Yokogawa ADMAG AXF - Manual (Page 125)

IM 01E20D01-01E 8-9
8. EXPLOSION PROTECTED TYPE INSTRUMENT
Uo=250V*, Io=3.37mA*, Po=0.211W
*Uo and Io are rms value.
• Ignition and Explosion Class of gas or vapour: IIC T4
• Ambient Temperature: –20 to 60
°C (power supply code 1)
: –20 to 50
°C (power supply code 2)
• Fluid Temperature: 120 °C max
• Electrode Circuit: 250 V AC/DC
• Maximum power supply voltage: 250V AC/130V DC
• Grounding: JIS Class C(grouding resistance 10
Ω or
less) or JIS Class A(grounding resistance 10 Ω
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.
(Remote Flowtube)
• Construction: Ex de[ia] IIC T4
: Terminal box ; Explosion proof
Flowtube; Increased Safety and
Intrinsically Safety(ia)
Electrode; Intrinsically Safety(ia)
Um=250VAC 50/60Hz, 250VDC,
Uo=250V*, Io=3.37mA*, Po=0.211W
*Uo and Io are rms value.
• Ignition and Explosion class of gas or vapour: IIC T4
• Ambient Temperature: –20 to 60
°C
• Fluid Temperature: 120 °C max
• Electrode Circuit: 250 V AC/DC
• Grounding: JIS Class C(grouding resistance 10
Ω or
less) or JIS Class A(grounding resistance 10
Ω
or less)
WARNING
* In case of TIIS Flameproof type, a remote
flowtube is available for combined use with the
AXFA14 only.
WARNING
In case that ambient temperature exceeds 50
°C,
use heat-resistant cables with maximum
allowable temperature of 70
°C or above.
(2) Wiring Installation
For the external wiring of flameproof types, use a
flameproof packing adapter approved by Yokogawa
(refer to Figure 8.4.2) or cable wiring using a flame-
proof metal conduit (refer to Figure 8.4.4 and “IN-
STALLATION AND OPERATING PRECAUTIONS
FOR TIIS FLAMEPROOF EQUIPMENT” at the end
of this manual).
NOTE
This section describes the remote flowmeter as
an example. The same attention must be paid to
the integral flowmeter.
(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 G12 or G11).
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)
F G
F0809.EPS
Figure 8.4.1 Flameproof Packing Adapter
• Apply a nonhardening sealant to the terminal box
connection port and to the threads on the flameproof
packing adapter for waterproofing.
• The same wiring as described below is required for
both of the terminal box connection ports except
when a four-wire cable is used for power input and
signal output with DC power supply in the Integral
flowmeter.