<2. Notes on Handling>
2-5
IM 01C50B01-01E
• When installed in Division 2, “FACTORY
SEALED, CONDUIT SEAL NOT REQUIRED”.
Note 3. Operation
• Keep strictly the “WARNING” on the label
attached on the transmitter.
WARNING: OPEN CIRCUIT BEFORE
REMOVING COVER. OUVRIR LE
CIRCUIT AVANT D´ENLEVER LE
COUVERCLE.
• Take care not to generate mechanical spark
when access to the instrument and peripheral
devices in 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 Canadian
Standards Explosionproof Certification.
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
F0204.ai
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 ATEX Certification
Model YTA110/KU2, YTA310/KU2 and YTA320
/KU2 temperature transmitters can be selected the
type of protection (ATEX Intrinsically Safe “ia” or
ATEX Flameproof or ATEX Intrinsically Safe “ic”) 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.
