TI01098T/09/EN/04.19
71428883
2019-01-17
Products
Solutions Services
Technical Information
Omnigrad S TR88, TC88
Modular Thermometer
TR88 with resistance insert (RTD)
TC88 with thermocouple insert (TC)
Extension neck and threaded connection for
installation in an existing thermowell
Application
• Universal range of application
• Suitable for installation in already existing thermowells
• Measuring range:
– Resistance insert (RTD): –200 to 600 °C (–328 to 1 112 °F)
– Thermocouple (TC): –40 to 1 100 °C (–40 to 2 012 °F)
• Degree of protection up to IP68
Head transmitter
All Endress+Hauser transmitters are available with enhanced accuracy and reliability
compared to directly wired sensors. Easy customizing by choosing one of the
following outputs and communication protocols:
• Analog output 4 to 20 mA
• HART
• PROFIBUS® PA
• FOUNDATION Fieldbus™
®
Your benefits
• High degree of flexibility thanks to modular design with standard terminal heads
as per DIN EN 50446 and customer-specific immersion lengths
• Variable total length in suitable thermowells thanks to compression fitting on
extension neck
• Types of protection for use in hazardous locations:
– Intrinsic Safety (Ex ia)
– Non-sparking (Ex nA)
Function and system design
Measuring principle Resistance thermometer (RTD)
These resistance thermometers use a Pt100 temperature sensor according to IEC 60751. The
temperature sensor is a temperature-sensitive platinum resistor with a resistance of 100 Ω at
0 °C (32 °F) and a temperature coefficient α = 0.003851 °C-1.
There are generally two different kinds of platinum resistance thermometers:
• Wire wound (WW): Here, a double coil of fine, high-purity platinum wire is located in a ceramic
support. This is then sealed top and bottom with a ceramic protective layer. Such resistance
thermometers not only facilitate very reproducible measurements but also offer good long-term
stability of the resistance/temperature characteristic within temperature ranges up to
600 °C (1 112 °F). This type of sensor is relatively large in size and it is comparatively sensitive to
vibrations.
• Thin film platinum resistance thermometers (TF): A very thin, ultrapure platinum layer,
approx. 1 μm thick, is vaporized in a vacuum on a ceramic substrate and then structured
photolithographically. The platinum conductor paths formed in this way create the measuring
resistance. Additional covering and passivation layers are applied and reliably protect the thin
platinum layer from contamination and oxidation, even at high temperatures.
The primary advantages of thin film temperature sensors over wire wound versions are their smaller
sizes and better vibration resistance. A relatively low principle-based deviation of the resistance/
temperature characteristic from the standard characteristic of IEC 60751 can frequently be observed
among TF sensors at high temperatures. As a result, the tight limit values of tolerance category A as
per IEC 60751 can only be observed with TF sensors at temperatures up to approx. 300 °C (572 °F).
Omnigrad S TR88, TC88
Thermocouples (TC)
Thermocouples are comparatively simple, robust temperature sensors which use the Seebeck effect
for temperature measurement: if two electrical conductors made of different materials are connected
at a point, a weak electrical voltage can be measured between the two open conductor ends if the
conductors are subjected to a thermal gradient. This voltage is called thermoelectric voltage or
electromotive force (emf.). Its magnitude depends on the type of conducting materials and the
temperature difference between the "measuring point" (the junction of the two conductors) and the
"cold junction" (the open conductor ends). Accordingly, thermocouples primarily only measure
differences in temperature. The absolute temperature at the measuring point can be determined
from these if the associated temperature at the cold junction is known or is measured separately and
compensated for. The material combinations and associated thermoelectric voltage/temperature
characteristics of the most common types of thermocouple are standardized in the IEC 60584 and
ASTM E230/ANSI MC96.1 standards.
2 Endress+Hauser
Omnigrad S TR88, TC88
A
20-250V DC/AC
4...20 mA
24V DC / 30 mA
B
C
°C
E
1 2
3
IL
ML
4
8
ML
5
6 7
Measuring system
A0012641
1 Application example
A Thermometer with fitted head transmitter mounted in an existing onsite thermowell
B RIA16 field display unit - The display unit records the analog measuring signal from the head transmitter and
shows this on the display. The LC display shows the current measured value in digital form and as a bar graph
indicating a limit value violation. The display unit is looped into the 4 to 20 mA circuit and gets the required
energy from there. More information on this can be found in the Technical Information (see "Documentation").
C Active barrier RN221N - The RN221N (24 V DC, 30 mA) active barrier has a galvanically isolated output for
supplying voltage to loop-powered transmitters. The universal power supply works with an input supply
voltage of 20 to 250 V DC/AC, 50/60 Hz, which means that it can be used in all international power grids.
More information on this can be found in the Technical Information (see "Documentation").
Equipment architecture
A0012672
2 Thermometer design
1 Insert with head transmitter mounted (example with 3 mm (0.12 in))
2 Insert with terminal block mounted (example with 6 mm (0.24 in))
3 Complete thermometer with terminal head
4 Thermowell connection: Threaded connection on extension neck
5 Thermowell connection: Adjustable compression fitting on the extension neck. Possible maximum length of
the extension neck E as basic condition for the nominal calculation of the insertion length IL.
