YOKOGAWA YTA110/CU1, YTA310/CU1, YTA320/CU1 User Manual
User's
Manual
YTA Series
Temperature T ransmitter s
(Hard ware)
[Style: S2]
IM 01C50B01-01E
Yokogawa Electric Corporation
IM 01C50B01-01E
8th Edition
CONTENTS
CONTENTS
1. PREFACE ......................................................................................................1-1
䊏 Notes on the Instruction Manual............................................................... 1-1
䊏 Notes on Safety and Modifications ........................................................... 1-1
䊏 For Safety Using ....................................................................................... 1-1
䊏 Warranty.................................................................................................... 1-2
䊏 Trade Mark................................................................................................ 1-2
2. NOTES ON HANDLING ................................................................................2-1
2.1 Nameplate ........................................................................................... 2-1
2.2 Transport ............................................................................................. 2-1
2.3 Storage................................................................................................ 2-1
2.4 Choosing the Installation Location...................................................... 2-1
2.5 Use of a Transceiver........................................................................... 2-2
2.6 Insulation Resistance Test and Withstand Voltage Test.................... 2-2
2.6.1 Insulation resistance test procedure ............................................ 2-2
2.6.2 Withstand voltage test procedure ................................................ 2-3
2.7 Installation of Explosion Protected Type Transmitters ....................... 2-3
2.7.1 CSA Certification .......................................................................... 2-3
2.7.2 CENELEC ATEX (KEMA) Certification ........................................ 2-5
2.7.3 CENELEC (KEMA) Certification................................................... 2-8
2.7.4 FM Certification ............................................................................ 2-9
2.7.5 JIS Certification .......................................................................... 2-11
2.7.6 SAA Certification ........................................................................ 2-11
2.8 EMC Conformity Standards .............................................................. 2-12
3. PART NAMES AND FUNCTIONS ................................................................3-1
3.1 Part Names ......................................................................................... 3-1
3.2 Setting the Hardware Error Burnout Change-over Switch ................. 3-2
3.3 Built-in Indicator Display Function ...................................................... 3-2
4. INSTALLATION.............................................................................................4-1
5. WIRING..........................................................................................................5-1
5.1 Notes on Wiring .................................................................................. 5-1
5.2 Loop Construction ............................................................................... 5-1
5.3 Cable Selection ................................................................................... 5-2
5.3.1 Input signal Cable Selection ........................................................ 5-2
5.3.2 Output Signal Cable Selection ..................................................... 5-2
5.4 Cable and Terminal Connections ....................................................... 5-2
5.4.1 Input Terminal Connections ......................................................... 5-2
5.4.2 Output Terminal Connection ........................................................ 5-3
5.5 Wiring Cautions................................................................................... 5-4
5.6 Grounding............................................................................................ 5-5
FD No. IM 01C50B01-01E
8th Edition: May 2002(YK)
All Rights Reserved, Copyright © 1998, Yokogawa Electric Corporation
i
IM 01C50B01-01E
CONTENTS
6. MAINTENANCE............................................................................................. 6-1
6.1 General................................................................................................ 6-1
6.2 Calibration ........................................................................................... 6-1
6.2.1 Selection of Equipment for Calibration ........................................ 6-1
6.2.2 Calibration Procedure................................................................... 6-1
6.3 Disassembly and Assembly ................................................................ 6-2
6.3.1 Replacement of Built-in Indicator ................................................. 6-3
6.3.2 Replacement of CPU Assembly................................................... 6-3
6.4 Troubleshooting................................................................................... 6-4
6.4.1 Basic Troubleshooting Flow ......................................................... 6-4
6.4.2 Example of Troubleshooting Flow................................................ 6-4
6.5 Integral Indicator and Error Display .................................................... 6-6
7. STANDARD SPECIFICATIONS .................................................................... 7-1
7.1 Standard Specifications ...................................................................... 7-1
7.2 Model and Suffix Codes...................................................................... 7-5
7.3 Optional Specifications........................................................................ 7-5
7.4 Dimensions.......................................................................................... 7-7
INSTALLATION AND OPERATING PRECAUTIONS FOR JIS FLAMEPROOF
EQUIPMENT........................................................................................ EX-B03E
Customer Maintenance Parts List ..................................... CMPL 01C50B01-02E
REVISION RECORD
ii
IM 01C50B01-01E
1. PREFACE
1. PREFACE
The YTA temperature transmitter is fully factory-tested
according to the specifications indicated on the order.
