrical Code ® (ANSI/NFPA 70)
Sections 504 and 505.
5. The configuration of associated Apparatus must be FM Approvals or CSA Approved
under the associated concept.
6. Associated Apparatus manufacturer’s installation drawing must be followed when
installing this equipment.
7. The equipment is approved for Class I, Zone 0, applications. If connecting AEx [ib]
associated Apparatus or AEx ib I.S. Apparatus to the equipment the I.S. circuit is only
suitable for Class I, Zone 1, or Class I, Zone 2, and is not suitable for Class I, Zone 0 or
Class I, Division 1, Hazardous (Classified) Locations".
8. No revision to drawing without prior FM / CSA Approval.
9. Simple Apparatus is defined as a device that neither generates nor stores more than
1.5 V, 0.1 A or 25 mW.
10. The termination must be NRTL-approved, and the resistor must be infallible.
11. Warning:
For applications in Div. 2 or Zone 2 (Classified Locations) Explosion hazard: Except for
nonincendive field circuits, do not disconnect the apparatus unless the area is known
to be non hazardous.
12. Warning:
Substitution of Components May Impair Safety.
Appendix 1: FM-CSA Installation Drawing