Page 1
Technical Information
71105552
Omnigrad S -TR65
RTD thermometer EEx-d or EEx-ia certified, no replaceable insert,
process connection: threaded welded and threaded compression fitting.
PCP (4...20 mA), HART® or PROFIBUS-PA® electronics
Range of uses
The Omnigrad S TR65 is an RTD industrial thermometer,
developed for use in the fine chemicals and petrolchemical
industry but also suitable for generic industrial applications.
In compliance to EN 50014/18/20 (ATEX certification) it is
therefore particularly suitable also for hazardous areas.
When required, it’s also available with a transmitter
(PCP, HART® or PROFIBUS-PA®) into the housing.
The TR65 is available in different configurations, can also be
configured with specific dimensions and characteristics
depending on process requirements.
The installation on the plants normally needed a special process
connection: a compression fitting.
Application areas
• Fine chemicals industry
• Petrochemical industry
• Light energy industry
• General industrial services
• Environmental engineering
TI283T/02/en
Features and benefits
• Customized immersion length
• Aluminium housing, with protection grade from IP66 to IP68
• Mineral oxide insulated insert (MgO cable) diameter: 3 or 4, 5
or 6 or 8 mm
• Process connection fixed under housing or sliding and spring
loaded on the insert sheath (inox compression fitting)
• PCP, HART® and PROFIBUS-PA®, (4...20 mA
2-wire transmitters into the housing)
• The accuracy of the sensing element (Pt100) is: class A or 1/3
DIN B (IEC 60751) with electrichal connection to
2, 3 or 4 wires
• The sensing elements (Pt100) are available in wire-wound
WW (range:-200...600°C) or thin-film TF (range:-50...400°C)
with single or double Pt100 execution
• ATEX 1/2 GD EEx-ia certification
• ATEX 2 GD EEx-d certification
4 0
Page 2
Omnigrad S -TR65
Function and system design
Measuring principle The RTD (Resistance Temperature Detector), is a sensor where the electrical resistance varies with the tem
perature. The material of the RTD is Platinum (Pt) with a value of the resistance (R), referred to a nominal value
at the temperature of 0°C = 100,00 Ω (in compliance to rule IEC 60751; it is called Pt100). The very important is to define the RTD; it is defined with a standard "α" value measured between 0°C and 100°C.
This value is: α = 3.85 x 10
The temperature is measured indirectly by reading the voltage drop across the sensing resistor in the presence
of a constant current flowing through it using Ohm’s. The measuring current should be as small as possible to
minimise possible sensor selfheating; normally this current is around 1mA, no higher.
The resistance value measured for each degree is about = 0,391 Ohm/K; over 0°C it is opposite proportional
at the temperature. The standard RTD connection at the plant instrument can be to 2, 3 or 4 wires to simple
or double RTD element.
Equipment architecture The construction of the TR65 temperature sen-
housing
fixed process
connection
insert
-3
°C-1.
insert
housing
sliding process
connection
(compression fitting)
sor is based on the following standards:
•EN 50014/18 (housing)
•Neck (Fixed or sliding process connection)
•IEC 60751 (insert and sensing element).
The housing is in painted aluminium alloy; it is
suitable to contain a transmitter and/or the
ceramic block of the insert; the “Ingress Protection” is from IP66 to IP68.
The process connections of the TR65 are: compression fitting (sliding or spring loaded), fixed
process connection, threaded (M, GAS or NPT,
see the section "System components").
The inserts diameter is 3 - 4,5 - 6 - 8 mm and are
composed by MgO cable (SS 316L sheath) with
a sensing element (Pt100 ohm/0°C) positioned
at the MgO cable tip. The standard elettrical
connection is to 2, 3 or 4 wires for sensing element (Pt100).
Material & Weight
Operating conditions
Fig. 1: TR65 with the various types of process connections (fixed or fitting) and parts of the insert.
