<2. Handling Cautions>
2-4
IM 01C25B01-01E
WARNING
Maintaining the safety of explosionproof
equipment requires great care during mounting,
wiring, and piping. Safety requirements also
place restrictions on maintenance and repair.
Please read the following sections very carefully.
WARNING
The range setting switch must not be used in a
hazardous area.
IMPORTANT
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.
IMPORTANT
All the blind plugs which accompany the EJX/
EJA-E transmitters upon shipment from the
factory are certified by the applicable agency in
combination with those transmitters. The plugs
which are marked with the symbols “◊ Ex” on
their surfaces are certified only in combination
with the EJX/EJA-E series transmitters.
2.9.1 FM Approval
a. FM Intrinsically Safe/Nonincendive for
HART/BRAIN Protocol Type
Note 1. EJX/EJA-E Series pressure transmitters
with optional code /FS1 are applicable for
use in hazardous locations.
• Applicable Standard:
FM 3600:2011
FM 3610:2010
FM 3611:2004
FM 3810:2005
ANSI/ISA-60079-0-2009
ANSI/ISA-60079-11-2009
ANSI/ISA-61010-1-2004
NEMA 250:1991
• Rating
Intrinsically Safe for
Class I, II, III Division 1,
Groups A, B, C, D, E, F, G T4
Class I Zone 0 AEx ia IIC T4
Nonincendive for
Class I, II, III Division 2
Groups A, B, C, D, F, G T4
Class I, Zone 2 Group IIC T4
• Ambient temperature: –60 to 60°C
• Enclosure: Type 4X
Note 2. Installation
Installation should be in accordance with
Control Drawing IFM022-A12.
Note 3. Specific conditions of use
Precautions shall be taken to minimize the risk
from electrostatic discharge of painted parts.
When the enclosure of the Pressure
Transmitters is made of aluminum alloy, if it is
mounted in Zone 0, it shall be installed such
that, even in the event of rare incidents, an
ignition source due to impact and/or friction
sparks is excluded.
Note 4. Maintenance and Repair
Only personnel authorized by Yokogawa
Electric Corporation can repair the equipment.
