Endress+Hauser M TR12 Specifications

Technical Information

Omnigrad M TR12

Modular RTD assembly
protection tube and compression fitting

Application

• Universal range of application

• Measuring range: -200...600 °C (-328...1112 °F)

• Pressure range up to 40 bar (580 psi)

• Degree of protection: up to IP 68

Head transmitters

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...20 mA

•HART

•PROFIBUS

• FOUNDATION Fieldbus™

®

®

PA

Your benefits

• High flexibility due to modular assembly with standard
terminal heads and customized
immersion length

• Highest possible compatibility with a design
according to DIN 43772

• Fast response time with reduced/tapered tip form

• Types of protection for use in hazardous locations:
Intrinsic Safety (Ex ia)
Non-Sparking (Ex nA)

4 0

TI258T/02/en
71073140

TR12

Function and system design

Measuring principle These resistance thermometers use a Pt100 temperature sensor according to IEC 60751. This temperature

sensor is a temperature-sensitive platinum resistor with a resistance of 100  at 0 °C (32 °F) and a temperature
coefficient  = 0.003851 °C

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 (1112 °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). For this reason, thin-film sensors are
generally only used for temperature measurements in ranges below 400 °C (932 °F).

-1

.

Measuring system

a0009647

Example of an application

A Built-in RTD assembly TR12 with head transmitter
B RIA261 Field display

– The display measures an analog measurement signal and indicates this on the display. The display is connected in a

4 to 20 mA current loop and also derives its supply from the loop. The voltage drop is almost negligible (< 2.5 V).
The dynamic internal resistance (load) makes sure that independently from the loop current, the maximum voltage
drop is never exceeded. The analog signal at the input is digitalized, analyzed, and shown in the rear illuminated
display. For details see Technical Information (see chapter "Documentation").

C Active barrier RN221N

– The RN221N active barrier (24 V DC, 30 mA) has a galvanically isolated output for supplying voltage to loop powered

transmitters. The power supply has a wide-range input for mains power, 20 to 250 V DC/AC,
50/60 Hz to be used in any electrical circuit. For details see Technical Information (see chapter "Documentation").

2 Endress+Hauser

TR12

Equipment architecture

a0009648

Equipment architecture of the Omnigrad M TR12

1 2Insert ( 3 mm, 0.12 in) with mounted head

transmitter, for example
Insert ( 6 mm, 0.24 in) with mounted ceramic

terminal block, for example
3 Terminal head L Immersion length
4 Protection armature IL Insertion length = L + 35 mm (1.38 in)
5 Compression fittings TA50, TA70 as process connection

The Omnigrad M TR12 RTD assemblies are modular. The terminal head serves as a connection module for the
protection armature in the process as well as for the mechanical and electrical connection of the measuring
insert. The actual RTD sensor element is fitted in and mechanically protected within the insert. The insert can
be exchanged and calibrated even during the process. Either ceramic terminal blocks or transmitters can be
fitted to the internal base washer. The TR12 can be fitted onto a pipe or tank through the use of a compression
fitting, which can be chosen from the most common models (see  ä 13).

Measurement range -200...+600 °C (-328...+1112 °F)

6

Various tip shapes - detailed information see chapter
’tip shape’:

6a

Reduced or tapered for inserts with  3 mm (0.12 in)

6b

Straight or tapered for inserts with  6 mm (0.24 in)

Endress+Hauser 3

Performance characteristics

Operating conditions Ambient temperature

Terminal head Temperature in °C (°F)

Without mounted head transmitter Depends on the terminal head used and the cable gland or fieldbus connec-

With mounted head transmitter -40 to 85 °C (-40 to 185 °F)

With mounted head transmitter and display -20 to 70 °C (-4 to 158 °F)

Process pressure

The maximum allowable process pressure depends on the process connection used. See the "Process
connection" section,  ä 13 for an overview of the process connections that can be used.

Maximum flow velocity

The highest flow velocity tolerated by the protection tube diminishes with increasing immersion length
exposed to the stream of the fluid. Detailed information may be taken from the figures below.