Housing Insert Process connection Weight
aluminium epoxy
coated
sheath in SS
316L/1.4404
fixed or sliding or sping loaded in
SS 316/1.4401
from 0.5 to 1.0 kg for standard
options
Performance
Operating condition or test Product type or rules Value or data of test
Ambient temperature housing (without head-mounted transmitter) -40÷130°C
housing (with head-mounted transmitter) -40÷85°C
Process temperature Sliding (e.g. TA 50) compression fitting Sleeve in SS max 400°C
Fixed process connection: same of measurement range taking care to ambient temperature (fig. 4)
Maximum Process pressure (e.g. TA 50) compression fitting Sleeve in SS 8 MPa (80 bar) at 20°C
Fixed process connection
Maximum flow velocity The highest flow velocity tolerated by the insert diminishes with increasing lengths of
the probe exposed to the stream of the fluid.
Shock and vibration resistance
test
RTD insert in according to the rule IEC
60751:
Acceleration 3 g of peak
Frequency from 10Hz to 500Hz and
back
Time of the test 10 hours
2 Endress+ Hauser
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Omnigrad S -TR65
Accuracy
RTD maximum error type TF - Range: -50 to 400°C
Cl. A 3σ = 0.15+0.0020It|
3σ = 0.30+0.0050ItI
Cl. 1/3 DIN B 3σ = 0.10+0.0017It|
3σ = 0.15+0.0020ItI
3σ = 0.15+0.0020ItI
3σ = 0.30+0.0050ItI
= -50…250°C
= +250…400°C
= 0…100°C
= -50...0
= 100...250°C
= 250…400°C
DIN-IEC-EN 60751
2,0
Class B (°C)
1,5
1,0
Class A (°C)
Tolerance
0,5
-200 -100 0 100 200 300 400 500 600°C
Class 1/3 DIN B (°C)
±3σ = range including 99.7% of the readings. (|t|= absolute value of the temperature in °C).
RTD maximum error type WW - Range: -200 to 600°C
Cl. A 3σ = 0.15+0.0020It| = -200…600°C
Cl. 1/3 DIN B 3σ = 0.10+0.0017It|
3σ = 0.15+0.0020ItI
3σ = 0.15+0.0020ItI
= -50...250°C
= -200...-50
= 250…600°C
-200 -100 0 100 200 300 400 500 600°C
2,0
1,5
1,0
Tolerance
0,5
DIN-IEC-EN 60751
Class A (°C)
Class 1/3 DIN B (°C)
±3σ = range including 99.7% of the readings. (|t|= absolute value of the temperature in °C).
Others errors
Transmitter maximum error See the corresponding documentation (codes at the end of the document)
Display maximum error 0.1% FSR + 1 digit (FSR = Full Scale Range)
The “4 wires” configuration, is provided as a standard connection for the single Pt 100’s excludes additional
errors in every condition.
Generally in the “4 wires” configuration there is a higher guarantee of accurancy.
Response time Tests, with the RTD insert, in water at 0.4 m/s (according to IEC 60751); from 23 to 33°C:
Insulation
Stem diameter of the insert Sensing element type Time for 50% or 90% of
temperature step
6 mm TF / WW t
3 mm TF / WW t
50
t
90
50
t
90
Measurement Insulation type Result
Insulation resistance between terminals and probe sheath above 100 MΩ at 25°C
According to IEC 60751, test voltage 250 V above 10 MΩ at 300°C
Response time
3,5 s
8,0 s
2,0 s
5,0 s
Self heating Negligible when the E+H iTEMP® transmitters are employed.
Endress+Hauser 3
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Omnigrad S -TR65
Installation
The Omnigrad S TR65 thermometers can be mounted on pipes, vessels or other plant parts that may be necessary, by means of compression junctions or thermowells.
The absence of the extension neck (situated between the process connection and the head) may expose the
housing to overheating. To ensure that the head temperature has not to exceed the limit values defined in paragraph "System components" (refer to fig. 4).
In the case of ATEX certified components (transmitter, insert), please refer to the relevant documentation (refer
to the code at the end of this document).
Immersion depth may have an effect on the accuracy of the measurement. If the immersion is too low, an error
may be generated in the temperature recorded due to the lower temperature of the process fluid near to the
walls and heat transfer, which takes place through the sensor stem.
The incidence of such an error can be not negligible if there is a big difference between the process temperature
and the ambient temperature (refer to fig. 2). To avoid measurement errors of this kind, it is advisable to set an
immersion length (L) of at least 50÷70 mm (without thermowell).
