<2. Handling Cautions>
2-9
IM 01C25F01-01E
c CSA Intrinsically Safe Type/CSA
Explosionproof Type
EJX/EJA-E Series pressure transmitters with
optional code /CU1 or /V1U1 can be selected
the type of protection (CSA Intrinsically Safe
or CSA Explosionproof) 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 instruction manual.
Note 2. For combined approval types, once a
device of multiple approval type is installed,
it should not be re-installed using any
other approval types. Apply a permanent
mark in the check box of the selected
approval type on the certification label on
the transmitter to distinguish it from unused
approval types.
2.9.3 ATEX Certification
(1) Technical Data
a. ATEX Intrinsically Safe Ex ia
Caution for ATEX Intrinsically safe type.
Note 1. EJX/EJA-E Series pressure transmitters
with optional code /KS21 for use in
hazardous locations:
• No. DEKRA 11ATEX0228 X
• Applicable Standard:
EN 60079-0:2012+A11:2013
EN 60079-11:2012
• Type of Protection and Marking code:
Ex ia IIC T4 Ga
Ex ia IIIC T85 ºC T100 ºC T120 ºC Db
• Group: II
• Category: 1G, 2D
• Ambient Temperature for EPL Ga:
–50 to 60°C
• Ambient Temperature for EPL Db:
–30* to 60°C
* –15°C when /HE is specified.
• Process Temperature (Tp.): 120°C max.
• Maximum Surface Temperature for EPL Db:
T85°C (Tp.: 80°C)
T100°C (Tp.: 100°C)
T120°C (Tp.: 120°C)
• Enclosure: IP66 / IP67
To satisfy IP66 or IP67, apply waterproof
glands to the electrical connection port.
Note 2 Electrical Data
• In type of explosion protection intrinsic safety
Ex ia IIC or Ex ia IIIC, only for connection to a
certified intrinsically safe circuit with following
maximum values:
Ui = 30 V
Ii = 200 mA
Pi = 0.9 W
(Linear Source)
Maximum internal capacitance; Ci = 27.6 nF
Maximum internal inductance; Li = 0 µH
Note 3. Installation
• Refer to the control drawing. All wiring shall
comply with local installation requirements.
Pressure Transmitters
Supply
Safety Barrier *1
Nonhazardous Location
[Control Drawing]
Hazardous Location
+
–
+
–
F0206.ai
*1: Any safety barriers must be a linear power source
whose output current is resistively limited.
Note 4. Maintenance and Repair
•
The instrument modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void
DEKRA Intrinsically safe Certification.