TR12

tor, see 'Terminal heads' section,  ä 9

Flow velocity depending on the immersion length
– Protection tube diameter 9 x 1 mm (0.35 in) ----------­– Protection tube diameter 12 x 2.5 mm (0.47 in) - - - - - -

A Medium water at T = 50 °C (122 °F) L Immersion length
B Medium superheated steam at T = 400 °C (752 °F) v Flow velocity

Shock and vibration resistance

3g / 10 to 500 Hz as per IEC 60751 (RTD-Thermometer)

a0008605-en

4 Endress+Hauser

TR12

Accuracy RTD corresponding to IEC 60751

Class max. Tolerances

RTD max. error type TF - range: -50 to +400 °C

Cl. A ± (0.15 + 0.002 · |t|

Cl. AA,
former 1/3
Cl. B

Cl. B ± (0.3 + 0.005 · |t|

RTD max. error type WW - range: -200 to +600 °C

Cl. A ± (0.15 + 0.002 · |t|

Cl. AA,
former
1/3 Cl. B

Cl. B ± (0.3 + 0.005 · |t|

(°C)

± (0.1 + 0.0017 · |t|

± (0.1 + 0.0017 · |t|

Temperature range Characteristics

1)

) -50 °C to +250 °C

1)

) 0 °C to +150 °C

1)

) -50 °C to +400 °C

1)

) -200 °C to +600 °C

1)

) 0 °C to +250 °C

1)

) -200 °C to +600 °C

a0008588-en

1) |t| = absolute value °C

!

Note!
For measurement errors in °F, calculate using equations above in °C, then multiply the outcome by 1.8.

Response time Tests in water at 0.4 m/s (1.3 ft/s), according to IEC 60751; 10 K temperature step change. Measuring probe

Pt100, TF/WW:

Protection tube

!

Diameter Response

time

9 x 1 mm (0.35 in) t

11 x 2 mm
(0.43 in)

12 x 2.5 mm
(0.47 in)

50

t

90

t

50

t

90

t

50

t

90

Note!
Response time for the sensor assembly without transmitter.

Reduced tip
 5.3 mm (0.2 in)

7.5 s
21 s

7.5 s
21 s

not available
not available

Tapered tip

 6.6 mm (0.26 in) or
 9 mm (0.35 in)

11 s
37 s

not available
not available

11 s
37 s

Straight tip

18 s
55 s

18 s
55 s

38 s
125 s

Insulation resistance Insulation resistance 100 M at ambient temperature.

Insulation resistance between each terminal and the sheath is measured with a voltage of 100 V DC.

Endress+Hauser 5

TR12

Self heating RTD elements are passive resistances that are measured using an external current. This measurement current

causes a self heating 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 self heating error is negligible when an Endress+Hauser

®

temperature transmitter (very small measurement current) is connected.

iTEMP

Calibration specifications Endress+Hauser provides comparison temperature calibration from -80 to +600 °C (-110 °F to 1112 °F) based

on the International Temperature Scale (ITS90). Calibrations are traceable to national and international
standards. The calibration report is referenced to the serial number of the thermometer. Only the measurement
insert is calibrated.

Insert-Ø:
6 mm (0.24 in) and 3 mm (0.12 in)

Temperature range without head transmitter with head transmitter

-80 °C to -40 °C (-110 °F to -40 °F) 200 (7.87)

-40 °C to 0 °C (-40 °F to 32 °F) 160 (6.3)

0 °C to 250 °C (32 °F to 480 °F) 120 (4.72) 150 (5.9)

250 °C to 550 °C (480 °F to 1020 °F) 300 (11.81)

550 °C to 650 °C (1020 °F to 1202 °F) 400 (15.75)

Material Protection tube, measuring insert.

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 Short form Recommended max.

