<2. Handling Cautions>
2-4
IM 01C25W05-01EN
Low pressure side transmitter (slave)
Ground terminal
(Inside)
Ground terminal
(Outside)
High pressure side transmitter (master)
Ground terminal
(Inside)
Ground terminal
(Outside)
F0203.ai
Figure 2.3
Ground terminal
2.9 Installation of an Explosion-
Protected Instrument
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 Type
Caution for FM intrinsically safe type. (Following
contents refer “DOC. No. IIE028-A101”)
Certification information
Warning:
A modification of the equipment would no
longer comply with the construction described
in the certificate documentation.
Note 1. EJX/EJA-E Series Differential, gauge
and absolute pressure transmitters with
optional code /FS14 are applicable for use
in hazardous locations.
• Applicable Standard:
Class 3600:2018, Class 3610:2018,
Class 3611:2018, Class 3810:2018,
ANSI/UL-60079-0:2013,
ANSI/UL-60079-11:2014,
NEMA 250-2014,
ANSI/IEC 60529-2004 (R2011)
• Intrinsically Safe for
Class I, Division 1, Groups A, B, C, D;
Class II, Division 1, Groups E, F, G;
Class III, Division 1;
Class I, Zone 0, Group IIC, AEx ia
