User Manual

IM 01E20C02-01E
12-5
12. EXPLOSION PROTECTED TYPE INSTRUMENT
(3) Operation
WARNING
• After de-energizing, delay 20 minutes before
opening.
• 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 certification.
12.5 TIIS
CAUTION
The model AXFA14C magnetic flowmeter remote
converter with optional code JF3, which has
obtained certification according to technical
criteria for explosion-protected construction of
electric machinery and equipment (Standards
Notification No. 556 from the Japanese Ministry
of Labor) conforming to IEC standards, is
designed for hazardous areas where
inflammable gases or vapors may be present.
(This allows installation in Division 1 and 2
areas)
To preserve the safety of flameproof equipment
requires great care during mounting, wiring, and
piping. Safety requirements also place
restrictions on maintenance and repair activities.
Users absolutely must read “INSTALLATION
AND OPERATING PRECAUTIONS FOR TIIS
FLAMEPROOF EQUIPMENT” at the end of this
manual.
(1) Technical Data
• Certificate: TC16678
• Construction: Ex d IIC T6
: Explosion proof
• Ignition and Explosion Class of gas or vapour: IIC T6
• Ambient Temperature: –20 to 60°C (power supply code 1)
: –20 to 50°C (power supply code 2)
• Maximum power supply voltage: 250V AC/130V DC
• Grounding: JIS Class C(grouding resistance 10 or
less) or JIS Class A(grounding resistance 10
or less)
WARNING
In case that ambient temperature exceeds 50°C,
use heat-resistant cables with maximum allow-
able temperature of 70°C or above.
WARNING
* In case of TIIS Flameproof type, a remote
flowtube is available for combined use with the
AXFA14 only.
(2) Wiring Installation
For the external wiring of flameproof types, use a
flameproof packing adapter approved by Yokogawa
(refer to Figure 12.4.2) or cable wiring using a flame-
proof metal conduit (refer to Figure 12.4.4 and “IN-
STALLATION AND OPERATING PRECAUTIONS
FOR TIIS FLAMEPROOF EQUIPMENT” at the end
of this manual).
(2-1) Wiring Cable through Flameproof Pack-
ing Adapter
WARNING
For the TIIS flameproof type with wiring using a
flameproof packing adapter, wire cables through
the packing adapters approved by Yokogawa
(optional code G14 or G13).
T1
T2
L
18(0.71)
G
F
D
C
16.5(0.65)
*Packing
(Choose from the table below
depend on cable outside diameter)
Unit : mm
(Approx. inch)
Adapter body(M. Screw)
Packing case
Hexagon socket set screw
O-Ring
Packing *
O-Ring
O-Ring
Washer
Union nut
Packing gland
Clamp ring
Clamp nut
O-Ring
B.coupling
Cable(user's scope)
Hexagon socket set screw
0.26
(0.57)
8.0 to 10.0 (0.31 to 0.39)
10.0 to 12.0 (0.39 to 0.47)
16 8-10
16 10-12
Identification
mark
Weight
kg
(lb)
Packing diameter
Cable outer diameter
T1 T2 C D
L
Dimension
G 1/2 G 1/2
35
(1.38)
39
(1.54)
94.5
(3.72)
10.0(0.39)
12.0(0.47)
20.0
(0.79)
FG
F0809.EPS
Figure 12.4.1 Flameproof Packing Adapter