In order for the YTA temperature transmitter to be
fully functional and to operate in an efficient manner,
the instruction manual must be carefully read to
become familiar with the functions, operation, and
handling of the YTA.
This Instruction Manual gives instructions on handling,
wiring and maintenance of YTA110, YTA310 and
YTA320 temperature transmitters. Changing the
parameter settings requires a terminal dedicated to the
HART Protocol or the BRAIN Protocol. For details on
how to set the parameters of these transmitters, refer to
the “BRAIN Protocol” IM 0lC50T03-01E or “HART
Protocol” IM 01C50T01-01E.
For FOUNDATION Fieldbus communication type,
please refer to IM 01C50T02-01E in addition to this
manual.
Notes on the Instruction Manual
• This manual should be delivered to the end user.
• The information contained in this manual is subject
to change without prior notice.
• The information contained in this manual, in whole
or part, shall not be transcribed or copied without
notice.
• In no case does this manual guarantee the merchant
ability of the transmitter or its adaptability to a
specific client need.
• Should any doubt or error be found in this manual,
submit inquiries to your local dealer.
•No special specifications are contained in this
manual.
• Changes to specifications, structure, and components
used may not lead to the revision of this manual
unless such changes affect the function and performance of the transmitter.
Notes on Safety and Modifications
• Before handling the YTA, it is absolutely imperative
that users of this equipment read and observe the
safety instructions mentioned in each section of the
manual in order to ensure the protection and safety
of operators, the YTA itself and the system containing the transmitter. We are not liable for any
accidents arising out of handling that does not
adhere to the guidelines established in the safety
instructions.
• No maintenance should be performed on explosionproof type temperature transmitters while the
equipment is energized. If maintenance is required
with the cover open, always first use a gas detector
to check that no explosive gases are present.
• If the user attempts to repair or modify an
explosionproof type transmitter and is unable to
restore it to its original condition, damage to the
explosionproof features result, leading to dangerous
conditions. Contact your authorized Yokogawa
Electric Corporation representative for repairs or
modifications of an explosionproof type transmitter.
For Safety Using
Please give your attention to the followings.
(a) Installation
• The instrument must be installed by an expert
engineer or a skilled personnel. The procedures
described about INSTALLATION are not permitted
for operators.
•In case of high process temperature, care should be
taken not to burn yourself because the surface of the
case reaches a high temperature.
• All installation shall comply with local installation
requirement and local electrical code.
(b) Wiring
• The instrument must be installed by an expert
engineer or a skilled personnel. The procedures
described about WIRING are not permitted for
operators.
• Please confirm that voltages between the power
supply and the instrument before connecting the
power cables and that the cables are not powered
before connecting.
(c) Maintenance
• Please do not carry out except being written to a
maintenance descriptions. When these procedures
are needed, please contact nearest YOKOGAWA
office.
•Care should be taken to prevent the build up of drift,
dust or other material on the display glass and
name plate. In case of its maintenance, soft and dry
cloth is used.
1-1
IM 01C50B01-01E
1. PREFACE
Symbols used in this Instruction Manual
The YTA temperature transmitter and this manual use
the following safety related symbols and signals.
WARNING
Contains precautions to protect against the
chance of explosion or electric shock which, if
not observed, could lead to death or serious
injury.
CAUTION
Contains precautions to protect against danger,
which, if not observed, could lead to personal
injury or damage to the instrument.
IMPORTANT
Contains precautions to be observed to protect
against adverse conditions that may lead to
damage to the instrument or a system failure.
NOTE
Contains precautions to be observed with regard
to understanding operation and functions.
Some of the diagrams in this instruction manual are
partially omitted, described in writing, or simplified for
ease of explanation. The screen drawings contained in
the instruction manual may have a display position or
characters (upper/lower case) that differ slightly from
the full-scale screen to an extent that does not hinder
the understanding of functions or monitoring of
operation.
Warranty
• The warranty period of the instrument is written on
the estimate sheet that is included with your purchase. Any trouble arising during the warranty
period shall be repaired free of charge.
• Inquiries with regard to problems with the instrument shall be accepted by the sales outlet or our
local dealer representative.
• Should the instrument be found to be defective,
inform us of the model name and the serial number
of the instrument together with a detailed description
of nonconformance and a progress report. Outline
drawings or related data will also be helpful for
repair.
• Whether or not the defective instrument is repaired
free of charge depends on the result of our inspection.
The following conditions shall not be
eligible for charge-exempt repair.
