Page 1
Technical Information
71105561
Omnigrad S -TC65
Thermocouple thermometer EEx-d certified, no replaceable insert, no
thermowell, process connection threaded fixed or compression fitting
PCP (4...20 mA), HART® or PROFIBUS-PA® electronics
Range of uses
The Omnigrad S TC65 is an industrial thermometer (thermocouple TC: K or J), developed for use in the fine chemicals and
petrochemical 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 TC65 is available in different configurations and characteristics depending on process requirements.
The installation on the plants normally needed a special process
connection as a spring compression fitting.
Application areas
• Fine chemicals industry
• Petrochemical industry
• Light energy industry
• General industrial services
• Environmental engineering
TI288T/02/en
Features and benefits
• Customized immersion length
• Aluminium housing, with protection grade from IP66 to IP68
• Thermocouple with hot junction grounded or ungrounded in
mineral oxide cable (MgO cable) diameter: 3 or 6 mm
• Process connection welded or sliding/spring compression
fitting or std compression fitting
• PCP, HART® and PROFIBUS-PA®,
(4...20 mA 2-wire transmitters)
• The accuracy of the thermocouple TC (K (NiCr-Ni) and
J (Fe-CuNi)) are: Cl. 1 - 2 (EN 60584) or Cl. Special - Standard
(ANSI MC96.1)
• The thermocouple TC (K or J) are available in single or double
element
• ATEX II 2 GD EEx-d IIC certification
• ATEX II 1/2 GD EEx d IIC certification
4 0
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Omnigrad S -TC65
Function and system design
Measuring principle The thermocouple (TC) thermometer’s sensing element consists of two metal wires that are homogeneous but
different one from the other and insulated along their entire length. The two wires are welded together at one
end, known as the “measurement or hot junction”. The other end, where the wires are free, is known as the
“cold or reference junction” and is connected to a electromotive force measurement circuit where the force is
generated by the different thermoelectric power of each of the thermocouple’s wires if there is a temperature
difference between the hot joint (T1) and the cold joint (Seebeck effect). The cold junction has to be “compensated” with reference to the temperature of 0°C (T0). The function that links the electromotive force to the
temperatures T1 and T0 is a curve whose characteristics depend on the materials used in the construction of
the thermocouple. Some thermocouples curves, and particularly those most reliable for the purposes of industrial readings, are those compliant with standards EN 60584 and ANSI MC96.1.
Equipment architecture The construction of the TC65 temperature sensor is
housing
fixed process
connection
insert
Fig. 1: TC65 with the various types of process connections (fixed or fitting) and parts of the insert.
insert
housing
sliding process
connection
(compression fitting)
based on the following standards:
•EN 50014/18 (housing)
•Neck (Fixed or sliding process connection)
•EN 60584 (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 TC65 are: compression fitting (sliding or spring loaded), fixed process
connection threaded (M, GAS or NPT, see the section "System components").
The hot junction of the thermocouple (type K or J)
are positioned close to the tip of the probe. The
thermocouple is available in two versions:
grounded or ungrounded hot junction. The electrical structure of the thermocouple always complies
with EN 60584/61515 or ANSI MC96.1/ASTM
E585 standard rules.
Material & Weight
Operating conditions
Housing Insert Process connection Weight
aluminium epoxy
coated
sheath in:
SS 316L/1.4404
Inconel® 600/2.4816
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 It is restricted by the material
sheath: insert or thermowell
Process pressure (Maximum) The pressure values can be subjected at the various temperatures.
Maximum flow velocity The highest flow velocity, (of the stream or of the fluid), tolerated, diminishes with
Shock and vibration resistance
test
Example: for 9 mm diameter pipes, with a limited flow velocity, the
maximum tolerated pressures are the following:
increasing lengths of the thermowell/probe exposed.
Insert in according to the rule
IEC 60751:
< 600°C SS 316L/1.4404
< 800°C SS 316Ti/1.4571
< 1100°C Hast.® C276/2.4819 -
Inc.600®/2.4816
50 bar to 20°C
33 bar to 250°C
24 bar to 400°C
Acceleration 3 g of peak
Frequency from 10Hz to 500Hz and back
Time of the
test
10 hours
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Omnigrad S -TC65
Accuracy
Thermocouple
and range °C
J (Fe-CuNi)
-40° ... 750°C
K (NiCr-Ni)
-40 ... 1200°C
Thermocouple
and range °C
J (Fe-CuNi)
0 ...750°C
K (NiCr-Ni)
0...1250°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)
Class Max deviation Class Max deviation Cable colours
2 +/-2.5°C (-40...333°C)
+/-0.0075 |t| (333...750°C)
2 +/-2.5°C (-40...333°C)
+/-0.0075 |t| (333...1200°C)
ItI = absolute temperature value in °C
Class Max deviation Class Max deviation Cable colours
Stand-
ard
Stand-
ard
+/-2.2°C (0...293°C)
+/-0.75%o(293...750°C)
+/-2.2°C (0...293°C)
+/-0.75%o(293...1250°C)
ItI = absolute temperature value in °C
EN 60584
1 +/-1.5°C (-40...375°C)
+/-0.004 |t| (375...750°C)
1 +/-1.5°C (-40...375°C)
+/-0.004 |t| (375...1000°C)
ANSI MC96.1
Special +/-1.1°C (0...275°C)
+/-0.4%o(275...750°C)
Special +/-1.1°C (0...275°C)
+/-0.4%o(275...1250°C)
Response time Tests, with the TC insert, in water at 0.4 m/s (according to IEC 60751) from 23 to 33°C:
Stem diameter of the insert Sensing element type Temperature of test Response time
Insulation
SS 316 - d. 6 mm K (NiCr-Ni) or J (Fe-CuNi) t
Measurement Insulation type Result
Insulation resistance between terminals and probe sheath
according to EN 60584, test voltage 500 V
50
t
90
> 1GΩ at 25°C
> 5 MΩ at 500°C
2,5 s
7,0 s
+ black
- white
+ green
- white
+ black
- red
+ yellow
- red
Self heating Negligible when the E+H iTEMP® transmitters are employed.