6 Thermowell connection: Adjustable compression fitting on the extension neck. The length E can be adjusted
7 Existing onsite thermowell located in the process
8 Version without extension neck, if thermowell and extension neck are present on site in the process (E = 0
E Length of extension neck
IL Insertion length
ML Insertion length for existing onsite components
during the installation.
mm)
Endress+Hauser 3
Omnigrad S TR88, TC88
Thermometers from the Omnigrad S TR88 and TC88 series have a modular design. The terminal
head is used as a connection module for the mechanical and electrical connection of the insert. The
position of the actual thermometer sensor in the insert ensures that it is mechanically protected. If
installed in a thermowell the insert can be exchanged and calibrated without interrupting the
process. The insert has flying leads, a ceramic connection socket or mounted temperature
transmitter. The thermometers are designed for installation in an existing onsite thermowell.
Different threaded connections are available on the bottom of the extension neck for installation in
the thermowell. Insofar as the thermowell is suited to this purpose, the thermometer may also be
mounted using a suitable compression fitting on the extension neck. This means that thermometers
with a fixed insertion length (ML) can be used variably, even in thermowells of varying length, and
can be installed in such a way that an optimum thermal contact is guaranteed between the tip of the
insert and the bottom of the thermowell.
Measurement range
• RTD: –200 to 600 °C (–328 to 1 112 °F)
• TC: –40 to 1 100 °C (–40 to 2 012 °F)
Performance characteristics
Operating conditions Ambient temperature range
Terminal head Temperature in °C (°F)
Without mounted head transmitter
With mounted head transmitter –40 to 85 °C (–40 to 185 °F)
With mounted head transmitter and
display
Process pressure
The maximum process pressure depends on the thermowell into which the thermometer is screwed.
For an overview of the Endress+Hauser thermowells which may be used, see → 22.
Permitted flow rate as a function of immersion length
The maximum permitted flow rate to which the thermometer can be subjected, reduces the greater
the immersion depth of the thermowell in the flowing medium. In addition, it is dependent on the
diameter of the tip of the thermowell, the medium type, process temperature and process pressure.
For an overview of the Endress+Hauser thermowells which may be used, see → 22 .
Depends on the terminal head used and the cable gland or fieldbus
connector, see 'Terminal heads' section
–20 to 70 °C (–4 to 158 °F)
Shock and vibration resistance
The Endress+Hauser inserts meet the requirements of IEC 60751 which specify shock and vibration
resistance of 3g in the range from 10 to 500 Hz. The vibration resistance at the measuring point
depends on the sensor type and design, see the following table:
Version Vibration resistance for the sensor tip
Pt100 (WW or TF) 30 m/s² (3g)
iTHERM StrongSens Pt100 (TF) > 600 m/s² (60g)
4 Endress+Hauser
Omnigrad S TR88, TC88
A
AA
-200 -100 0 100 200 300 400 500 600°C
0.5
1.0
1.5
2.0
B
2.5
3.0
- 0.5
- 1.0
- 1.5
- 2.0
- 2.5
- 3.0
B
A
AA
Max. deviation (°C)
Max. deviation (°C)
Accuracy
Permissible deviation limits of thermoelectric voltages from the standard characteristic for
thermocouples as per IEC 60584 or ASTM E230/ANSI MC96.1:
Standard Type Standard tolerance Special tolerance
IEC 60584 Class Deviation Class Deviation
1) |t| = absolute value °C
Standard Type Standard tolerance Special tolerance
ASTM E230/ANSI
MC96.1
1) |t| = absolute value °C
RTD resistance thermometer as per IEC 60751
J (Fe-CuNi) 2 ±2.5 °C (–40 to 333 °C)
±0.0075 |t|
K (NiCr-NiAl) 2 ±2.5 °C (–40 to 333 °C)
±0.0075 |t|
1)
(333 to 750 °C)
1)
(333 to 1 200 °C)
Deviation, the larger respective value applies
J (Fe-CuNi) ±2.2 K or ±0.0075 |t|
K (NiCrNiAl)
±2.2 K or ±0.02 |t|
±2.2 K or ±0.0075 |t|
1)
1 ±1.5 °C (–40 to 375 °C)
±0.004 |t|
1 ±1.5 °C (–40 to 375 °C)
±0.004 |t|
1)
(0 to 760 °C) ±1.1 K or ±0.004 |t|
1)
1)
(0 to 760 °C)
(–200 to 0 °C)
1)
(0 to 1 260 °C)
±1.1 K or ±0.004 |t|
(0 to 1 260 °C)
(375 to 750 °C)
(375 to 1 000 °C)
1)
1)
Class Max. tolerances (°C) Characteristics
Cl. AA, former 1/3
± (0.1 + 0.0017 · |t|
1)
)
Cl. B
Cl. A ± (0.15 + 0.002 · |t|)
Cl. B ± (0.3 + 0.005 · |t|)
Temperature ranges for compliance with the
tolerance classes
Wire wound
sensor (WW):
Cl. A Cl. AA
–
–50 to +250 °C
100 to +450 °C
Thin-film version
Cl. A Cl. AA
(TF):
• Standard
• iTHERM
StrongSens
–30 to +300 °C
–30 to +300 °C
0 to +150 °C
0 to +200 °C
1) |t| = absolute value °C
In order to obtain the maximum tolerances in °F, the results in °C must be multiplied by a factor
of 1.8.