• Problems caused by improper or insufficient
maintenance on the part of the customer.
• Trouble or damage caused by mishandling, misusage, or storage that exceeds the design or specification requirements.
• Problems caused by improper installation location or
by maintenance conducted in a non-conforming
location.
• Trouble or damage was caused by modification or
repair that was handled by a party or parties other
than our consigned agent.
• Trouble or damage was caused by inappropriate
relocation following delivery.
•Trouble or damage was caused by fire, earthquake,
wind or flood damage, lightning strikes or other acts
of God that are not directly a result of problems with
this instrument.
Trade Mark
• HART is a trademark of the HART Communication
Foundation.
• Registered trademarks or trademarks appearing in
this manual are not designated by a TM or ®
symbol.
• Other company names and product names used in
this manual are the registered trademarks or trademarks of their respective owners.
1-2
IM 01C50B01-01E
2. NOTES ON HANDLING
2. NOTES ON HANDLING
The YTA temperature transmitter is fully factory-
tested upon shipment. When the YTA is delivered,
check the appearance for damage, and also check that
the transmitter mounting parts shown in Figure 2.1 are
included with your shipment. If “No Mounting
Bracket” is indicated, no transmitter mounting bracket
is included.
Nut for U-bolt
Mounting bracket
Spring washer
2.2 Transport
To prevent damage while in transit, leave the transmitter in the original shipping container until it reaches
the installation site.
2.3 Storage
When an extended storage period is expected, observe
the following precautions:
1. If at all possible, store the transmitter in factoryshipped condition, that is, in the original shipping
container.
2. Choose a storage location that satisfies the following requirements.
•A location that is not exposed to rain or water.
•A location subject to a minimum of vibration or
impact.
• The following temperature and humidity range is
recommended. Ordinary temperature and humidity
(25°C, 65%) are preferable.
Temperature: No Integral indicator –40 to 85°C
With Integral indicator –30 to 80°C
Humidity: 5 to 100% RH (at 40°C)
Transmitter fastening bolt
U-bolt
F0201.EPS
Figure 2.1 Transmitter mounting parts
2.1 Nameplate
The model name and configuration are indicated on
the nameplate. Verify that the configuration indicated
in the “Model and Suffix Code” in Chapter 7 is in
compliance with the specifications written on the order
sheet.
Specification code
TEMPERATURE
TRANSMITTER
YTA
DC24V
Made in Japan
Style code
Figure 2.2 Name plate
Model name
4~20mA DC
Serial No.
Factory-shipped range and unit
F0202.EPS
3. The performance of the transmitter may be impaired if stored in an area exposed to direct rain and
water. To avoid damage to the transmitter, install it
immediately after removal from shipping container.
Follow wiring instructions in Chapter 5.
2.4 Choosing the Installation
Location
Although the temperature transmitter is designed to
operate in a vigorous environment, to maintain
stability and accuracy, the following is recommended:
(1) Ambient Temperature
It is preferable to not to expose the instrument to
extreme temperatures or temperature fluctuations. If
the instrument is exposed to radiation heat a thermal
protection system and appropriate ventilation is
recommended.
(2) Environmental Requirements
Do not allow the instrument to be installed in a
location that is exposed to corrosive atmospheric
conditions. When using the instrument in a corrosive
environment, ensure the location is well ventilated.
The unit and its wiring should be protected from
exposure to rainwater.
2-1
IM 01C50B01-01E
2. NOTES ON HANDLING
(3) Impact and Vibration
It is recommended that the instrument be installed in a
location that is subject to a minimum amount of impact
and vibration.
2.5 Use of a Transceiver
Although the temperature transmitter is designed to
resist influence from high frequency noise; use of a
transceiver in the vicinity of installation may cause
problems. Installing the transmitter in an area free from
high frequency noise (RFI) is recommended.
2.6 Insulation Resistance Test and Withstand Voltage Test
CAUTION
(1) Overvoltage of the test voltage that is so
small that it does not cause an dielectric
breakdown may in fact deteriorate insulation
and lower the safety performance; to prevent
this it is recommended that the amount of
testing be kept to a minimum.
(2) The voltage for the insulation resistance test
must be 500 VAC or lower, and the voltage
for the withstand voltage test must be 500
VAC or lower. Failure to heed these guidelines may cause faulty operation.
(3) Where a built-in arrester is provided (suffix
code: /A), the voltage for the insulation
resistance test must be 100 VDC or lower,
and the voltage for the withstand voltage test
must be 100 VAC or lower. Failure to heed
these guidelines may cause faulty operation.
