Page 1
Technical Information
Omnigrad S -TR62
RTD thermometer EEx-d or EEx-ia certified, replaceable inset , complete
of niple and union to thermowell connection
PCP (4...20 mA), HART® or PROFIBUS-PA® electronics
Range of uses
The Omnigrad S TR62 is an RTD industrial thermometer,
developed for heavy duty and/or generic industrial applications.
In compliance to EN 50014/18 (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 TR62 is available in several standard versions and different
configurations, can also be configured with specific dimensions
and characteristics depending on process requirements.
The installation on the plants, require separately order of the
thermowell (form pipe or from bar-stock).
Application areas
• Chemicals industry
• Energy industry
• Gas Processing industry
• Petrochemical industry
• General industrial services
Features and benefits
• Customized immersion length
• Aluminium housing, with protection grade from IP66 / IP 68
• PCP, HART® and PROFIBUS-PA®, (4...20 mA 2-wire transmitters)
• Thermoresistance insert insulated with mineral oxide cable
(MgO cable) diameter: 3 or 6 mm
• Pt100 sensing element with accuracy in class A or 1/3 DIN B
(IEC 60751)
• The Pt100 available are: wire-wound WW (-200...600°C) or
thin-film TF (-50...400°C)
• Single or double Pt100 to 2,3 or 4 wires connection
• ATEX II 1/2 GD EEx-ia IIC certification
• ATEX II 2 G EEx-d IIC certification
4 0
TI281T/02/en
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Omnigrad S -TR62
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 DIN 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 Omnigrad S TR62 temperature sensor is based on the following standards:
• EN 50014/18 (assembly)
• Neck (ASME style: nipple and 3 elements coupling)
• IEC 60751 (insert).
-3
°C-1.
The housing is in painted aluminium
alloy; it is suitable to contain a transmitter and/or the ceramic block of the
inset; the “Ingress Protection” is: IP66
to IP68.
The neck is composed by one or two
nipples and 3 elements coupling. It is
the extension between the head and
the thermowell.
The replaceable insert 3 or 6 mm diameter, is composed by MgO cable (SS
316L sheath) with a sensing element
(Pt100 ohm/0°C) positioned at the
MgO cable tip.
The standard electrical connection is to
2, 3 or 4 wires for sensing element
(Pt100).
Material & Weight
Operating conditions
Fig. 1: TR62 with the various types of thermowell connections and end parts of the probe
Housing Insert Extension neck Weight
aluminium epoxy
coated
sheath in SS 316L/1.4404 SS 316/1.4401 or ASTM
A105
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
Shock and vibration resistance
test
RTD Inset 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
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Omnigrad S -TR62
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, 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 step changes:
Insulation
Stem diameter of the insert Pt100 type t
6 mm TF / WW t
3 mm TF / WW t
(x)
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.
Installation
The Omnigrad S TR62 thermometers can be installed on pipes or tanks by means of threaded or flanged thermowell connections. The immersion length must take into account all the parameters of the thermometer and
the process to measure. 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 prevent measuring errors of this kind, it is advisable to use thermometer with a small diameter on well and
an immersion length (L) of at least 80÷100 mm.
In small section ducts the tubing’s axis must be reached and preferibly slightly exceeded by the tip of the probe
(see fig. 2A-2C).
Insulation of the outer part of the sensor reduces the effect produced by a low immersion. Alternatively, it is
also possible to adopt a tilted installation (see fig. 2B-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 -TR62
h ≈ d
L > D/2+h
B
Ød
C
D
h
L
ØD
A
welded coupling
L
THERMAL
INSULATING
PIPE METALLIC SHEATH
Fig. 2: Installation examples
With regard to corrosion, the base material of the wetted parts (SS 316L, SS 316Ti, Hastelloy C) can tolerate
the common corrosive media right 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. This will assure the housings with the IP grade defined.
In the case of vibrations the thin film sensing element Pt100 (TF) may offer advantages; the wire wound Pt100
(WW), besides having a larger measurement and accuracy range, guarantees greater long term stability.
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 TR66 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".
4 Endress+ Hauser
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Omnigrad S -TR62
1
-
+
-
+
Extension neck A special extension is inserted between the housing and the thermowell connection, this part is called: neck.
The neck is constituted by a tube assembled to hydraulic hardware (nipples or joints) that is suitable to allow
the adjustment of the sensor to the thermowell. In addition to the standard versions listed below, it is also possible to order the extension neck by specifying the desired length (see “Sales structure” chart at the end of this
document). In the TR62 the standard lengths (N) and the versions of the extension neck can be selected among
the following options:
Type Material Length
N (mm)
N 316/A105 77 1/2" NPT M 8 (male) A
N 316/A105 117 1/2" NPT M 8 (male) A
NU 316/A105 104 1/2" NPT F 8 (female) B
NUN 316/A105 156 1/2" NPT M 8 (male) C
Thread C
(mm)
Neck
draw
N
C
A
N
C
B
N
C
C
As illustrated by the drawing in fig. 5, the length of the
30
°C
25
20
15
10
Head heating
5
0
100 125 150 175 20075
Neck extension length
Process temperature
225 250
570°C
400°C
220°C
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.
mm
Fig. 4:Heating of the head caused by the process temperature
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
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Omnigrad S -TR62
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 The measuring probe (generally Pt 100) of sensor TR62 consists of a 3 or 6 mm diameter thermometric insert
(TPR100 for general purpose and intrinsecally safe model, or TPR300 for explosion-proof model) whose stem
is made in compressed MgO with SS 316L sheath.