AISI 316L/

1.4404

1.4435

AISI 316Ti/

1.4571

AISI310/

1.4841

X2CrNiMo17-12-2
X2CrNiMo18-14-3

X6CrNiMoTi17-12-2 700 °C (1292 °F)

X15 CrNiSi 25 20 1100 °C (2012 °F) • Good resistance to thermal, mechanical and corrosive influences

temperature for
continuous use in
air

650 °C (1200 °F)

Properties

1)

• Austenitic, stainless steel

• High corrosion resistance in general

• Particularly high corrosion resistance in chlorine-based 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

1)

• Properties comparable to AISI316L

• 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

Similar but better properties than AISI 316L
Less resistant against sulfurous gasses
Application areas:
– Garbage incinerators
– Industrial furnace construction
– Heating plant construction

Minimum insertion length IL in mm (in)

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.

6 Endress+Hauser

TR12

Transmitter specifications

TMT180

PCP

Pt100

Measurement accuracy 0.2 °C (0.36 °F), optional

Sensor current I  0.6 mA I  0.2 mA I  0.3 mA

Galvanic isolation (input/output) - Û = 2 kV AC

Transmitter long-term
stability

0.1 °C (0.18 °F) or 0.08%

% is related to the adjusted measurement range (the larger value applies)

 0.1 °C/year ( 0.18 °F / year) or  0.05% / year
Data under reference conditions; % relates to the set span. The larger value applies.

TMT181

PCP

Pt100, TC, , mV

0.2 °C (0.36 °F) or 0.08% 0.1 °C (0.18 °F)

TMT182

®

HART

Pt100, TC, , mV

TMT84 PA / TMT85 FF

Pt100, TC, , mV

Components

Family of temperature
transmitters

Thermometers fitted with iTEMP® transmitters are an installation ready complete solution to improve
temperature measurement by increasing accuracy and reliability, when compared to direct wired sensors, as
well as reducing both wiring and maintenance costs.

PC programmable head transmitter TMT180 and TMT181

They offer a high degree of flexibility, thereby supporting universal application with low inventory storage. The

®

transmitters can be configured quickly and easily at a PC. Endress+Hauser offers the ReadWin® 2000

iTEMP
configuration software for this purpose. This software can be downloaded free of charge at
www.readwin2000.com. More information can be found in the Technical Information (see
"Documentation" section).

®

TMT182 head transmitter

HART

®

HART

communication is all about easy, reliable data access and getting additional information about the

measurement point more inexpensively. iTEMP

®

system and provide painless access to numerous diagnostic information.
Configuration with a hand-held (Field Xpert SFX100 or DXR375) or a PC with configuration program
(FieldCare, ReadWin

®

2000) or configure with AMS or PDM. Details see Technical Information (see chapter

’Documentation’).

Type of transmitter Specification

iTEMP® TMT18x

PROFIBUS

R09-TMT182ZZ-06-06-xx-en-001

®

PA TMT84 head transmitter

• Material: Housing (PC), Potting (PUR)

• Terminals: Cable up to max.  2.5 mm
wire end ferrules

• Eyelets for easy connection of a HART
clips

• Degree of protection NEMA 4 (see also type of terminal head)

Details see Technical Information (see chapter ’Documentation’)

Universally programmable head transmitter with PROFIBUS
signals into a digital output signal. High accuracy over the complete ambient temperature range. Swift and easy
operation, visualization and maintenance using a PC directly from the control panel, e. g. using operating
software such as FieldCare, Simatic PDM or AMS.

transmitters integrate seamlessly into your existing control

2

/ 16 AWG (secure screws) or with

®

-handheld terminal with alligator

®

PA communication. Converting various input

Endress+Hauser 7

Benefits are: dual sensor input, highest reliability in harsh industrial environments, mathematic functions,
thermometer drift monitoring, sensor back-up functionality, sensor diagnosis functions and sensor-transmitter
matching using Callendar-Van Dusen coefficients. Details see Technical Information (see chapter
’Documentation’).