Endress+Hauser 5
A0008588-EN
Omnigrad S TR88, TC88
Response time
Tested in accordance with IEC 60751 in flowing water (0.4 m/s at 30 °C):
Insert:
Sensor type Diameter ID Response time Thin film (TF)
iTHERM StrongSens 6 mm (0.24 in) t
3 mm (0.12 in) t
TF Sensor
6 mm (0.24 in) t
3 mm (0.12 in) t
WW Sensor
6 mm (0.24 in) t
3 mm (0.12 in) t
Thermocouple (TPC100)
grounded
6 mm (0.24 in) t
3 mm (0.12 in) t
Thermocouple (TPC100)
ungrounded
6 mm (0.24 in) t
50
t
90
50
t
90
50
t
90
50
t
90
50
t
90
50
t
90
50
t
90
50
t
90
50
t
90
< 3.5 s
< 10 s
2.5 s
5.5 s
5 s
13 s
2 s
6 s
4 s
12 s
0.8 s
2 s
2 s
5 s
1 s
2.5 s
2.5 s
7 s
Insulation resistance
Dielectric strength
Self heating
Calibration
Response time for the sensor assembly without transmitter.
• RTD:
Insulation resistance according to IEC 60751 > 100 MΩ at 25 °C between terminals and sheath
material measured with a minimum test voltage of 100 V DC
• TC:
Insulation resistance according to IEC 1515 between terminals and sheath material with a test
voltage of 500 V DC:
– > 1 GΩ at 20 °C
– > 5 MΩ at 500 °C
Tested at a room temperature for 5 s:
• 6 mm (0.24 in): ≥ 1 000 V DC between terminals and insert sheath
• 3 mm (0.12 in): ≥ 250 V DC between terminals and insert sheath
RTD elements are passive resistances that are measured using an external current. This
measurement current causes a self-heating effect in the RTD element itself which in turn creates an
additional measurement error. In addition to the measurement current, the size of the measurement
error is also affected by the temperature conductivity and flow velocity of the process. This selfheating error is negligible when an Endress+Hauser iTEMP temperature transmitter (very small
measurement current) is connected.
Endress+Hauser provides comparison temperature calibration from
–80 to +1 400 °C (–110 to +2 552 °F) based on the International Temperature Scale (ITS90).
6 Endress+Hauser
Omnigrad S TR88, TC88
Calibrations are traceable to national and international standards. The calibration certificate is
referenced to the serial number of the thermometer. Only the insert is calibrated.
Material
Insert:
⌀6 mm (0.24 in) and 3 mm (0.12 in)
Temperature range without head transmitter with head transmitter
–80 to –40 °C (–110 to –40 °F) 200 (7.87)
–40 to 0 °C (–40 to 32 °F) 160 (6.3)
0 to 250 °C (32 to 480 °F) 120 (4.72) 150 (5.91)
250 to 550 °C (480 to 1 020 °F) 300 (11.81)
550 to 1 400 °C (1 020 to 2 552 °F) 450 (17.72)
Minimum insertion length of insert in mm (in)
Extension neck, insert and process connection.
The temperatures for continuous operation specified in the following table are only intended as
reference values for use of the various materials in air and without any significant compressive load.
The maximum operation temperatures are reduced considerably in some cases where abnormal
conditions such as high mechanical load occur or in aggressive media.
Material
name
AISI 316L/
1.4404
1.4435
AISI 316Ti/
1.4571
Alloy 600/
2.4816
Short form Recommended
max. temp. for
continuous use in
air
X2CrNiMo17-12-2
X2CrNiMo18-14-3
X6CrNiMoTi17-12-2 700 °C (1 292 °F) • Properties comparable to AISI316L
NiCr15Fe 1 100 °C (2 012 °F) • A nickel/chromium alloy with very good resistance
650 °C (1 202 °F)
Properties
1)
• Austenitic, stainless steel
• High corrosion resistance in general
• Particularly high corrosion resistance in chlorinebased and acidic, non-oxidizing atmospheres
through the addition of molybdenum (e.g.
phosphoric and sulfuric acids, acetic and tartaric
acids with a low concentration)
• Increased resistance to intergranular corrosion and
pitting
• Compared to 1.4404, 1.4435 has even higher
corrosion resistance and a lower delta ferrite
content
• Addition of titanium means increased resistance to
intergranular corrosion even after welding
• Broad range of uses in the chemical, petrochemical
and oil industries as well as in coal chemistry
• Can only be polished to a limited extent, titanium
streaks can form
to aggressive, oxidizing and reducing atmospheres,
even at high temperatures
• Resistant to corrosion caused by chlorine gas and
chlorinated media as well as many oxidizing
mineral and organic acids, sea water etc.
• Corrosion from ultrapure water
• Not to be used in a sulfur-containing atmosphere
1) Can be used to a limited extent up to 800 °C (1472 °F) for low compressive loads and in non-corrosive
media. Please contact your Endress+Hauser sales team for further information.
Components
Family of temperature transmitters
Endress+Hauser 7
Thermometers fitted with iTEMP transmitters are an installation-ready complete solution to
improve temperature measurement by significantly increasing accuracy and reliability, when
compared to direct wired sensors, as well as reducing both wiring and maintenance costs.
