TI01707T/09/EN/03.24-00
71657871
2024-03-31

Products

Solutions

ServicesTechnical Information
iTHERM ModuLine TM151
Innovative, highly modular and robust RTD or TC
thermometer for a wide range of industrial
applications

Complete with barstock thermowell or to be usedwith onsite thermowell
Application• For universal use• Measuring range: –200 to +1 100 °C (–328 to +2 012 °F)• Pressure range up to 500 bar (7 252 psi)
• Vibration-resistant sensor elements up to 60g• Improved ease of maintenance (sensor replacement without process shutdown),easy and safe recalibration of the measuring point
Head transmitters
All Endress+Hauser transmitters are available with enhanced measurement accuracy
and reliability compared to directly wired sensors. Easily customized to themeasuring task by choosing the outputs and communication protocols:• Analog output 4 to 20 mA, HART®
HART® SIL transmitter, optional• PROFIBUS® PA, FOUNDATION Fieldbus ™, PROFINET over Ethernet-APL; IO-Link®

Your benefits• Second process seal with failure indication offering valuable device health status
information• iTHERM QuickSens: fastest response times of 1.5 s for optimum process control• iTHERM StrongSens: unsurpassed vibration resistance (≤ 60g) for ultimate plantsafety• iTHERM QuickNeck – cost and time savings thanks to simple, tool-freerecalibration• Bluetooth® connectivity (optional)• International certification: explosion protection according to ATEX, IECEx, CSA
C/US and CCC

iTHERM ModuLine TM151

Table of contents
Function and system design . . . . . . . . . . . . . . . . . . . 3

iTHERM ModuLine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Modular design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Measured variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Measuring range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Family of temperature transmitters . . . . . . . . . . . . . . . . . 9

Terminal assignment . . . . . . . . . . . . . . . . . . . . . . . . . .
Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Surge arrester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pre-defined versions . . . . . . . . . . . . . . . . . . . . . . . . . .

61

Certificates and approvals . . . . . . . . . . . . . . . . . . .

65

Test on thermowell . . . . . . . . . . . . . . . . . . . . . . . . . . .

65

Ordering information . . . . . . . . . . . . . . . . . . . . . . . 66
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Service-specific accessories . . . . . . . . . . . . . . . . . . . . . .

66

Supplementary documentation . . . . . . . . . . . . . . .

67

10
15
15
20

Performance characteristics . . . . . . . . . . . . . . . . . . 20
Reference conditions . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum measurement error . . . . . . . . . . . . . . . . . . . .
Influence of ambient temperature . . . . . . . . . . . . . . . . .
Self-heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Insulation resistance . . . . . . . . . . . . . . . . . . . . . . . . . .

20
21
21
22
22
23

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation instructions . . . . . . . . . . . . . . . . . . . . . . . .

23
23

Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . .

24

Ambient temperature range . . . . . . . . . . . . . . . . . . . . .
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . .
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Climate class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . .
Shock and vibration resistance . . . . . . . . . . . . . . . . . . . .
Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . .

24
24
24
24
24
24
24

Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Process temperature range . . . . . . . . . . . . . . . . . . . . . . 24
Process pressure range . . . . . . . . . . . . . . . . . . . . . . . . . 25

Mechanical construction . . . . . . . . . . . . . . . . . . . .

Design, dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermowell/thermometer connections . . . . . . . . . . . . . .
Process connections . . . . . . . . . . . . . . . . . . . . . . . . . . .
Geometry of parts in contact with medium . . . . . . . . . . . .
Inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Surface roughness . . . . . . . . . . . . . . . . . . . . . . . . . . .
Terminal heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Extension neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

25

25
34
34
36
38
48
48
49
49
57

Endress+Hauser

iTHERM ModuLine TM151

Function and system design
This thermometer is part of the product line of modular thermometers for industrial applications.

iTHERM ModuLine

Differentiating factors when selecting a suitable thermometer:
Thermowell

Direct contact - without thermowell

Thermowell, welded

Device type

Thermowell from barstock
material

MetricThermometer

TM151
TM121

TM111

TM101

A0039102

A0038281

TM131

A0038195

A0038194

A0052360

FLEX
segment

F

Properties

Excellent priceperformance ratio

Hazardous
area-

Endress+Hauser

E
iTHERM StrongSens andQuickSens inserts

-

F

E

Excellent price• iTHERM StrongSens andperformance ratio
QuickSens insertswith thermowell• QuickNeck• Fast response times• Dual-seal technology• Dual-compartment
housing--

E• iTHERM StrongSens andQuickSens inserts• QuickNeck• TwistWell• Fast response times• Dual-seal technology• Dual-compartment housing-

3

iTHERM ModuLine TM151

Measuring principle

Resistance thermometers (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):Wire Wound, WW In these thermometers, a double coil of fine, high-purity
platinum wire is accommodated in a ceramic support. This support 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 andis comparatively sensitive to vibrations.
• Thin-film platinum resistance thermometers(Thin Film, 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 measuringresistance. 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 class A as per
IEC 60751 can only be observed with TF sensors at temperatures up to approx. 300 °C (572 °F).
Thermocouples (TC)
Thermocouples are comparatively simple, robust temperature sensors which use the Seebeck effectfor 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 orelectromotive force (emf). Its magnitude depends on the type of conducting materials and thetemperature difference between the "measuring point" (the junction of the two conductors) and the"cold junction" (the open conductor ends). Accordingly, thermocouples primarily only measuredifferences in temperature. The absolute temperature at the measuring point can be determinedfrom these if the associated temperature at the cold junction is known or is measured separately andcompensated 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.

Measuring system

Endress+Hauser offers a complete portfolio of optimized components for the temperature measuring
point – everything you need for the seamless integration of the measuring point into the overall
facility. These include:• Power supply unit/barrier• Display units• Surge arrester
For more information, see the brochure "System Components - Solutions for a Complete
Measuring Point" (FA00016K)

4

Endress+Hauser

iTHERM ModuLine TM151

PLC

FieldCare

Commubox

1

2

3

4

5
A0035235

1
1
2

3

4

5

Endress+Hauser

Example of application, measuring point layout with additional Endress+Hauser components
Installed iTHERM thermometer with HART® communication protocol
RIA15 loop-powered process indicator - The process indicator is incorporated into the current loop anddisplays the measuring signal or the HART® process variables in digital form. The process display unit does
not require an external power supply. It is powered directly from the current loop.
Active barrier RN42 - The RN42 (17.5 VDC, 20 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 24 to 230 V AC/DC, 0/50/60 Hz, which means that it can be used in all international power grids.
Communication examples: HART® Communicator (handheld terminal), FieldXpert, Commubox FXA195 for
intrinsically safe HART® communication with FieldCare via the USB interface, Bluetooth® technology with
SmartBlue App.
FieldCare is a FDT-based plant asset management tool from Endress+Hauser, for details see section"accessories".

5

iTHERM ModuLine TM151

Modular design
DesignOptions
1: Terminal
head

Variety of terminal heads made of aluminum, polyamide or stainlesssteel
benefits:
 Your• Optimum terminal access thanks to low housing edge ofbottom section:• Easier to use• Lower installation and maintenance costs• Optional display: local process display for added reliability

1

2: Wiring,
electricalconnection,
output signal• Ceramic terminal block• Flying leads• Head transmitter: 4 to 20 mA, HART®, PROFIBUS® PA,
FOUNDATION™ Fieldbus; IO-Link®, Ethernet-APL (single-channel
or dual-channel)• Attachable display

3: Plug or cablegland• Polyamide or brass cable glands• M12 plug, 4-pin/8-pin: PROFIBUS® PA, Ethernet-APL, IO-Link®
• 7/8" plug: PROFIBUS® PA, FOUNDATION™ Fieldbus

4: Removable
extension neck

Different extension neck options are available.
• Extension neck according to DIN 43772• QuickNeck• Extension neck with second process seal
• Nipple, nipple-union, or nipple-union-nipple

2
3

4

8

benefits:
 YouriTHERM QuickNeck: tool-free removal of the insert:• Saves time/costs on frequently calibrated measuring points• Wiring mistakes avoided

5

6

5: Lagging

The lagging of the thermowell provides space between thethermometer connection and the process connection.

6: Processconnection

Variety of process connections including threads, flanges according to
EN or ASME standard, socket weld

7: Thermowell

Versions with and without thermowell (for existing thermowells).

8c

U
7
8a

• Various diameters• Various materials• Various tip shapes (straight, tapered or stepped)

8b
A0051645

6

8: Insert with:
8a: iTHERM
QuickSens
8b: iTHERM
StrongSens
8c: Centralspring-loaded
insertSensor models: RTD - wire wound (WW), thin-film sensor (TF) or
thermocouples type K, J or N. Insert diameter ⌀3 mm (0.12 in) or⌀6 mm (0.24 in), depending on thermowell tip or selected
thermometer
benefits:
 Your• iTHERM QuickSens - insert with the world's fastest responsetime:• Fast, highly accurate measurements, delivering maximum
process safety and control• Quality and cost optimization• iTHERM StrongSens - insert with unbeatable durability:• Vibration resistance ≤ 60g: lower life cycle costs thanks tolonger operating life and high plant availability• Automated, traceable production: top quality andmaximum process safety

Endress+Hauser

iTHERM ModuLine TM151

E
E
E

T

U

1

A

B

C

D
A0051655

Endress+Hauser

2Different thermowell versions available

1
A
B
C
D

For installation in a separate thermowell
Flanged, references acc. to ASME/Universal
With thread, references acc. to ASME/Universal
For weld-in, references acc. to ASME/Universal
Socket weld, references acc. to ASME/Universal

E
TU

Length of removable extension neck - can be replaced (DIN extension neck, second process seal, nipple, etc.)
Length of thermowell lagging - lagging or extension neck, integral part of the thermowell
Immersion length - length of the lower thermometer section in the process medium, usually from the processconnection

7

iTHERM ModuLine TM151

E

T

U
U

E

G

M

T
A0052349

38Different thermowell versions available

E
G
M
T

Flanged, references acc. to NAMUR
For weld-in, references acc. to DIN
Flanged, references acc. to DIN
Flanged, iTHERM TwistWell

E
TU

Length of removable extension neck - can be replaced (DIN extension neck, second process seal, nipple, etc.)
Length of thermowell lagging - lagging or extension neck, integral part of the thermowell
Immersion length - length of the lower thermometer section in the process medium, usually from the processconnection

Endress+Hauser

iTHERM ModuLine TM151

Input
Measured variable

Temperature (temperature linear transmission behavior)

Measuring range

Depends on the type of sensor used
Sensor typeMeasuring range

Pt100 thin-film (TF), basic
iTHERM QuickSens, fast response–50 to +200 °C (–58 to +392 °F)

Pt100 thin film (TF), standard–50 to +400 °C (–58 to +752 °F)

Pt100 thin film (TF), iTHERM
StrongSens, vibration-resistant≤ 60g–50 to +500 °C (–58 to +932 °F)

Pt100 wire wound (WW), extended –200 to +600 °C (–328 to +1 112 °F)
measuring range
Thermocouple TC, type J–40 to +750 °C (–40 to +1 382 °F)

Thermocouple TC, type K–40 to +1 100 °C (–40 to +2 012 °F)

Thermocouple TC, type N

OutputOutput signal

Generally, the measured value can be transmitted in one of two ways:• Directly-wired sensors - sensor measured values forwarded without a transmitter.
• Via all common protocols by selecting an appropriate Endress+Hauser iTEMP transmitter. All thetransmitters listed below are mounted directly in the terminal head and wired with the sensory
mechanism.

Family of temperaturetransmitters

Thermometers fitted with iTEMP transmitters are an installation-ready complete solution to
improve temperature measurement by significantly increasing accuracy and reliability, whencompared to direct wired sensors, as well as reducing both wiring and maintenance costs.
4 to 20 mA 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.
HART® 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 alsotransfers resistance and voltage signals using HART® communication. Swift and easy operation,
visualization and maintenance using universal configuration software like FieldCare, DeviceCare or
FieldCommunicator 375/475. Integrated Bluetooth® interface for the wireless display of measured
values and configuration via Endress +Hauser SmartBlue (app), optional.
PROFIBUS® PA head transmitters
Universally programmable head transmitter with PROFIBUS® PA communication. Conversion ofvarious input signals into digital output signals. High measurement accuracy over the complete
ambient temperature range. PROFIBUS PA functions and device-specific parameters are configured
via fieldbus communication.
FOUNDATION Fieldbus™ head transmitters
Universally programmable head transmitter with FOUNDATION Fieldbus™ communication.
Conversion of various input signals into digital output signals. High measurement accuracy over thecomplete ambient temperature range. All transmitters are approved for use in all the main processcontrol systems. The integration tests are performed in Endress+Hauser's 'System World'.
Head transmitter with PROFINET® and Ethernet-APL
The temperature transmitter is a 2-wire device with two measuring inputs. The device not onlytransfers converted signals from resistance thermometers and thermocouples, it also transfers
resistance and voltage signals using the PROFINET® protocol. Power is supplied via the 2-wireEndress+Hauser

9

iTHERM ModuLine TM151

Ethernet connection according to IEEE 802.3cg 10Base-T1. The transmitter can be installed as an
intrinsically safe electrical apparatus in Zone 1 hazardous areas. The device can be used for
instrumentation purposes in the terminal head form B (flat face) according to DIN EN 50446.
Head transmitter with IO-Link®
The temperature transmitter is an IO-Link® device with a measurement input and an IO-Link®
interface. It offers a configurable, simple and cost-effective solution thanks to digital communication
via IO-Link®. The device is mounted in a terminal head form B (flat face) as per DIN EN 5044.
Advantages of the iTEMP transmitters:• Dual or single sensor input (optionally for certain transmitters)• Attachable 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 based on the Callendar van Dusen coefficients (CvD).

