Yokogawa EJA115 - Manual (Page 2)

( I ) for code /KF21, /KU21 and /KU22
b. ATEX Flameproof Type
Caution for ATEX flameproof type.
Note 1. Model EJA Series differential, gauge, and
absolute pressure transmitters with
optional code /KF21 for potentially
explosive atmospheres:
• No. KEMA 02ATEX2148
• Applicable Standard: EN60079-0:2006, EN60079-
1:2004
• Type of Protection and Marking Code: Ex d IIC
T6···T4
• Temperature Class: T6, T5, and T4
• Enclosure: IP67
• Maximum Process Temperature:
85
°
C (T6), 100
°
C (T5), and 120
°
C (T4)
• Ambient Temperature: T4 and T6; –40* to 75
°
C,
T5; –40* to 80
°
C
*–15
°
C when /HE is specified.
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
requirement.
• The cable entry devices shall be of a certified
flameproof type, suitable for the conditions of use.
Note 4. Operation
• Keep the “CAUTION” label to the transmitter.
CAUTION: AFTER DE-ENERGIZING,
DELAY 10 MINUTES BEFORE
OPENING. WHEN THE AMBIENT
TEMP.
м 70
°
C, USE HEAT-RESISTING
CABLES м 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 parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void KEMA Flameproof Certification.
( II ) for code /KU22
c. ATEX Intrinsically Safe Type/ATEX Flame-
proof Type/ATEX Type n
Model EJA Series pressure transmitters with
optional code /KU22 can be selected the type
of protection ATEXIntrinsically 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
transmitter 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: EN 60079-0:2009, EN60079-
15:2005
• Type of Protection and Marking Code:
Ex nL IIC T4 Gc
• Temperature Class: T4
• Enclosure: IP67
• Process Temperature: 120
°
C max.
• Ambient Temperature: –30* 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”.