Omnigrad S TR88, TC88
PC programmable head transmitters
They offer a high degree of flexibility, thereby supporting universal application with low inventory
storage. The iTEMP transmitters can be configured quickly and easily at a PC. Endress+Hauser offers
free configuration software which can be downloaded from the Endress+Hauser Website. More
information can be found in the Technical Information.
HART® programmable head transmitters
The transmitter is a 2-wire device with one or two measuring inputs and one analog output. The
device not only transfers converted signals from resistance thermometers and thermocouples, it also
transfers resistance and voltage signals using HART® communication. It can be installed as an
intrinsically safe apparatus in Zone 1 hazardous areas and is used for instrumentation in the
terminal head (flat face) as per DIN EN 50446. Swift and easy operation, visualization and
maintenance using universal device configuration tools like FieldCare, DeviceCare or
FieldCommunicator 375/475. For more information, see the Technical Information.
PROFIBUS® PA head transmitters
Universally programmable head transmitter with PROFIBUS® PA communication. Conversion of
various input signals into digital output signals. High accuracy over the complete ambient
temperature range. The configuration of PROFIBUS PA functions and of device-specific parameters is
performed via fieldbus communication. For more information, see the Technical Information.
FOUNDATION Fieldbus™ head transmitters
Universally programmable head transmitter with FOUNDATION Fieldbus™ communication.
Conversion of various input signals into digital output signals. High accuracy over the complete
ambient temperature range. All transmitters are released for use in all important process control
systems. The integration tests are performed in Endress+Hauser's "System World". For more
information, see the Technical Information.
Advantages of the iTEMP transmitters:
• Dual or single sensor input (optionally for certain transmitters)
• Pluggable display (optionally for certain transmitters)
• Unsurpassed reliability, accuracy and long-term stability in critical processes
• Mathematical functions
• Monitoring of the thermometer drift, sensor backup functionality, sensor diagnostic functions
• Sensor-transmitter matching for dual sensor input transmitters, based on Callendar/Van Dusen
coefficients
8 Endress+Hauser
Omnigrad S TR88, TC88
107.5 (4.23)
68.5 (2.7)
28
(1.1)
78 (3.1)
15.5 (0.6)
107.5 (4.23)
91.6 (3.61)
28
(1.1)
78 (3.1)
15.5 (0.6)
107.5 (4.23)
110 (4.3)
28
(1.1)
78 (3.1)
15.5 (0.6)
Terminal heads
All terminal heads have an internal shape and size in accordance with DIN EN 50446 flat face and a
thermometer connection of M24x1.5, G1/2" or 1/2" NPT thread. All dimensions in mm (in). The
cable glands in the diagrams correspond to M20x1.5 connections. Specifications without head
transmitter installed. For ambient temperatures with head transmitter installed, see "Operating
conditions" section.
TA30A Specification
• Degree of protection:
– IP66/68 (NEMA Type 4x encl.)
– For ATEX: IP66/67
• Temperature: –50 to +150 °C (–58 to +302 °F) without cable
gland
• Material: aluminum, polyester powder coated
Seals: silicone
• Cable entry thread: G ½", ½" NPT and M20x1.5;
• Protective fitting connection: M24x1.5
• Color of head: blue, RAL 5012
• Color of cap: gray, RAL 7035
• Weight: 330 g (11.64 oz)
A0009820
• Ground terminal, internal and external
• 3-A marked
TA30A with display window in cover Specification
• Degree of protection:
– IP66/68 (NEMA Type 4x encl.)
– For ATEX: IP66/67
• Temperature: –50 to +150 °C (–58 to +302 °F) without cable
gland
• Material: aluminum, polyester powder coated
Seals: silicone
• Cable entry thread: G ½", ½" NPT and M20x1.5
• Protective fitting connection: M24x1.5
• Color of head: blue, RAL 5012
Color of cap: gray, RAL 7035
• Weight: 420 g (14.81 oz)
• With TID10 display
• Ground terminal, internal and external
A0009821
• 3-A marked
TA30D Specification
• Degree of protection:
– IP66/68 (NEMA Type 4x encl.)
– For ATEX: IP66/67
• Temperature: –50 to +150 °C (–58 to +302 °F) without cable
gland
• Material: aluminum, polyester powder coated
Seals: silicone
• Cable entry thread: G ½", ½" NPT and M20x1.5
• Protective fitting connection: M24x1.5
• Two head transmitters can be mounted. In the standard
configuration one transmitter is mounted in the terminal
Endress+Hauser 9
A0009822
head cover and an additional terminal block is installed
directly on the insert.
• Color of head: blue, RAL 5012
• Color of cap: gray, RAL 7035
• Weight: 390 g (13.75 oz)
• Ground terminal, internal and external
• 3-A marked
TA30P Specification
!83 (3.3)
114 (4.5)
11
(0.43)
68 (2.7)
41.5 (1.63)
116 (6.54)
25 (1)
84 (3.3)
73 (2.87)
84 (3.3)
95 (3.9)
57 (2.2)
122 (4.8)
28 (1.1)
• Protection class: IP65
• Max. temperature: –40 to +120 °C (–40 to +248 °F)
• Material: polyamide (PA), antistatic
Seals: silicone
• Threaded cable entry: M20x1.5
• Protection armature connection: M24x1.5
• Two head transmitters can be mounted. In the standard
version, one transmitter is mounted in the terminal head
cover and an additional terminal block is installed directly on
the insert.