Installation
The Omnigrad S TC65 thermometer 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. 3).
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. 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.
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Omnigrad S -TC65
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 or ,
compression fitting in SS 316/1.4401or Inconel® 600/2.4816 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.
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 TC65 is compliant
with EN 50014/18 and EN 50281-1-1, EN
½ NPT, NPT
64
Fig. 3: Housing TA21H
Ø90
¾
G ½", M20x1.5
39
ø38
ø72
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".
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Omnigrad S -TC65
1
-
+
-
+
Extension neck The extension length, inserted between the
30
°C
25
20
15
Process temperature
housing and the thermowell or the plant connection, is called: neck.
In the TC65 the extension length of the neck,
is defined by the process connection: fixed,
sliding or spring loaded compression fitting.
As illustrated by the drawing (fig. 4), the
length of the extension neck may influence
the temperature in the head.
10
Head heating
5
0
100 125 150 175 20075
Neck extension length
Fig. 4: Heating of the head caused by the process temperature
225 250
570°C
400°C
220°C
mm
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
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
HART
® TMT182 ReadWin® 2000, FieldCare, Hand held module DXR275, DXR375
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 headmounted transmitters available are:
Description Dwg
TMT181: PCP 4…20 mA.
The TMT181 is a PC programmable transmitters
TMT182: Smart HART®.
The TMT182 output consists of 4…20 mA and HART®
superimposed signals.
Ø33
2
Ø 6.5
6
5
Ø 4.5
Ø44
3
4
22.5
Ø44
Ø33
C
B3
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Omnigrad S -TC65
1
+
-
+
-
+
-
-
+
-
Description Dwg
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
-
Ø 6.5
8
+
-
5
Ø 4.5
Ø44
3
4
26.8
Ø44
Ø33
Probe On TC65 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).
The electrical connection for ever thermocouple it is to 2 wires. ( see the following fig. 5)
ML
ELECTRICAL DIAGRAM ON TERMINAL BLOCK
2xTC
2°TC1°TC
2 wires
1xTC
1°TC
2 wires
41
fitting
compression
8
42
22
springload
½”NPT
ML
55
55
compression fitting
TA50-xxxx
...WITH
TERMINAL
BLOCK
1°TC
90/180
22
ML
... WITH
TRANSMITTER
6
5
½”NPT
+
1
-
2
mA
3
4
90/180
½”NPT
42
8
½”NPT
ML
105/120
ØD
¾
½”NPT
ØD
Type A
Fig. 5: Functional components and stand ard electrical diagrams with ceramic terminal block and transmitter.
½”- ”NPT
Type B
¾
½”- ”NPT
Type C
ØD
ØD
The use of a TC65 with standard lengths ensures fast delivery times; this allows our customers to reduce the
amount of spare parts to be kept on stock.
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Omnigrad S -TC65
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, and ATEX II 1/2 GD EEx-d IIC T6..T5 T85°...T100°C. The TC65 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 TC65 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
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Ordering information
Omnigrad S -TC65
Sales structure
TC65- Omnigrad S TC65 thermocouple thermometer
Thermocouple thermometer complete EE-d 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.
Two operating and measurement ranges: from -40 to 750°C (with TC J); -40 to 1200°C (with TC K)
Approval
Non-hazardous area
A
*ATEX II 1/2 GD EEx d IIC
M
*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
Standard
1
Conical to 120°
2
Special version, to be specified
9
Head transmitter; Range
Flying leads
F
Terminal block
C
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-B, Profibus PA® ATEX, from...to...°C, 2-wire, isolated
V
THT1 separate item
1
TC Accuracy; Material;
1x type K Cl. 1 special; Inconel®600
A
2x type K Cl. 1 special; Inconel®600
B
1x type J Cl. 1 special; SS 316L
E
2x type J Cl. 1 special; SS 316L
F
Special version, to be specified
Y
8 Endress+ Hauser
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TC standard; Hot junction;
EN 60584; ungrounded
1
EN 60584; grounded
2
ANSI MC96.1; ungrounded
3
ANSI MC96.1; grounded
4
Special version, to be specified
9
Additional options
Not needed
A
Y Special version, to be specified
TC65- ⇐ Order code (complete)
Omnigrad S -TC65
Sales structure
THT1 Model and version of the head transmitter
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
71105561
Brochure Field of activities - Temperature measurement FA006T/09/en
Temperature head transmitter iTEMP® PCP TMT181 TI070R/09/en
Temperature head transmitter iTEMP® HART® TMT182 TI078R/09/en
Temperature head transmitter iTEMP® PA TMT184 TI079R/09/en
TC insert for temperature sensors - Omniset TPC100 TI278T/02/en
TC insert for temperature sensors - Omniset TPC300 (to be released) TI291T/02/en
Safety instructions for use in hazardous areas (TPC300, to be released) XA017T/02/en
TA fittings & sockets Omnigrad TA50, TA55, TA60, TA70, TA75 TI091T/02/en
TC thermometers Omnigrad TSC - General information TI090T/02/en
Industrial thermometers, RTD and thermocouples TI236T/02/en
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
TI288T/02/en/07.05
FM+SGML6.0
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