<2. Handling Cautions>
2-4
IM 01C25C01-01E
2.9 Installation of an Explosion-
Protected Instrument
NOTE
For F
OUNDATION
Fieldbus explosion protected
type, please refer to IM 01C25T02-01E.
For PROFIBUS PA explosion protected type,
please refer to IM 01C25T04-01EN.
If a customer makes a repair or modification to
an intrinsically safe or explosionproof instrument
and the instrument is not restored to its original
condition, its intrinsically safe or explosionproof
construction may be compromised and the
instrument may be hazardous to operate. Please
contact Yokogawa before making any repair or
modification to an instrument.
CAUTION
This instrument has been tested and certified
as being intrinsically safe or explosionproof.
Please note that severe restrictions apply to this
instrument’s construction, installation, external
wiring, maintenance and repair. A failure to abide
by these restrictions could make the instrument a
hazard to operate.
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