• Head and cap color: black
• Weight: 135 g (4.8 oz)
• Types of protection for use in hazardous locations: Intrinsic
Safety (G Ex ia)
• Ground terminal: only internal via auxiliary clamp
A0012930
TA20B Specification
• Protection class: IP65
• Max. temperature: –40 to +80 °C (–40 to +176 °F) without
cable gland
• Material: polyamide (PA)
• Cable entry: M20x1.5
• Head and cap color: black
• Weight: 80 g (2.82 oz)
• 3-A® marked
Omnigrad S TR88, TC88
A0008663
TA21E Specification
• Protection class: IP65 (NEMA Type 4x encl.)
• Temperature: –40 to 130 °C (–40 to 266 °F) silicone, up to
100 °C (212 °F) rubber seal without cable gland (observe
max. permitted temperature of the cable gland!)
• Material: aluminum alloy with polyester or epoxy coating,
rubber or silicone seal under the cover
• Cable entry: M20x1.5 or plug M12x1 PA
• Protection armature connection: M24x1.5, G 1/2" or NPT
1/2"
• Head color: blue, RAL 5012
• Cap color: gray, RAL 7035
• Weight: 300 g (10.58 oz)
• 3-A® marked
A0008669
10 Endress+Hauser
Omnigrad S TR88, TC88
114 (4.49)
119 (4.7)*
28 (1.1)
89 (3.5)
41 (1.61)
64 (2.52)
79 (3.11)
53 (2.1)
54 (2.13)
81 (3.2)
28 (1.1)
!55 (2.17)
TA20J Specification
• Protection class: IP66/IP67 (NEMA Type 4x encl.)
• Temperature: –40 to 70 °C (–40 to 158 °F) without cable
gland
• Material: 316L (1.4404) stainless steel, rubber seal under the
cover (hygienic design)
• 4 digits 7-segments LC display (loop powered with
optional4 to 20 mA transmitter)
• Cable entry: 1/2" NPT, M20x1.5 o plug M12x1 PA
• Protection armature connection: M24x1.5 or 1/2" NPT
• Head and cap color: stainless steel, polished
• Weight: 650 g (22.93 oz) with display
• Humidity: 25 to 95 %, no condensation
• 3-A® marked
The programming is executed through 3 keys at the bottom of
the display.
A0008866
* dimensions with optional display
TA20R Specification
• Protection class: IP66/67
• Max. temperature: –40 to +100 °C (–40 to +212 °F) without
cable gland
• Material: SS 316L (1.4404) stainless steel
• Cable entry: 1/2" NPT, M20x1.5 or plug M12x1 PA
• Head and cap color: stainless steel
• Weight: 550 g (19.4 oz)
• LABS-free
• 3-A® marked
A0008667
Maximum ambient temperatures for cable glands and fieldbus connectors
Type Temperature range
Cable gland ½" NPT, M20x1.5 (non Ex) –40 to +100 °C (–40 to +212 °F)
Cable gland M20x1.5 (for dust ignition-proof area) –20 to +95 °C (–4 to +203 °F)
Fieldbus connector (M12x1 PA, 7/8" FF) –40 to +105 °C (–40 to +221 °F)
Endress+Hauser 11
Omnigrad S TR88, TC88
M4x1
!6
(0.24)
10 (0.4)
90 (3.54)
1x Pt100
"
!33 (1.3)
!42 (1.65)
!ID
!ID
A B C
!ID
E
ML
ML
!ID
10 (0.4)
D
IL
Ø33 (1.3)
!44 (1.73)
!42 (1.65)
!33 (1.3)
!11 (0.43) /
!12 (0.47)
180 (7.1) "
2x Pt100
Design
All dimensions in mm (in).
3 Dimensions of the Omnigrad S TR88 and TC88
A Insert with terminal block mounted
B Insert with head transmitter mounted
C Insert with flying leads
D Model without extension neck, intended for mounting in an existing onsite extension neck
E Extension neck length
IL Total length of insert
ML Insertion length
ID Insert diameter
The insertion length (ML) must be selected on the basis of the total length and the type of
thermowell used.
A0012662
12 Endress+Hauser
Omnigrad S TR88, TC88
Insert
Sensor Standard thin-film iTHERM StrongSens Wire wound
Sensor design;
connection method
Vibration resistance of
the insert tip
Measuring range;
accuracy class
Diameter 3 mm (¹⁄₈ in), 6 mm (¹⁄₄ in) 6 mm (¹⁄₄ in) 3 mm (¹⁄₈ in), 6 mm (¹⁄₄ in)
Insert type TPR100 iTHERM TS111 TPR100
1x Pt100, 3- or 4-wire, mineral
(–58 to +752 °F), Class A or AA
Depending on the application different inserts are available for the assembly:
1x Pt100, 3- or 4-wire, mineral
insulated
Up to 3g
–50 to +400 °C
TC
Selection in order code A B E F
Sensor design; material 1x K; Alloy 600 2x K; Alloy 600 1x J; 316L 2x J; 316L
Measuring range acc. to:
DIN EN 60584 –40 to 1 200 °C –40 to 750 °C
ANSI MC 96.1 0 to 1 250 °C 0 to 750 °C
TC Standard, accuracy IEC 60584-2; class 1
Insert type TPC100
Diameter 3 mm (0.12 in) or 6 mm (0.24 in), depending on the selected tip shape
Enhanced vibration resistance
(–58 to +932 °F), Class A or AA
insulated
> 60g
–50 to +500 °C
1x Pt100, 3- or 4-wire,
mineral insulated
–200 to +600 °C (–328 to +1 112 °F), Class A or AA
ASTM E230-03; special
2x Pt100, 3-wire, mineral
insulated
Up to 3g
Weight
0.5 to 2.5 kg (1 to 5.5 lbs) for standard options.
