IM 01C50B01-01E
2-5
2. NOTES ON HANDLING
Sensor
Sensor
Non-hazardous
Location
Equipment
42 V DC Max.
4 to 20 mA DC
Signal
NON-HAZARDOUS
LOCATIONS
HAZARDOUS LOCATIONS DIVISION 1
50 cm Max.
Sealing Fitting
Conduit
Non-hazardous
Location
Equipment
42 V DC Max.
4 to 20 mA DC
Signal
NON-HAZARDOUS
LOCATIONS
HAZARDOUS LOCATIONS DIVISION 2
Sealing Fitting
Sealing Fitting
50 cm Max.
Certified/Listed Temperature Sensor
Explosionproof Class I, Groups C and D
Dustignitionproof Class II, Groups E, F and G, Class III
Wiring method shall be suitable for the specified hazardous locations.
YTA Series
YTA Series
Conduit
F0203.EPS
Certified/Listed Temperature Sensor
Explosionproof Class I, Groups C and D
Dustignitionproof Class II, Groups E, F and G, Class III
Wiring method shall be suitable for the specified hazardous locations.
2.7.2 CENELEC ATEX (KEMA) Certification
Model YTA110/KU2, YTA310/KU2 and YTA320/
KU2 temperature transmitters can be selected the type
of protection (CENELEC ATEX(KEMA) Intrinsically
Safe or CENELEC ATEX(KEMA) Flameproof or
CENELEC ATEX Type of Protection “n”) 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.
(1) Technical Data
a) CENELEC ATEX (KEMA) Intrinsically Safe
Type
Caution for CENELEC ATEX (KEMA) Intrinsically
safe type
Note 1. Model YTA110/KU2, YTA310/KU2 and
YTA320/KU2 temperature transmitters for
potentially explosive atmospheres:
• No. KEMA 02ATEX1026X
• Applicable Standard: EN 50014, EN 50020, EN
50284
• Type of Protection and Marking code: II 1G EEx ia
IIC T5, T4
• Temperature Class: T5, T4
• Ambient Temperature: –40 to 70
°
C for T4, –40 to
50
°
C for T5
• Enclosure: IP67
Note 2. Electrical Data
• In type of explosion protection intrinsic safety II 1G
EEx ia IIC only for connection to a certified
intrinsically safe circuit with following maximum
values:
• [Supply circuit]
Ui = 30 V
Ii = 165 mA
Pi = 900 mW
Effective internal capacitance, Ci = 20 nF
Effective internal inductance, Li = 660
µ
H
• [Sensor circuit]
Uo = 8.6 V
Io = 30 mA
Po = 70 mW
Max. allowed external capacitance, Co = 3
µ
F
Max. allowed external inductance, Lo = 20 mH
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.