In pipes of a small section the axis line of the duct must be reached and if possible slightly exceeded by the tip
of the probe (refer to fig. 2A-2B). Insulation of the outer part of the pipe reduces the effect produced by a low
immersion of the sensor. Another solution may be a tilted installation (see fig.2C-2D). For a best installation,
in the industries, it's better to follow the rule: h ( d, L > D/2 + h.
B
C
D
B
welded coupling
THERMAL
INSULATING
hd
»
L> D/2+h
Fig. 2: Installation examples
d
d
h
L
METALLIC SHEATH
A
ØD
In the case of two-phase flows, pay special attention to the choice of measurement point, as there may be fluctuations in the value of the detected temperature.
With regard to corrosion, the base material of the wetted parts in contact with the fluid (SS 316L/1.4404, compression fitting in SS 316/1.4401 or SS 316L/1.4404 and several types of sleeves) can tollerate the common
corrosive media up to even the highest temperatures. For further information on specific applications, please
contact the E+H Customer Service Department.
In the case that the sensor components are disassembled, in the following reassembly procedure the definite
torques must be employed.
In the case of vibrations the thin film sensing element (TF) may offer advantages, but the behaviour depends
on the intensity, the direction and the dominating frequency in the vibration mode.
The wire wound Pt 100 (WW), besides having a larger measurement and accuracy range, guarantees greater
long term stability.
4 Endress+ Hauser
Page 5
Omnigrad S -TR65
System components
Housing The protection housing, our "TA21H", commonly referred to the “connection head”, is used to contain and
protect the terminal block or the transmitter and to join the electric connections to the mechanical component.
The TA21H used for the TR65 is compliant
with EN 50014/18 and EN 50281-1-1, EN
½ NPT, NPT
Ø90
64
Fig. 3: Housing TA21H
¾
G ½", M20x1.5
39
ø38
ø72
Extension neck The extension is inserted between the housing
30
°C
25
20
15
10
Head heating
5
0
100 125 150 175 20075
Neck extension length
Fig. 4: Heating of the head caused by the process temperature
Process temperature
225 250
570°C
400°C
220°C
mm
50281-1-2 standards (EEx-d certification for
explosion proof type of protection).
The matching of the head with the extension
below the head and the cover (threaded)
ensures a degree of protection from IP66 to
115
~
IP68. The head also has a chain to connect the
body to the cover, which facilitates the use of
the instrument during the maintenance on systems. The single or double threaded electrical
cable entry can be: M20x1.5, 1/2” NPT or
3/4” NPT, G1/2".
and the thermowell or the plant connection,
this part is called neck.
In the TR65 the extension neck, is defined by
the fixed, sliding or spring loaded process connection.
As illustrated by the drawing (fig. 4), the length
of the extension neck may influence the temperature in the head.
It is necessary that this temperature is kept
within the limit values defined in the paragraph
“Operating Conditions”.
Before choosing the connection, it is better to
verify this graphic and therefore to choose a
suitable extension to avoid the heating of the
head.
Process connection Standard process connection available in the following types:
Type Model ThreadedPCL
mmC mm
A1 Fixed 3/4" NPT 42 15
A2 Fixed 1/2” NPT 42 8
B1 Comp.
fitting
B2 Spring
1/2” NPT
3/4" NPT555588
1/2” NPT 55 8
loaded
B3 Spring
loaded
1/2” NPT
3/4" NPT
105
12088
½"NPT
42
ML
PC PC PC PC PC
½"NPT
L
C
ML
A1
A2
L
C
B1 B2
L
C
C
B3
Endress+Hauser 5
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Omnigrad S -TR65
1
-
+
-
+
1
Electronic head transmitter The required type of output signal can be obtained by choosing the correct head mounted transmitter.
Endress+Hauser supplies “state-of-the-art” transmitters (the iTEMP® series) built in 2-wire technology and
with 4…20 mA output signal, HART® or PROFIBUS-PA®. All of the transmitters can be easily programmed
using a PC:
Head transmitter Communication software
PCP TMT181 ReadWin® 2000
® TMT182 ReadWin® 2000, FieldCare, Hand held module DXR275, DXR375
HART
PROFIBUS PA® TMT184 FieldCare
In the case of PROFIBUS-PA® transmitters, E+H recommends the use of PROFIBUS® dedicated connectors.