Endress+Hauser 13
Omnigrad S TR88, TC88
E
ML,
L
TL
TL
SW/AF
D
F
L
B
Process connection
The thermometer is designed for installation in an existing onsite thermowell or in a thermowell
which can be ordered separately. The installation is done using the threaded connection on the
bottom of the extension neck or using a compression fitting.
Threaded connection Version Thread length TL Width
across flats
AF
Cylindrical Conical M M14x1.5 12 mm (0.47 in) 17
M18x1.5 24
M20x1.5 15 mm (0.6 in) 24
G G 1/2" 15 mm (0.6 in) 27
NPT NPT 1/2" 8 mm (0.32 in) 22
R R 3/4" 8.5 mm (0.33 in) 27
R 1/2" 22
A0019445
Threaded compression
fitting (TA50)
F L B Clamping
ring
material
G1/2" 47 mm
(1.85 in)
15 mm
(0.6 in)
SS316
1)
Max. process
temperature
500 °C (932 °F) 40 bar at 20 °C
Max. process
pressure
(580 psi at
68 °F)
Spare parts
A0016971
1) SS316 compression ferrule: Can only be used once, the compression fitting cannot be repositioned on the
protection tube after loosening. Fully adjustable immersion length on initial installation.
When using a compression fitting the thermometer is pushed through a gland and fixed using a
metal ferrule (cannot be loosened).
• The RTD insert is available as spare part TPR100 → 22
• Der iTHERM StrongSens is available as spare part TS111 → 22
• The TC insert is available as spare part TPC100 → 22
The inserts are made from mineral insulated cable (MgO) with a sheath in AISI316L/1.4404 (RTD)
or Alloy 600 (TC).
If spare parts are required, refer to the following equation:
Insertion length IL = E + L + 10 mm (0.4 in)
• Extension neck welded with threaded connection to terminal head. DIN flat face, different
connections to separate thermowell, order number TN15-...
• Compression fitting with thread, 12 mm (0.47 in), process connection thread G1/2", clamping
ring made of 316L stainless steel, order number TA50-KC
14 Endress+Hauser
Omnigrad S TR88, TC88
3
5
6
RTD
3
4
5
6
RTD
1
2
3-wire
4-wire
Power supply
head transmitter and
analog output 4 to 20 mA,
or bus connection
(red) (red)
(red) (red)
(white) (white)
(white)
mA
-
+
+
1
-
2
7
6
5
4
3
1
2
7
6
5
4
3
Sensor input 2
Sensor input 1
RTD - and 3-wire: 4
RTD 3-wire:
Bus connection
and supply voltage
Display connection
red
white
red
red
red
white
white
(black)
(black)
(yellow)
1 x Pt100
1 x Pt100
2 x Pt100
red
red
white
black
4 wires 3 wires 3 wires
white
red
red
black
yellow
red
white
red
white
Wiring
Wiring diagrams for RTD
Type of sensor connection
Head mounted transmitter TMT18x (single input)
A0016433-EN
Head mounted transmitter TMT8x (dual input)
Terminal block mounted
Wiring diagrams for TC
Endress+Hauser 15
Thermocouple wire colors
As per IEC 60584 As per ASTM E230
• Type J: black (+), white (-)
• Type K: green (+), white (-)
• Type J: white (+), red (-)
• Type K: yellow (+), red (-)
A0008848-EN
A0008591-EN
Omnigrad S TR88, TC88
-
+
6
4
1
2
Power supply
head transmitter and
analog output 4...20 mA
or bus connection
-
+
+
1
-
2
7
6
5
4
3
1
2
7
6
5
4
3
Sensor
input 2
Sensor
input 1
Bus connection
and supply voltage
Display connection
TC
TC
1 x TC
2 x TC
-
+
-
+
+
-
Head mounted transmitter TMT18x (single
input)
A0012698-EN
Terminal block mounted
Head mounted transmitter TMT8x (dual input)
A0012699-EN
16 Endress+Hauser
A0012700
Omnigrad S TR88, TC88
D
A
ML
Installation conditions
Orientation
Installation constructions
No restrictions.
A0012639
4 Thermometer installation
The thermometer is designed for installation in an existing thermowell or in a thermowell which can
be ordered separately. Different threaded connections to suit the thermowell are available on the
thermometer's extension neck (Verweisziel existiert nicht, aber @y.link.required='true'). The
necessary insertion length (ML) of the insert depends on the total length of the thermowell (A) and
the type of thermowell used. It can be freely selected within the range of
100 to 5 000 mm (3.94 to 197 in). Longer insertion lengths are available on request. This also
applies when ordering the insert as a spare part. More detailed information on determining the
insertion length (ML) required in each case can be found in the following table (applies to Endress
+Hauser thermowells with standard base thicknesses (D)).