Follow the steps below to perform the test, the wiring
of the transmission line must be removed before
initiating testing.
2.6.1 Insulation resistance test procedure
Testing between the output terminal and
input terminal
1. Lay transition wiring between the + terminal, the -
terminal, and the check terminal of the terminal box.
2. Lay wiring across terminals 1, 2, 3, and 4 of the
terminal box.
3. Connect the insulation resistance meter (with the
power turned OFF) between the transition wiring of
Steps 1 and 2 above. The polarity of the input
terminals must be positive and that of the output
terminals must be negative.
4. Turn the power of the insulation resistance meter
ON and measure the insulation resistance. The
duration of the applied voltage must be the period
during which 100M⍀ or more is confirmed (or
20M⍀ if the unit is equipped with a built-in
arrester).
5. Upon completion of the test, remove the insulation
resistance meter, connect a 100K⍀ resistor between
the transition wiring, and allow the electricity to
discharge. Do not touch the terminal with your bare
hands while the electricity is discharging for more
than 1 second.
Testing between the output terminal and
grounding terminal
1. Lay transition wiring between the + terminal, the terminal, and the check terminal of the terminal box,
then connect an insulation resistance meter (with the
power turned OFF) between the transition wiring
and the grounding terminal. The polarity of the
transition wiring must be positive and that of the
grounding terminal must be negative.
2. Turn the power of the insulation resistance meter
ON and measure the insulation resistance. The
duration of the applied voltage must be the period
during which 100M⍀ or more is confirmed (or
20M⍀ if the unit is equipped with a built-in
arrester).
3. Upon completion of the test, remove the insulation
resistance meter, connect a 100K⍀ resistor between
the transition wiring and the grounding terminal, and
allow the electricity to discharge. Do not touch the
terminal with your bare hands while the electricity is
discharging for more than 1 second.
Testing between the input terminal and
grounding terminal
1. Lay transition wiring between terminals 1, 2, 3, 4
and 5 of the terminal box, and connect the insulation
resistor (with the power turned OFF) between the
transition wiring and the grounding terminal. The
polarity of the transition wiring must be positive and
that of the grounding terminal must be negative.
2. Turn the power of the insulation resistance meter
ON and measure the insulation resistance. The
duration of the applied voltage must be the period
during which 100M⍀ or more is confirmed (or
20M⍀ if the unit is equipped with a built-in
arrester).
3. Upon completion of the test, remove the insulation
resistance meter, connect a 100K⍀ resistor between
the transition wiring and the grounding terminal, and
allow the electricity to discharge. Do not touch the
terminal with your bare hands while the electricity is
discharging for more than 1 second.
2-2
IM 01C50B01-01E
2. NOTES ON HANDLING
2.6.2 Withstand voltage test procedure
Testing between the output terminal and the
input terminal
1. Lay transition wiring between the + terminal, the –
terminal, and the check terminal of the terminal box.
2. Lay transition wiring between terminals 1, 2, 3, 4
and 5 of the terminal box.
3. Connect the withstand voltage tester (with the power
turned OFF) between the transition wiring shown in
Steps 1 and 2 above.
4. After setting the current limit value of the withstand
voltage tester to 10mA, turn the power ON, and
carefully increase the impressed voltage from 0V to
the specified value.
5. The voltage at the specified value must remain for a
duration of one minute.
6. Upon completion of the test, carefully reduce the
voltage so that no voltage surge occurs.
Testing between the output terminal and the
grounding terminal
1. Lay the transition wiring between the + terminal, the
- terminal and the check terminal of the terminal
box, and connect the withstand voltage tester (with
the power turned OFF) between the transition wiring
and the grounding terminal. Connect the grounding
side of the withstand voltage tester to the grounding
terminal.
2. After setting the current limit value of the withstand
voltage tester to 10mA, turn the power ON, and
gradually increase the impressed voltage from 0V to
the specified value. .
3. The voltage at the specified value must remain for a
duration of one minute.
4. Upon completion of the test, carefully reduce the
voltage so that no voltage surge occurs.
Testing between the input terminal and the
grounding terminal
1. Lay the transition wiring across terminals 1, 2, 3, 4,
and 5 of the terminal box and connect the withstand
voltage tester (with the power turned OFF) between
the transition wiring and the grounding terminal.
Connect the grounding side of the withstand voltage
tester to the grounding terminal.