FOUNDATION Fieldbus™ TMT85 head transmitter

Universally programmable head transmitter with FOUNDATION Fieldbus™ communication. Converting
various input signals into a digital output signal. High accuracy over the complete ambient temperature range.
Swift and easy operation, visualization and maintenance using a PC directly from the control panel, e. g. using
operating software such as ControlCare from Endress+Hauser or the NI Configurator from National
Instruments.
Benefits are: dual sensor input, highest reliability in harsh industrial environments, mathematic functions,
thermometer drift monitoring, sensor back-up functionality, sensor diagnosis functions and sensor-transmitter
matching using Callendar-Van Dusen coefficients. Details see Technical Information (see chapter
’Documentation’).

Type of transmitter Specification

®

TMT84 and TMT85

iTEMP

Pluggable display TID10 as option

• Spring range L  5 mm (0.2"), see Pos. A

• Fixing elements for pluggable measured value display, see Pos. B

• Interface for contacting measured value display, see Pos. C

• Material (RoHS-compliant)
Housing: PC
Potting: PU

•Terminals:
Screw terminals (cable up to max.  2.5 mm
or spring terminals (e. g. from 0.25 mm
for flexible wires with wire-end ferrules with plastic ferrule)

• Degree of protection NEMA 4 (see also type of terminal head)

a0007301-en

Details see Technical Information (see chapter ’Documentation’)

• Displays the actual measured value and the measurement point identification

• Displays fault events in inverse color with channel ident and diagnostics code

• DIP-switches on the rear for hardware set-up, e. g. PROFIBUS
address

Note!

!

Display is only available with suitable terminal head with display window, e.g.
TA30

TR12

2

/ 16 AWG)

2

to 0.75 mm2/ 24 AWG to 18 AWG

®

PA bus

a0009955

8 Endress+Hauser

TR12

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.
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

• Max. temperature: 150 °C (300 °F)

• Material: aluminum, polyester powder coated
Seals: silicone

• Cable entry incl. glands: ½" NPT and M20x1.5, only thread: G ½",
plugs: M12x1 PA, 7/8" FF

• Protection armature connection: M24x1.5

• Head color: blue RAL 5012

• Cap color: grey RAL 7035

• Weight: 330 g (11.64 oz)

a0009820

TA30A with display window Specification

• Degree of protection: IP66/68

• Max. temperature: 150 °C (300 °F)

• Material: aluminum, polyester powder coated
Seals: silicone

• Cable entry incl. glands: ½" NPT and M20x1.5, only thread: G ½",
plugs: M12x1 PA, 7/8" FF

• Protection armature connection: M24x1.5

• Head color: blue RAL 5012

• Cap color: grey RAL 7035

• Weight: 420 g (14.81 oz)

• Head transmitter optional with TID10 display

a0009821

TA30D Specification

• Degree of protection: IP66/68

• Max. temperature: 150 °C (300 °F)

• Material: aluminum, polyester powder coated

Seals: silicone

• Cable entry incl. glands: ½" NPT and M20x1.5, only thread: G ½",

plugs: M12x1 PA, 7/8" FF

• 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 color: blue RAL 5012

• Cap color: grey RAL 7035

• Weight: 390 g (13.75 oz)

a0009822

Endress+Hauser 9

TA30P Specification

• Degree of protection: IP65

• Max. temperature: 120 °C (248 °F)

• Material: polyamide (PA), antistatic
Seals: silicone

• Cable entry: M20x1.5

• Head and cap color: black

• Weight: 135 g (4.8 oz)

• Types of protection for use in hazardous locations: Intrinsic Safety
(Ex ia)

a0012930

TA20B Specification

• Degree of protection: IP65

• Max. temperature: 80 °C (176 °F)

• Material: polyamide (PA)

• Cable entry: M20x1.5

• Head and cap color: black

• Weight: 80 g (2.82 oz)

®

marked

• 3-A

TR12

a0008663

TA21E Specification

• Degree of protection: IP65

• Max. temperature: 130 °C (266 °F) silicone, 100 °C (212 °F)
rubber (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 ½" or NPT ½"