Type of thermowell ML in mm (in) Type of thermowell ML in mm (in)
TA535 ML = A TA565 ML = A - 3 (0.12)
TA540 (flat tip)
TA540 (round tip)
TA550 ML = A - 3 (0.12) TA570 ML = A - 3 (0.12)
TA555 ML = A - 2 (0.08) TA571 ML = A - 3 (0.12)
TA557 ML = A - 2 (0.08) TA572 ML = A - 3 (0.12)
TW15 ML = A TA575 ML = A - 3 (0.12)
TA560 ML = A - 3 (0.12)
TA562 ML = A - 3 (0.12)
ML = A - 2 (0.08)
ML = A - 7 (0.28)
TA566 ML = A - 3 (0.12)
TA576 ML = A - 2 (0.08)
In the case of thermowells with a noncompliant standard base thickness (D), the following formula
must be used: ML = A - D + 3 (0.12) in mm (in).
Endress+Hauser 17
Omnigrad S TR88, TC88
250 °C (482 °F)
400 °C (752 °F)
600 °C (1112 °F)
2 4 6 8 10 12 in
800 °C (1472 °F)
20
40
60
80
100
120
140
160
180
50 100 150 200 250 300 mm
ΔT in K
1000 °C (1832 °F)
Extension neck length
Terminal head heating
Process temperature
Extension neck length
The extension neck is the part between the process connection and the terminal head. As illustrated
in the following diagram, the extension neck length influences the temperature in the terminal
head. This temperature must remain within the limit values defined in the "Operating conditions"
section.
5 Heating of the terminal head as a function of the process temperature. Temperature in terminal head =
ambient temperature 20 °C (68 °F) + ΔT
Certificates and approvals
CE mark
Hazardous area approvals
Other standards and guidelines
Test report and calibration
18 Endress+Hauser
The measuring system meets the legal requirements of the applicable EC guidelines. These are listed
in the corresponding EC Declaration of Conformity together with the standards applied. The
manufacturer confirms successful testing of the device by affixing to it the CE mark.
For further details on the available Ex versions (ATEX, CSA, FM etc.), please contact your nearest
Endress+Hauser sales organization. All relevant data for hazardous areas can be found in separate
Ex documentation.
• IEC 60529: Degrees of protection provided by enclosures (IP code)
• IEC/EN 61010-1: Safety requirements for electrical equipment for measurement, control and
laboratory use
• IEC 60751: Industrial platinum resistance thermometers
• IEC 60584 and ASTM E230/ANSI MC96.1: Thermocouples
• DIN EN 50446: Terminal heads
The "Factory calibration" is carried out according to an internal procedure in a laboratory of Endress
+Hauser accredited by the European Accreditation Organization (EA) to ISO/IEC 17025. A
calibration which is performed according to EA guidelines (SIT/Accredia) or (DKD/DAkkS) may be
requested separately. The calibration is performed on the replaceable insert of the thermometer. In
the case of thermometers without a replaceable insert, the entire thermometer - from the process
connection to the tip of the thermometer - is calibrated.
A0012701-EN
Omnigrad S TR88, TC88
Ordering information
Detailed ordering information is available from the following sources:
• In the Product Configurator on the Endress+Hauser website: www.endress.com -> Click "Corporate"
-> Select your country -> Click "Products" -> Select the product using the filters and search field ->
Open product page -> The "Configure" button to the right of the product image opens the Product
Configurator.
• From your Endress+Hauser Sales Center: www.addresses.endress.com
Product Configurator - the tool for individual product configuration
• Up-to-the-minute configuration data
• Depending on the device: Direct input of measuring point-specific information such as
measuring range or operating language
• Automatic verification of exclusion criteria
• Automatic creation of the order code and its breakdown in PDF or Excel output format
• Ability to order directly in the Endress+Hauser Online Shop
Endress+Hauser 19
Omnigrad S TR88, TC88
Accessories
Various accessories, which can be ordered with the device or subsequently from Endress+Hauser, are
available for the device. Detailed information on the order code in question is available from your
local Endress+Hauser sales center or on the product page of the Endress+Hauser website:
www.endress.com.
Communication-specific accessories
Configuration kit TXU10 Configuration kit for PC-programmable transmitter with setup software and
interface cable for PC with USB port
Order code: TXU10-xx
Commubox FXA195
HART
Commubox FXA291 Connects Endress+Hauser field devices with a CDI interface (= Endress+Hauser
HART Loop Converter
HMX50
Wireless HART adapter
SWA70
Fieldgate FXA320 Gateway for the remote monitoring of connected 4-20 mA measuring devices via a
For intrinsically safe HART communication with FieldCare via the USB interface.
For details, see "Technical Information" TI00404F
Common Data Interface) and the USB port of a computer or laptop.
For details, see "Technical Information" TI00405C
Is used to evaluate and convert dynamic HART process variables to analog current
signals or limit values.
For details, see "Technical Information" TI00429F and Operating Instructions
BA00371F
Is used for the wireless connection of field devices.
The WirelessHART adapter can be easily integrated into field devices and existing
infrastructures, offers data protection and transmission safety and can be operated
in parallel with other wireless networks with minimum cabling complexity.
For details, see Operating Instructions BA061S
Web browser.