2. After setting the current limit value of the withstand
voltage tester to 10mA, turn the power ON, and
gradually increase the impressed voltage from 0V to
the specified value.
3. The voltage at the specified value must remain for a
duration of one minute.
4. Upon completion of the test, carefully reduce the
voltage so that no voltage surge occurs.
2.7 Installation of Explosion Protected T ype Transmitters
In this section, further requirements and differences
and for explosionproof type instrument are described.
For explosionproof type instrument, the description in
this chapter is prior to other description in this users
manual.
CAUTION
To preserve the safety of explosionproof equipment requires great care during mounting,
wiring, and piping. Safety requirements also
place restrictions on maintenance and repair
activities. Please read the following sections very
carefully.
2.7.1 CSA Certification
Model YTA110/CU1, YTA310/CU1 and YTA320/CU1
temperature transmitters can be selected the type of
protection (CSA Intrinsically Safe, Non-incendive, or
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.
a) CSA Intrinsically Safe Type/Non-incendive
Type
Caution for CSA Intrinsically safe type. (Following
contents refers “DOC No. ICS008-A13 P.1-1 and P.12”)
Note 1. Model YTA110/CU1, YTA310/CU1 and
YTA320/CU1 temperature transmitters
are applicable for use in hazardous
locations:
• Intrinsically Safe for Class I, II, III, Division 1,
Groups A, B, C, D, E, F & G.
• Non-incendive for Class I, II, Division 2, Groups A,
B, C, D, E, F & G, Class III, Division 1.
• Encl. “Type 4X”
• Temperature Class: T4
• Ambient temperature: –40 to 60°C
2-3
IM 01C50B01-01E
2. NOTES ON HANDLING
Note 2. Entity Parameters (Electrical/Non-
incendive field wiring parameters)
• [Supply Circuit]
Vmax = 30 V, Imax = 165 mA, Pmax = 0.9 W
Ci = 18 nF, Li = 730 µH
• [Associated apparatus]
Voc 30 V, Isc 165 mA, Pmax 0.9 W
• [Sensor Circuit]
Voc = 9 V, Isc = 40 mA, Po = 90 mW,
Ca = 1 µF, La = 10 mH
Note 3. Installation
• All wiring shall comply with Canadian Electrical
Code Part I and Local Electrical Codes.
• For the sensor circuitry, the above parameters for
sensor circuit must be taken into account.
• Dust-tight conduit seal must be used when installed in
class II and III environments.
• In any used safety barrier, output current must be
limited by a resistor 'R' such that Isc=Voc/R.
• The safety barrier must be CSA certified, and the
input voltage of the barrier must be less than
250Vrms/Vdc.
• For non-incendive type, general purpose equipment
must be CSA certified and the equipment which have
non-incendive field wiring parameters.
• The instrument modification or parts replacement by
other than authorized representative of Yokogawa
Electric Corporation is prohibited and will void
Canadian Standards Intrinsically safe and
nonincendive Certification.
[Intrinsically Safe]
Hazardous
Location
YTA Series
Temperature
Transmitter
1
2
3
Sensor
4
5
Hazardous
Location
+
Supply
–
[Non-incendive]
Nonhazardous
Location
Safety Barrier
+
+
–
–
Nonhazardous
Location
General
Purpose
Equipment
+
–
b) CSA Explosionproof Type
Caution for CSA Explosionproof type
Note 1. Model YTA110/CU1, YTA310/CU1 and
YTA320/CU1 temperature transmitters
are applicable for use in hazardous
locations:
• Explosionproof for Class I, Division 1, Groups B,
C and D.
• Dust-ignitionproof for Class II, Groups E, F and G,
Class III.
• Encl “Type 4X”
• Temperature Class: T6
• Ambient Temperature: –40 to 60°C
• Supply Voltage: 42 V dc max.
• Output Signal: 4 to 20 mA
Note 2. Wiring
• All wiring shall comply with Canadian Electrical
Code Part I and Local Electrical Codes.
• In hazardous location, wiring shall be in conduit as
shown in the figure.
WARNING: A SEAL SHALL BE INSTALLED
WITHIN 50 cm OF THE ENCLOSURE. UN SCELLEMENT DOIT
ÊTRE INSTALLÉ À MOINS DE
50 cm DU BOÎTIER.
• 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 RE-
MOVING 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.