Power supply
The sensor connection wires are equipped with terminal lugs. The nominal diameter of thecable lug is 1.3 mm (0.05 in)Terminal assignment

Type of sensor connection RTD
1
RD

R3

RD

R3

R1

3

2
R1

R2
R1

B5

BK

R2

RD

B6

BK

G4
B5

WH

W5

RD

WH

W3

G4

R3

RD

R1

R3

R1

RD

W6

W4 W4

WH

W6

WH

W3

B6

W5

R1

YE

4
A0045453

4
1
2
3
4

Mounted ceramic terminal block3-wire2x3-wire
4-wireOutside screw

2

1
6

RD
RD

+

5
1+

+

-2-

4

WH
WH

3

3
A0045464

5
1
2
3

10

Head mounted transmitter TMT7x or TMT31 (single input)
Sensor input, RTD, 4-, 3- and 2-wirePower supply/bus connection
Display connection/CDI interface

Endress+Hauser

iTHERM ModuLine TM151

C/Q

1
RD

6

L+

RD

5

WH

4

L3

WH

2
A0052495

6

Head-mounted transmitter TMT36 (single input)

1
RTD sensor input: 4-, 3- and 2-wire2
Display connection
L+ 18 to 30 VDC power supply
L- 0 VDC power supply
C/Q IO-Link or switch output

2

1

3

BK
BK

RD

7
6

RD
5

WH
YE

WH

1
+
2
-

4
3

4
A0045466

7
1
2
3
4

Head-mounted transmitter TMT8x (dual sensor input)
Sensor input 1, RTD, 4- and 3-wireSensor input 2, RTD, 3-wire
Fieldbus connection and power supply
Display connection

Mounted field transmitter: Fitted with screw terminals

Endress+Hauser

11

iTHERM ModuLine TM151

1

WH

WH

2

RD RD

3

4

2

GN
1
5

4

S1

3

BK

+

6

-

3+

3
+

S2

+

!-

-

-

BK

A0045732

Sensor input 1, RTD: 3- and 4-wireSensor input 2, RTD: 3-wire
Field transmitter power supply and analog output 4 to 20 mA or fieldbus connection

+

1
2
3

TMT162 (dual input)

2

3

S1

4

4

3

RD

3+ -

2

RD

+
!
-

1

5

4

-

8

WH
WH
1
A0045733

9
1
2
3
4
5

12

TMT142B (single input)
Sensor input RTD
Power supply field transmitter and analog output 4 to 20 mA, HART® signal
2-wire3-wire4-wireEndress+Hauser

iTHERM ModuLine TM151

Type of sensor connection thermocouple (TC)
2 x TC

1 x TC
-

+

-

-

+

+

A0012700

 10

Mounted ceramic terminal block

2

1

TC

TC

3

7
6
5

1+

24
3

4
A0045474

 11
1
2
3
4

Head-mounted transmitter TMT8x (dual sensor input)

Sensor input 1
Sensor input 2
Fieldbus connection and power supply
Display connection

1
6

+
1+
5

+
-

4

-2-

3

3

2
A0045353

 12
1
2
3

Endress+Hauser

Head-mounted transmitter TMT7x (single input)

Sensor input
Power supply and bus connection
Display connection and CDI interface

13

iTHERM ModuLine TM151

1
3
3

4

1

5

2

4

3+

S1

3

+

6

2

S2

-

-

+

!
-

1

2
TC

TC
2

+
-

1

6

5

A0045636

 13
1
2
3

Mounted field transmitter TMT162 or TMT142B

Sensor input 1
Sensor input 2 (not TMT142B)
Supply voltage for field transmitter and analog output 4 to 20 mA or fieldbus communication

Thermocouple wire colors
As per IEC 60584

As per ASTM E230

• Type J: black (+), white (-)• Type K: green (+), white (-)• Type N: pink (+), white (-)• Type J: white (+), red (-)• Type K: yellow (+), red (-)• Type N: orange (+), red (-)

Integrated overvoltage protection
Overvoltage protection is optionally available 1). The module protects the electronics from damage
from overvoltage. Overvoltage occurring in signal cables (e.g. 4 to 20 mA, communication lines(fieldbus systems) and power supply is diverted to ground. The functionality of the transmitter is notaffected as no problematic voltage drop occurs.
Connection data:
Maximum continuous voltage (rated voltage)

UC = 36 VDC

Nominal current

I = 0.5 A at Tamb. = 80 °C (176 °F)

Surge current resistance• Lightning surge current D1 (10/350 µs)• Nominal discharge current C1/C2 (8/20 µs)

1)14• Iimp = 1 kA (per wire)• In = 5 kA (per wire)
In = 10 kA (total)

Temperature range–40 to +80 °C (–40 to +176 °F)

Series resistance per wire

1.8 Ω, tolerance ±5 %Available for the field transmitters with HART® 7 communication

Endress+Hauser

iTHERM ModuLine TM151

1
3

4

1

5

2

4

-

3+

S1

3

+

6

2

S2

-

+
-

+

!
-

-

+

3
A0045614

 14
1
2
3

Electrical connection of surge arrester

Sensor connection 1
Sensor connection 2
Bus terminator and power supply

The device must be connected to the potential equalization via the external ground clamp. The
connection between the housing and the local ground must have a minimum cross-section of
4 mm2 (13 AWG). All ground connections must be secured tightly.
Terminals

iTEMP head transmitters fitted with push-in terminals unless screw terminals are explicitly selected,
the second process seal is chosen or a double sensor is installed.

Cable entries

See "Terminal heads" section.
The cable entries must be selected during the configuration of the device. Different terminal heads
offer different possibilities with regard to threads and the number of available cable entries.
Connectors
Endress+Hauser offers a wide variety of connectors for the simple and fast integration of thethermometer into a process control system. The following tables show the PIN assignments of thevarious plug connector combinations.
We do not recommend connecting thermocouples directly to connectors. The direct connection
to the pins of the plug might generate a new 'thermocouple' which influences the accuracy ofthe measurement. Therefore we do not connect thermocouples directly to connectors. The
thermocouples are connected in combination with a transmitter.
Abbreviations#1

Order: first transmitter/insert#2

Order: second
transmitter/insertiInsulated. Wires marked 'i' are not connected and are
insulated with heat shrink tubes.

YE

Yellow

GND

Grounded. Wires marked 'GND' are connected to theinternal grounding screw in the terminal head.

RD

Red

BN

Brown

WH

White

GNYE

Green-yellow

PK

Pink

BU

Blue

GN

Green

GY

Gray

BK

Black

Terminal head with one cable entry
1x PROFIBUS® PA

Plug
Plug thread
PIN number

Endress+Hauser

M12
1

2

1x FOUNDATION™ Fieldbus(FF)

1x PROFINET® and EthernetAPL

7/8"

M12

7/8"
3

4

1

2

3

4

1

2

3

4

1

2

3

4

15

iTHERM ModuLine TM151

1x FOUNDATION™ Fieldbus(FF)

1x PROFIBUS® PA

Plug

1x PROFINET® and EthernetAPL

Electrical connection (terminal head)
Flying leads and TC

Not connected (not insulated)

3-wire terminal block(1x Pt100)

WHRD

4-wire terminal block(1x Pt100)
6-wire terminal block(2x Pt100)

RD(#1) 1

PA

)

RD
(#1)

+

i

+(#1) +(#2)

1x TMT PROFIBUS®
PA
2x TMT PROFIBUS®

WH

WH
WH

RD

RD

WH

WH
RD

WH

RD

WH

WH
WH

+

WH (#1)

RD
(#1)

RD
(#1)

-

i

+

i

-(#1)

(#2)

-

GND

i

+(#1) +(#2)

+

-(#1)

WH (#1)

RD
(#1)

RD
(#1)

-

i

+

i

-(#1)

(#2)

i

2)

+(#1)

+(#1) +(#2)

+

-(#1)

-(#2)

2x TMT FF

-(#1)

+(#1)

GND

i

1

2

1 BN
2 GNYE
3 BU
4 GY

-(#1)

-(#2)

APL
APL
signal signal+

Cannot be combined

1

3

2

4

1 BN
2 GNYE
3 BU
4 GY

A0018929

1

3

2

4

1 BU
2 BN
3 GY
4 GNYE

A0018930

GND

APL
APL
signalsignal+- (#1)(#1)

2x TMT PROFINET®

3i

Cannot be combined

Cannot be combined

4+(#1) +(#2)-

Cannot be combined+

PIN position and color
code

i

-

Cannot be combined

i

2)

+

WH (#1)

-

GND

WH

RD

WH (#1)1x TMT FF

1x TMT PROFINET®

1)
2)

WH
RD

1x TMT 4 to 20 mA
or HART®
2x TMT 4 to 20 mA
or HART® in theterminal head with ahigh cover

RD

4

3

1

2

-

1 RD
2 GN

A0018931

A0052119

Second Pt100 is not connected
If using a head without a grounding screw, e.g. plastic housing TA30S or TA30P, insulated 'i' instead of grounded GND

Terminal head with one cable entryPlug

4-pin/8-pin

Plug thread

M12

PIN number

1

2

3

4

5

6

7

8

Electrical connection (terminal head)
Flying leads and TC

Not connected (not insulated)

3-wire terminal block (1x Pt100)
4-wire terminal block (1x Pt100)

WH
RD

RD

WH

6-wire terminal block (2x Pt100)

i

WH
WH

BK

BK

1x TMT 4 to 20 mA or HART®
2x TMT 4 to 20 mA or HART® in theterminal head with a high cover
1x TMT PROFIBUS® PA

16

YE
i

+(#1)

i

-(#1)

i

+(#2)

i

-(#2)

i

Cannot be combined

Endress+Hauser

iTHERM ModuLine TM151

Plug

4-pin/8-pin

2x TMT PROFIBUS® PA
1x TMT FF

Cannot be combined

2x TMT FF
1x TMT PROFINET®

Cannot be combined

2x TMT PROFINET®

Cannot be combined
4

3

PIN position and color code
1

2

2 BN

3 GN

1 BN
2 GNYE
3 BU
4 GY

1 WH
8 RD
7 BU

4 YE
5 GY
6 PK

A0018929

A0018927

Terminal head with one cable entry
Plug

1x IO-Link®, 4-pin

Plug thread

M12

PIN number

1

2

3

4

Electrical connection (terminal head)
Flying leads

Not connected (not insulated)

3-wire terminal block (1x Pt100)RDi

4-wire terminal block (1x Pt100)

RD

WH

Cannot be combined

6-wire terminal block (2x Pt100)
1x TMT 4 to 20 mA or HART®
Cannot be combined

2x TMT 4 to 20 mA or HART® in the terminal head with ahigh cover
1x TMT PROFIBUS® PA

Cannot be combined

2x TMT PROFIBUS® PA
1x TMT FF

Cannot be combined

2x TMT FF
1x TMT PROFINET®

Cannot be combined

2x TMT PROFINET®
1x TMT IO-Link®

L+

-

L-

C/Q

2x TMT IO-Link®

L+ (#1)-

L- (#1)

C/Q

4

3

1

2

1 BN
3 BU
4 BK

PIN position and color code

A0055383

Terminal head with two cable entries
2x PROFIBUS® PA

Plug

2x FOUNDATION™
Fieldbus (FF)2x PROFINET® andEthernet-APL

7/8"(#1)/7/8"(#2)

M12 (#1)/M12 (#2)

Plug thread
M12(#1) / M12(#2)#1

7/8"(#1)/7/8"(#2)#2A0021706

PIN number

Endress+Hauser

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

17

iTHERM ModuLine TM151

2x PROFINET® andEthernet-APL

2x FOUNDATION™
Fieldbus (FF)2x PROFIBUS® PA

PlugElectrical connection (terminal head)
Flying leads and TC
3-wire terminal block (1xPt100)
4-wire terminal block (1xPt100)

Not connected (not insulated)
WH/i
RD/i

WH/i

RD/i

RD/i

WH/i

RD/i

WH/i WH/i

RD/i

RD/i

WH/i WH/i

WH/i
RD/i

WH/i WH/i

WH/i WH/i

6-wire terminal block (2xPt100)

RD/B RD/B
K
K

WH/YE

RD/B RD/B
K
K

WH/YE

RD/B RD/B
K
K

WH/YE

RD/B
K

1x TMT 4 to 20 mA or
HART®

+/i

-/i

+/i

-/i

+/i

-/i

+/i

+
2x TMT 4 to 20 mA or(#1)/
HART® in the terminal head+with a high cover
(#2)

(#1)/
-(#2)

+
(#1)/
+
(#2)

(#1)/
-(#2)

i/i

i/i

1x TMT PROFIBUS® PA

+/i

-/i

2x TMT PROFIBUS® PA

+
(#1)/
+
(#2)

+
GND/
(#1)/
GND
(#1)/
+
-(#2)
(#2)

i/i

+/i

i/i

+
(#1)/
+
(#2)

2x TMT PROFINET®

Cannot be combined

Cannot be combined

Cannot be combined

Cannot be combined

Cannot be combined

4

3

1

2

PIN position and color code

WH/YE
-/i

i/i

+
(#1)/
+(#2)

i/i

(#1)/
-(#2)

Cannot be combined

1

3

2

4

1 BN
2 GNYE
3 BU
4 GY

A0018929

+/i

+
(#1)/
(#1)/
+
-(#2)
(#2)

Cannot be combined

1 BN
2 GNYE
3 BU
4 GY

i/i

(#1)/
-(#2)

GND/
(#1)/ GND
-(#2)
-/i

1x TMT PROFINET®

i/i

RD/B
K

-/i

1x TMT FF

2x TMT FF

RD/i

i/i

GND/
GND

Cannot be combined

Cannot be combined

APL
APL
signal signal+Cannot be combined

APL
APL
signa
signall+- (#1)
(#1)
and
and
(#2)
(#2)

1

3

2

4

A0018930

1 BU
2 BN
3 GY
4 GNYE

GND

4

3

1

2

i

1 RD
2 GN

A0018931

A0052119

Terminal head with two cable entries
Plug

4-pin/8-pin

Plug thread
M12 (#1)/M12 (#2)#1

#2
A0021706

PIN number

1

2

3

4

5

6

7

8

Electrical connection (terminal head)
Flying leads and TC
3-wire terminal block (1xPt100)

18

Not connected (not insulated)
RD/i

RD/i

WH/i

i/i

Endress+Hauser

iTHERM ModuLine TM151

Plug

4-pin/8-pin

4-wire terminal block (1xPt100)

WH/i

6-wire terminal block (2xPt100)

RD/BK

1x TMT 4 to 20 mA or
HART®

+/i

2x TMT 4 to 20 mA or
HART® in the terminal headwith a high cover+(#1)/ +(#2)

RD/BK

WH/i
WH/YE

-/i
i/i

i/i
-(#1)/-(#2)

1x TMT PROFIBUS® PA

Cannot be combined

2x TMT PROFIBUS® PA
1x TMT FF

Cannot be combined

2x TMT FF
1x TMT PROFINET®

Cannot be combined

2x TMT PROFINET®

Cannot be combined
4

3

PIN position and color code
1

2

2 BN

3 GN

1 BN
2 GNYE
3 BU
4 GY

1 WH
8 RD
7 BU

4 YE
5 GY
6 PK

A0018929

A0018927

Terminal head with two cable entries
Plug

2x IO-Link®, 4-pin

Plug thread

M12(#1)/M12 (#2)

PIN number

1

2

3

4

Electrical connection (terminal head)
Flying leads
3-wire terminal block (1x Pt100)

Not connected (not insulated)RDi

4-wire terminal block (1x Pt100)
6-wire terminal block (2x Pt100)

RD

WH

Cannot be combined
RD/BK

i

RD/BK

WH/YE

1x TMT 4 to 20 mA or HART®
Cannot be combined

2x TMT 4 to 20 mA or HART® in the terminal head with ahigh cover
1x TMT PROFIBUS® PA

Cannot be combined

2x TMT PROFIBUS® PA
1x TMT FF

Cannot be combined

2x TMT FF
1x TMT PROFINET®

Cannot be combined

2x TMT PROFINET®
1x TMT IO-Link®

L+

-

L-

C/Q

2x TMT IO-Link®

L+ (#1) and (#2)-

L- (#1) and (#2)

C/Q

4

3

1

2

PIN position and color code

1 BN
3 BU
4 BK
A0055383

Endress+Hauser

19

iTHERM ModuLine TM151

Connection combination: insert - transmitter
Transmitter connection 1)
Insert

TMT31/TMT7x

TMT8x

1x 1-channel

2x 1-channel

1x 2-channel

2x 2-channel

1x sensor (Pt100 or TC), flying
leads

Sensor (#1) : transmitter(#1)

Sensor (#1) : transmitter(#1)(Transmitter (#2) notconnected)

Sensor (#1) : transmitter(#1)

Sensor (#1) : transmitter (#1)
Transmitter (#2) notconnected

2x sensor (2x Pt100 or 2x TC),
flying leads

Sensor (#1) : transmitter(#1)
Sensor (#2) insulated

Sensor (#1) : transmitter(#1)
Sensor (#2): transmitter(#2)

Sensor (#1) : transmitter(#1)
Sensor (#2): transmitter(#1)

Sensor (#1) : transmitter (#1)
Sensor (#2): transmitter (#1)
(Transmitter (#2) notconnected)

1x sensor (Pt100 or TC),withterminal block 2)

Sensor (#1) : transmitterin cover2x sensor (2x Pt100 or 2x TC)
with terminal block

Sensor (#1) : transmitterin coverSensor (#2) notconnected

2x sensors (2x Pt100 or 2x TC)
in conjunction with feature
600, option MG 3)
1)

2)
3)

Cannot be combined

Sensor (#1) : transmitterin coverCannot be combined

Sensor (#1) : transmitterin coverSensor (#2): transmitterin coverSensor (#1) : transmitter(#1)
Sensor (#2): transmitter(#2)

Cannot be combined

Cannot be combined

Sensor (#1): transmitter (#1) channel 1
Sensor (#2): transmitter (#2) channel 1

If 2 transmitters are selected in a terminal head, transmitter (#1) is installed directly on the insert. Transmitter (#2) is installed in the high cover.
A TAG cannot be ordered for the second transmitter as standard. The bus address is set to the default value and, if necessary, must be changed
manually before commissioning.
Only in the terminal head with a high cover, only 1 transmitter possible. A ceramic terminal block is automatically fitted on the insert.
Individual sensors each connected to channel 1 of a transmitter

Surge arrester

To protect against overvoltage in the power supply and signal/communication cables for thethermometer electronics, Endress+Hauser offers the HAW562 surge arrester for DIN rail mounting
and the HAW569 for field housing installation.
For more information, see the Technical Information "HAW562 Surge arrester" TI01012K and"HAW569 Surge arrester" TI01013K.

Performance characteristics
Reference conditions

20

These data are relevant for determining the measurement accuracy of the transmitters used. For
details, see the relevant Technical Information.

Endress+Hauser

iTHERM ModuLine TM151

Maximum measurement
error
Class

RTD resistance thermometer or assembly as per IEC 60751

Max. tolerances (°C)

Characteristics

RTD maximum sensor error
Cl. A± (0.15 + 0.002 · |t| 1))

Cl. AA,
formerly
1/3 Cl. B± (0.1 + 0.0017 · |t|) 1)

Cl. B± (0.3 + 0.005 · |t| 1))

Max. deviation (°C)

3.0

2.5

2.0

B
1.5

1.0

A
AA

0.5

-200

-100

0

100

200

300

400

500

600°C

AA
- 0.5

A

- 1.0

B

- 1.5
- 2.0

- 2.5

- 3.0 Max. deviation (°C)
A0045598

1)|t| = absolute temperature value in °C

To obtain the maximum tolerances in °F, multiply the results in °C by a factor of 1.8.
Temperature ranges
Sensor type 1)

Operatingtemperature range

Class BClass AClass AA

Pt100 (TF) Basic–50 to +200 °C(–58 to +392 °F)–50 to +200 °C(–58 to +392 °F)–30 to +200 °C(–22 to +392 °F)-

Pt100 (TF)
Standard–50 to +400 °C(–58 to +752 °F)–50 to +400 °C(–58 to +752 °F)–30 to +250 °C(–22 to +482 °F)

0 to +150 °C(32 to 302 °F)

Pt100 (TF)
iTHERM
QuickSens–50 to +200 °C(–58 to +392 °F)–50 to +200 °C(–58 to +392 °F)–30 to +200 °C(–22 to +392 °F)

0 to +150 °C(32 to 302 °F)

Pt100 (TF)
iTHERM
StrongSens–50 to +500 °C(–58 to +932 °F)–50 to +500 °C(–58 to +932 °F)–30 to +300 °C(–22 to +572 °F)

0 to +150 °C(+32 to +302 °F)

Pt100 (WW)–200 to +600 °C(–328 to +1 112 °F)–200 to +600 °C(–328 to +1 112 °F)–100 to +450 °C(–148 to +842 °F)–50 to +250 °C(–58 to +482 °F)

1)Influence of ambient
temperature

Endress+Hauser

Selection depending on product and configuration

Depends on the head transmitter used. For details, see the relevant Technical Information.

21

iTHERM ModuLine TM151

Self-heating

RTD elements are passive resistors 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 isalso affected by the temperature conductivity and flow velocity of the process. This self-heating error
is negligible when an Endress+Hauser iTEMP transmitter (very small measurement current) isconnected.

Calibration

Calibration of thermometers
Calibration involves comparing the measured values of a unit under test (UUT) with those of a more
precise calibration standard using a defined and reproducible measurement method. The aim is todetermine the deviation of the UUT's measured values from the true value of the measured variable.
Two different methods are used for thermometers:• Calibration at fixed-point temperatures, e.g. at the freezing point of water at 0 °C,• Calibration compared against a precise reference thermometer.
The thermometer to be calibrated must display the fixed point temperature or the temperature of
the reference thermometer as accurately as possible. Temperature-controlled calibration baths withvery homogeneous thermal values, or special calibration furnaces are typically used for thermometer
calibrations. The measurement uncertainty may increase due to heat conduction errors and shortimmersion lengths. The existing measurement uncertainty is recorded on the individual calibration
certificate. For accredited calibrations in accordance with ISO17025, a measurement uncertainty thatis twice as high as the accredited measurement uncertainty is not permitted. If this limit is exceeded,
only a factory calibration is possible.
Evaluation of thermometers
If a calibration with an acceptable measurement uncertainty and transferable measurement results is
not possible, Endress+Hauser offers customers a thermometer evaluation measurement service, if
technically feasible. This is the case when:• The process connections/flanges are too big or the immersion length (IL) is too short to allow the
UUT to be immersed sufficiently in the calibration bath or furnace (see the following table), or• Due to heat conduction along the thermometer tube, the resulting sensor temperature generally
deviates significantly from the actual bath/furnace temperature.
The measured value of the UUT is determined using the maximum possible immersion depth and thespecific measuring conditions and measurement results are documented on an evaluation certificate.
Sensor-transmitter-matching
The resistance/temperature curve of platinum resistance thermometers is standardized but inpractice it is rarely possible to keep to the values precisely over the entire operating temperature
range. For this reason, platinum resistance sensors are divided into tolerance classes, such as Class
A, AA or B as per IEC 60751. These tolerance classes describe the maximum permissible deviation of
the specific sensor characteristic curve from the standard curve, i.e. the maximum temperaturedependent characteristic error that is permitted. The conversion of measured sensor resistancevalues to temperatures in temperature transmitters or other meter electronics is often susceptible toconsiderable errors as the conversion is generally based on the standard characteristic curve.
When Endress +Hauser temperature transmitters are used, this conversion error can be reduced
significantly by sensor-transmitter matching:• Calibration at three temperatures at least and determination of the actual temperature sensor
characteristic curve,• Adjustment of the sensor-specific polynomial function using Calendar-van Dusen (CvD)
coefficients,• Configuration of the temperature transmitter with the sensor-specific CvD coefficients forresistance/temperature conversion, and• another calibration of the reconfigured temperature transmitter with connected resistancethermometer.
Endress+Hauser offers its customers this kind of sensor-transmitter matching as a separate service.
Furthermore, the sensor-specific polynomial coefficients of platinum resistance thermometers arealways provided on every Endress+Hauser calibration certificate where possible, e.g. at least threecalibration points, so that users themselves can also appropriately configure suitable temperaturetransmitters.
For the device, Endress+Hauser offers standard calibrations at a reference temperature of–80 to +600 °C (–112 to +1 112 °F) based on the ITS90 (International Temperature Scale).
Calibrations in other temperature ranges are available from your Endress+Hauser sales center onrequest. Calibrations are traceable to national and international standards. The calibration certificate
is referenced to the serial number of the device. Only the insert is calibrated.

22

Endress+Hauser

iTHERM ModuLine TM151

Minimum immersion length (IL) for inserts required to perform a correct calibration
Due to the limitations of furnace geometries, the minimum insertion lengths must be observed
at high temperatures to enable a calibration to be performed with an acceptable degree ofmeasurement uncertainty. The same applies when using a head transmitter. Due to heat
conduction, minimum lengths must be observed in order to guarantee the functionality of thetransmitter –40 to +85 °C (–40 to +185 °F)
Calibration temperature

Minimum immersion length IL in mm without head transmitter–196 °C (–320.8 °F)

120 mm (4.72 in) 1)–80 to +250 °C (–112 to +482 °F)

No minimum immersion length required 2)

251 to 550 °C (483.8 to 1 022 °F)

300 mm (11.81 in)

551 to 600 °C (1 023.8 to 1 112 °F)

400 mm (15.75 in)

1)
2)

Insulation resistancewith iTEMP head transmitter min. 150 mm (5.91 in) is required
at a temperature of 80 to 250 °C (176 to 482 °F), the iTEMP head transmitter requires min.
50 mm (1.97 in)• RTD:
Insulation resistance according to IEC 60751 > 100 MΩ at 25 °C between terminals and sheathmaterial 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

Installation
Orientation

No restrictions. However, self-draining in the process should be guaranteed depending on theapplication.

Installation instructions
2
L

1
d

3

h

d

h

U
U
!D

4

A0010222

 15

Installation examples

1 - 2 In pipes with a small cross-section, the sensor tip should reach or extend slightly past the center axis of thepipe (=U).
3 - 4 Slanted orientation.

Endress+Hauser

23

iTHERM ModuLine TM151

The immersion length of the thermometer influences the measurement accuracy. If the immersion
length is too small, errors in the measurement are caused by heat conduction via the processconnection and the container wall. Therefore, if installing in a pipe the immersion length should be
at least half the pipe diameter. Installation at an angle (see item 3 and 4) could be another solution.
When determining the immersion length, all the parameters of the thermometer and of the process
to be measured must be taken into account (e.g. flow velocity, process pressure).
For the best installation, apply the following rule: h ~ d; U > D/2 +h.
The counterparts for process connections and seals are not supplied with the thermometer and must
be ordered separately if needed.

Ambient conditions
Ambient temperature range

Terminal head

Temperature in °C (°F)

Without mounted head transmitter

Depends on the terminal head used and the cable gland or fieldbus
connector; see "Terminal heads" section.

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

With mounted head transmitter anddisplay–20 to +70 °C (–4 to +158 °F)

Storage temperature

For information, see the ambient temperature above.

Humidity

Depends on the transmitter used If Endress+Hauser iTEMP head transmitters are used:• Condensation permitted as per IEC 60 068-2-33• Max. rel. humidity: 95% as per IEC 60068-2-30

Climate class

As per EN 60654-1, Class C

Degree of protection

Max. IP 66 (NEMA Type4x encl.)Depending on the design (terminal head, connector, etc.).

Partly IP 68

Tested in 1.83 m (6 ft) over 24 h

Shock and vibration
resistance

The Endress+Hauser inserts exceed the requirements of IEC 60751 with regard to shock andvibration resistance of 3g in a range of 10 to 500 Hz. The vibration resistance of the measuring point
depends on the sensor type and design. Refer to the following table:
Sensor type
Pt100 (WW)Pt100 (TF), basic

Electromagnetic
compatibility (EMC)

Vibration resistance for the sensor tip≤ 30 m/s² (3g)

Pt100 (TF), standard≤ 40 m/s² (4g)

iTHERM StrongSens Pt100 (TF)

≤ 600 m/s² (60g)

iTHERM QuickSens Pt100 (TF), version: ⌀6 mm (0.24 in)
iTHERM QuickSens Pt100 (TF), version: ⌀3 mm (0.12 in)≤ 600 m/s² (60g)≤ 30 m/s² (3g)

Thermocouple inserts≤ 30 m/s² (3g)

Depends on the head transmitter used. For details, see the relevant Technical Information.

Process
Process temperature range

24

Depends on the sensor type and the thermowell material used,

Endress+Hauser

iTHERM ModuLine TM151

max. –200 to +1 100 °C (–328 to +2 012 °F)
for fast-response thermowell max. –200 to +400 °C (–328 to +752 °F)
Process pressure range

The maximum possible process pressure depends on various influencing factors, such as the design,
process connection and process temperature. For information on the maximum possible processpressures for the individual process connections, see the "Process connection" section.
It is possible to check the mechanical loading capacity as a function of the installation andprocess conditions online using the Sizing Thermowell calculation tool in the Endress+Hauser
Applicator software. https://portal.endress.com/webapp/applicator
Permitted flow velocity depending on the immersion length
The highest flow velocity tolerated by the thermometer diminishes with increasing sensor
immersion length exposed to the flowing fluid. In addition it is dependent on the diameter of boththe thermometer tip and thermowell, on the type of measuring medium, the process temperatureand the process pressure.
Process connection

Standard

Max. process pressure

Weld-in version/socket weld-

≤ 500 bar (7 252 psi)

Flange

EN1092-1 or ISO 7005-1

Depending on the flange pressure rating PNxx:
20, 40, 50 or 100 bar at 20 °C (68 °F)

ASME B16.5

Depending on the flange pressure rating 150, 300, 600,
900/1500 or 2500 psi at 20 °C (68 °F)

JIS B 2220

Depending on the flange pressure rating 10K

ThreadISO 965-1 / ASME B1.13M
140 bar (2 031 psi) at +40 °C (+140 °F)
ISO 228-1
85 bar (1 233 psi) at +400 °C (+752 °F)
ANSI B1.20.1
DIN EN 10226-1 / JIS B 0203

Mechanical construction
Design, dimensions

All dimensions in mm (in). The design of the thermometer depends on the general design version
used:• Thermometer for installation in a separate thermowell• Thermometer with thermowell, based on ASME: ANSI flanges, NPT thread, socket weld and weldin version• Thermometer with thermowell, based on DIN: EN flanges, M-thread or G-thread, socket weld andweld-in version• Thermometer with thermowell, based on NAMUR and TwistWell, flanges
It is possible to check the mechanical loading capacity depending on the installation andprocess conditions online in the TW Sizing Module for thermowells in the Endress+Hauser
Applicator software. See "Accessories" section.
Various dimensions, such as the immersion length U, the lagging length T and the extension
neck length E, for example, are variable values and are therefore indicated as items in thefollowing dimensional drawings.
Variable dimensions:

Endress+Hauser

Item

Description

E

Extension neck length, variable depending on the configuration or pre-defined for the version with
iTHERM QuickNeck

IL

Insertion length of insert

L

Thermowell length (U+T)

T

Length of lagging: variable or predefined, depends on thermowell version (see also the individual
table data)

25

iTHERM ModuLine TM151

Item

Description

U

Immersion length: variable, depending on the configuration

L_Gp

Thread length (complete thread length)

L_Gp_eThread engagement length

Gp

Process connection thread

B

Thermowell bottom thickness (default value 6 mm (0.24 in) - other thickness optionally available)

D1

Root diameter

D2

Tip diameter

C1

Length of the tapered part

Re1

Stepped length of tip

Di1

Bore diameter

Di2

Bore diameter tip

De1

Lagging diameter

Ge1

Thermometer connection thread

Hd, SL

Variable for calculating the insertion length of the insert, depending on different screw-in lengths
in terminal head thread M24x1.5 or ½" NPT, see insert length calculation (IL).

12

M24x1.5

Hd
E (T)

8 (0.32)
X

Hd
E (T)
24
15 (0.95)
(0.6)

SL

SL

2
(0.08)

NPT ½“A0039122

 16
1
2
Hd
SL
GC

Different screw-in lengths in terminal head thread for M24x1.5 and ½" NPT

Metric thread M24x1.5
Conical thread NPT ½"
Distance in terminal head
Spring pre-load

Gasket compensation only for metric threads

Thermometer for installation in a separate thermowell
The thermometer is supplied without a thermowell but is designed for use with a thermowell.
This version cannot be used for direct immersion in the process medium!

26

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iTHERM ModuLine TM151

The thermometer can be configured as follows
B, C, D, E

Hd

Hd

A

U

GC

U

IL

IL

E

!d

A0051677

Hd
8 (0.32)

G (ASME-style)

8 (0.32)

GC

U

U

IL

IL

IL

U

IL
U

E

E

E

E

Hd

G (DIN-style)

Hd

F (ASME-style)

Hd

F (DIN-style)

A0052795

Endress+Hauser

27

iTHERM ModuLine TM151

L

M

N

Hd

8
(0.32)
8(0.32)

EIL

8(0.32)

U8(0.32)

UU

8(0.32)

IL

IL

E
U

GC

U

IL

65 (2.56)

8(0.32)

Hd
8(0.32)EE

E = 56
(2.2)

Hd

Hd

H

A0051681• Option A: without extension neck (female thread M24, M20x1.5 or NPT ½") 1)• Option B, C, D, E: removable extension neck; metric thread for connection to thermowell must be selected• Option F (DIN-style): QuickNeck upper part iTHERM TS111• Option F (ASME-style): QuickNeck upper part with iTHERM TS211• Option G (DIN-style): QuickNeck, complete, with iTHERM TS111• Option G (ASME-style): QuickNeck, complete, with iTHERM TS211• Option H: extension neck with second process seal (thread M24x1.5 female fitting to thermowell) or with male thread, metric or NPT ½"• Options L, M, N: NPT ½" nipple, nipple-union or nipple-union-nipple connection
1)

Configuration feature 50: process/thermowell connection

Calculation of insert length IL
Option A: without neck

IL = U + Hd

Option A for use with NAMUR thermowell

Thermowell TT151 type NF1: UTM151 = 304 mm (11.97 in); IL = 315 mm (12.4 in)
Thermowell TT151 type NF2: UTM151 = 364 mm (14.33 in); IL = 375 mm (14.8 in)
Thermowell TT151 type NF3: UTM151 = 424 mm (16.7 in); IL = 435 mm (17.13 in)

Options B, C, D, E: removable extension neck

Metric thread version: IL = U + E + Hd + GC
NPT thread version: IL = U + E + Hd

Option F (DIN-style): QuickNeck, upper part

IL = U + E + Hd
Length E = 28 mm (1.10 in) for M24x1.5 to terminal head
Length E = 21 mm (0.83 in) for NPT ½" to terminal head

Option F (ASME-style): QuickNeck, upper part

IL = U + E + Hd
Length E = 46 mm (1.81 in) for M24x1.5 to terminal head
Length E = 44 mm (1.73 in) for NPT ½" to terminal head

Option G (DIN-style): QuickNeck, complete

DIN-style: Thermowell connection as cylindrical thread (M14; M18; G½")
IL = U + E + Hd + GC
Length E = 74 mm (2.91 in) for M24x1.5 to terminal head
Length E = 68 mm (2.68 in) for NPT ½" to terminal head

Option G (ASME-style): QuickNeck, complete

ASME-style: Thermowell connection as conical thread (NPT ½")
IL = U + E + Hd + GC
Length E = 101 mm (3.98 in)

Option H: second process seal

Thermowell connection as internal thread M24x1.5
IL = U + E + Hd+GC
Length E = 56 mm (2.2 in) for M24x1.5 to terminal head
Length E = 48 mm (1.89 in) for NPT ½" to terminal head
Thermowell connection as cylindrical thread (M14; M18; G½")
IL = U + E + Hd + GC
Length E = 85 mm (3.35 in) for M24x1.5 to terminal head
Length E = 76 mm (3 in) for NPT ½" to terminal head28

Endress+Hauser

iTHERM ModuLine TM151

Thermowell connection as conical thread NPT ½"
IL = U + E + Hd
Length E = 147 mm (5.79 in) for application: Non-Ex, Ex ia, GP, IS
Length E = 158 mm (6.22 in) for application: Ex d, XP
Options L, M, N: nipple connection

IL = U + E + Hd

Hd for head thread M24x1.5 (TA30A, TA30D, TA30P, TA30R, TA20AB) = 11 mm (0.43 in)
Hd for head thread NPT ½" (TA30EB) = 26 mm (1.02 in)
Hd for head thread NPT ½" (TA30H) = 41 mm (1.61 in)
GC seal compensation = 2 mm (0.08 in)

Thermometer with thermowell according to ASME standard
The thermometer always has a thermowell.
The thermometer can be configured as follows 2)
B

C

D

E

T

IL

T

T

IL

IL

IL

T

E

Hd

E

E

Hd

Hd

Hd

A

2

B

U
B

B

B

U

U

U

1

A0051907• Option A: based on ASME B40.9, with flange• Option B: based on ASME B40.9, with thread• 1: NPT thread• 2: Metric thread• Option C: based on ASME B40.9, for weld-in• Option D: based on ASME B40.9, with socket weld2)

See also configuration feature 020/030: Thermowell/thermometer structure

Endress+Hauser

29

iTHERM ModuLine TM151

Calculation of insert length IL
Application Non-Ex/Ex
ia/GP/IS

Application Ex d/XP

Version A

IL = U + T + E + Hd - B + SL
SL = spring pre-load = 6 mm (0.24 in)
B = 6 mm (0.24 in)

Hd = –17 mm (–0.67 in)
E = 101 mm (3.98 in)

Hd = 10 mm (0.39 in)
E = 101 mm (3.98 in)

Version B

IL = U + T + E + Hd - B + SL
SL = spring pre-load = 6 mm (0.24 in)
B = 6 mm (0.24 in)

Hd = –17 mm (–0.67 in)
E = 147 mm (5.79 in)

Hd = 10 mm (0.39 in)
E = 158 mm (6.22 in)

Version C

IL = U + T + E + Hd - B + SL
SL = spring pre-load = 6 mm (0.24 in)
B = 6 mm (0.24 in)

Hd = –17 mm (–0.67 in)
E = 35 mm (1.38 in)

Hd = 10 mm (0.39 in)
E = 47 mm (1.85 in)

Version D

IL = U + T + E + Hd - B + SL
SL = spring pre-load = 6 mm (0.24 in)
B = 6 mm (0.24 in)

Hd = –17 mm (–0.67 in)
E = 142 mm (5.6 in)

Hd = 10 mm (0.39 in)
E = 154 mm (6.06 in)

The length E specifications are nominal values and may vary, due to the tolerances of the NPT
threads.
Thermometer with thermowell according to DIN standard
The thermometer always has a thermowell.
Thermowell, based on DIN 43772, Form 4F describes a flange, Form 4 the weld-in form as aprocess connection.

Hd

E

Hd

E

T
1

B

B

B

U

U

U

IL

IL

IL

GC

GC

GC

T

E

Hd

The thermometer can be configured as follows 2)

2

3
A0051944

1
2
3

30

Version E: version with flange and removable extension neck
Version G: version for weld-in with QuickNeck
Version E: version with flange and extension neck with second process seal

Endress+Hauser

iTHERM ModuLine TM151

Calculation of insert length IL
Application Non-Ex/Ex
ia/GP/IS

Application Ex d/XP

Version E with removable extension
neck (feature 30: B, C, D)

IL = U + T + E + Hd - B + GC + SL
SL = spring pre-load = 2 mm (0.078 in)
B = 6 mm (0.24 in)
GC = 2 mm (0.078 in)

Hd = 11 mm (0.43 in)
E = variable

Hd = 26 mm (1.02 in)
E = variable

Version G with QuickNeck (feature
30: G)IL = U + T + E + Hd - B + GC + SL
SL = spring pre-load = 2 mm (0.078 in)
B = 6 mm (0.24 in)
GC = 2 mm (0.078 in)

Hd = 11 mm (0.43 in)
E = 74 mm (2.91 in)

Hd = 26 mm (1.02 in)
E = 68 mm (2.67 in)

Version E with extension neck withsecond process seal (feature 30: H)

IL = U + T + E + Hd - B + GC + SL
SL = spring pre-load = 2 mm (0.078 in)
B = 6 mm (0.24 in)
GC = 2 mm (0.078 in)

Hd = 11 mm (0.43 in)
E = 85 mm (3.35 in)

Hd = 26 mm (1.02 in)
E = 76 mm (3 in)

Thermometer with thermowell as per NAMUR NE170
The thermometer always has a thermowell.

B

B

U

U

IL

IL

T

T

E

Hd

Hd

The thermometer can be configured as follows 2)

1

2
A0051983

1
2

Endress+Hauser

Version M without extension neck
Version M, extension neck with second process seal

31

iTHERM ModuLine TM151

Calculation of insert length IL
Application Non-Ex/Ex
ia/GP/IS

Application Ex d/XP

Version M without extension neck(feature 30: A)

IL = U + T + Hd - B + SL
Hd = 11 mm (0.43 in)
B = 7 mm (0.28 in)
SL = spring pre-load = 2 mm (0.08 in)--

Version M, extension neck withsecond process seal (feature 30: H)

IL = U + T + E + Hd - B + SL
B = 7 mm (0.28 in)
SL = spring pre-load = 2 mm (0.08 in)

Hd = 11 mm (0.43 in)
E = 56 mm (2.2 in)

Hd = 26 mm (1.02 in)
E = 48 mm (1.9 in)

Thermometer with iTHERM TwistWell thermowell
The thermometer always has a thermowell.

Hd

IL
T

T

IL
T

1

2

3

B

B

U

U
B

B

B

U

U

U

IL

IL

IL

T

T

Hd

E

GC

E

E
Hd

E

E

Hd

Hd

The thermometer can be configured as follows 2)

4

5A0051987

1
2
3
4
5

Version T, iTHERM TwistWell, with flange and removable extension neck according to DIN standard
Version T; iTHERM TwistWell, with flange and QuickNeck
Version T; iTHERM TwistWell, with flange and extension neck with second process seal
Version T; iTHERM TwistWell, with flange and nipple connection
Version T; iTHERM TwistWell, with flange and nipple-union-nipple connection

Calculation of insert length IL
Application Non-Ex/Ex
ia/GP/IS

Application Ex d/XP

1: With flange and removable
extension neck according to DIN
standard

IL = U + T + E + Hd - B + GC + SL
B = 6 mm (0.24 in)
SL = spring pre-load = 2 mm (0.08 in)
GC = 2 mm (0.078 in)

Hd = 11 mm (0.43 in)
E = variable

Hd = 26 mm (1.02 in)
E = variable

2: With flange and QuickNeck

IL = U + T + E + Hd - B + SL
B = 6 mm (0.24 in)
SL = spring pre-load = 6 mm (0.24 in)

Hd = –17 mm (–0.67 in)
E = 101 mm (3.98 in)

Hd = 10 mm (0.39 in)
E = 101 mm (3.98 in)

32

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iTHERM ModuLine TM151

3: With flange and extension neckwith second process seal

IL = U + T + E + Hd - B + SL
B = 6 mm (0.24 in)
SL = spring pre-load = 6 mm (0.24 in)

Hd = 11 mm (0.43 in)
E = 147 mm (5.79 in)

Hd = 26 mm (1.02 in)
E = 158 mm (6.22 in)

4: With flange and nipple
connection

IL = U + T + E + Hd - B + SL
B = 6 mm (0.24 in)
SL = spring pre-load = 6 mm (0.24 in)

Hd = –17 mm (–0.67 in)
E = 35 mm (1.38 in)

Hd = 10 mm (0.39 in)
E = 47 mm (1.85 in)

Hd = –17 mm (–0.67 in)
E = 142 mm (5.6 in)

Hd = 10 mm (0.39 in)
E = 158 mm (6.22 in)

5: With flange and nipple-unionnipple connection

The length E specifications are nominal values and may vary, due to the tolerances of the NPT
threads.
Forged thermowell
Ge1

T

De1

D1

U

D1

Di

Re1

Di1

B

Di2
D2

D2
A0052379

To avoid having to use welded flanged process connections, you can opt for a forged thermowell.
This offers the highest level of fatigue resistance in accordance with ASME PTC 19.3 TW. Opting for
a forged thermowell means that welding seam checks and faults can be excluded. It can be used in
extreme process environments.
This applies to the following thermowell versions: flanged, references acc. to ASME/Universal/DIN

Endress+Hauser

33

iTHERM ModuLine TM151

Versions of flanged thermowells
Welded on both sides

Full penetration weld

A0052792

Forged - not welded

A0052794

A0052702• Suitable for most applications• Meets requirements with an
optional cost-benefit ratio• Suitable for harsh application
environments• Stronger welded connection• Higher costs

Weight

0.5 to 37 kg (1 to 82 lbs) for standard versions.

Materials

Lagging and thermowell, insert, process connection• Suitable for harsh application
environments• No welding• Cost-effective alternative toflange connection with full
penetration welding

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 mechanical load.
The maximum operating temperatures can be reduced considerably in cases where abnormal
conditions such as high mechanical load occur or in aggressive media.
Please note that the maximum temperature also always depends on the temperature sensor used!

34

Material name

Short form

Recommended
max.
temperature forcontinuous use
in air

PropertiesAISI 316/1.4401

X5CrNiMo 17-12-2

650 °C(1 202 °F) 1)• Austenitic, stainless steel• High corrosion resistance in general• Particularly high corrosion resistance inchlorinated and acidic, non-oxidizing
atmospheres through the addition ofmolybdenum (e.g. phosphoric and sulfuric
acids, acetic and tartaric acids with a low
concentration)

AISI 316L/1.4404
1.4435

X2CrNiMo17-12-2
X2CrNiMo18-14-3

650 °C(1 202 °F) 1)• Austenitic, stainless steel• High corrosion resistance in general• Particularly high corrosion resistance inchlorinated and acidic, non-oxidizing
atmospheres through the addition ofmolybdenum (e.g. phosphoric and sulfuric
acids, acetic and tartaric acids with a low
concentration)• Increased resistance to intergranularcorrosion and pitting• Compared to 1.4404, 1.4435 has evenhigher corrosion resistance and a lower
delta ferrite content

Endress+Hauser

iTHERM ModuLine TM151

Endress+Hauser

Material name

Short form

Recommended
max.
temperature forcontinuous use
in air

PropertiesAISI 316Ti/1.4571

X6CrNiMoTi17-12-2 700 °C(1 292 °F) 1)• Properties comparable with AISI316L• Addition of titanium means increased
resistance to intergranular corrosion evenafter 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

Alloy600/ 2.4816

NiCr15Fe

1 100 °C
(2 012 °F)• A nickel/chromium alloy with very good
resistance to aggressive, oxidizing andreducing atmospheres, even at hightemperatures• Resistance to corrosion caused by chlorine
gases and chlorinated media as well as
many oxidizing mineral and organic acids,
sea water etc.
• Corrosion from ultrapure water• Not to be used in sulfur-containing
atmospheres

AlloyC276/2.4819

NiMo16Cr15W

1 100 °C
(2 012 °F)• A nickel-based alloy with good resistance tooxidizing and reducing atmospheres, evenat high temperatures• Particularly resistant to chlorine gas andchloride as well as to many oxidizing
mineral and organic acids

AISI 347/1.4550

X6CrNiNb18-10

900 °C (1 652 °F)• Austenitic, stainless steel• Better intercrystalline corrosion resistancein oxidizing environments• Good welding properties• For high-temperature applications likefurnacesAISI 310/1.4841

X15CrNiSi25-20

1 100 °C
(2 012 °F)• Austenitic, stainless steel• Generally good resistance to oxidizing andreducing atmospheres• Due to the higher chromium content, good
resistance to oxidizing aqueous solutions
and neutral salts melting at higher
temperatures• Only low resistance to sulfur-containing
gases

AISI A105/1.0460

C22.8

450 °C (842 °F)• Heat-resistant steel• Resistant in nitrogen-containing
atmospheres and atmospheres that are lowin oxygen; not suitable for acids or otheraggressive media• Often used in steam generators, water andsteam pipes, pressured vessels

AISI A182
F11/1.7335

13CrMo4-5

550 °C (1 022 °F)• Low alloy, heat-resistant steel withchromium and molybdenum additions• Better corrosion resistance compared to
non-alloy steels, not suitable for acids andother aggressive media• Often used in steam generators, water andsteam pipes, pressured vessels

35

iTHERM ModuLine TM151

Material name

Short form

Recommended
max.
temperature forcontinuous use
in air

Properties

Titanium/3.7035-

600 °C (1 112 °F)• A light metal with very high corrosion
resistance and strength values• Very good resistance to many oxidizing
mineral and organic acids, saline solutions,sea water etc.
• Prone to fast embrittlement at hightemperatures through the absorption ofoxygen, nitrogen and hydrogen• Compared to other metals, titanium reacts
readily with many media (O2, N2, Cl2, H2) at
higher temperatures and/or increased
pressure• Can only be used in chlorine gas andchlorinated media at comparatively low
temperatures (<400 °C)

1.541516Mo3

530 °C (986 °F)• Alloyed creep-resistant steel• Particularly well suited as pipe material forboiler construction, super heater tube,
superheated steam and collecting pipe,
stove and line pipes, for heat exchangers
and for the purposes of oil-refining
industries

Duplex S32205

X2CrNi-MoN22-5-3

300 °C (572 °F)• Austenitic ferritic steel with goodmechanical properties• High resistance to general corrosion, pitting,chlorine-induced or transgranular stresscorrosion• Comparatively good resistance to hydrogeninduced stress corrosion

1.7380

10CrMo9-10

580 °C (1 076 °F)• Alloyed, heat-resistant steel• Particularly suitable for steam boilers, boiler
parts, boiler drums, pressure vessels forapparatus constructions and similar
purposes

1)

Can be used to a limited extent up to 800 °C (1472 °F) for low mechanical loads and in non-corrosive
media. Please contact your Endress+Hauser sales team for further information.

Thermowell/thermometer
connections

U

1

TL

IL
U
TL

E = 56(2.2)

Connection thread
Metric female thread

VersionThread length TL

Across flatsM

14 mm (0.55 in)

30 mm (1.18 in)

M24x1.5

The metric female
thread is notdesigned as aprocess connection.
This connection is
only available forthermometers
without athermowell.

1
A0043558

1 Female thread

36

Endress+Hauser

iTHERM ModuLine TM151

VersionThread length TL

Across flats

NPT

8 mm (0.32 in)

22 mm (0.87 in)

NPT ½"

The conical female
thread is notdesigned as aprocess connection.
This connection is
only available forthermometers
without athermowell.

TL

U

E

TL

Connection thread
Conical female thread

1

U

1

A0043562

1 Female thread

QuickNeck (upper half)U

E = 28(1.10)iTHERM QuickNeck - upper half - for installation in an existing thermowell with iTHERM
QuickNeck.

A0043611

Connection thread
Male thread

SW/AF

VersionThread length TL

Across flats

Max. processpressureM

M14x1.5

12 mm (0.47 in)

22 mm (0.87 in)M20x1.5

14 mm (0.55 in)

27 mm (1.06 in)

M18x1.5

12 mm (0.47 in)

24 mm (0.95 in)Maximum static
process pressure forthreaded processconnection: 1)

G ½" DIN / BSP

15 mm (0.6 in)

27 mm (1.06 in)

NPT ½"

8 mm (0.32 in)

22 mm (0.87 in)

E

TL

TL

G

2)

NPT

ML,
L

400 bar (5 802 psi)
at+400 °C (+752 °F)

A0019445

 17

1)
2)

Cylindrical (left side) and conical (right side)
versionMaximum pressure specifications only for the thread. The failure of the thread is calculated, taking the static pressure into consideration. The
calculation is based on a fully tightened thread (TL = thread length)
DIN ISO 228 BSPP

Endress+Hauser

37

iTHERM ModuLine TM151

Thermometer connection

Version Ge1
M

Ge1

L_1

L_2

Standard/Class

M14x1.5

ASME B1.13M/ISO
965-1 H6

M18x1.525(0.98)

L_2

L_1

M20x1.5

G 1)

G ½" DIN / BSP

NPT

NPT ½"

17 mm (0.67 in)

20 mm (0.79 in)

ISO 228-1 A
ANSI B1.20.1

A0040912

Female thread

4 (0.16) 18

14(0.56)

20(0.79)

M24x1.5

A0047327

 191)

Adjustable male thread
DIN ISO 228 BSPP

Process connections

Thread

T

U

U

L_Gp

T

L_Gp_e
L_Gp

Threaded process connection

VersionThread length L_Gp

Standard

Max. process pressureM

M20x1.5

14 mm (0.55 in)

M27x2

16 mm (0.63 in)

ASME B1.13M
ISO 965-1 g6

Maximum static processpressure for threaded
process connection: 1)

M33x2

18 mm (0.71 in)

G

G ½"

15 mm (0.6 in)

ISO 228-1 A

NPT

NPT ½"

20 mm (0.79 in)
L_Gp_e:8 mm (0.32 in)

ANSI B1.20.1

NPT ¾"

20 mm (0.79 in)
L_Gp_e:8 mm (0.32 in)

NPT 1"

25 mm (0.98 in)
L_Gp_e:10 mm (0.39 in)

A0040916

 20

1)

38

Cylindrical (left side) and conical (right side)
version400 bar (5 802 psi) at+400 °C (+752 °F)

Maximum pressure specifications only for the thread. The failure of the thread is calculated, taking the static pressure into consideration. The
calculation is based on a fully tightened thread

Endress+Hauser

iTHERM ModuLine TM151

WR size matrix for threaded thermowells (hexagonal lagging)
Ge1

20 mm
(0.79 in)WR

Gp

A0040913

Process connection size Gp (male thread)
M20x1.5
Thermometer
connection, Ge1(female thread)

M27x2

M33x2

G ½"

NPT ½"

NPT ¾"NPT 1"

M14x1.5

WR 27

WR 36

WR 41

WR 27

WR 24

WR 27

WR 27

M18x1.5

WR 27

WR 36

WR 41

WR 27

WR 24

WR 27

WR 27

M20x1.5

WR 27

WR 36

WR 41

WR 27

WR 24

WR 27

WR 27

NPT ½"

WR 27

WR 36

WR 41

WR 27

WR 24

WR 27

WR 27

G ½"

WR 27

WR 36

WR 41

WR 27

WR 24

WR 27

WR 27

De1 size matrix for screw-in thermowells in mm (in)

B

B

16

Ge1

De1
Gp

WR

B-B
A0040986

Process connection size Gp (male thread)

Thermometer
connection size Ge1(female thread)Endress+Hauser

M20x1.5

M27x2

M14x1.5

26.7 (1.05)

33.4 (1.31)

M18x1.5

26.7 (1.05)

M20x1.5

M33x2

G ½"

NPT ½"

NPT ¾"NPT 1"

40 (1.57)

26.7 (1.05)

26.7 (1.05)

26.7 (1.05)

33.4 (1.31)

33.4 (1.31)

40 (1.57)

26.7 (1.05)

26.7 (1.05)

26.7 (1.05)

33.4 (1.31)

26.7 (1.05)

33.4 (1.31)

40 (1.57)

26.7 (1.05)

26.7 (1.05)

26.7 (1.05)

33.4 (1.31)

NPT ½"

26.7 (1.05)

33.4 (1.31)

40 (1.57)

26.7 (1.05)

26.7 (1.05)

26.7 (1.05)

33.4 (1.31)

G ½"

26.7 (1.05)

33.4 (1.31)

40 (1.57)

26.7 (1.05)

26.7 (1.05)

26.7 (1.05)

33.4 (1.31)

39

iTHERM ModuLine TM151

Wrench flats

WR 22

WR 27

WR 36

WR 22

WR 22

WR 22

WR 27

Weld-in, socket weld
Weld-in version/socket weld
De1

De1

De1

•  18 mm (0.71 in)•  24 mm (0.94 in)•  26 mm (1.02 in)•  26.7 mm (NPS ¾")•  33.4 mm (NPS 1")

A0040914

min. 40 (1.57)

25 (0.98)

min. 40 (1.57)

25 (0.98)

Welding recommendation: distance between welding seam and end of thermowell should be atleast 40 mm (1.57 in). To avoid thread deformations a dummy plug is recommended.

A0040915

Flanges
The flanges are supplied in stainless steel AISI 316L with material number 1.4404 or 1.4435.
With regard to their stability-temperature property, the materials 1.4404 and 1.4435 aregrouped together under 13E0 in DIN EN 1092-1 Tab.18 and under 023b in JIS B2220:2004
Tab. 5. The ASME flanges are grouped together under Tab. 2-2.2 in ASME B16.5-2013. Inches
are converted into metric units (in - mm) using the factor 2.54. In the ASME standard, themetric data is rounded to 0 or 5.
Versions• DIN flanges: German Standards Institute DIN 2527
• EN flanges: European standard DIN EN 1092-1:2002-06 and 2007
• ASME flanges: American Society of Mechanical Engineers ASME B16.5-2013• JIS flanges: Japanese Industrial Standard B2220:2004• HG/T flanges: Chinese Chemical Standard HG/T 20592-2009 and 20615-200940

Endress+Hauser

iTHERM ModuLine TM151

Geometry of sealing surfaces
Flanges

DIN 2526 1)

Sealing surface

Form
without
raised faceA
B

DIN EN 1092-1

ASME B16.5

Rz (µm)Form

Rz (µm)Ra (µm)Form

40 to 160

2)

12.5 to 50

3.2 to 12.5

Flat face (FF)A

Raised face(RF)

3.2 to 6.3(AARH
125 to 250µin)

Tongue (T)3.2

UA0043514with raised
face

C
D
E

40 to 160
40
16

B1 3)

12.5 to 50

3.2 to 12.5

B2

3.2 to 12.5

0.8 to 3.2

F

-

C

3.2 to 12.5

0.8 to 3.2

Ra (µm)U
A0043516

TongueU
A0043517

GrooveN

D

Groove (G)U
A0043518

Projection

V 13

-

E

12.5 to 50

3.2 to 12.5

Male (M)

3.2

UA0043519

RecessR 13

F

Female (F)U
A0043520

Projection

V 14

for O-ringsH

3.2 to 12.5

3.2 to 12.5

-

-

-

-

Ring-typejoint (RTJ)

1.6

U
A0043521

Recess

R 14

G

U
A0043522

With ringtype joint

-

-

-

-

-

U
A0052680

1)
2)
3)

Contained in DIN 2527
Typically PN2.5 to PN40
Typically from PN63

Flanges according to the old DIN standard are compatible with the new DIN EN 1092-1 standard.
Change in pressure ratings: Old DIN standards PN64 → DIN EN 1092-1 PN63.

Endress+Hauser

41

iTHERM ModuLine TM151

Height of raised face 1)Standard

FlangesHeight of raised face f

Tolerance

DIN EN 1092-1:2002-06

all types

2 (0.08)

DIN EN 1092-1:2007≤ DN 320–1 (–0.04)> DN 32 to DN 250

3 (0.12)0–2 (–0.08)> DN 250 to DN 500

4 (0.16)0–3 (–0.12)> DN 500

5 (0.19)0–4 (–0.16)≤ Class 300

1.6 (0.06)±0.75 (±0.03)≥ Class 600

6.4 (0.25)

0.5 (0.02)< DN 20

1.5 (0.06)
0-> DN 20 to DN 50

2 (0.08)
0> DN 50

3 (0.12)
0

ASME B16.5 - 2013

JIS B2220:2004

1)

Dimensions in mm (in)EN flanges (DIN EN 1092-1)
D

b

L

f

d
K

A0029176

 21
L
d
K
D
b
f

Raised face B1

Bore diameter
Diameter of raised face
Diameter of pitch circle
Flange diameter
Total flange thickness
Height of raised face (generally 2 mm (0.08 in)

PN16 1)

42

DN

D

b

K

d

L

approx. kg (lbs)25

115 (4.53)

18 (0.71)

85 (3.35)

68 (2.68)

4x⌀14 (0.55)

1.50 (3.31)

32

140 (5.51)

18 (0.71)

100 (3.94)

78 (3.07)

4x⌀18 (0.71)

2.00 (4.41)

40

150 (5.91)

18 (0.71)

110 (4.33)

88 (3.46)

4x⌀18 (0.71)

2.50 (5.51)

50

165 (6.5)

18 (0.71)

125 (4.92)

102 (4.02)

4x⌀18 (0.71)

2.90 (6.39)

65

185 (7.28)

18 (0.71)

145 (5.71)

122 (4.80)

8x⌀18 (0.71)

3.50 (7.72)

80

200 (7.87)

20 (0.79)

160 (6.30)

138 (5.43)8x⌀18 (0.71)

4.50 (9.92)

100

220 (8.66)

20 (0.79)

180 (7.09)

158 (6.22)

8x⌀18 (0.71)

5.50 (12.13)

125

250 (9.84)

22 (0.87)

210 (8.27)

188 (7.40)

8x⌀18 (0.71)

8.00 (17.64)

150

285 (11.2)

22 (0.87)

240 (9.45)

212 (8.35)

8x⌀22 (0.87)

10.5 (23.15)200

340 (13.4)

24 (0.94)

295 (11.6)

268 (10.6)

12x⌀22 (0.87)

16.5 (36.38)

Endress+Hauser

iTHERM ModuLine TM151

DN

D

b

K

d

L

approx. kg (lbs)250

405 (15.9)

26 (1.02)355 (14.0)

320 (12.6)

12x⌀26 (1.02)

25.0 (55.13)

300

460 (18.1)

28 (1.10)410 (16.1)

378 (14.9)12x⌀26 (1.02)

35.0 (77.18)

1)

The dimensions in the following tables are in mm (in), unless otherwise specified

PN25
DN

D

b

K

d

L

approx. kg (lbs)25

115 (4.53)

18 (0.71)

85 (3.35)

68 (2.68)

4x⌀14 (0.55)

1.50 (3.31)

32

140 (5.51)

18 (0.71)

100 (3.94)

78 (3.07)

4x⌀18 (0.71)

2.00 (4.41)

40

150 (5.91)

18 (0.71)

110 (4.33)

88 (3.46)

4x⌀18 (0.71)

2.50 (5.51)

50

165 (6.5)

20 (0.79)

125 (4.92)

102 (4.02)

4x⌀18 (0.71)

3.00 (6.62)

65

185 (7.28)

22 (0.87)

145 (5.71)

122 (4.80)

8x⌀18 (0.71)

4.50 (9.92)

80

200 (7.87)

24 (0.94)

160 (6.30)

138 (5.43)8x⌀18 (0.71)

5.50 (12.13)

100

235 (9.25)

24 (0.94)

190 (7.48)

162 (6.38)

8x⌀22 (0.87)

7.50 (16.54)

125

270 (10.6)

26 (1.02)

220 (8.66)

188 (7.40)

8x⌀26 (1.02)

11.0 (24.26)

150

300 (11.8)

28 (1.10)250 (9.84)

218 (8.58)

8x⌀26 (1.02)

14.5 (31.97)200

360 (14.2)

30 (1.18)

310 (12.2)

278 (10.9)12x⌀26 (1.02)

22.5 (49.61)

250

425 (16.7)

32 (1.26)

370 (14.6)

335 (13.2)

12x⌀30 (1.18)

33.5 (73.9)300

485 (19.1)

34 (1.34)

430 (16.9)

395 (15.6)

16x⌀30 (1.18)

46.5 (102.5)

DN

D

b

K

d

L

approx. kg (lbs)15

95 (3.74)

16 (0.55)

65 (2.56)

45 (1.77)

4x⌀14 (0.55)

0.81 (1.8)

25

115 (4.53)

18 (0.71)

85 (3.35)

68 (2.68)

4x⌀14 (0.55)

1.50 (3.31)

32

140 (5.51)

18 (0.71)

100 (3.94)

78 (3.07)

4x⌀18 (0.71)

2.00 (4.41)

40

150 (5.91)

18 (0.71)

110 (4.33)

88 (3.46)

4x⌀18 (0.71)

2.50 (5.51)

50

165 (6.5)

20 (0.79)

125 (4.92)

102 (4.02)

4x⌀18 (0.71)

3.00 (6.62)

65

185 (7.28)

22 (0.87)

145 (5.71)

122 (4.80)

8x⌀18 (0.71)

4.50 (9.92)

80

200 (7.87)

24 (0.94)

160 (6.30)

138 (5.43)8x⌀18 (0.71)

5.50 (12.13)

100

235 (9.25)

24 (0.94)

190 (7.48)

162 (6.38)

8x⌀22 (0.87)

7.50 (16.54)

125

270 (10.6)

26 (1.02)

220 (8.66)

188 (7.40)

8x⌀26 (1.02)

11.0 (24.26)

150

300 (11.8)

28 (1.10)250 (9.84)

218 (8.58)

8x⌀26 (1.02)

14.5 (31.97)200

375 (14.8)

36 (1.42)

320 (12.6)

285 (11.2)

12x⌀30 (1.18)

29.0 (63.95)

250

450 (17.7)

38 (1.50)

385 (15.2)

345 (13.6)

12x⌀33 (1.30)

44.5 (98.12)300

515 (20.3)

42 (1.65)

450 (17.7)

410 (16.1)

16x⌀33 (1.30)

64.0 (141.1)

DN

D

b

K

d

L

approx. kg (lbs)25

140 (5.51)

24 (0.94)

100 (3.94)

68 (2.68)

4x⌀18 (0.71)

2.50 (5.51)

32

155 (6.10)

24 (0.94)

110 (4.33)

78 (3.07)

4x⌀22 (0.87)

3.50 (7.72)

40

170 (6.69)

26 (1.02)

125 (4.92)

88 (3.46)

4x⌀22 (0.87)

4.50 (9.92)50

180 (7.09)

26 (1.02)

135 (5.31)

102 (4.02)

4x⌀22 (0.87)

5.00 (11.03)

65

205 (8.07)

26 (1.02)

160 (6.30)

122 (4.80)

8x⌀22 (0.87)

6.00 (13.23)

PN40

PN63

Endress+Hauser

43

iTHERM ModuLine TM151

DN

D

b

K

d

L

approx. kg (lbs)80

215 (8.46)

28 (1.10)

170 (6.69)

138 (5.43)8x⌀22 (0.87)

7.50 (16.54)

100

250 (9.84)

30 (1.18)

200 (7.87)

162 (6.38)

8x⌀26 (1.02)

10.5 (23.15)

125295 (11.6)

34 (1.34)

240 (9.45)

188 (7.40)

8x⌀30 (1.18)

16.5 (36.38)

150345 (13.6)

36 (1.42)280 (11.0)

218 (8.58)

8x⌀33 (1.30)

24.5 (54.02)

200

415 (16.3)

42 (1.65)

345 (13.6)

285 (11.2)

12x⌀36 (1.42)

40.5 (89.3)

250

470 (18.5)

46 (1.81)

400 (15.7)

345 (13.6)

12x⌀36 (1.42)

58.0 (127.9)300

530 (20.9)

52 (2.05)

460 (18.1)

410 (16.1)

16x⌀36 (1.42)

83.5 (184.1)

DN

D

b

K

d

L

approx. kg (lbs)25

140 (5.51)

24 (0.94)

100 (3.94)

68 (2.68)

4x⌀18 (0.71)

2.50 (5.51)

32

155 (6.10)

24 (0.94)

110 (4.33)

78 (3.07)

4x⌀22 (0.87)

3.50 (7.72)

40

170 (6.69)

26 (1.02)

125 (4.92)

88 (3.46)

4x⌀22 (0.87)

4.50 (9.92)

50

195 (7.68)

28 (1.10)

145 (5.71)

102 (4.02)

4x⌀26 (1.02)

6.00 (13.23)

65

220 (8.66)

30 (1.18)

170 (6.69)

122 (4.80)

8x⌀26 (1.02)

8.00 (17.64)

80

230 (9.06)

32 (1.26)

180 (7.09)

138 (5.43)

8x⌀26 (1.02)

9.50 (20.95)

100

265 (10.4)

36 (1.42)

210 (8.27)

162 (6.38)

8x⌀30 (1.18)

14.0 (30.87)

125

315 (12.4)

40 (1.57)

250 (9.84)

188 (7.40)

8x⌀33 (1.30)

22.5 (49.61)

150

355 (14.0)

44 (1.73)

290 (11.4)

218 (8.58)

12x⌀33 (1.30)

30.5 (67.25)

200

430 (16.9)

52 (2.05)

360 (14.2)

285 (11.2)

12x⌀36 (1.42)

54.5 (120.2)

250

505 (19.9)

60 (2.36)

430 (16.9)345 (13.6)

12x⌀39 (1.54)

87.5 (192.9)300

585 (23.0)

68 (2.68)

500 (19.7)

410 (16.1)

16x⌀42 (1.65)

131.5 (289.9)

PN100

ASME flanges (ASME B16.5-2013)
D

b

L

f

d
K

A0029175

 22
L
d
K
D
b
f

Raised face RF

Bore diameter
Diameter of raised face
Diameter of pitch circle
Flange diameter
Total flange thickness
Height of raised face, Class 150/300: 1.6 mm (0.06 in) or from Class 600: 6.4 mm (0.25 in)

Surface quality of sealing surface Ra ≤ 3.2 to 6.3 µm (126 to 248 µin).
Class 150 1)

44

DN

D

b

K

d

L

approx. kg (lbs)1"

108.0 (4.25)

14.2 (0.56)

79.2 (3.12)

50.8 (2.00)

4x⌀15.7 (0.62)

0.86 (1.9)

1¼"

117.3 (4.62)

15.7 (0.62)

88.9 (3.50)

63.5 (2.50)

4x⌀15.7 (0.62)

1.17 (2.58)

Endress+Hauser

iTHERM ModuLine TM151

DN

D

b

K

d

L

approx. kg (lbs)

1½"

127.0 (5.00)

17.5 (0.69)

98.6 (3.88)

73.2 (2.88)

4x⌀15.7 (0.62)

1.53 (3.37)

2"

152.4 (6.00)

19.1 (0.75)

120.7 (4.75)

91.9 (3.62)

4x⌀19.1 (0.75)

2.42 (5.34)

2½"

177.8 (7.00)

22.4 (0.88)

139.7 (5.50)

104.6 (4.12)

4x⌀19.1 (0.75)

3.94 (8.69)

3"

190.5 (7.50)

23.9 (0.94)

152.4 (6.00)

127.0 (5.00)

4x⌀19.1 (0.75)

4.93 (10.87)

3½"

215.9 (8.50)

23.9 (0.94)

177.8 (7.00)

139.7 (5.50)

8x⌀19.1 (0.75)

6.17 (13.60)

4"228.6 (9.00)

23.9 (0.94)

190.5 (7.50)

157.2 (6.19)

8x⌀19.1 (0.75)

7.00 (15.44)

5"254.0 (10.0)

23.9 (0.94)

215.9 (8.50)

185.7 (7.31)

8x⌀22.4 (0.88)

8.63 (19.03)

6"

279.4 (11.0)

25.4 (1.00)

241.3 (9.50)

215.9 (8.50)

8x⌀22.4 (0.88)

11.3 (24.92)8"342.9 (13.5)

28.4 (1.12)

298.5 (11.8)

269.7 (10.6)

8x⌀22.4 (0.88)

19.6 (43.22)

10"406.4 (16.0)

30.2 (1.19)

362.0 (14.3)

323.8 (12.7)

12x⌀25.4 (1.00)

28.8 (63.50)

1)

The dimensions in the following tables are in mm (in), unless otherwise specified

Class 300
DN

D

b

K

d

L

approx. kg (lbs)1"

124.0 (4.88)

17.5 (0.69)

88.9 (3.50)

50.8 (2.00)

4x⌀19.1 (0.75)

1.39 (3.06)

1¼"

133.4 (5.25)

19.1 (0.75)

98.6 (3.88)

63.5 (2.50)

4x⌀19.1 (0.75)

1.79 (3.95)

1½"

155.4 (6.12)

20.6 (0.81)

114.3 (4.50)

73.2 (2.88)

4x⌀22.4 (0.88)

2.66 (5.87)

2"

165.1 (6.50)

22.4 (0.88)

127.0 (5.00)

91.9 (3.62)

8x⌀19.1 (0.75)

3.18 (7.01)

2½"

190.5 (7.50)

25.4 (1.00)

149.4 (5.88)

104.6 (4.12)

8x⌀22.4 (0.88)

4.85 (10.69)

3"

209.5 (8.25)

28.4 (1.12)

168.1 (6.62)

127.0 (5.00)

8x⌀22.4 (0.88)

6.81 (15.02)

3½"

228.6 (9.00)

30.2 (1.19)

184.2 (7.25)

139.7 (5.50)

8x⌀22.4 (0.88)

8.71 (19.21)

4"254.0 (10.0)

31.8 (1.25)

200.2 (7.88)

157.2 (6.19)

8x⌀22.4 (0.88)

11.5 (25.36)

5"279.4 (11.0)

35.1 (1.38)

235.0 (9.25)

185.7 (7.31)

8x⌀22.4 (0.88)

15.6 (34.4)

6"

317.5 (12.5)

36.6 (1.44)

269.7 (10.6)

215.9 (8.50)

12x⌀22.4 (0.88)

20.9 (46.08)

8"381.0 (15.0)

41.1 (1.62)

330.2 (13.0)

269.7 (10.6)

12x⌀25.4 (1.00)

34.3 (75.63)

10"444.5 (17.5)

47.8 (1.88)

387.4 (15.3)

323.8 (12.7)

