Yokogawa AXFA14G/C - Manual (Page 114)

IM 01E20C02-01E 12-3
12. EXPLOSION PROTECTED TYPE INSTRUMENT
(3) Operation
WARNING
• “OPEN CIRCUIT BEFORE REMOVING COV-
ERS.”
• “SEAL ALL CONDUITS WITHIN 18 INCHES”
in hazardous locations.
• When installed in Division 2, “SEALS NOT
REQUIRED”
• 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 Flowmeter
Sealing Fitting
HAZARDOUS LOCATIONS
18" (457 mm) Max.
F1202.EPS
Figure 12.2.1 Conduit Wiring
12.3 CSA
(1) Technical Data
Applicable Standard:
For CSA C22.2 Series;
C22.2 No 0, C22.2 No 0.4, C22.2 No 0.5,
C22.2 No 25, C22.2 No 30, C22.2 No 94,
C22.2 No 1010.1
For CSA E79 Series;
CAN/CSA-E79-0, CAN/CSA-E79-1,
Certificate: 1481213
For CSA C22.2 Series
Explosion proof for Class I, Division 1, Groups A,
B, C & D.
Dust-ignition proof for Class II/III, Division 1,
Groups E, F & G.
“SEAL ALL CONDUITS WITHIN 50 cm OF THE
ENCLOSURE”
“WHEN INSTALLED IN DIV. 2, SEALS NOT
REQUIRED”
Maximum power supply voltage: 250 Vac/130 Vdc
Excitation Circuit: 140V max
Enclosure: Type 4X
Temperature Code: T6
Ambient Temp.: –40
°C to +60°C (–40°F to +140°F)
For CSA E79 Series
Flameproof for Zone 1, Ex d IIC T6
Maximum power supply voltage: 250 Vac/130 Vdc
Excitation Circuit: 140V max
Enclosure: IP66, IP67
Temperature Code: T6
Ambient Temp.: –40
°C to +60°C (–40°F to +140°F)
(2) Installation
For CSA C22.2 Series
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.
WARNING : SEAL ALL CONDUITS WITHIN
50cm OF THE ENCLOSURE’.
UN SCELLEMENT DOIT ÉTRE
INSTALLÉ À MOINS DE 50cm DU
BOÎTIER.
• When installed in Division 2, “SEALS NOT
REQUIRED”
For CSA E79 Series
WARNING
• All wiring shall comply with local installation
requirements and local electrical code.
• In hazadous locations, the cable entry devices
shall be of a certified flameproof type, suitable
for the conditions of use and correctly installed.
• Unused apertures shall be closed with suitable
flameproof certified blanking elements. (The
plug attached is flameproof certified.)