IM 01C25F01-01E
2-7
2. HANDLING CAUTIONS
• WARNING:
WHEN AMBIENT TEMPERATURE
≥
65
°
C,
USE THE HEAT-RESISTING CABLES
≥
90
°
C.
QUAND LA TEMPÉRATURE AMBIANTE
≥
65
°
C, UTILISEZ DES CÂBLES RÉSISTANTES Á
LA CHALEUR
≥
90
°
C.
• Take care not to generate mechanical sparking
when accessing to the instrument and peripheral
devices in a hazardous location.
Note 4. Maintenance and Repair
• The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation and Yokogawa
Corporation of America is prohibited and will void
Canadian Standards Explosionproof Certification.
c. CSA Intrinsically Safe Type/CSA
Explosionproof Type
Model EJX Series pressure transmitters with
optional code /CU1 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. 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.
2.9.3 CENELEC ATEX (KEMA)
Certification
(1) Technical Data
a. CENELEC ATEX (KEMA) Intrinsically Safe
Type
Caution for CENELEC ATEX (KEMA) Intrinsi-
cally safe type.
Note 1. Model EJX Series differential, gauge, and
absolute pressure transmitters with
optional code /KS2 for potentially explo-
sive atmospheres:
• No. KEMA 03ATEX1544 X
• Applicable Standard: EN 50014, EN 50020,
EN 50284, EN 50281-1-1
• Type of Protection and Marking code:
EEx ia IIC T4
• Group: II
• Category: 1G, 1D
• Ambient Temperature for gas-proof: –50 to 60
°
C
• Process Temperature (Tp.): 120
°
C max.
• Maximum Surface Temperature for dust-proof:
T85
°
C (Tamb.: –40 to 60
°
C, Tp.: 80
°
C)
T100
°
C (Tamb.: –40 to 60
°
C, Tp.: 100
°
C)
T120
°
C (Tamb.: –40 to 60
°
C, Tp.: 120
°
C)
• Enclosure: IP66 and IP67
Note 2. Electrical Data
• In type of explosion protection intrinsic safety EEx
ia IIC only for connection to a certified intrinsically
safe circuit with following maximum values:
Ui = 30 V
Ii = 200 mA
Pi = 0.9 W
Effective internal capacitance; Ci = 10 nF
Effective internal inductance; Li = 0 mH
Note 3. Installation
• All wiring shall comply with local installation
requirements. (Refer to the installation diagram)
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 KEMA Intrinsically safe Certification.
Note 5. Special Conditions for Safe Use
• In the case where the enclosure of the Pressure
Transmitter is made of aluminium, if it is mounted
in an area where the use of category 1 G apparatus
is required, it must be installed such, that, even in
the event of rare incidents, ignition sources due to
impact and friction sparks are excluded.
Transmitter
Supply
Safety Barrier *1
Nonhazardous Location
[Installation Diagram]
Hazardous Location
+
–
+
–
F0208.EPS
*1: In any safety barriers used the output current must be limited
by a resistor “R” such that Imaxout-Uz/R.
b. CENELEC ATEX (KEMA) Flameproof Type
Caution for CENELEC ATEX (KEMA) flameproof
type.
Note 1. Model EJX Series differential, gauge, and
absolute pressure transmitters with
optional code /KF2 for potentially explo-
sive atmospheres:
