<2. Handling Cautions>
2-15
IM 01C25F01-01E
• The instrument modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void IECEx
certification.
F0216.ai
EJX/EJA-E Series
Pressure Transmitters
Associated apparatus
Supply
Hazardous Location
Nonhazardous Location
+
–
+
–
[Ex ic]
Note 4. Specific Condition of Use
WARNING
• Electrostatic charge may cause an explosion
hazard. Avoid any actions that cause the
generation of electrostatic charge, such as
rubbing with a dry cloth on coating face of
the product.
• The apparatus is not capable of dielectric
strength tests required by IEC 60079-11.
This must be taken into account when
installing the apparatus.
c. IECEx Flameproof Type
Caution for IECEx flameproof type.
Note 1. EJX/EJA-E Series pressure transmitters
with optional code /SF2 or /SU21 are
applicable for use in hazardous locations:
• No. IECEx CSA 07.0008
• Applicable Standard: IEC60079-0:2011,
IEC60079-1:2007-4
• Flameproof for Zone 1, Ex d IIC T6...T4 Gb
• Enclosure: IP66/IP67
• Maximum Process Temperature: 120°C (T4),
100°C (T5), 85°C (T6)
• Ambient Temperature: –50 to 75°C (T4),
–50 to 80°C (T5), –50 to 75°C (T6)
• Supply Voltage: 42 V dc max.
32 V dc max. (F
OUNDATION
Fieldbus and
PROFIBUS PA type)
9 to 28 V dc, 27 mW (Low Power type)
• Output Signal: 4 to 20 mA dc
15 mA (F
OUNDATION
Fieldbus and
PROFIBUS PA type)
1 to 5 V (Low Power type)
Note 2. Wiring
• In hazardous locations, the cable entry
devices shall be of a certified flameproof
type, suitable for the conditions of use and
correctly installed.
• Unused apertures shall be closed with
suitable flameproof certified blanking
elements.
• Wiring connection for output signal code Q
(Low Power type) shall follow the diagram
below.
F0214.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.
• WARNING:
WHEN THE AMBIENT TEMP.≥65°C, USE
HEAT-RESISTING CABLE AND CABLE
GLAND ≥90°C.
• Take care not to generate mechanical
sparking when accessing to the instrument
and peripheral devices in a hazardous
location.
• Electrostatic charge may cause an explosion
hazard. Avoid any actions that cause the
generation of electrostatic charge, such as
rubbing with a dry cloth on coating face of the
product.
