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IM 1E7D0-01E
6-2
6. HAZARDOUS DUTY TYPE INSTRUMENT
• Nonincendive for Class I, Division 2, Groups A, B,
C & D ; Suitable for Class II, Division 2, Groups F
& G ; Class III, Division 1 and 2
Intrinsically safe (electrode) for Class I Division 1
Groups A, B, C & D
Electrode Circuit Vmax : 250V ac/dc
Excitation Circuit : 130Vp 72/75Hz
Temp. Code : T5
Enclosure : NEMA 4X
(2) Installation
WARNING
• All wiring shall comply with national electrical
code ANSI/NFPA 70 and local electrical code.
• In hazardous locations, wiring to be in conduit
as shown in Figure 6.2.1.
(3) Operation
WARNING
• Open circuit before opening the covers and
seal all conduits with in 18 inches in hazardous
locations.
• Take care not to generate mechanical spark
when access to the instrument and peripheral
devices in hazardous locations.
(4) Maintenance and Repair
WARNING
The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void the approval of Factory Mutual Re-
search Corporation.
Conduit
Magnetic Flow Converter
Sealing Fitting
HAZARDOUS LOCATIONS
18" (457 mm) Max.
F0601.EPS
Figure 6.2.1 Conduit Wiring
6.3 CSA
(1) Technical Data
• Explosionproof for Class I, Division 1, Groups C &
D ; Dust-ignitionproof Class II/III, Division 1
Groups E, F & G. Intrinsically safe (electrode) for
Class I Division 1 Groups A, B, C & D
Electrode Circuit Vmax: 250V ac/dc
Temp. Code
T6
T5
T4
T3
Process Temp
70
85
120
150
°
C
Enclosure: Type 4
• Nonincendive for Class I, Division 2, Groups A, B,
C & D ; Suitable for Class II, Division 2, Groups E,
F and G ; Class III, Division 1
Intrinsically safe (electrode) for Class I Division 1
Groups A, B, C & D
Electrode Circuit Vmax: 250V ac/dc
Excitation Circuit: 130Vp 72/75Hz, 11VAmax
Temp. Code
T5
T4
T3
Process Temp
85
120
150
°
C
Enclosure: Type 4
(2) Installation
WARNING
All wiring shall comply with Canadian Electrical
Code Part I and Local Electrical Codes.
In hazardous location, wiring shall be in conduit
as shown in Figure 6.3.1.
CAUTION : SEAL ALL CONDUITS WITHN
50cm OF THE ENCLOSURE’ UN
SCELLEMENT DOIT ÉTRE
INSTALLÉ À MOINS DE 50cm DU
BOÎTIER.
(3) Operation
WARNING
CAUTION : OPEN CIRCUIT BEFORE REMOV-
ING COVER.
OUVRIR LE CIRCUIT AVANT
D’ENLEVER LE COUVERCLE.
Take care not to generate mechanical spark
when access to the instrument and peripheral
devices in hazardous location.