• Head color: blue RAL 5012

• Cap color: grey RAL 7035

• Weight: 300 g (10.58 oz)

®

marked

• 3-A

a0008669

10 Endress+Hauser

TR12

TA20J Specification

• Degree of protection: IP66/IP67

• Max. temperature: 70 °C (158 °F)

• Material: 316L (1.4404) stainless steel, rubber seal under the
cover (hygienic design)

• 4 digits 7-segments LC display (loop powered with 4...20 mA
transmitter)

• Cable entry: ½" NPT, M20x1.5 or plug M12x1 PA

• Protection armature connection: M24x1.5 or ½" NPT

• Head and cap color: stainless steel, polished

• Weight: 650 g (22.93 oz) with display

• Humidity: 25 to 95%, no condensation

®

marked

• 3-A

The programming is executed through 3 keys at the bottom of the
display.

a0008866

* dimensions with optional display

TA20R Specification

• Degree of protection: IP66/67

• Max. temperature: 100 °C (212 °F)

• Material: SS 316L (1.4404) stainless steel

• Cable entry: ½" NPT, M20x1.5 or plug M12x1 PA

• Head and cap color: stainless steel

• Weight: 550 g (19.4 oz)

• LABS - free

®

marked

3-A

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

Protection tube All dimensions in mm (in).

40 (1.6)

35 (1.34)

50 (1.97)

20 (0.8)

40 (1.6) 20

(0.8)

T

R

M

W

Ø9x1

11x2(0.43)

(0.35)

Ø

5 (0.2)

Ø6.6 (0.26)

Ø5.3 (0.21)

Ø5.3 (0.21)

S

3.2

(0.13)

3 (0.12)

~3.5
(0.14)

6.1 (0.24)

3 (0.12)

3.2 (0.13)

3

(0.12)

Ø7 (0.28)

1-2.5 (0.04-0.1)

Ø9x1
(0.35)

Ø12x2.5
(0.47)

Ø9x1 (0.35)

0.43)Ø11x2 (

Ø12x2.5 (0.47)

Ø9x1
(0.35)

Ø9 (0.35)

TR12

a0009649

Dimensions of the Omnigrad M TR12

A Model with terminal block mounted  ID Insert diameter
B Model with head transmitter mounted IL Insertion length = L + 35 mm (1.38 in)
C Model with flying leads L Immersion length
D Compression fittings (see ’Process connection’)  X Protection tube diameter

Tip shape

a0008621

Available versions of protection tube tips (reduced, straight, tapered). Maximum surface roughness  Ra 0.8 μm (31.5 μin)

Pos. No. Tip shape, L = Immersion length Insert Diameter

M Reduced, L  50 mm (1.97 in)  3 mm (0.12 in)

R Reduced, L  30 mm (1.18 in)  3 mm (0.12 in)

SStraight  6 mm (0.24 in)

TTapered, L  70 mm (2.76 in)  3 mm (0.12 in)

W Tapered DIN43772-3G, L  90 mm (3.54 in)  6 mm (0.24 in)

12 Endress+Hauser

TR12

Weight From 0.5 to 2.5 kg (1 to 5.5 lbs) for standard options.

Process connection The process connection is the connection between the process and the thermometer. When using a

compression fitting the thermometer is pushed through a gland and fixed using a compression ferrule (can be
loosened) or a metal ferrule (cannot be loosened). The gland is either screwed or welded to the tank or pipe.

Process connection

Threaded compression fitting (TA50) Weld in adapter (TA70)

a0009650

Model F L in mm

(in)

TA50 G½" 47 (1.85) - 15 (0.6) SS316

G¾" 63 (2.48) - 20 (0.8) SS316

G1" 70 (2.76) - 25 (0.98) SS316

TA70 Weld-in 76 (3) 34 (1.34) - Viton

C in mm
(in)

B in mm
(in)

Material
ferrule

1)

2)

PTFE

1)

2)

PTFE

1)

2)

PTFE

® 2)

Max. process temperature Max. process pressure

500 °C (932 °F) 40 bar at 20 °C (580 psi at 68 °F)

200 °C (392 °F) 10 bar at 20 °C (145 psi at 68 °F)

500 °C (932 °F) 40 bar at 20 °C (580 psi at 68 °F)

200 °C (392 °F) 10 bar at 20 °C (145 psi at 68 °F)

500 °C (932 °F) 40 bar at 20 °C (580 psi at 68 °F)

200 °C (392 °F) 10 bar at 20 °C (145 psi at 68 °F)

180 °C (356 °F) 20 bar at 20 °C (290 psi at 68 °F)

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.

