Yokogawa EJA115 - Manual (Page 4)

( III ) For code /KU21
c. ATEX Intrinsically Safe Type/ATEX Flame-
proof Type/ATEX Type n
Model EJA Series pressure transmitters with
optional code /KU21 can be selected the type of
protection ATEX Intrinsically Safe, Flameproof or
ATEX Type n for use in hazardous locations.
Note 1. For the installation of this transmitter,
once a particular type of protection is selected,
any other type of protection cannot be used. The
installation must be in accordance with the
description about the type of protection in this
user’s manual.
Note 2. In order to avoid confusion, unnecessary
marking is crossed out on the label other than
the selected type of protection when the trans-
mitter is installed.
᭹
ATEX Type of Protection “n”
WARNING
When using a power supply not having a non-
incendive circuit, please pay attention not to ignite
in the surrounding flammable atmosphere. In
such a case, we recommend using wiring metal
conduit in order to prevent the ignition.
• Applicable Standard: EN60079-15
• Referential Standard: IEC60079-0, IEC60079-11
• Type of Protection and Marking Code:
Ex nL IIC T4
• Temperature Class: T4
• Enclosure: IP67
• Process Temperature: 120
°
C max.
• Ambient Temperature: –40* to 60
°
C
*–15
°
C when /HE is specified.
Note 1. Electrical Data
Ui = 30 V
Effective internal capacitance; Ci = 22.5 nF
Effective internal inductance; Li = 730
µ
H
Note 2. Installation
• All wiring shall comply with local installation
requirements. (refer to the installation diagram)
Note 3. Maintenance and Repair
• The instrument modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void Type
of Protection “n”.
Power Supply
(Zone 2 only)
Transmitter
Supply
Nonhazardous Location
[Installation Diagram]
Hazardous Location
+
–
+
–
F0209.EPS
Ratings of the Power Supply as follows;
Maximum Voltage: 30 V
᭹
ATEX Type of Protection “Dust”
[When combined with II 2G]
Follow the installation instructions described in 'b.
ATEX Flameproof Type.'
• Applicable Standard: EN61241-0:2006, EN61241-
1:2004
• Type of Protection and Marking Code: II 2D Ex
tD A21 IP6X
• Maximum Surface Temperature:
T85
°
C (Tamb.: –40* to 75
°
C, Tp:85
°
C), T100
°
C
(Tamb.: –40* to 80
°
C, Tp:100
°
C), and T120
°
C
(Tamb.: –40* to 75
°
C, Tp:120
°
C)
*–15
°
C when /HE is specified.
Note 1. Installation instructions
The cable entry devices and blanking ele-
ments shall be of a certificated type providing
a level of ingress protection of at least IP6X,
suitable for the conditions of use and correctly
installed.
[When combined with II 1G]
Follow the installation instructions described in 'a.
ATEX Intrinsically Safe Type.'
• Applicable Standard: EN50281-1-1:1997
• Type of Protection and Marking Code: II 1D
• Maximum Surface Temperature:
T65
°
C (Tamb.: 40
°
C), T85
°
C (Tamb.: 60
°
C), and
T105
°
C (Tamb.: 80
°
C)
Note 1. Installation instructions
The cable entry devices and blanking ele-
ments shall be of a certificated type providing
a level of ingress protection of at least IP6X,
suitable for the conditions of use and correctly
installed.
WARNING
• OPEN CIRCUIT BEFORE REMOVING
COVER. INSTALL IN ACCORDANCE WITH
THIS USER’S MANUAL
• Take care not to generate mechanical spark-
ing when access to the instrument and periph-
eral devices in hazardous locations.