Yokogawa EJA438 - Manual (Page 14)

IM 1C22J1-01E 2-6
2. HANDLING CAUTIONS
Non-hazardous
Location
Equipment
42 V DC Max.
4 to 20 mA DC
Signal
Non-Hazardous
Locations
Hazardous Locations Division 1
Non-Hazardous
Locations
Hazardous Locations Division 2
50 cm Max.
Sealing Fitting
Conduit
EJA Series
Non-hazardous
Location
Equipment
42 V DC Max.
4 to 20 mA DC
Signal
Sealing Fitting
EJA Series
F0205.EPS
c. CSA Intrinsically Safe Type/CSA
Explosionproof Type
Model EJA Series pressure transmitters with
optional code /CU1 can be selected the type of
protection (CSA Intrinsically Safe or CSA
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.
2.9.3 SAA Certification
a. SAA Intrinsically Safe Type
Caution for SAA Intrinsically safe type and Type n.
Note 1. Model EJA Series differential, gauge, and
absolute pressure transmitters with
optional code /SU1 are applicable for use
in hazardous locations.
• Type of Protection and Marking Code:
Ex ia IIC T4 (Tamb = 60
°
C) IP67 Class I Zone 0
• Type of Protection and Marking Code:
Ex n IIC T4 (Tamb = 60
°
C) IP67 Class I Zone 2
• Ambient Temperature: –40 to 60
°
C
Note 2. Entity Parameters
• Intrinsically safe rating of the transmitters are as
follows.
Maximum Input Voltage (Ui) = 30 V
Maximum Input Current (Ii) = 165 mA
Maximum Input Power (Pi) = 0.9 W
Maximum Internal Capacitance (Ci) = 0.02
µ
F
Maximum Internal Inductance (Li) = 0.73 mH
Note 3. Wiring
• All Wiring shall comply with the Australian
Standard.
Note 4. Maintenance and Repair
• The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void Standards Association of Australia
Intrinsically safe and Type n Certification.
(Zone 0)
EJA Series
Pressure
Transmitter Safety Barrier *1
Hazardous Location Nonhazardous Location
+
–
+
–
[Intrinsic Safety]
F0206.EPS
*1: Any safety barriers used for the output current must be
limited by a resistor “R” such that Imaxout-Uz/R.
[Type n]
(Zone 2)
EJA Series
Pressure
Transmitter Power Supply *2
Hazardous Location
+
–
+
–
F0207.EPS
*2: The voltage of the power supply is not exceed 30V dc.
b. SAA Flameproof Type
Caution for SAA flameproof type.
Note 1. Model EJA Series differential, gauge, and
absolute pressure transmitters with
optional code /SU1 are applicable for use
in hazardous locations:
• Type of Protection and marking Code:
Ex d II C T* IP67 Class I Zone 1 (T* see schedule)
• Temperature Class: T6, T5, and T4
• Process Temperature:
85
°
C (T6), 100
°
C (T5), and 120
°
C (T4)