The Weidmüller type is provided as a standard option. For detailed information about transmitters, please refer
to the relevant documentation (refer to TI codes at the end of the document). If a head-mounted transmitter
is not employed, the sensor probe may be connected through the terminal block to a remote converter (i.e.
DIN rail transmitter). The customer may specify the configuration desired during the order phase. The head-
mounted transmitters available are:
Description Dwg
TMT180 and TMT181:PCP 4…20 mA. The TMT180
and the TMT181 are PC programmable transmitters. The
TMT180 is also available in a version with enhanced
accuracy (0.1°C vs. 0.2°C) in the temperature range 50…250°C and in a version with a fixed measurement
range (specified by the customer in the order phase).
The TMT182 output consists of 4…20 mA and HART®
superimposed signals. TMT182: Smart HART®.
Ø33
2
Ø 6.5
6
5
Ø 4.5
Ø44
3
4
22.5
Ø44
Ø33
TMT184: PROFIBUS-PA®.
For the TMT184, with PROFIBUS-PA® output signal,
the communication address may be set via software or via
mechanical dip-switch.
Ø33
+
2
1
6
-
Ø6.5
8
+
-
5
Ø 4.5
Ø44
3
4
26.8
Ø44
Ø33
Probe On TR65 the measurement probe is constituted by a not replaceable mineral insulated insert (MgO) with a
sheath in AISI316L.
The immersion length (ML) is available in the most commonly used dimensions and customized special dimensions. They can be personalized by the client within a range of values (refer to “Sales Structure” at the end of
the document).
The length of the sensor can be chosen within a standard range from 50 to 5000 mm.
Sensors with a length above 5000 mm can also be ordered and supplied after a technical analysis of the application (max length 30.000 mm).
Although the wiring diagram of single Pt 100 is always supplied with 4 wires configuration, the connection of
a transmitter is executed with 3 wires as well, by avoiding to connect whichever of the terminals (see fig. 5).
6 Endress+ Hauser
Page 7
Omnigrad S -TR65
-
The configuration Pt100 double with 2 wires is only available for the ATEX certified inserts.
ELECTRICAL DIAGRAM ON TERMINAL BLOCK
2 x Pt 100
white
red
red
3 wires
black
white
black
red
yellow
2 x Pt 100 1 x Pt 100
2 wires
black
yellow
4 wires
... WITH TERMINAL BLOCK
white
red
white
red
Ω
red
white
red
white
Ø42
Ø33
... WITH TRANSMITTER
1
6
5
+
2
3
4
Ø44
-
Ø33
mA
41
fitting
compression
springload
8
42
½”NPT
22
compression fitting
90/180
22
TA50-xxxx
½”NPT
90/180
½”NPT
42
8
½”NPT
ML
ML
55
55
ML
ML
105/120
¾
½”NPT
ØD
Fig. 5: Functional components and stand ard electrical diagrams with ceramic terminal block and transmitter.
ØD
Type A
½”- ”NPT
Type B
¾
½”- ”NPT
Type C
ØD
ØD
The use of a TR65 with standard lengths ensures fast delivery times; this allows our customers to reduce the
amount of spare parts to be kept on stock.
Certificates & approvals
Ex approval • ATEX Certificate CESI 05ATEX038 for explosion proof type of protection: ATEX II 2 GD EEx-d IIC T6..T5
T85°...T100°C. The TR65 is 4 marked.
• ATEX Certificate KEMA 01ATEX1169 X for intrinsecaly safe type of protection: 1GD or 1/2 GD EEx-ia IIC
T6...T1 T85...450°C. The TR65 is 4 marked.
With regards to the NAMUR NE 24 certificate and the Manufacturer’s Declaration according to the standard
EN 50018, EN 50020, EN 50281-1-1, EN 50281-1-2, E+H Customer Service will be able to provide further
detailed information.
PED approval The Pressure Equipment Directive (97/23/CE) is respected. As paragraph 2.1 of article 1 is not applicable to
these types of instruments. The 4 mark according to PED Directive is not requested.
Material certification The material certificate EN 10204 3.1 can be directly selected from the sale structure of the product and refers
to the parts of the sensor in contact with the process fluid. Other types of certificates related to materials can
be requested separately.
