Manual
<2. Handling Cautions>
2-8
IM 01C25R03-01E
b. ATEX Flameproof Type
Caution for ATEX ameproof type
Note 1. Model EJX Series pressure transmitters
with optional code /KF22 for potentially
explosive atmospheres:
• No. KEMA 07ATEX0109 X
• Applicable Standard: EN 60079-0:2009,
EN 60079-1:2007, EN 60079-31:2009
• Type of Protection and Marking Code:
Ex d IIC T6...T4 Gb, Ex tb IIIC T85°C Db
• Group: II
• Category: 2G, 2D
• Enclosure: IP66 / IP67
• Temperature Class for gas-poof:
T6, T5, and T4
• Ambient Temperature for gas-proof:
–50 to 75°C (T6), –50 to 80°C (T5), and
–50 to 75°C (T4)
• Maximum Process Temperature (Tp.) for
gas-proof:
85°C (T6), 100°C (T5), and 120°C (T4)
• Maximum Surface Temperature for dust-
proof:
T85°C (Tamb.: –30* to 75°C, Tp.: 85°C)
* –15°C when /HE is specied.
Note 2. Electrical Data
• Supply voltage: 42 V dc max.
• Output signal: 4 to 20 mA
Note 3. Installation
• All wiring shall comply with local installation
requirement.
• The cable entry devices shall be of a certied
ameproof type, suitable for the conditions of
use.
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
gerenation of eletrostatic 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 ow of
dust is avoided.
• The instrument modication or parts
replacement by other than an authorized
Representative of Yokogawa Electric
Corporation is prohibited and will void the
certication.
• To satisfy IP66 or IP67, apply waterproof
glands to the electrical connection port.
(2) Electrical Connection
A mark indicating the electrical connection type is
stamped near the electrical connection port. These
marks are as follows.
F0207.ai
Location of the mark
ISO M20×1.5 female
ANSI 1/2 NPT female
MarkingScrew Size
N or W
M
(3) Installation
WARNING
• All wiring shall comply with local installation
requirements and the local electrical code.
• There is no need for a conduit seal in
Division 1 and Division 2 hazardous
locations because this product is sealed at
the factory.