Yokogawa EJX930A - Manual (Page 2)

( I )
ATEX Certification
(1) Technical Data
a. ATEX Intrinsically Safe Type
Caution for ATEX Intrinsically safe type.
Note 1. EJX series pressure transmitters with
optional code /KS25 for potentially
explosive atmospheres:
• No. KEMA 04ATEX1116 X
• Applicable Standard: EN 50014, EN 50020,
EN 50284, EN50281-1-1
Note 2. Ratings
[EEx ia IIC T4]
Type of Protection and Marking Code:
EEx ia IIC T4
Group: II
Category: 1GD
Ambient Temperature: –40* to 60°C
* –15°C when /HE is specified.
Maximum Process Temperature (Tp.): 120°C
Maximum Surface Temperature for dust proof.
T85°C (Tamb.: –40* to 60°C, Tp.: 80°C)
T100°C (Tamb.: –40* to 60°C, Tp.: 100°C)
T120°C (Tamb.: –40* to 60°C, Tp.: 120°C)
* –15°C when /HE is specified.
Degree of Protection of the Enclosure:
IP66 and IP67
Electrical Data
• When combined with Trapezoidal and
Rectangular output characteristic FISCO
model IIC barrier
Ui = 17.5 V, Ii = 380 mA, Pi = 5.32 W,
Ci = 1.76 nF, Li = 0 µH
• When combined with Linear characteristic
barrier
Ui = 24.0 V, Ii = 250 mA, Pi = 1.2 W,
Ci = 1.76 nF, Li = 0 µH
[EEx ia IIB T4]
Type of Protection and Marking Code:
EEx ia IIB T4
Group: II
Category: 1GD
Ambient Temperature: –40* to 60°C
* –15°C when /HE is specified.
Maximum Process Temperature (Tp.): 120°C
Maximum Surface Temperature for dust proof.
T85°C (Tamb.: –40* to 60°C, Tp.: 80°C)
T100°C (Tamb.: –40* to 60°C, Tp.: 100°C)
T120°C (Tamb.: –40* to 60°C, Tp.: 120°C)
* –15°C when /HE is specified.
Degree of Protection of the Enclosure:
IP66 and IP67 Electrical Data
• When combined with Trapezoidal or
Rectangular output characteristic FISCO
model IIB barrier
Ui = 17.5 V, Ii = 460 mA, Pi = 5.32 W,
Ci = 1.76 nF, Li = 0 µH
Note 3. Installation
• All wiring shall comply with local installation
requirements. (Refer to the installation
diagram)
Note 4. Maintenance and Repair
• The instrument modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void KEMA
Intrinsically safe Certification.
Note 5. Special Conditions for Safe Use
• In the case where the enclosure of the
Pressure Transmitter is made of aluminium,
if it is mounted in an area where the use of
category 1 G apparatus is required, it must
be installed such, that even in the event of
rare incidents, ignition sources due to impact
and friction sparks are excluded.
Note 6. Installation instructions
• From the safety point of view the circuit shall
be considered to be connected to earth.
As this deviates from the FISCO system
in acordance with IEC TS 60079-27 care
has to be taken that the (local) installation
requirements are taken into account as well.
When used in a potentially explosive
atmosphere, requiring the use of apparatus
of equipment category 1D or 2D, certified
cable entry devices shall be used that are
suitable for the application and correctly
installed.
 FISCO Model
Non-Hazardous
Locations
Hazardous Locations
F0207r.ai
Terminator
(FISCO Model)
Ex i
Field Instruments
(Passive)
Hand-
held-
Terminal
Supply Unit and
Safety Barrier
(FISCO Model)
Terminator
Data
U
U
I
I.S. fieldbus system complying with FISCO