The “short form” certificate includes a semplified declaration with no enclosures of documents related to the
materials used in the construction of the single sensor and guarantees the traceability of the materials through
the identification number of the thermometer.
The data related to the origin of the materials can subsequently be requested by the client if necessary.
Further details
Maintenance The Omnigrad S TR65 thermometers do not require any specific maintenance.
In the case of ATEX certified components (transmitter, insert) please refer to the corresponding specific relevant
documentation (at the end of the document).
Endress+Hauser 7
Page 8
Ordering information
Omnigrad S -TR65
Sales structure
TR65- Omnigrad S TR65 RTD thermometer
Thermometer complete EE-d or EEx-ia certified, without replaceabble insert. Housing: IP66 / IP68, material: aluminium
epoxy coating. Execution for direct contact with a process connection welded at the insert or sliding on the insert sheath.
Operating and measurement ranges: from -50 to 400°C (with TF); -200 to 600°C (with WW)
Approval
Non-hazardous area
A
*ATEX II 1/2 GD EEx ia IIC
C
*ATEX II 2 GD EEx d IIC
E
Head, material, IP grade
TA21H, Aluminium epoxy coating, , IP66 / IP68
A
Special version, to be specified
Y
Cable entry
1 x 1/2 NPT
A
2 x 1/2 NPT
B
1 x 3/4 NPT
C
2 x 3/4 NPT
D
1 x M20 x1,5
E
2 x M20 x1,5
F
Special version, to be specified
Y
Process connection
Not needed
AA
Thread 1/2" NPT - M, SS 316
11
Thread 3/4" NPT - M, SS 316
12
Compression fitting, 1/2" NPT - M, 55 mm, springloaded
21
Compression fitting, 1/2" NPT - M, 105 mm, springloaded
31
Compression fitting, 3/4" NPT - M, 120 mm, springloaded
32
Compression fitting TA50, 1/2" NPT - M, sliding
41
Compression fitting TA50, 3/4" NPT - M, sliding
42
Special version, to be specified
99
Insertion length ML
... mm
X
Special version, to be specified
Y
Insert diameter
3.0 mm
1
6.0 mm
3
Special version, to be specified
9
Tip Shape
1
2
9
Standard
Conical to 120°
Special version, to be specified
Immersion length L
...mm
X
Special version, to be specified
Y
Head transmitter; Range
Flying leads
F
Terminal block
C
TMT180-A21 fix; 0.2K, from..to..°C, span limit -200/650°C
2
TMT180-A22 fix; 0.1K, from..to..°C, span limit -50/250°C
3
TMT180-A11 prog.; 0.2K, from..to..°C, span limit -200/650°C
4
TMT180-A12 prog.; 0.1K, from..to..°C, span limit -50/250°C
5
TMT181-A, PCP, from...to...°C, 2-wire, isolated
P
TMT181-B, PCP ATEX, from...to...°C, 2-wire, isolated
Q
TMT182-A, HART, from...to...°C, 2-wire, isolated
R
TMT182-B, HART ATEX, from...to...°C, 2-wire, isolated
T
TMT184-A, Profibus PA, from...to...°C, 2-wire, isolated
S
TMT184-A, Profibus PA ATEX, from...to...°C, 2-wire, isolated
V
THT1 separate item
1
8 Endress+ Hauser
Page 9
Omnigrad S -TR65
RTD Class; Wiring
1 x Pt100 TF, cl. A, range: -50/400°C; 4-wire
3
1 x Pt100 TF, cl. 1/3 DIN B, range: -50/400°C; 4-wire
7
2 x Pt100 WW, cl. A, range: -200/600°C; 3-wire
B
1 x Pt100 WW, cl. A, range: -200/600°C; 4-wire
C
2 x Pt100 WW, cl. A, range: -200/600°C; 2-wire
D
2 x Pt100 WW, cl. 1/3 DIN B, range: -200/600°C; 3-wire
F
1 x Pt100 WW, cl. 1/3 DIN B, range: -200/600°C; 4-wire
G
Special version, to be specified
Y
Additional options
Not needed
0
Special version, to be specified
Y
TR65- ⇐ Order code (complete)
Sales structure
THT1 Model and version of the head transmitter