YTA Series
Temperature
Transmitter
1
2
3
4
Sensor
5
Supply
+
–
Not Use
Safety Barrier
General
Purpose
Equipment
+
–
F0204.EPS
2-4
IM 01C50B01-01E
2. NOTES ON HANDLING
HAZARDOUS LOCATIONS DIVISION 1
50 cm Max.
Sensor
Sealing Fitting
Certified/Listed Temper ature 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.
Sensor
Certified/Listed Temper ature 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
HAZARDOUS LOCATIONS DIVISION 2
YTA Series
50 cm Max.
Conduit
Conduit
Sealing Fitting
Sealing Fitting
NON-HAZARDOUS
LOCATIONS
Non-hazardous
Location
Equipment
42 V DC Max.
4 to 20 mA DC
Signal
NON-HAZARDOUS
LOCATIONS
Non-hazardous
Location
Equipment
42 V DC Max.
4 to 20 mA DC
Signal
F0203.EPS
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
•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 µH
• [Sensor circuit]
Uo = 8.6 V Io = 30 mA
Po = 70 mW
Max. allowed external capacitance, Co = 3 µF
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.
2-5
IM 01C50B01-01E
2. NOTES ON HANDLING
s
Note 5. Special condition for safe use
• Because the enclosure of the Temperature
Transmitter is made of aluminium, if it is mounted
in an area where the use of category 1G apparatus is
required, it must be installed such, that, even in the
event of rare incidents, ignition source due to impact
and friction sparks are excluded.
[Installation Diagram]
Hazardous
Location
Transmitter
1
2
3
4
Sensor
5
*1: In any safety barriers used the output current must be limited by
a resistor “R” such that Imaxout-Uz/R.
+
Supply
–
Nonhazardou
Location
Safety Barrier
+
–
*1
F0208.EPS
b) CENELEC ATEX (KEMA) Flameproof Type
Caution for CENELEC ATEX (KEMA) Flameproof
Type
Note 1. Model YTA110/KU2, YTA310/KU2 and
YTA320/KU2 temperature transmitters for
potentially explosive atmospheres:
• No. KEMA 02ATEX2155
• Type of Protection and Marking Code: II 2G EEx d
IIC T5, T6
• Temperature Class: T5, T6
• Ambient Temperature: –40 to 80°C for T5, –40 to
75°C for T6
• Enclosure: IP67
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 strictly the “WARNING” on the label on the
transmitter.
WARNING: AFTER DE-ENERGIZING, DELAY
5 MINUTES BEFORE OPENING.
WHEN THE AMBIENT TEMP. ⭌
70⬚C, USE THE HEATRESISTING CABLES OF HIGHER THAN
90⬚C.
• Take care not to generate mechanical spark when
access to the instrument and peripheral devices in
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.
c) CENELEC ATEX Type of Protection “n”
WARNING
When using a power supply not having a nonincendive circuit, please pay attention not to
ignite in the surrounding flammable atmosphere.
In such a case, we recommend using wiring
metal conduit in order to prevent the ignition.
Caution for CENELEC ATEX Type of Protection “n”
Note 1. Model YTA110/KU2, YTA310/KU2 and
YTA320/KU2 temperature transmitters for
potentially explosive atmospheres:
• Type of Protection and Marking Code: II 3G EEx
nL IIC T5, T4
• Temperature Class: T5, T4
• Ambient Temperature: –40 to 50°C for T5, –40 to
70°C for T4
• Enclosure: IP67
Note 2. Electrical Data
[Supply circuit]
Ui = 30 V
Effective internal capacitance, Ci = 20 nF
Effective internal inductance, Li = 660 µH
[Sensor circuit]
Uo= 8.6 V Io = 30 mA Po = 70 mW
Max. allowed external capacitance, Co = 3 µF
Max. allowed external capacitance, Lo = 20 mH
Note 3. Installation
•All wiring shall comply with local installation
requirements. (refer to the installation diagram)
2-6
IM 01C50B01-01E
2. NOTES ON HANDLING
s
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
Type of Protection “n” Certification.
[Installation Diagram]
Hazardous
Location
Nonhazardou
Location
(Zone 2 only)
Temperature
Transmitter
+
Power Supply
+
Suppry
–
–
F0212.EPS
Ratings of the Power Supply are as follows:
Maximum Voltage: 30 V
(2) Electrical Connection
The type of electrical connection is stamped near
the electrical connection port according to the
following marking.
(5) Maintenance and Repair
WARNING
The instrument modification or parts replacement
by other than authorized Representative of
Yokogawa Electric Corporation is prohibited and
will void the certification.