To improve heat transmission, the insert tip is pushed, by means of a spring system, to the inside bottom of the
thermowell (to order separately).
The length of the sensor can be chosen within a 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 immersion length (ML) must be calculated according to the total length of the thermowell (A) and the type
of thermowell used. Also if spare part inserts are necessary, consult the table below (applicable to standard
thickness well bottoms).
General purpose or ATEX certified assembly
Insert Ø, ..mm N , tp. N, mm N, material N, thread IL, (mm)
TPR100 / TPR300 3 or 6 N 77 SS 316/A105 1/2"NPT M IL = ML + 77 + 33
TPR100 / TPR300 3 or 6 N 117 SS 316/A105 1/2"NPT M IL = ML + 117 + 33
TPR100 / TPR300 3 or 6 NU 104 SS 316/A105 1/2"NPT F IL = ML + 104 + 33
TPR100 / TPR300 3 or 6 NUN 156 SS 316/A105 1/2"NPT M IL = ML + 156 + 33
Although the wiring diagram of single Pt100s is always supplied with 4 wires configuration, the connection of
a transmitter can be executed with 3 wires as well, by avoiding to connect whichever of the terminals (fig. 5).
The configuration Pt100 double with 2 wires is only available for the ATEX intrinsically safe certified inserts.
... WITH TERMINAL
BLOCK
red
red
Ω
white
white
A
... WITH TRANSMITTER
6
5
N
C
ML
NU
ELECTRICAL DIAGRAM ON TERMINAL BLOCK
+
1
-
2
mA
3
4
41
N
ML
NUN
N
C
A
ML
N
M4x1
C
IL
2 x Pt 100
white
red
red
3 wires
Ø42
Ø33
40
M4x1
Ø8
TPR300
2 x Pt 100 1 x Pt 100
black
white
black
red
yellow
Ø44
Ø33
Ø8
2 wires
40
TPR100
white
4 wires
white
red
red
black
yellow
Ø42
Ø33
75
Ø6Ø3Ø6
Fig. 5: Functional components and standard electrical diagrams (ceramic terminal block and transmitter)
6 Endress+ Hauser
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Omnigrad S -TR62
Certificates & approvals
Ex approval • ATEX Certificate CESI 05ATEX038 for explosion proof type of protection: ATEX II 2 G EEx-d IIC T6..T5
T85°...T100°C. The TR62 is 4 marked.
• ATEX Certificate KEMA 01ATEX1169 X for intrinsically safe type of protection: 1GD or 1/2 GD EEx-ia IIC
T6...T1 T85...450°C. The TR62 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 TR62 thermometers do not require any specific maintenance.
In the case of ATEX certified components (transmitter, insert or thermowell) please refer to the corresponding
specific relevant documentation (at the end of the document).
Endress+Hauser 7
Page 8
Ordering information
Omnigrad S -TR62
Sales structure
TR62- Omnigrad S TR62 RTD thermometer
Thermometer complete of nipple without thermowell.
Replaceable mineral insulated inset, spring loaded in terminal head, IP66 connection with epoxy coating.
Two 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 G EEx d IIC
F
Head, material, IP grade
TA21H, Aluminium epoxy coating, , IP66
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
Neck length N; Material; Fitting
77 mm, SS 316, N, 1/2"NPT M
B
117 mm, SS 316, N, 1/2"NPT M
C
104 mm, SS 316, NU, 1/2"NPT F
D
156 mm, SS 316, NUN, 1/2"NPT M
E
77 mm, A 105, N, 1/2"NPT M
F
117 mm, A 105, N, 1/2"NPT M
G
104 mm, A 105, NU, 1/2"NPT F
H
156 mm, A 105, NUN, 1/2"NPT M
J
Special version, to be specified
Y
Insert diameter; Material ( price for 100 mm of ML)
6 mm MgO: SS316L
3
Special version, to be specified
9
Insertion length ML
... 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-B, Profibus PA ATEX, from...to...°C, 2-wire, isolated
V
THT1 separate item
1
8 Endress+ Hauser
Page 9
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
Complete with thermowell, separate item
1
Special version, to be specified
Y
TR62- ⇐ Order code (complete)
Omnigrad S -TR62
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
Brochure Field of activities - Temperature measurement FA006T/09/en
Temperature head transmitter iTEMP® PT -TMT180 TI088R/09/en
Temperature head transmitter iTEMP® PCP -TMT181 TI070R/09/en
Temperature head transmitter iTEMP® HART® -TMT182 TI078R/09/en
Temperature head transmitter iTEMP® PROFIBUS-PA® -TMT184 TI079R/09/en
RTD insert for temperature sensors - Omniset TPR100 TI268T/02/en
RTD insert for temperature sensors - Omniset TPR300 TI290T/02/en
Safety instructions for use in hazardous areas (TPR100) XA003T/02/z1
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
TI281T/02/en/07.05
FM+SGML6.0
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