Yokogawa EJA118 - Manual (Page 15)

IM 1C22H1-01E 2-7
2. HANDLING CAUTIONS
(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)
• Supply voltage: 42 V dc max.
• Output Signal: 4 to 20 mA
• Ambient Temperature: –40 to 80
°
C
Note 2. Wiring
• All wiring shall comply with the Australian
Standard.
Note 3. Operation
• Keep the “CAUTION” label attached to the
transmitter.
CAUTION: AMBIENT TEMPERATURE
ABOVE 75 DEG C SELECT SUITABLE
CABLE. DISCONNECT POWER AND
WAIT 1 MINUTE BEFORE REMAKING
COVER
• 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 modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void Standards Association of Australia
Flameproof Certification.
2.9.4 CENELEC (KEMA)/IEC (KEMA)
Certification
a. CENELEC (KEMA) Intrinsically Safe Type
Caution for CENELEC (KEMA) intrinsically safe
type.
Note 1. Model EJA Series differential, gauge, and
absolute pressure transmitters with
optional code /KS1 for potentially explo-
sive atmospheres:
• Type of Protection and Marking code:
EEx ia IIC T4
• Temperature Class: T4
• Process Temperature: 120
°
C max.
• Ambient Temperature: –40 to 60
°
C
Note 2. Electrical Data
• In type of explosion protection intrinsic safety EEx
ia IIC only for connection to a certified intrinsically
safe circuit with following maximum values:
Ui = 30 V
Ii = 165 mA
Pi = 0.9 W
Effective internal capacitance; Ci = 22.5 nF
Effective internal inductance; Li = 730
µ
H
Note 3. Installation
• All wiring shall comply with local installation
requirements. (Refer to the installation diagram)
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 KEMA Intrinsically safe Certification.
Transmitter
Supply Safety Barrier *1
Nonhazardous Location
[Installation Diagram]
Hazardous Location
+
–
+
–
F0208.EPS
*1: In any safety barriers used the output current must be limited
by a resistor “R” such that Imaxout-Uz/R.