<2. Handling Cautions>
2-10
IM 01C25K01-01E
F0213.ai
Three-Wire Connection
Pressure Transmitters
Power Supply
Voltmeter
SUPPLY –
A
+
–
+
–
Four-Wire Connection
Pressure Transmitters
Power Supply
Voltmeter
SUPPLY –
A
+
–
+
–
Note 4. Operation
•
Keep the “WARNING” label attached to the
transmitter.
WARNING: AFTER DE-ENERGIZING,
DELAY 5 MINUTES BEFORE OPENING.
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.
Note 5. Special Conditions for Safe Use
WARNING
• Electrostatic charge may cause an exlosion
hazard. Avoid any actions that cause the
generation of electrostatic charge, such as
rubbing with a dry cloth on coating face of
the product.
• 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 2D apparatus is required, it shall
be installed in such a way that the risk from
electrostatic discharges and propagating
brush discharges caused by rapid flow of
dust is avoided.
• The instrument modification or parts
replacement by other than an authorized
Representative of Yokogawa Electric
Corporation is prohibited and will void the
certification.
c. ATEX Intrinsically Safe Type/ATEX
Flameproof Type
EJX/EJA-E Series pressure transmitters with
optional code /KU22 or /V1U1 can be selected
the type of protection ATEX Flameproof,
Intrinsically Safe. Ex ia, or Ex ic for use in
hazardous area.
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 user’s 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.
● ATEX Intrinsically Safe Ex ic
Caution for ATEX intrinsically safe Ex ic
• Applicable Standard:
EN 60079-0:2009/EN 60079-0:2012,
EN 60079-11:2012
• Type of Protection and Marking Code:
II 3G Ex ic IIC T4 Gc
• Ambient Temperature: –30* to +60°C
* –15°C when /HE is specified.
• Ambient Humidity:
0 to 100% (No condensation)
• Maximum Process Temperature: 120°C
• IP Code: IP66
• Ambient pollution degree: 2
• Overvoltage category: I
Note 1. Electrical Data
Ui = 30 V
Ci = 27.6 nF
Li = 0 µH
Note 2. Installation
• All wiring shall comply with local installation
requirements. (refer to the control drawing)
• Cable glands, adapters and/or blanking
elements shall be of Ex “n”, Ex “e” or Ex “d”
and shall be installed so as to maintain the
specified degree of protection (IP Code) of
the transmitters.
