<2. Handling Cautions>
2-5
IM 01C25C01-01E
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.
Model: EJX Series
Date: October 22, 2003
Rev.2: July 16, 2019
Doc. No.:
IFM022-A12 P.1
Yokogawa Electric Corporation
Control Drawing
Class I, II, III, Division 1
Groups A, B, C, D, E, F, G
Class I, Zone 0, Group IIC
EJX Series
Pressure Transmitter
Suppl
y
Class I, II, Division 2
Groups A, B, C, D, F, G
Class III, Division 1
Class I, Zone 2, Group IIC
EJX Series
Pressure Transmitter
Suppl
y
(Refer to Note
4
)
A
ssociated Apparatus
(Safety Barrier)
General
P
urpose
E
quipment
General
P
urpose
E
quipment
Model: EJX Series
Date: October 22, 2003
Rev.3: July 16, 2019
Doc. No.:
IFM022-A12 P.2
Yokogawa Electric Corporation
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 must be installed such that, even in the event of rare
incidents, an ignition source due to impact and/or friction sparks is excluded.
Entity Parameters [Groups: A, B, C, D, E, F and G]
Vmax: 30 V
Imax: 200 mA
Pmax: 1 W
Ci: 6 nF
Li: 0 µH
Entity Parameters [Groups: C, D, E, F and G]
Vmax: 30 V
Imax: 225 mA
Pmax: 1 W
Ci: 6 nF
Li: 0 µH
Notes:
1.
Installation must be in accordance with the National Electric Code (NFPA70),
ANSI/ISA-RP12.06.01, and relevant local codes.
2.
The Associated Apparatus must be FM-approved.
3.
The following conditions must be satisfied.
Voc (or Uo) ≤
Vmax
Isc (or Io) ≤ I
max
Po ≤ P
max
Ca (or Co) ≥ Ci + Ccable
La (or Lo) ≥ Li + Lcable
4.
In case Nonincendive Field Wiring Concept is used for the interconnection,
FM-approved Associated Nonincendive Field Wiring Apparatus, which meets the
above conditions, must be used as the General Purpose Equipment.
5.
The General Purpose Equipment connected to the Associated Apparatus must not
use or generate a voltage more than Um of the Associated Apparatus.
6.
The control drawing of the Associated Apparatus must be followe d when installing
the equipment.
7.
Dust-tight conduit seals must be used when installed in Class II or Class III
environments.
8.
WARNING –ELECTROSTATIC CHARGE MAY CAUSE AN EXPLOSION HAZARD.
AVOID ANY ACTIONS THAT CAUSE THE GENERATION OF ELECTROSTATIC
CHARGE, SUCH AS RUBBING WITH A DRY CLOTH ON COATING FACE OF THE
PRODUCT.
9.
WARNING – SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC
SAFETY AND SUITABILITY FOR HAZARDOUS LOCATION
b. FM Explosionproof Type
Caution for FM explosionproof type.
Note 1. EJX/EJA-E Series pressure transmitters
with optional code /FF1 are applicable for
use in hazardous locations.
• Applicable Standard: FM3600:2018,
FM3615:2018, FM3810:2018,
NEMA 250:2003, ANSI/UL 61010-1:2012,
ANSI/UL 61010-2-30:2012
• Explosionproof for Class I, Division 1,
Groups B, C and D.
• Dust-ignitionproof for Class II/III, Division 1,
Groups E, F and G.
• Enclosure: Type 4X
• Temperature Class: T6
• Ambient Temperature: –40 to 60°C
• Supply Voltage: 42 V dc max.
32 V dc max. (F
OUNDATION
Fieldbus and
PROFIBUS PA type)
9 to 28 V dc, 27 mW (Low Power type)
• Output signal: 4 to 20 mA
15 mA (F
OUNDATION
Fieldbus and
PROFIBUS PA type)
1 to 5 V (Low Power type)