For details, see "Technical Information" TI00025S and Operating Instructions
BA00053S
Service-specific accessories
Fieldgate FXA520 Gateway for the remote diagnostics and remote configuration of connected HART
measuring devices via a Web browser.
For details, see "Technical Information" TI00025S and Operating Instructions
BA00051S
Field Xpert SFX100 Compact, flexible and robust industry handheld terminal for remote configuration
and for obtaining measured values via the HART current output (4-20 mA).
For details, see Operating Instructions BA00060S
Accessories Description
Applicator Software for selecting and sizing Endress+Hauser measuring devices:
• Calculation of all the necessary data for identifying the optimum measuring
device: e.g. pressure loss, accuracy or process connections.
• Graphic illustration of the calculation results
Administration, documentation and access to all project-related data and
parameters over the entire life cycle of a project.
Applicator is available:
Via the Internet: https://portal.endress.com/webapp/applicator
20 Endress+Hauser
Omnigrad S TR88, TC88
Configurator Product Configurator - the tool for individual product configuration
• Up-to-the-minute configuration data
• Depending on the device: Direct input of measuring point-specific information
such as measuring range or operating language
• Automatic verification of exclusion criteria
• Automatic creation of the order code and its breakdown in PDF or Excel output
format
• Ability to order directly in the Endress+Hauser Online Shop
The Configurator is available on the Endress+Hauser website: www.endress.com ->
Click "Corporate" -> Select country -> Click "Products" -> Select the product using the
filters and search field -> Open product page -> The "Configure" button to the right
of the product image opens the Product Configurator.
W@M Life cycle management for your plant
W@M supports with a wide range of software applications over the entire process:
from planning and procurement, to the installation, commissioning and operation
of the measuring devices. All the relevant device information, such as the device
status, spare parts and device-specific documentation, is available for every device
over the entire life cycle.
The application already contains the data of your Endress+Hauser device. Endress
+Hauser also takes care of maintaining and updating the data records.
W@M is available:
Via the Internet: www.endress.com/lifecyclemanagement
System components
Accessories Description
Field display unit RIA16 The display unit records the analog measuring signal from the head transmitter
and shows this on the display. The LC display shows the current measured value in
digital form and as a bar graph indicating a limit value violation. The display unit is
looped into the 4 to 20 mA circuit and gets the required energy from there.
For details, see the "Technical Information" document TI00144R/09/en
RN221N Active barrier with power supply for safe separation of 4-20 mA standard signal
circuits. Offers bidirectional HART transmission.
For details, see "Technical Information" TI00073R and Operating Instructions
BA00202R
RNS221 Supply unit for powering two 2-wire measuring devices solely in the non-Ex area.
Bidirectional communication is possible via the HART communication jacks.
For details, see "Technical Information" TI00081R and Brief Operating
Instructions KA00110R
Endress+Hauser 21
Omnigrad S TR88, TC88
Documentation
Technical Information:
• iTEMP Temperature head transmitter:
– TMT180, PC-programmable, single-channel, Pt100 (TI088R/09/en)
– PCP TMT181, PC-programmable, single-channel, RTD, TC, Ω, mV (TI00070R/09/en)
– HART® TMT182, single-channel, RTD, TC, Ω, mV (TI078R/09/en)
– HART® TMT82, two-channel, RTD, TC, Ω, mV (TI01010T/09/en)
– PROFIBUS® PA TMT84, two-channel, RTD, TC, Ω, mV (TI138R/09/en)
– FOUNDATION FieldbusTM TMT85, two-channel, RTD, TC, Ω, mV (TI134R/09/en)
• Inserts:
– Resistance thermometer insert Omniset TPR100 (TI268t/02/en)
– Thermocouple insert Omniset TPC100 (TI278t/02/en)
– iTHERM TS111 Insert for installation in thermometers (TI01014T/09/en)
• Application example:
– RN221N Active barrier, for supplying loop-powered transmitters (TI073R/09/en)
– RIA16 Field display unit, loop-powered (TI00144R/09/en)
Technical information thermowells:
Type of thermowell
TA535 TI250T/02/en TA565 TI160T/02/en
TA540 TI00166T/09/en TA566 TI177T/02/en
TA550 TI153T/02/en TA570 TI161T/02/en
TA555 TI154T/02/en TA571 TI178T/02/en
TA557 TI156T/02/en TA572 TI179T/02/en
TW15 TI00265T/02/en TA575 TI162T/02/en
TA560 TI159T/02/en TA576 TI163T/02/en
TA562 TI00230T/09/en
Supplementary ATEX documentation:
• Omnigrad TRxx, TCxx, TSTxxx, TxCxxx; Omniset TPR100, TET10x, TPC100, TEC10x, iTHERM
TS111 ATEX II 3GD Ex nA (XA00044R/09/a3)
• RTD/TC Thermometer Omnigrad TRxx, TCxx, TxCxxx, ATEX II 1GD or II 1/2GD Ex ia IIC T6...T1
(XA00072R/09/a3)
• Inserts Omniset TPR100, TPC100, ATEX II 1G (XA087R/09/a3)
• iTHERM TS111, TM211 Omnigrad TST310, TSC310 Omniset TPR100, TPC100 IECEx Ex ia IIC
T6…T1 (XA00100R/09/a3)
22 Endress+Hauser
www.addresses.endress.com
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