16x⌀28.4 (1.12)

53.3 (117.5)

Class 600

Endress+Hauser

DN

D

b

K

d

L

approx. kg (lbs)1"

124.0 (4.88)

17.5 (0.69)

88.9 (3.50)

50.8 (2.00)

4x⌀19.1 (0.75)

1.60 (3.53)

1¼"

133.4 (5.25)

20.6 (0.81)

98.6 (3.88)

63.5 (2.50)

4x⌀19.1 (0.75)

2.23 (4.92)

1½"

155.4 (6.12)

22.4 (0.88)

114.3 (4.50)

73.2 (2.88)

4x⌀22.4 (0.88)

3.25 (7.17)2"

165.1 (6.50)

25.4 (1.00)

127.0 (5.00)

91.9 (3.62)

8x⌀19.1 (0.75)

4.15 (9.15)

2½"

190.5 (7.50)

28.4 (1.12)

149.4 (5.88)

104.6 (4.12)

8x⌀22.4 (0.88)

6.13 (13.52)

3"209.5 (8.25)

31.8 (1.25)

168.1 (6.62)

127.0 (5.00)

8x⌀22.4 (0.88)

8.44 (18.61)

3½"

228.6 (9.00)

35.1 (1.38)

184.2 (7.25)

139.7 (5.50)

8x⌀25.4 (1.00)

11.0 (24.26)

4"273.1 (10.8)

38.1 (1.50)

215.9 (8.50)

157.2 (6.19)

8x⌀25.4 (1.00)

17.3 (38.15)

5"330.2 (13.0)

44.5 (1.75)

266.7 (10.5)

185.7 (7.31)

8x⌀28.4 (1.12)

29.4 (64.83)

6"

355.6 (14.0)

47.8 (1.88)

292.1 (11.5)

215.9 (8.50)

12x⌀28.4 (1.12)

36.1 (79.6)

8"419.1 (16.5)

55.6 (2.19)

349.3 (13.8)

269.7 (10.6)

12x⌀31.8 (1.25)

58.9 (129.9)

10"508.0 (20.0)

63.5 (2.50)

431.8 (17.0)

323.8 (12.7)

16x⌀35.1 (1.38)

97.5 (214.9)

45

iTHERM ModuLine TM151

Class 900
DN

D

b

K

d

L

approx. kg (lbs)1"

149.4 (5.88)

28.4 (1.12)

101.6 (4.0)

50.8 (2.00)

4x⌀25.4 (1.00)

3.57 (7.87)

1¼"

158.8 (6.25)

28.4 (1.12)

111.3 (4.38)

63.5 (2.50)

4x⌀25.4 (1.00)

4.14 (9.13)

1½"

177.8 (7.0)

31.8 (1.25)

124.0 (4.88)

73.2 (2.88)

4x⌀28.4 (1.12)

5.75 (12.68)

2"215.9 (8.50)

38.1 (1.50)

165.1 (6.50)

91.9 (3.62)

8x⌀25.4 (1.00)

10.1 (22.27)

2½"

244.4 (9.62)

41.1 (1.62)

190.5 (7.50)

104.6 (4.12)8x⌀28.4 (1.12)

14.0 (30.87)3"

241.3 (9.50)

38.1 (1.50)

190.5 (7.50)

127.0 (5.00)

8x⌀25.4 (1.00)

13.1 (28.89)

4"292.1 (11.50)

44.5 (1.75)

235.0 (9.25)

157.2 (6.19)

8x⌀31.8 (1.25)

26.9 (59.31)

5"349.3 (13.8)

50.8 (2.0)

279.4 (11.0)

185.7 (7.31)

8x⌀35.1 (1.38)

36.5 (80.48)

6"381.0 (15.0)

55.6 (2.19)

317.5 (12.5)

215.9 (8.50)

12x⌀31.8 (1.25)

47.4 (104.5)

8"

469.9 (18.5)

63.5 (2.50)

393.7 (15.5)

269.7 (10.6)

12x⌀38.1 (1.50)

82.5 (181.9)

10"546.1 (21.50)

69.9 (2.75)

469.0 (18.5)

323.8 (12.7)

16x⌀38.1 (1.50)

122 (269.0)

Class 1500
DN

D

b

K

d

L

approx. kg (lbs)1"

149.4 (5.88)

28.4 (1.12)

101.6 (4.0)

50.8 (2.00)

4x⌀25.4 (1.00)

3.57 (7.87)

1¼"

158.8 (6.25)

28.4 (1.12)

111.3 (4.38)

63.5 (2.50)

4x⌀25.4 (1.00)

4.14 (9.13)

1½"

177.8 (7.0)

31.8 (1.25)

124.0 (4.88)

73.2 (2.88)

4x⌀28.4 (1.12)

5.75 (12.68)

2"215.9 (8.50)

38.1 (1.50)

165.1 (6.50)

91.9 (3.62)

8x⌀25.4 (1.00)

10.1 (22.27)

2½"

244.4 (9.62)

41.1 (1.62)

190.5 (7.50)

104.6 (4.12)8x⌀28.4 (1.12)

14.0 (30.87)

3"

266.7 (10.5)

47.8 (1.88)

203.2 (8.00)

127.0 (5.00)

8x⌀31.8 (1.25)

19.1 (42.12)

4"311.2 (12.3)

53.8 (2.12)

241.3 (9.50)

157.2 (6.19)

8x⌀35.1 (1.38)

29.9 (65.93)

5"374.7 (14.8)

73.2 (2.88)

292.1 (11.5)

185.7 (7.31)

8x⌀41.1 (1.62)

58.4 (128.8)

6"393.7 (15.50)

82.6 (3.25)

317.5 (12.5)

215.9 (8.50)

12x⌀38.1 (1.50)

71.8 (158.3)

8"

482.6 (19.0)

91.9 (3.62)

393.7 (15.5)

269.7 (10.6)

12x⌀44.5 (1.75)

122 (269.0)

10"584.2 (23.0)

108.0 (4.25)

482.6 (19.0)

323.8 (12.7)

12x⌀50.8 (2.00)

210 (463.0)

HG/T flanges (HG/T 20592-2009)
D

d
K

f

b

L

A0029176

 23
L
d
K
D
b
f

46

Raised face

Bore diameter
Diameter of raised face
Diameter of pitch circle
Flange diameter
Total flange thickness
Height of raised face (generally 2 mm (0.08 in)Endress+Hauser

iTHERM ModuLine TM151

PN40
DN

D

b

K

d

L

approx. kg (lbs)25

115 (4.53)

16 (0.63)

85 (3.35)

68 (2.68)

4x⌀14 (0.55)

1.50 (3.31)

40

150 (5.91)

16 (0.63)

110 (4.33)

88 (3.46)

4x⌀18 (0.71)

2.50 (5.51)

50

165 (6.5)

18 (0.71)

125 (4.92)

102 (4.02)

4x⌀18 (0.71)

3.00 (6.62)

DN

D

b

K

d

L

approx. kg (lbs)50

180 (7.09)

24 (0.95)

135 (5.31)

102 (4.02)

4x⌀22 (0.87)

5.00 (11.03)

PN63

HG/T flanges (HG/T 20615-2009)
D

b

L

f

d
K

A0029175

 24
L
d
K
D
b
f

Raised face

Bore diameter
Diameter of raised face
Diameter of pitch circle
Flange diameter
Total flange thickness
Height of raised face, Class 150/300: 2 mm (0.08 in) or from Class 600: 7 mm (0.28 in)

Surface quality of sealing surface Ra ≤ 3.2 to 6.3 µm (126 to 248 µin).
Class 150 1)
DN

D

b

K

d

L

approx. kg (lbs)1"

110.0 (4.33)

12.7 (0.5)

79.4 (3.13)

50.8 (2.00)

4x⌀16 (0.63)

0.86 (1.9)

1½"

125.0 (4.92)

15.9 (0.63)

98.4 (3.87)

73.0 (2.87)

4x⌀16 (0.63)

1.53 (3.37)

2"150 (5.91)

17.5 (0.69)

120.7 (4.75)

92.1 (3.63)

4x⌀18 (0.71)

2.42 (5.34)

1)

The dimensions in the following tables are in mm (in), unless otherwise specified

Class 300
DN

D

b

K

d

L

approx. kg (lbs)1"

125.0 (4.92)

15.9 (0.63)

88.9 (3.50)

50.8 (2.00)

4x⌀18 (0.71)

1.39 (3.06)

1½"

155 (6.10)

19.1 (0.75)

114.3 (4.50)

73 (2.87)

4x⌀22 (0.87)

2.66 (5.87)

2"165 (6.50)

20.7 (0.82)

127.0 (5.00)

92.1 (3.63)

8x⌀18 (0.71)

3.18 (7.01)

Class 600

Endress+Hauser

DN

D

b

K

d

L

approx. kg (lbs)2"

165 (6.50)

25.4 (1.00)

127.0 (5.00)

92.1 (3.63)

8x⌀18 (0.71)

4.15 (9.15)

47

iTHERM ModuLine TM151

Thermowell material, nickel-based, with flange
If the thermowell materials Alloy600 and Alloy C276 are combined with a flange processconnection, only the raised face and not the complete flange is made of the alloy for cost reasons.
This is welded onto a flange with the parent material 316L. Identified in the order code by thematerial designation Alloy600 > 316L or Alloy C276 > 316L.

1

2
A0043523

1
2

Raised face
Weld

Geometry of parts in contact
with medium

Di1
D1
D1

U

U

U

U

D1

Di1

C1

Di1

Di1

1

D2
2

D2
3

Di2

B

D1

B

B

B

Re1

Di1

D2
4

5
A0051990

1
2
3
4
5

Straight (complete length U)
Tapered (complete length U)
Tapered (over length C1)
Stepped, Re1 = 63.5 mm (2.5 in)Stepped bore diameter (Di1/Di2)

Depending on the configuration, iTHERM TS111 or TS211 inserts with different RTD and TC sensors
are available for the thermometer. For information on the assignment of inserts to certain extension
neck versions, see the "Extension neck" section.

Inserts

SensorStandard thin-film

iTHERM StrongSens

iTHERM QuickSens 1)

Wire wound

1x Pt100, 3- or 4-wireSensor design;connection method

1x Pt100, 3- or 4-wire,
mineral insulated

1x Pt100, 3- or 4-wire,
mineral insulated

Vibration resistanceof the insert tip< 3g

Enhanced vibration
resistance > 60g

48• ⌀6 mm (0.24 in),mineral insulated• ⌀3 mm (0.12 in),Teflon insulated• ⌀3 mm (0.12 in) < 3g
• ⌀6 mm (0.24 in) >60g

1x Pt100, 3- or 4wire, mineralinsulated

2x Pt100, 3-wire,
mineral insulated< 3g

Endress+Hauser

iTHERM ModuLine TM151

1)

Measuring range–50 to +400 °C(–58 to +752 °F)–50 to +500 °C(–58 to +932 °F)

Diameter

3 mm (0.12 in),
6 mm (0.24 in)

6 mm (0.24 in)–50 to +200 °C(–58 to +392 °F)–200 to +600 °C (–328 to +1 112 °F)

3 mm (0.12 in), 6 mm (0.24 in)

Recommended for immersion lengths U < 70 mm (2.76 in)

TC thermocouples

Type K

Type J

Type N

Sensor design

Mineral insulated, Alloy600
sheathed cable

Mineral insulated, stainless steel
sheathed cable

Mineral insulated, Alloy TD sheathed cable

Vibration resistanceof the insert tip
Measuring range< 3g–40 to +1 100 °C (–40 to +2 012 °F)–40 to +750 °C (–40 to +1 382 °F)–40 to +1 100 °C (–40 to +2 012 °F)

Connection type

Grounded or ungrounded

Temperaturesensitive length

Insert length

Diameter

3 mm (0.12 in), 6 mm (0.24 in)

The iTHERM inserts are available as a spare part. The insertion length (IL) depends on theimmersion length of the thermowell (U), the length of the extension neck (E), the bottom thickness(B), the length of the lagging (L) and the variable length (X). The insertion length (IL) must be taken
into consideration when replacing the unit. Formulas for calculating IL in the Mechanicalconstruction section.
For more information on the deployed insert iTHERM TS111 and TS211 with enhanced
vibration resistance and fast-response sensor, see the Technical Information (TI01014T and
TI01411T).
Spare parts currently available for your product can be found online at:
http://www.products.endress.com/spareparts_consumables. Choose the corresponding productroot. Always quote the serial number of the device when ordering spare parts! The insertion
length IL is automatically calculated using the serial number.
Surface roughness

Terminal heads

Specifications for surfaces in contact with medium
Standard surface

Ra ≤ 1.6 µm (63 µin)

Finely honed surface, buffedRa ≤ 0.76 µm (30 µin)

All terminal heads have an internal shape and size in accordance with DIN EN 50446, flat face and athermometer connection with a M24x1.5 or ½" NPT thread. All dimensions in mm (in). The sample
cable glands in the diagrams correspond to M20x1.5 connections with non-Ex polyamide cableglands. Specifications without head transmitter installed. For ambient temperatures with headtransmitter installed, see the "Environment" section.
As a special feature, Endress+Hauser offers terminal heads with optimized terminal accessibility foreasy installation and maintenance.
IP 68 = 1.83 m (6 ft), 24 h, with cable gland without cable (with plug), type 6P as per
NEMA250-2003

Endress+Hauser

49

iTHERM ModuLine TM151

TA30A

Specification

15.5 (0.6)

68.5 (2.7)

107.5 (4.23)

28
(1.1)

78 (3.1)
A0009820

TA30A with display window in coverSpecification

15.5 (0.6)

91.6 (3.61)

107.5 (4.23)

28(1.1)78 (3.1)
A0009821

TA30D

15.5 (0.6)

110 (4.3)• Degree of protection:• IP66/68 (NEMA Type 4x encl.)• For ATEX: IP66/67• Temperature: –50 to +150 °C (–58 to +302 °F) without cablegland• Material: aluminum, polyester powder coatedSeals: 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)• Display window: single-pane safety glass according to DIN
8902• Display window in cover for head transmitter with TID10
display• Ground terminal, internal and external• Available with sensors with 3-A® symbol

Specification

107.5 (4.23)

28(1.1) 78 (3.1)
A000982250• Degree of protection:• IP66/68 (NEMA Type 4x encl.)• For ATEX: IP66/67• Temperature: –50 to +150 °C (–58 to +302 °F) without cablegland• Material: aluminum, polyester powder coatedSeals: silicone• Cable entry thread: G ½", ½" NPT and M20x1.5;• Protective fitting connection: M24x1.5• Head color: blue, RAL 5012
• Cap color: gray, RAL 7035
• Weight: 330 g (11.64 oz)• Ground terminal, internal and external• Available with sensors with 3-A® symbol• Degree of protection:• IP66/68 (NEMA Type 4x encl.)• For ATEX: IP66/67• Temperature: –50 to +150 °C (–58 to +302 °F) without cablegland• Material: aluminum, polyester powder coatedSeals: 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
head cover and an additional terminal block is installed
directly on the insert.
• Head color: blue, RAL 5012
• Cap color: gray, RAL 7035
• Weight: 390 g (13.75 oz)• Ground terminal, internal and external• Available with sensors with 3-A® symbol