2) PTFE/Viton

®

compression ferrule: Can be reused, after loosening the fitting can be moved up and down the protection tube. With fully adjustable immersion

length.

More available versions see Technical information ’TA fittings & sockets’ (TI091t/02/en) and on request.

Spare parts • A thermowell is available as spare part TW12 (see Technical Information in chapter ’Documentation’).

• The RTD insert is available as spare part TPR100 (see Technical Information in chapter ’Documentation’).
If spare parts are required, refer to the following equation: Insertion length IL = L + 35 mm (1.38 in)

Spare part Material-No.

Gasket set M24x1.5, aramid+NBR (10 pieces) 60001329

Silopren gland for TA70,  11 mm (0.43 in), 10 pieces 60011606

Silopren gland for TA70,  9 mm (0.35 in), 10 pieces 60011607

Endress+Hauser 13

Wiring

Wiring diagrams Type of sensor connection

Head mounted transmitter TMT18x (single input)

TR12

T09-TH1112xx-04-xx-XX-ae-000

Head mounted transmitter TMT84 and TMT85 (dual input)

Terminal block mounted

a0008848-en

a0008591-en

14 Endress+Hauser

TR12

Installation conditions

Orientation No restrictions.

Installation instructions

!

a0009651

Installation examples

A - B: In small nominal bore pipes the tip should reach or extend slightly past the center line of the pipe (= L).
C - D: Angled installation.

The immersion length of the thermometer influences the accuracy. If the immersion length is too small then
errors in the measurement are caused by heat conduction via the process connection and the container wall.
If installing into a pipe then the immersion length must be half of the pipe diameter, ideally.

• Installation possibilities: Pipes, tanks or other plant components

• Minimum immersion length = 80 to 100 mm (3.15 to 3.94 in)
The immersion length should correspond to at least 8 times of the thermowell diameter. Example:
Thermowell diameter 12 mm (0.47 in) x 8 = 96 mm (3.8 in). A standard immersion length of 120 mm (4.72
in) is recommended

• ATEX certification: Always take note of the installation regulations!

Note!
When operating in small nominal bore pipes it must be guaranteed that the thermowell tip is extending far
enough into the process to reach out past the pipe center line (see Pos. A and B). A further solution could be
an angled (tilted) installation (see Pos. C and D). When determining the immersion length all thermometer
parameters and the process to be measured must be taken into account (e.g. flow velocity, process pressure).

Endress+Hauser 15

Neck tube length The neck tube is the part between the process connection and the housing.

As illustrated in the following figure, the neck tube length may influence the temperature in the terminal head.
It is necessary that this temperature is kept within the limit values defined in the chapter "Operating
conditions".

Heating of the terminal head consequent to the process temperature.
Temperature in terminal head = ambient temperature 20 °C (68 °F) + T

TR12

a0008623-en

Certificates and approvals

CE Mark The device meets the legal requirements of the EC directives if applicable. Endress+Hauser confirms that the

device has been successfully tested by applying the CE mark.

Hazardous area approvals 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. If required, please request copies.

Other standards and
guidelines

PED approval The thermometer complies with paragraph 3.3 of the Pressure Equipment Directive (97/23/CE) and is not

Material certification The material certificate 3.1 (according to standard EN 10204) can be directly selected from the sales structure

• IEC 60529:
Degrees of protection by housing (IP-Code).

