YOKOGAWA Dpharp vigilantplant EJA Series Manual Download Page 14

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<2. Handling Cautions>

IM 01C22A01-01E

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.

● CENELEC ATEX Type of Protection “n”

WARNING

When using a power supply not having a nonincendive
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: EN60079-15:2003
• Referential Standard: IEC60079-0:1998,

IEC60079-11:1999

•  Type of Protection and Marking Code: EEx nL IIC 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

Non-hazardous Location

[Installation Diagram]

Hazardous Location

–

F0210.ai

Ratings of the Power Supply as follows; Maximum Voltage: 30 V

● 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.

F0211.ai

Location of the marking

Screw Size

Marking

ISO M20 × 1.5 female

M
A

ANSI 1/2 NPT female

(3) Installation

WARNING

• All wiring shall comply with local installation