(6) Name Plate
Name plate for type n protection
TEMPERATURE
TRANSMITTER
YTA
10.5⫺30 (42) V DC
TOKYO 180-8750 JAPAN
:Refer to USER’S MANUAL.
4⫺20 mA DC
0344
II
1G
No. KEMA 02ATEX1026 X
EEx ia IIC T5
Tamb -40 TO 50⬚C
EEx ia IIC T4
Tamb -40 TO 70⬚C
ENCLOSURE: IP67
SUPPLY INPUT
Ui=30V, Ii=165mA, Pi=900mV
Ci=20nF, Li=660H
SENSOR OUTPUT
Uo=8.6V, Io=30mA, Po=70mW
Co=3F, Lo=20mH
2GII II 3G
No. KEMA 02ATEX2155
EEx d IIC T6
Tamb -40 TO 75⬚C
EEx d IIC T5
Tamb -40 TO 80⬚C
ENCLOSURE: IP67
WARNING
AFTER DE-ENERGIZING, DELAY
5 MINUTES BEFORE OPENING.
WHEN THE AMBIENT TEMP.⭌70⬚C,
USE THE HEAT-RESISTING
CABLES⭌90⬚C.
Cross out unnecessary marking other than the selected type
of protection. When II 3G is selected, cross out 0344.
EEx nL IIC T5
Tamb -40 TO 50⬚C
EEx nL IIC T4
Tamb -40 TO 70⬚C
ENCLOSURE: IP67
SUPPLY INPUT
Ui=30V
Ci=20nF, Li=660H
SENSOR OUTPUT
Uo=8.6V, Io=30mA
Po=70mW, Co=3F
Lo=20mH
F0298.EPS
MODEL: Specified model code.
SUFFIX: Specified suffix code.
STYLE: Style code.
SUPPLY: Supply voltage.
NO.: Serial number and year of production*1.
OUTPUT: Output signal.
FACTORY CAL: Specified calibration range.
TOKYO 180-8750 JAPAN:
The manufacturer name and the
address*2.
Location of the marking
F0200.EPS
(3) Installation
WARNING
All wiring shall comply with local installation
requirement and local electrical code.
(4) Operation
WARNING
• OPEN CIRCUIT BEFORE REMOVING
COVER. INSTALL IN ACCORDANCE WITH
THIS USER’S MANUAL
• Take care not to generate mechanical sparking
when access to the instrument and peripheral
devices in hazardous locations.
*1: (a) The production year for the serial number
starting with other than “S.”
The third figure from the last shows the last one
figure of the year of production. For example, the
production year of the product engraved in “NO.”
column on the name plate as follows is 2001.
12A819857 132
The year 2001
(b) The production year for the serial number
starting with “S.”
The third and fourth figures from the left show the
last two figures of the year of production. For
example, the production year of the product
engraved in “NO.” column on the name plate as
follows is 2001.
S201D0229335
The year 2001
*2: “180-8750” is a zip code which represents the
following address.
2-9-32 Nakacho, Musashino-shi, Tokyo Japan
2-7
IM 01C50B01-01E
2. NOTES ON HANDLING
s
2.7.3 CENELEC (KEMA) Certification
Model YTA110/KU1, YTA310/KU1 and YTA320/
KU1 temperature transmitters can be selected the type
of protection (CENELEC (KEMA) Intrinsically Safe or
CENELEC (KEMA) Flameproof or IEC(KEMA) 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.
a) CENELEC (KEMA) Intrinsically Safe Type
Caution for CENELEC (KEMA) Intrinsically safe type
Note 1. Model YTA110/KU1, YTA310/KU1 and
YTA320/KU1 temperature transmitters for
potentially explosive atmospheres:
• Type of Protection and Marking code: EEx ia IIC
• Temperature Class: T4, T5
• Ambient Temperature: –40 to 70°C for T4, –40 to
50°C for T5
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:
• [Supply circuit]
Ui = 30 V Ii = 165 mA
Pi = 0.9 W
Effective internal capacitance, Ci = 20 nF
Effective internal inductance, Li = 660 µH
• [Sensor circuit]
Uo = 8.6 V Io = 30 mA
Po = 70 mW
Max. allowed external capacitance = 3 µF
Max. allowed external inductance = 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.
[Installation Diagram]
Hazardous
Location
Transmitter
1
2
3
4
Sensor
5
*1: In any safety barriers used the output current must be limited by
a resistor “R” such that Imaxout-Uz/R.