• IEC 61010-1:
Safety requirements for electrical measurement, control and laboratory instrumentation.

• IEC 60751:
Industrial platinum resistance thermometer

• DIN43772:
Thermowells

• DIN EN 50446, DIN 47229:
Terminal heads

• IEC 61326-1:
Electromagnetic compatibility (EMC requirements)

marked separately.

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 simplified 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.

16 Endress+Hauser

TR12

Test on thermowell Thermowell pressure tests are carried out in accordance with the specifications in the DIN 43772 standard.

With regards to thermowells with tapered or reduced tips that do not comply with this standard these are tested
using the pressure of corresponding straight thermowells. Sensors certified for use in Ex Zones, are always
tested to pressures according to the same criteria. Tests according to other specifications can be carried out on
request. Dye penetration tests verify the absence of cracks on the thermowell welding.

Test report and calibration 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 or DKD calibration) 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.

Ordering information

Product structure This information provides an overview of the order options available. The information is not exhaustive,

however, and may not be fully up to date. More detailed information is available from your local
Endress+Hauser representative.

RTD thermometer TR12

Approval:

A Non-hazardous area
B ATEX II 1 GD EEx ia IIC
E ATEX II 1/2 GD EEx ia IIC
G ATEX II 1 G EEx ia IIC
H ATEX II 3 GD EEx nA II
K TIIS Ex ia IIC T4
L TIIS Ex ia IIC T6

Head; Cable Entry:

B TA30A Alu, IP66/IP68; M20
C TA30A Alu, IP66/IP68; NPT ½"
D TA30A Alu, IP66/IP67; M12 plug PA
E TA21E Alu, screw cap IP65; M12 plug PA
F TA30A Alu+display, IP66/IP68; M20
G TA30A Alu+display, IP66/IP68; NPT ½"
H TA30A Alu+display, IP66/IP67; M12 plug PA
J TA20J 316L, IP66/IP67; M20
K TA20J 316L, + display, IP66/IP67; M20
M TA20J 316L, IP66/IP67; M12 plug PA
N TA20R 316L, screw cap IP66/IP67; M20 silicone free
O TA30D Alu, high cover, IP66/IP68; M20
P TA30D Alu, high cover, IP66/IP68; NPT ½"
Q TA30D Alu, IP66/IP67; M12 plug PA
R TA20R 316L screw cap IP66/IP67; M20
S TA20R 316L screw cap IP66; M12 plug
T TA30A Alu, IP66/IP67; 7/8" plug FF
U TA30A Alu+display, IP66/IP67; 7/8" plug FF
V TA30D Alu, IP66/IP67; 7/8" plug FF
Z TA30P Alu, high cover; IP65; M20
7 TA20B PA black, IP65; M20

Pipe Diameter; Material:

A 9 mm; 316L, DIN43772-2
B 11 mm; 316L, DIN43772-2
D 9 mm; 316Ti, DIN43772-2
E 11 mm; 316Ti, DIN43772-2
F 12 mm; 316Ti, DIN43772-2/3
G 15 mm; 310

Process Connection; Ferrule:

A TA50, R ½"; PTFE, JIS B 0203
B TA50, R ¾"; PTFE, JIS B 0203
0 Not needed
1 TA50, G½"; 316

Endress+Hauser 17

Process Connection; Ferrule:

2 TA50, G½"; PTFE
3 TA50, G1"; 316
4 TA50, G1"; PTFE
5 TA70, 30x34; Viton
6 TA50, G¾"; 316
7 TA50, G¾"; PTFE

Tip Shape:

M Reduced
R Reduced, short
S Straight
T Tapered
W Tapered DIN43772-3

Immersion Length L:

A 125 mm
B 180 mm
C 240 mm
D 280 mm
E 340 mm
F 370 mm
G 400 mm
K 520 mm
L 490 mm
M 700 mm
N 1000 mm

X ..... mm

Y ..... mm, as specified

1 50 mm
2 60 mm
3 70 mm
4 80 mm
5 100 mm

Head Transmitter; Range:

B TMT84 PA
C Terminal block
D TMT85 FF
F Flying leads
G TMT181 (PCP); temp. range to be specified
H TMT182 (HART); temp. range to be specified
K TMT182 (HART), Diagnostics, advanced
2 TMT180-A21 fix; 0.2 K, temp. range to be specified, Span limit -200/650 °C
3 TMT180-A22 fix; 0.1 K, temp. range to be specified, Span limit -50/250 °C
4 TMT180-A11 PCP; 0.2 K, temp. range to be specified, Span limit -200/650 °C
5 TMT180-A12 PCP; 0.1 K, temp. range to be specified, Span limit -50/250 °C

RTD; wire; meas. range; class; validity:

A 1x Pt100 WW; 3; -200/600 °C; A: -200/600 °C
B 2x Pt100 WW; 3; -200/600 °C; A: -200/600 °C
C 1x Pt100 WW; 4; -200/600 °C; A: -200/600 °C
F 2x Pt100 WW; 3; -200/600 °C; 1/3B; 0/250 °C
G 1x Pt100 WW; 3; -200/600 °C; 1/3B; 0/250 °C
Y Special version, to be specified
2 1x Pt100 TF; 3; -50/400 °C; A; -50/250 °C increas. vibr. resistance
3 1x Pt100 TF; 4; -50/400 °C; A; -50/250 °C increas. vibr. resistance
6 1x Pt100 TF; 3; -50/400 °C; 1/3B; 0/150 °C increas. vibr. resistance
7 1x Pt100 TF; 4; -50/400 °C; 1/3B; 0/150 °C increas. vibr. resistance

Material Certificate:

0 Not needed
1 EN10204-3.1 Material
2 EN10204-3.1 Material, shortform

Test Report:

A Internal hydrost. pressure test
0 Not needed

TR12

Factory Test:

A 0, 100 °C, 1x RTD
B 0, 100 °C, 1x RTD+TMT

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TR12

Factory Test:

C 0, 100 °C, 2x RTD
E 0, 100, 150 °C, 1x RTD
F 0, 100, 150 °C, 1x RTD+TMT
G 0, 100, 150 °C, 2x RTD
K 0 °C, 2x variable, 1x RTD, range 0... +250 °C
L 0 °C, 2x variable, 1x RTD+TMT, range 0... +250 °C
M 0 °C, 2x variable, 2x RTD, range 0... +250 °C
0 Not needed
1 Inspection 1x RTD
2 Inspection 1x RTD+TMT

TR12-  Order code (complete)

Documentation

Technical Information:

• RTD Insert for temperature sensor Omniset TPR100 (TI268t/02/en)

• Thermowell for temperature sensors Omnigrad M TW12 (TI263t/02/en)

• TA fittings and sockets omnigrad TA50, TA55, TA60, TA70, TA75 (TI091t/02/en)

• Temperature head transmitter:
–iTEMP
–iTEMP® Pt TMT180 (TI088r/09/en)
–iTEMP® HART® TMT182 (TI078r/09/en)
–iTEMP
–iTEMP® TMT85 FF (TI134r/09/en)

Hazardous area supplementary documentation:

• Omnigrad TRxx RTD Thermometer ATEX II1GD or II 1/2GD (XA072r/09/a3)

• Omnigrad TRxx, Omniset TPR100, TET10x, TPC100, TEC10x ATEX II 3GD EEx nA (XA044r/09/a3)

®

PCP TMT181 (TI070r/09/en)

®

TMT84 PA (TI138r/09/en)

Application example Technical Information:

• Field display RIA261 (TI083r/09/en)

• Active barrier with power supply RN221N (TI073R/09/en)

Endress+Hauser 19

TR12

Instruments International

Endress+Hauser
Instruments International AG
Kaegenstrasse 2
4153 Reinach
Switzerland

Tel. [phone]
Fax [phone]
www.endress.com
[e-mail]

TI258T/02/en/03.10
71073140
FM+SGML 6.0 ProMoDo