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IM 1E7B0-02E
12-3
12. EXPLOSION PROTECTED TYPE INSTRUMENT
12.3 CSA
(1) Technical Data
• Explosionproof for Class I, Groups B, C & D ; Class
II, Groups E, F & G ; Class III
Electrode: Intrinsically safe for Class I, Division 1,
Groups A, B, C & D
Electrode Circuit Vmax: 250V ac/dc
Temp. Code
T6
T5
T4
Process Temp
70
85
120
°
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
Electrode: Intrinsically safe 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
Process Temp
85
120
°
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 12.3.1.
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.
(4) Maintenance and Repair
WARNING
The instrument modification or parts replacement
by other than authorized representative of
YOKOGAWA Electric Corporation or
YOKOGAWA Corporation of AMERICA is
prohibited and will void Canadian Standards
Explosionproof Certification.
Conduit
Magnetic Flow Converter
Sealing Fitting
HAZARDOUS LOCATIONS
50 cm Max.
F0602.EPS
Figure 12.3.1 Conduit Wiring
12.4 SAA
WARNING
Only trained persons use this instrument in
industrial locations .
(1) Technical Data
SA Certificate No.
AUS Ex 3210X
Type of Protection
Ex dm(ia)II C T6 IP67
Electrode Circuit Um
250V ac/dc
Excitation Circuit
130Vp 72/75Hz
Temperature Class
T6
T5
T4
Process Temperature
70
85
120
°
C
(2) Installation
WARNING
• All wiring shall comply with local installation
requirements and local electrical code.
• In hazardous locations, the cable entry devices
shall be of a certified flameproof type, suitable
for the contidions of use and correctrly
installed.
• Unused apertures shall be closed with suitable
flameproof certified blanking elements. (The
plug attached is flameproof certified.)