+
Supply
–
Nonhazardou
Location
Safety Barrier
+
–
*1
F0208.EPS
b) CENELEC (KEMA) Flameproof Type
Caution for CENELEC (KEMA) Flameproof Type
Note 1. Model YTA110/KU1, YTA310/KU1 and
YTA320/KU1 temperature transmitters for
potentially explosive atmospheres:
• Type of Protection and Marking Code: EEx d IIC T6
Temperature Class: T6
• Ambient Temperature: –40 to 75°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 strictly the “WARNING” on the label on the
transmitter.
WARNING: WAIT 5 MIN. AFTER POWER-
DISCONNECTION, BEFORE
OPENING THE ENCLOSURE.
WHEN THE AMBIENT TEMP. ⭌
70⬚C, USE THE HEATRESISTING CABLES OF HIGHER
THAN 90⬚C
• Take care not to generate mechanical spark when
access to the instrument and peripheral devices in
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.
2-8
IM 01C50B01-01E
2. NOTES ON HANDLING
s
c) IEC (KEMA) Type of Protection “n”
Caution for IEC (KEMA) Type of Protection “n”
Note 1. Model YTA110/KU1, YTA310/KU1 and
YTA320/KU1 ditemperature transmitters
for potentially explosive atmospheres:
• Type of Protection and Marking Code: Ex nC IIC
T5, T4
• Temperature Class: T5, T4
• Ambient Temperature: –40 to 50°C for T5, –40 to
70°C for T4
• Enclosure: IP67
Note 2. Electrical Data
Ui = 30 V Ii = 150 mA
(terminals + and –)
Note 3. Installation
•All wiring shall comply with local installation
requirements. (refer to the installation diagram)
Note 4. Operation
• Keep strictly the “WARNING” on the label on the
transmitter.
WARNING: WAIT 5 MIN. AFTER POWER-
DISCONNECTION, BEFORE
OPENING THE ENCLOSURE.
WHEN THE AMBIENT TEMP. ⭌
70⬚C, USE THE HEATRESISTING CABLES OF HIGHER
THAN 90⬚C
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 Type of Protection “n” Certification.
[Installation Diagram]
Hazardous
Location
(Zone 2 only)
Temperature
Transmitter
+
Suppry
–
Ratings of the Power Supply are as follows:
Maximum Voltage: 30 V
Maximum Current: 150 mA
Nonhazardou
Location
Power Supply
+
–
F0212.EPS
2.7.4 FM Certification
a) FM Intrinsically Safe Type
Caution for FM Intrinsically safe type.
Note 1. Model YTA /FU1 temperature transmitter
is applicable for use in hazardous
locations
• Intrinsically Safe for Class I, Division 1, Groups A,
B, C & D.
Class II, Division 1, Groups E, F & G and Class III,
Division 1 Hazardous Locations.
• Outdoor hazardous locations, NEMA 4X.
• Temperature Class: T4
• Ambient temperature: –40 to 60°C
Note 2. Entity Parameters of the temperature
transmitter:
• Supply Circuit (+ and -) •Sensor Circuit ( 1 to 5 )
Vmax : 30 V Voc/Vt : 9 V
Imax : 165 mA Isc/It : 40 mA
Pmax : 0.9 W Ca : 1 µF
Ci : 18 nF La : 10 mH
Li : 730 µH
• For the sensor input circuitry, these entity parameters
must be taken into account when installed.
• Installation Requirements between temperature
transmitter and safety barrier:
Voc Vmax, Isc Imax, Ca Ci + Ccable, La
Li + Lcable
Voc , Isc, Ca and La are parameters of the safety
barrier.
Note 3. Installation
• The safety barrier must be FM approved.
• Input voltage of the safety barrier must be less than
250 Vrms/Vdc.
•Installation should be in accordance with ANSI/ISA
RP12.6 “Installation of Intrinsically Safe Systems
for Hazardous (Classified) Locations” and the
National Electric Code (ANSI/NFPA 70).
• Intrinsically safe sensor must be FMRC Approved or
be simple apparatus (a device which will neither
generate nor store more than 1.2 V, 0.1 A, 25 mW
or 20 µJ, ex. switches, thermocouples, LED’s or
RTD’s).
• Dust-tight conduit seal must be used when installed
in a Class II and III environments.
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
Factory Mutual Intrinsically safe and Nonincendive
Approval.
2-9
IM 01C50B01-01E
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