Instruction Manual

IM 01C21F01-01E
2-9
2. HANDLING CAUTIONS
• Take care not to generate mechanical sparking
when accessing to the instrument and peripheral
devices in a hazardous location.
Note 5. Maintenance and Repair
• The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void KEMA Flameproof Certification.
c. CENELEC ATEX (KEMA) Intrinsically Safe
Type/CENELEC ATEX (KEMA) Flameproof
Type/ CENELEC ATEX Type n
Model EJA-A Series pressure transmitters with
optional code /KU2 can be selected the type of
protection CENELEC ATEX (KEMA) Intrinsically
Safe, Flameproof or CENELEC 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
transmitter is installed.
䊉 CENELEC 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 nC IIL T4
• Temperature Class: T4
• Enclosure: IP67
• Process Temperature: 120°C max.
• Ambient Temperature: –40 to 60°C
Note 1. Electrical Data
Ui = 30 V
Effective internal capacitance; Ci = 22.5 nF
Effective internal inductance; Li = 730 µH
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
䊉 CENELEC ATEX Type of Protection “Dust”
• 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 elements
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.
(2) Electrical Connection
The type of electrical connection is stamped near
the electrical connection port according to the
following marking.
F0200.EPS
Location of the marking
(3) Installation
WARNING
• All wiring shall comply with local installation
requirement and local electrical code.
• There is no need of the conduit seal for both of
Division 1 and Division 2 hazardous locations
because this product is sealed at factory.
• In case of ANSI 1/2 NPT plug, ANSI hexagonal
wrench should be applied to screw in.