<2. Handling Cautions>
2-8
IM 01C25K01-01E
F0212.ai
Three-Wire Connection
Pressure Transmitters
Power Supply
Voltmeter
SUPPLY –
A
+
–
+
–
Four-Wire Connection
Pressure Transmitters
Power Supply
Voltmeter
SUPPLY –
A
+
–
+
–
Note 3. Operation
•
WARNING:
AFTER DE-ENERGIZING, DELAY 5
MINUTES BEFORE OPENING.
APRÉS POWER-OFF, ATTENDRE 5
MINUTES AVANT D'OUVRIR.
•
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
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. 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 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 potentially
explosive atmospheres:
•
No. DEKRA 11ATEX0228 X
•
Applicable Standard:
EN 60079-0:2009, EN 60079-11:2007,
EN 60079-26:2007, EN 61241-11:2006
•
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
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
