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FM Installation drawing 6333QF01-V1R0
Hazardous (Classified ) Location
Class I, Division 1, Group A,B,C,D T4..T6
Class I, Zone 0, AEx ia IIC T4..T6
Installation notes
For installation in Class I the Transmitter must be installed in a suitable enclosure to
meet installation codes stipulated in The National Electrical Code (ANSI-NFPA 70).
Equipment that is FM-approved for intrinsic safety may be connected to barriers based
on the Entity Concept. This concept permits interconnection of approved transmitters,
meters and other devices in combinations, which have not been specifically examined
by FM, provided that the agency's criteria are met. The combination is then intrinsically
safe, if the entity concept is acceptable to the authority having jurisdiction over the
installation.
The entity concept criteria are as follows: The intrinsically safe devices, other than
barriers, must not be a source of power. The maximum voltage Ui(VMAX) and current
Ii(IMAX), and maximum power Pi(Pmax), which the device can receive and remain
intrinsically safe, must be equal to or greater than the voltage (Uo or VOC or Vt) and
current (Io or ISC or It) and the power Po which can be delivered by the barrier. The
sum of the maximum unprotected capacitance (Ci) for each intrinsically device and the
interconnecting wiring must be less than the capacitance (Ca) which can be safely
connected to the barrier. The sum of the maximum unprotected inductance (Li) for each
intrinsically device and the interconnecting wiring must be less than the inductance (La)
which can be safely connected to the barrier. The entity parameters Uo, VOC or Vt and
Io, ISC or It, and Ca and La for barriers are provided by the barrier manufacturer.
T6: -40 ≤ Ta ≤ 60ºC
T4: -40 ≤ Ta ≤ 85ºC
43
13
12
42
11
41
CH1
23
53
22
52
21
51
CH2
6333B1A : one channel
6333B1B : two channel
6333V108-FR
Non Hazardous Location
+
-
Barrier
+
-
Barrier
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