Yokogawa EJA115 - Manual (Page 13)

IM 01C22T03-00E 2-6
2. HANDLING CAUTION
Number of Devices
The number of devices (max. 32) possible on a
fieldbus link depends on factors such as the power
consumption of each device, the type of cable used,
use of repeaters, etc.
b. CENELEC ATEX (KEMA) Flameproof Type
Caution for CENELEC (KEMA) Flameproof Type
Note 1. EJA Series differential, gauge, and absolute
pressure transmitters with optional code /KF25
for potentially explosive atmospheres:
• No. KEMA 02ATEX2148
• Applicable standard: EN50014:1997,
EN50018:2000
• Type of Protection and Marking Code:
EEx d IIC T6...T4
Temperature Class: T6
T5 T4
Maximum Process Temperature:
85°C 100°C 120°C
• Ambient Temperature:
–40 to 80°C(T5)
–40 to 75°C(T4 and T6)
• Enclosure: IP67
Note 2. Electrical Data
• Supply voltage: 32 V dc max.
Output current: 15 mA dc
Note 3. Installation
• All wiring shall comply with local installa-
tion requirements.
• 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.
м70°C, USE HEAT-RESISTING
CABLES
м90°C.
• Take care not to generate mechanical
sparking when accessing 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 Corpo-
ration is prohibited and will void KEMA
Flameproof Certification.
c. CENELEC ATEX Type of Protection “n”
Model EJA Series differential, gauge, and absolute
pressure transmitters with optional code /KN25.
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, EN60529
• Referential standard: IEC60079-0, IEC60079-11
• Type of Protection and Marking Code:
Ex nL IIC T4
• Group: II
• Category: 3G
• Ambient Temperature: –40 to 60°C
• Ambient humidity: 0 to 100%RH (No condensation)
• Enclosure: IP67
Note 1. Electrical Data
Ui = 32 Vdc
Ci = 3.52 nF
Li = 0 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)
EJA
Supply
Nonhazardous Location
[Installation Diagram]
Hazardous Location
+
–
+
–
F0208.EPS
Ratings of the Power Supply as follows:
Maximum Voltage: 32 Vdc