TR62
TI281T/02/en 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 applica-tions.
In compliance to EN 50014/18 (ATEX certification) it is there-fore 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 trans-mitters)
?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
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Omnigrad S TR62
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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 10-3 °C -1.
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).
The housing is in painted aluminium alloy; it is suitable to contain a transmit-ter and/or the ceramic block of the inset; the “Ingress Protection” is: IP66to 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 diam-eter, is composed by MgO cable (SS 316L sheath) with a sensing element (Pt100 ohm/0°C) positioned at the MgO cable tip.
The standard ele c trical connection is to 2, 3 or 4 wires for sensing element (Pt100).
Fig.1:TR 62 with the various types of thermowell connections and end parts of the probe
Material & Weight
Performance
Operating conditions
Housing
Insert Extension neck
Weight
aluminium epoxy coated sheath in SS 316L/1.4404SS 316/1.4401 or ASTM
A105From 0,5 to 1.0 kg for standard options
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 60751Acceleration 3 g of peak
Frequency
from 10Hz to 500Hz and back
Time of the test 10 hours
Omnigrad S TR62
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Accuracy
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
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 ther-mowell 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.
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)
Stem diameter of the insert Pt100 type t (x)Response time 6 mm TF / WW t 503,5 s t 908,0 s 3 mm
TF / WW
t 502,0 s t 90
5,0 s
Measurement Insulation type
Result
Insulation resistance between terminals and probe sheath above 100 M Ω at 25°C According to IEC 60751, test voltage 250 V
above 10 M Ω at 300°C
Omnigrad S TR62
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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
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 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 sys-tems. The single or double threaded electrical
cable entry can be: M20x1.5, 1/2” NPT or 3/4” NPT, G1/2".
Fig.3:
Housing TA21H
Omnigrad S TR62
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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 pos-sible 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:
As illustrated by the drawing in fig. 5, 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.
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:
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.
Type Material Length N (mm)Thread C (mm)Neck draw N 316/A105771/2" NPT M 8 (male)A
N 316/A1051171/2" NPT M 8 (male)A NU 316/A1051041/2" NPT F 8 (female)B NUN
316/A105
156
1/2" NPT M
8 (male)
C
Head transmitter Communication software PCP TMT181ReadWin? 2000
HART ? TMT182ReadWin? 2000, FieldCare, Hand held module DXR275, DXR375PROFIBUS PA ? TMT184
FieldCare
Omnigrad S TR62
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 appli-
cation (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 ?, ..mm N , tp.N, mm N, material N, thread IL, (mm)
TPR100 / TPR300 3 or 6 N77SS 316/A1051/2"NPT M IL = ML + 77 + 33
TPR100 / TPR300 3 or 6 N117SS 316/A1051/2"NPT M IL = ML + 117 + 33
TPR100 / TPR300 3 or 6 NU104SS 316/A1051/2"NPT F IL = ML + 104 + 33
TPR100 / TPR300 3 or 6 NUN156SS 316/A1051/2"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.
Fig.5:Functional components and
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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).
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Omnigrad S TR62
Ordering information
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
A Non-hazardous area
C*ATEX II 1/2 GD EEx ia IIC
F*ATEX II 2 G EEx d IIC
Head, material, IP grade
A TA21H, Aluminium epoxy coating, , IP66
Y Special version, to be specified
Cable entry
A 1 x 1/2 NPT
B 2 x 1/2 NPT
C 1 x 3/4 NPT
D 2 x 3/4 NPT
E 1 x M20 x1,5
F 2 x M20 x1,5
Y Special version, to be specified
Neck length N; Material; Fitting
B77 mm, SS 316, N, 1/2"NPT M
C117 mm, SS 316, N, 1/2"NPT M