TMT180-A11 programmable from...to...°C, accuracy 0.2 K, span limit -200...650°C
A11
TMT180-A12 programmable from...to...°C, accuracy 0.1 K, span limit -50...250°C
A12
TMT180-A21AA fixed range, accuracy 0.2 K, span 0...50°C
A13
TMT180-A21AB fixed range, accuracy 0.2 K, span 0...100°C
A14
TMT180-A21AC fixed range, accuracy 0.2 K, span 0...150°C
A15
TMT180-A21AD fixed range, accuracy 0.2 K, span 0...250°C
A16
TMT180-A22AA fixed range, accuracy 0.1 K, span 0...50°C
A17
TMT180-A22AB fixed range, accuracy 0.1 K, span 0...100°C
A18
TMT180-A22AC fixed range, accuracy 0.1 K, span 0...150°C
A19
TMT180-A22AD fixed range, accuracy 0.1 K, span 0...250°C
A20
TMT180-A21 fixed range, accuracy 0.2 K, span limit -200...650°C, from...to...°C
A21
TMT180-A22 fixed range, accuracy 0.1 K, span limit -50...250°C, from...to...°C
A22
TMT181-A PCP, 2-wire, isolated, programmable from...to...°C
F11
TMT181-B PCP ATEX, 2-wire, isolated, programmable from...to...°C
F21
TMT181-C PCP FM IS, 2-wire, isolated, programmable from...to...°C
F22
TMT181-D PCP CSA, 2-wire, isolated, programmable from...to...°C
F23
TMT181-E PCP ATEX II3D, 2-wire, isolated, programmable from...to...°C
F24
TMT181-F PCP ATEX II3D, 2-wire, isolated, programmable from...to...°C
F25
TMT182-A HART®, 2-wire, isolated, programmable from...to...°C
L11
TMT182-B HART® ATEX, 2-wire, isolated, programmable from...to...°C
L21
TMT182-C HART® FM IS, 2-wire, isolated, programmable from...to...°C
L22
TMT182-D HART® CSA, 2-wire, isolated, programmable from...to...°C
L23
TMT182-E HART® ATEX II3D, 2-wire, isolated, programmable from...to...°C
L24
TMT182-F HART® ATEX II3D, 2-wire, isolated, programmable from...to...°C
L25
TMT184-A PROFIBUS-PA®, 2-wire, programmable from...to...°C
K11
TMT184-B PROFIBUS-PA® ATEX, 2-wire, programmable from...to...°C
K21
TMT184-C PROFIBUS-PA® FM IS, 2-wire, programmable from...to...°C
K22
TMT184-D PROFIBUS-PA® CSA, 2-wire, programmable from...to...°C
K23
TMT184-E PROFIBUS-PA® CSA, 2-wire, programmable from...to...°C
K24
TMT184-F PROFIBUS-PA® ATEX II3D, 2-wire, isolated, programmable from...to...°C
K25
Special transmitter
YYY
Application and services
Assembled into position
1
Special version
9
THT1- ⇐ Order code (complete)
Endress+Hauser 9
Page 10
Supplementary documentation
71105552
Brochure Field of activities - Temperature measurement FA006T/09/en
Temperature head transmitter iTEMP® PT -TMT180 TI 088R/09/en
Temperature head transmitter iTEMP® PCP -TMT181 TI 070R/09/en
Temperature head transmitter iTEMP® HART® -TMT182 TI 078R/09/en
Temperature head transmitter iTEMP® PROFIBUS-PA® -TMT184 TI 079R/09/en
TA fittings & sockets Omnigrad TA50, TA55, TA60, TA70, TA75 TI 091T/02/en
RTD insert for temperature sensors - Omniset TPR 100 TI 268T/02/en
RTD insert for temperature sensors - Omniset TPR 300 TI 290T/02/en
Safety instructions for use in hazardous areas (TPR 100) XA 003T/02/z1
Industrial thermometers, RTD and thermocouples TI 236T/02/en
Safety instructions for use in hazardous areas (TPR 300 to be released) XA 015T/02/z1
International Head Quarter
Endress+Hauser
GmbH+Co. KG
Instruments International
Colmarer Str. 6
79576 Weil am Rhein
Germany
Tel. +49 76 21 9 75 02
Fax +49 76 21 9 75 34 5
www.endress.com
info@ii.endress.com
TI283T/02/en/07.05
FM+SGML6.0
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