IM 01C25H01-01E
2-8
2. HANDLING CAUTIONS
• Type of Protection and Marking Code: EEx d IIC
T6...T4
• Group: II
• Category: 2G, 1D
• Temperature Class: T6, T5, and T4
• Enclosure: IP66 and IP67
• Ambient Temperature for gas-proof:
–50 to 70
°
C (T6), –50 to 80
°
C (T5), and
–50 to 75
°
C (T4)
• Maximum Process Temperature (Tp.) for gas-proof:
85
°
C (T6), 100
°
C (T5), and 120
°
C (T4)
• Maximum Surface Temperature for dust-proof:
T80
°
C (Tamb.: –40 to 40
°
C, Tp.: 80
°
C)
T100
°
C (Tamb.: –40 to 60
°
C, Tp.: 100
°
C)
T120
°
C (Tamb.: –40 to 80
°
C, Tp.: 120
°
C)
Note 2. Electrical Data
• Supply voltage: 42 V dc max.
• Output signal: 4 to 20 mA
Note 3. Installation
• All wiring shall comply with local installation
requirements.
• The cable entry devices shall be of a certified
flameproof type, suitable for the conditions of use.
Note 4. Operation
• Keep the “WARNING” label attached to the
transmitter.
WARNING: AFTER DE-ENERGIZING,
DELAY 5 MINUTES BEFORE OPENING.
WHEN THE AMBIENT TEMP.
65
°
C,
USE HEAT-RESISTING CABLES
90
°
C.
• 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 part replacement by
other than an 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 EJX Series differential, gauge and
absolute pressure transmitters with optional
code /KU2 can be selected the type of protec-
tion 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”
• Applicable Standard: EN 60079-15:2003
• Referential Standard: IEC60079-0:1998,
IEC60079-11:1999.
• Type of Protection and Marking Code:
EEx nL IIC T4
• Temperature Class: T4
• Enclosure: IP66 and IP67
• Process Temperature: 120
°
C max.
• Ambient Temperature: –50 to 60
°
C
Note 1. Electrical Data
Ui = 30 V
Effective internal capacitance; Ci = 10 nF
Effective internal inductance; Li = 0 mH
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”.
[EEx nL]
Power Supply
(Zone 2 only)
Transmitter
Supply
Nonhazardous Location
[Installation Diagram]
Hazardous Location
+
–
+
–
F0205.EPS
Ratings of the Power Supply as follows;
Maximum Voltage: 30 V
CENELEC ATEX Type of Protection “Dust”
• Type of Protection and Marking Code: II 1D
• Maximum Surface Temperature:
T80
°
C (Tamb.: –40 to 40
°
C, Tp.: 80
°
C)
T100
°
C (Tamb.: –40 to 60
°
C, Tp.: 100
°
C)
T120
°
C (Tamb.: –40 to 80
°
C, Tp.: 120
°
C)
WARNING
To satisfy IP66 or IP67, apply waterproof glands
to the electrical connection port.
