Yokogawa EJA438 - Manual (Page 15)

IM 1C22J1-01E 2-7
2. HANDLING CAUTIONS
• 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.
b. CENELEC (KEMA) Flameproof Type
Caution for CENELEC (KEMA) flameproof type.
Note 1. Model EJA Series differential, gauge, and
absolute pressure transmitters with
optional code /KF1 for potentially explo-
sive atmospheres:
• Type of Protection and Marking Code: EEx d IIC
T6···T4
• Temperature Class: T6, T5, and T4
• Maximum Process Temperature:
85
°
C (T6), 100
°
C (T5), and 120
°
C
• Ambient Temperature: –40 to 80
°
C
Note 2. Electrical Data
• Supply voltage: 42 V dc max.
• Output signal: 4 to 20 mA
Note 3. Installation
• All wiring shall comply with local installation
requirement.
• The cable entry devices shall be of a certified
flameproof type, suitable for the conditions of use.
Note 4. Operation
• Keep the “CAUTION” label to the transmitter.
CAUTION: WAIT 1 MIN. AFTER
POWER-DISCONNECTION, BEFORE
OPENING THE ENCLOSURE.
• Take care not to generate mechanical sparking
when accessing to the instrument and peripheral
devices in a hazardous location.
Note 5. Maintenance and Repair
• The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void KEMA Flameproof Certification.