<2. Handling Cautions>
8
IM 01C22A01-01E
Note 3. Operation
• Keep the “CAUTION” nameplate attached to the
transmitter.
CAUTION: OPEN CIRCUIT BEFORE
REMOVING COVER. FACTORY SEALED,
CONDUIT SEAL NOT REQUIRED. INSTALL
IN ACCORDANCE WITH THE INSTRUCTION
MANUAL IM 1C22.
• Take care not to generate mechanical sparking when
accessing to the instrument and peripheral devices in
a hazardous location.
Note 4. Maintenance and Repair
• The instrument modifi cation or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void Factory
Mutual Explosionproof Approval.
c. FM Intrinsically Safe Type/FM
Explosionproof Type
Model EJA Series pressure transmitters with optional
code /FU1 can be selected the type of protection (FM
Intrinsically Safe or FM Explosionproof) for use in
hazardous locations.
Note 1. For the installation of this transmitter, once a
particular type of protection is selected, any
other type of protection cannot be used. The
installation must be in accordance with the
description about the type of protection in this
instruction manual.
Note 2. In order to avoid confusion, unnecessary
marking is crossed out on the label other
than the selected type of protection when the
transmitter is installed.
2.4.2 CSA Certifi cation
a. CSA Intrinsically Safe Type
Caution for CSA Intrinsically safe type. (Following
contents refer to “DOC No. ICS003-A12 P.1-1 and
P.1-2.”)
Note 1. Model EJA Series differential, gauge, and
absolute pressure transmitters with optional
code /CS1 are applicable for use in hazardous
locations
Certifi cate: 1053843
• Applicable Standard: C22.2 No.0, No.0.4, No.25,
No.30, No.94, No.142, No.157, No.213
• Intrinsically Safe for Class I, Division 1, Groups A,
B, C & D. Class II, Division 1, Groups E, F & G and
Class III, Division 1 Hazardous Locations.
• Nonincendive for Class I, Division 2, Groups A, B, C
& D, Class II, Division 2, Groups F & G, and Class III,
Hazardous Locations. (not use Safety Barrier)
• Encl. “Type 4X”
• Temperature Class: T4
• Ambient temperature: –40 to 60°C
• Process Temperature: 120°C max.
Note 2 Entity Parameters
• Intrinsically safe ratings are as follows:
Maximum Input Voltage (Vmax) = 30 V
Maximum Input Current (Imax) = 165 mA
Maximum Input Power (Pmax) = 0.9 W
Maximum Internal Capacitance (Ci) = 22.5 nF
Maximum Internal Inductance (Li) = 730 μH
* Associated apparatus (CSA certifi ed barriers)
Maximum output voltage (Voc) ≤ 30 V
Maximum output current (Isc) ≤ 165 mA
Maximum output power (Pmax) ≤ 0.9 W
Note 3. Installation
• All wiring shall comply with Canadian Electrical Code
Part I and Local Electrical Codes.
• The instrument modifi cation or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation and Yokogawa Corporation
of America is prohibited and will void Canadian
Standards Intrinsically safe and nonincendive
Certifi cation.
F0205.ai
Class I, II, III, Division 1,
Groups A, B, C, D, E, F, G
EJA Series Pressure
Transmitters
EJA Series Pressure
Transmitters
Safety Barrier
Supply
Supply
Hazardous Location Non-hazardous Location
Hazardous Location Non-hazardous Location
General
Purpose
Equipment
+
–
+
–
+
–
+
–
+
–
+
–
[Intrinsically Safe]
Class I, II, Division 2,
Groups A, B, C, D, E, F, G
Class III, Division 1.
Not Use
Safety Barrier
[Nonincendive]
General
Purpose
Equipment
b. CSA Explosionproof Type
Caution for CSA explosionproof type.
Note 1. Model EJA Series differential, gauge, and
absolute pressure transmitters with optional
code /CF1 are applicable for use in hazardous
locations:
Certifi cate: 1089598
• Applicable Standard: C22.2 No.0, No.0.4, No.25,
No.30, No.94, No.142
• Explosionproof for Class I, Division 1, Groups B, C
and D.
• Dust-ignitionproof for Class II/III, Division 1, Groups E,
F and G.
• Encl “Type 4X”
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