D104 mm, SS 316, NU, 1/2"NPT F
E156 mm, SS 316, NUN, 1/2"NPT M
F77 mm, A 105, N, 1/2"NPT M
G117 mm, A 105, N, 1/2"NPT M
H104 mm, A 105, NU, 1/2"NPT F
J156 mm, A 105, NUN, 1/2"NPT M
Y Special version, to be specified
Insert diameter; Material ( price for 100 mm of ML)
3 6 mm MgO: SS316L
9Special version, to be specified
Insertion length ML
X... mm
Y Special version, to be specified
Head transmitter; Range
F Flying leads
C Terminal block
2TMT180-A21 fix; 0.2K, from..to..°C, span limit -200/650°C
3TMT180-A22 fix; 0.1K, from..to..°C, span limit -50/250°C
4TMT180-A11 prog.; 0.2K, from..to..°C, span limit -200/650°C
5TMT180-A12 prog.; 0.1K, from..to..°C, span limit -50/250°C
P TMT181-A, PCP, from...to...°C, 2-wire, isolated
Q TMT181-B, PCP ATEX, from...to...°C, 2-wire, isolated
R TMT182-A, HART, from...to...°C, 2-wire, isolated
T TMT182-B, HART ATEX, from...to...°C, 2-wire, isolated
S TMT184-A, Profibus PA, from...to...°C, 2-wire, isolated
V TMT184-B, Profibus PA ATEX, from...to...°C, 2-wire, isolated
1THT1 separate item
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Omnigrad S TR62
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Sales structure
RTD Class; Wiring
3 1 x Pt100 TF, cl. A, range: -50/400°C; 4-wire
7 1 x Pt100 TF, cl. 1/3 DIN B, range: -50/400°C; 4-wire B 2 x Pt100 WW, cl. A, range: -200/600°C; 3-wire C 1 x Pt100 WW, cl. A, range: -200/600°C; 4-wire D 2 x Pt100 WW, cl. A, range: -200/600°C; 2-wire
F 2 x Pt100 WW, cl. 1/3 DIN B, range: -200/600°C; 3-wire
G 1 x Pt100 WW, cl. 1/3 DIN B, range: -200/600°C; 4-wire Y Special version, to be specified
Additional options 0Not needed
1Complete with thermowell, separate item Y Special version, to be specified
TR62-? Order code (complete)
THT1
Model and version of the head transmitter
A11TMT180-A11 programmable from...to...°C, accuracy 0.2 K, span limit -200...650°C A12TMT180-A12 programmable from...to...°C, accuracy 0.1 K, span limit -50...250°C A13TMT180-A21AA fixed range, accuracy 0.2 K, span 0...50°C A14TMT180-A21AB fixed range, accuracy 0.2 K, span 0...100°C A15TMT180-A21AC fixed range, accuracy 0.2 K, span 0...150°C A16TMT180-A21AD fixed range, accuracy 0.2 K, span 0...250°C A17TMT180-A22AA fixed range, accuracy 0.1 K, span 0...50°C A18TMT180-A22AB fixed range, accuracy 0.1 K, span 0...100°C A19TMT180-A22AC fixed range, accuracy 0.1 K, span 0...150°C A20TMT180-A22AD fixed range, accuracy 0.1 K, span 0...250°C
A21TMT180-A21 fixed range, accuracy 0.2 K, span limit -200...650°C, from...to...°C A22TMT180-A22 fixed range, accuracy 0.1 K, span limit -50...250°C, from...to...°C F11TMT181-A PCP, 2-wire, isolated, programmable from...to...°C
F21TMT181-B PCP ATEX, 2-wire, isolated, programmable from...to...°C F22TMT181-C PCP FM IS, 2-wire, isolated, programmable from...to...°C F23TMT181-D PCP CSA, 2-wire, isolated, programmable from...to...°C
F24TMT181-E PCP ATEX II3D, 2-wire, isolated, programmable from...to...°C F25TMT181-F PCP ATEX II3D, 2-wire, isolated, programmable from...to...°C L11TMT182-A HART?, 2-wire, isolated, programmable from...to...°C
L21TMT182-B HART? ATEX, 2-wire, isolated, programmable from...to...°C L22TMT182-C HART? FM IS, 2-wire, isolated, programmable from...to...°C L23TMT182-D HART? CSA, 2-wire, isolated, programmable from...to...°C
L24TMT182-E HART? ATEX II3D, 2-wire, isolated, programmable from...to...°C L25TMT182-F HART? ATEX II3D, 2-wire, isolated, programmable from...to...°C K11TMT184-A PROFIBUS-PA?, 2-wire, programmable from...to...°C
K21TMT184-B PROFIBUS-PA? ATEX, 2-wire, programmable from...to...°C K22TMT184-C PROFIBUS-PA? FM IS, 2-wire, programmable from...to...°C K23TMT184-D PROFIBUS-PA? CSA, 2-wire, programmable from...to...°C K24TMT184-E PROFIBUS-PA? CSA, 2-wire, programmable from...to...°C
K25TMT184-F PROFIBUS-PA? ATEX II3D, 2-wire, isolated, programmable from...to...°C YYY Special transmitter
Application and services
1
Assembled into position 9
Special version THT1-? Order code (complete)
TI281T/02/en/07.05 FM+SGML6.0Supplementary 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 TPR100TI268T/02/en RTD insert for temperature sensors - Omniset TPR300TI290T/02/en Safety instructions for use in hazardous areas (TPR100)XA003T/02/z1 Industrial thermometers, RTD and thermocouples TI236T/02/en
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