Endress+Hauser

iTHERM ModuLine TM151

TA30P

Specification(3.3)

114 (4.5)
41.5 (1.63)

!83

28
(1.1)
85 (3.4)
A0023477

TA30R (optionally with display window incover)

96 (3.8)

71 (2.8)
96 (3.8)*64 (2.52)

25 (1)

64 (2.52)
A0017145• Degree of protection: IP65
• Max. temperature: –40 to +120 °C (–40 to +248 °F)• Material: polyamide (PA12), antistatic
Seals: silicone• Threaded cable entry: M20x1.5• Protective fitting connection: M24x1.5• Two head transmitters can be mounted. In the standard
configuration 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)• Type of protection: intrinsic safety (G Ex ia)• Ground terminal: only internal via auxiliary terminal• Available with sensors with 3-A® symbol

Specification• Degree of protection - standard version: IP69K (NEMA Type4x encl.)Degree of protection - version with display window: IP66/68(NEMA Type 4x encl.)• Temperature: –50 to +130 °C (–58 to +266 °F) without cablegland• Material: stainless steel 316L, abrasive-blasted or polished
Seals: silicone, optional EPDM for applications free frompaint-wetting impairment substances
Display window: polycarbonate (PC)• Cable entry thread ½" NPT and M20x1.5• Weight• Standard version: 360 g (12.7 oz)• Version with display window: 460 g (16.23 oz)• Display window in cover optionally for head transmitter withdisplay TID10• Protection armature connection: M24x1.5 or ½" NPT• Ground terminal: internal as standard• Available with 3-A marked sensors• Not allowed for Class II and III applications* Dimensions of version with display window
in coverEndress+Hauser

51

iTHERM ModuLine TM151

TA30R (high version for two transmitters)

Specification• Degree of protection: IP69K (NEMA Type 4x encl.)• Temperature: –50 to +130 °C (–58 to +266 °F) without cablegland• Material: stainless steel 316L, abrasive-blasted or polished
Seals: EPDM
• Cable entry thread ½" NPT and M20x1.5• Weight: 460 g (16.23 oz)• For two head transmitter• Protection armature connection: M24x1.5 or ½" NPT• Ground terminal: internal in standard version• Not allowed for Class II and III applications• Available with 3-A marked sensors

96 (3.8)

116 (4.57)

64 (2.52)

25(1)

64 (2.52)
A0034644

52

Endress+Hauser

iTHERM ModuLine TM151

TA30H with display window in coverSpecification• Flameproof (XP) version, explosionprotected, captive screw cap, available with
one or two cable entries• Degree of protection: IP 66/68, NEMA Type4x encl.
Ex-version: IP 66/67• Temperature:–50 to +150 °C (–58 to +302 °F) for rubber
seal without cable gland (observe max.
permitted temperature of cable gland!)• Material:• Aluminum; polyester powder coated• Stainless steel 316L without coating• Klüber Syntheso Glep 1 dry-film lubricant• Display window: single-pane safety glass
according to DIN 8902
• Thread: ½" NPT, ¾" NPT, M20x1.5, G½"• Extension neck/thermowell connection:
M20x1.5 or ½" NPT• Color of aluminum head: blue, RAL 5012
• Color of aluminum cap: gray, RAL 7035
• Weight:• Aluminum approx. 860 g (30.33 oz)• Stainless steel approx. 2 900 g (102.3 oz)• Head transmitter optionally available with
TID10 display

20.5 (0.8)

115 (4.53)

125 (4.92)

28
(1.1)

78 (3.01)

A0009831

and housing base and lubricate if
necessary (Recommended lubricant:Klüber Syntheso Glep 1)

3

1

the housing cover is unscrewed: Before
 Iftightening,clean the thread in the cover2
A0044217

 25
1
2
3

Endress+Hauser

Terminal head used as field housing with display
frontal mounted

One cable entry is used as sensor input channel with an
insert, TS211 for example
Cable entry used for wiring
The bottom entry into the housing is not available for thefield housing version

53

iTHERM ModuLine TM151

TA30H

Specification

20.5 (0.8)

89.5 (3.52)

125 (4.92)

28
(1.1)

78 (3.01)
A0009832• Flameproof (XP) version, explosion-protected, captive screw
cap, available with one or two cable entries• Degree of protection: IP 66/68, NEMA Type 4x encl.
Ex-version: IP 66/67• Temperature: –50 to +150 °C (–58 to +302 °F) for rubber seal
without cable gland (observe max. permitted temperature ofcable gland!)• Material:• Aluminum with polyester powder coating• Stainless steel 316L without coating• Klüber Syntheso Glep 1 dry-film lubricant• Thread: ½" NPT, ¾" NPT, M20x1.5, G½"• Extension neck/thermowell connection: M20x1.5 or ½" NPT• Color of aluminum head: blue, RAL 5012
• Color of aluminum cap: gray, RAL 7035
• Weight:• Aluminum: approx. 640 g (22.6 oz)• Stainless steel: approx. 2 400 g (84.7 oz)
housing cover is unscrewed: Before tightening, clean
 Ifthethethreadin the cover and housing base and lubricate if
necessary (Recommended lubricant: Klüber Syntheso Glep
1)

TA30EB

Specification

70.2 (2.76)

17.5 (0.69)

89.2 (3.51)

36.4 (1.43)
71.4 (2.81)
118.4 (4.66)
A0038414• Screw cap• Degree of protection: IP 66/68, NEMA 4x• Temperature: –50 to +150 °C (–58 to +302 °F)• Material: aluminum; polyester powder coating; Klüber
Syntheso Glep 1 dry-film lubricant• Thread: M20x1.5• Extension neck/thermowell connection: NPT ½"• Color of head: blue, RAL 5012
• Color of cap: gray, RAL 7035
• Weight: approx. 400 g (14.11 oz)• Ground terminal: internal and external
the housing cover is unscrewed: Before tightening, Ifclean
the thread in the cover and housing base andlubricate if necessary (Recommended lubricant: Klüber
Syntheso Glep 1)

TA30EB with display window in coverSpecification

17.5 (0.69)

93.2 (3.67)

89.2(3.51)

36.4 (1.43)
71.4 (2.81)
118.4 (4.66)
A0038428• Screw cap• Degree of protection: IP 66/68, NEMA 4x
Ex-version: IP 66/68• Temperature: –50 to +150 °C (–58 to +302 °F) for rubber seal
without cable gland (observe max. permitted temperature ofcable gland!)• Material: aluminum; polyester powder coating; Klüber
Syntheso Glep 1 dry-film lubricant• Display window: single-pane safety glass according to DIN
8902• Thread: ½" NPT, ¾" NPT, M20x1.5, G½"• Extension neck/thermowell connection: ½" NPT• Color of head: blue, RAL 5012
• Color of cap: gray, RAL 7035
• Weight: approx. 400 g (14.11 oz)
housing cover is unscrewed: Before tightening, clean
 Ifthethethreadin the cover and housing base and lubricate if
necessary (Recommended lubricant: Klüber Syntheso Glep
1)

54

Endress+Hauser

iTHERM ModuLine TM151

40
50

60

KE
E

30

GH
TI

°C

10

T WH

EN CIRC

AL

100

E
IV

P
EX

70

IV
LOS

0

UIT

IN

112 (4.41)

E ATMOS
PH
E

40

E

20

Specification• Separate electronics compartment and connection
compartment• Protection class: IP67, NEMA type 4x• Material: Die-cast aluminum housing AlSi10Mg withpowder coating on polyester base or stainless steel 316L
• Display rotatable in 90° increments• Cable entry: 2x ½" NPT• Brilliant backlit display with ease of visibility in brightsunshine or pitch darkness• Gold plated terminals to avoid corrosion and additional
measurement errors• SIL certification as per IEC 61508:2010 (HART-protocol)• Integrated surge arrester to prevent damage fromovervoltage, optionalP

R

Temperature field transmitter iTEMP TMT162

110 (4.33)

132.5 (5.22)*
A0024608* Dimensions without display = 112 mm (4.41 in)Endress+Hauser

55

iTHERM ModuLine TM151

Temperature field transmitter iTEMP TMT142B

Specification

132 (5.2)

40

50

121 (4.8)

135 (5.3)

30
20

°F

10
0

!
(0 6.4.2
5)• Protection class: IP66/67, NEMA type 4x• Material: Die-cast aluminum housing
AlSi10Mg with powder coating on polyester
base or stainless steel 316L
• Display rotatable in 90° increments• Integrated Bluetooth® interface for wirelessmeasured value display and parameter
configuration, optional• Bright backlit display with ease of visibility inbright sunshine or pitch darkness• Gold plated terminals to avoid corrosion andadditional measurement errors• Integrated overvoltage protection for theprevention of damage from overvoltage,
optional

112 (4.4)
121 (4.8)

106 (4.2)
A0025824

Cable glands and connectors 1)
Degree ofprotection

Temperature range

Suitable cable diameter

IP68–30 to +95 °C(–22 to +203 °F)

7 to 12 mm (0.27 to 0.47 in)½" NPT, ¾" NPT,
M20x1.5(optionally 2x
cable entry)

IP68–40 to +100 °C(–40 to +212 °F)½" NPT,
M20x1.5(optionally 2x
cable entry)

IP69K–20 to +95 °C(–4 to +203 °F)

Cable gland for dust ignition-proof area, ½" NPT,
polyamide
M20x1.5

IP68–20 to +95 °C(–4 to +203 °F)

Cable gland for dust ignition-proof area, M20x1.5
brass

IP68 (NEMA Type –20 to +130 °C
4x)(–4 to +266 °F)

M12 plug, 4-pin, 316 (PROFIBUS® PA,
Ethernet-APL, IO-Link®)

IP67

Type
Cable gland, polyamide blue (indicationof Ex-i circuit)

Cable gland, polyamide

56

Suitable forcable entry½" NPT½" NPT,
M20x1.5–40 to +105 °C(–40 to +221 °F)

5 to 9 mm (0.19 to 0.35 in)-Endress+Hauser

iTHERM ModuLine TM151

Suitable forcable entryType

M20x1.5

M12 plug, 8-pin, 316
7/8" plug, 4-pin, 316 (FOUNDATION ™
Fieldbus, PROFIBUS® PA)
1)½" NPT,
M20x1.5

Degree ofprotection

Temperature range

Suitable cable diameter

IP67–30 to +90 °C(–22 to +194 °F)

-

IP67

–40 to +105 °C(–40 to +221 °F)-

Depending on product and configuration

For explosion proof thermometers no cable glands are assembled.

Extension neck

The extension neck is the part between the thermowell and the terminal head. The term E is used todescribe the length of the removable extension neck.
Different versions of the removable extension neck are possible.
Removable extension neck according DIN 43772
The removable extension neck according to DIN has a threaded connection on both sides. If thethermometer has a thermowell, the connection is designed according to the 'Pre-defined versions'section. If the thermometer does not have a thermowell, and is intended for installation in a separate
thermowell, the thread for the thermowell connection can be selected (feature 50: process/thermowell connection)

U

U

T

E

GC

2

E

1

A0052000

1
2

Removable extension neck - thermometer without thermowell, insert TS111
Removable extension neck - thermometer with thermowell, insert TS111

Removable extension neck as QuickNeck
If the thermometer does not have a thermowell, select the QuickNeck (upper half) or QuickNeck
option (feature 30: Thermometer structure). The length of the removable extension neck ispredetermined by the chosen design here.

Endress+Hauser578 (0.32)

Hd

8 (0.32)

Hd

1

E
Hd

GC

3

T

4

8 (0.32)

U (T)

E
Hd

2

NPT ½“U

M14x1.5
M18x1.5G½“

43(1.69)

U

U

U

E

E

E

E

Hd

Hd
8 (0.32)

iTHERM ModuLine TM151

5

6
A0052002

1
2
3
4
5
6

iTHERM QuickNeck - upper half - for installation in an existing thermowell with iTHERM QuickNeck
according to DIN standard
iTHERM QuickNeck - upper half - for installation in an existing thermowell with iTHERM QuickNeck
according to ASME standard
iTHERM QuickNeck complete, for installation in an existing thermowell according to DIN standard
iTHERM QuickNeck complete, for installation in an existing thermowell according to ASME standard
iTHERM QuickNeck installed in thermowell according to DIN standard
iTHERM QuickNeck installed in thermowell according to ASME standard

E

U

T

NPT ½“

8 (0.32)

U

T

GC

U

M14x1.5
M18x1.5G½“

8(0.32)

E

E = 56
(2.2)

Hd

Hd
8 (0.32)

Removable extension neck as 'second process seal'
The removable extension neck can be designed as a second process seal. The length of the removable
extension neck is predetermined by the chosen design here.

2

1

3
A0052026

1
2
3

58

Extension neck with second process seal without a thermowell
Extension neck with second process seal with a thermowell according to DIN standard
Extension neck with second process seal with a thermowell according to ASME standard

Endress+Hauser

iTHERM ModuLine TM151

Removable extension neck as nipple connection• The removable extension neck can be designed as a nipple connection. In this case, the connectionis always an NPT ½" thread. The nipple directly on the terminal head is part of the TS211 insert inthis case. The length of the nipple is not variable. It is 35 mm (1.38 in) as the standard version and
47 mm (1.85 in) as a lamination nipple version for Ex d applications.
• For the nipple-union connection, an NPT ½" female thread is used for the connection to thethermowell. The nipple directly on the terminal head is part of the TS211 insert in this case. The
overall length is not variable. It is 93 mm (3.66 in) as the standard version and 105 mm (4.13 in)
as a lamination nipple version for Ex d applications.
• In the case of the nipple-union-nipple connection, the nipple directly on the terminal head is partof the TS211 insert. The overall length is not variable. It is 142 mm (5.6 in) as the standard
version and 154 mm (6.06 in) as the version for Ex d applications. In the case of this connection,
the length of the second nipple can be configured if required.
2

1

3

E
E

TL

E
U

TL
TL

65
(2.56)

T

T

A0045381

1
2
3

Extension neck type N (nipple) NPT ½"
Extension neck type NU (nipple-union) NPT ½" female thread
Extension neck type NUN (nipple-union-nipple) NPT ½", the length of the lower nipple can be configured

As illustrated in the following diagram, the length of the extension neck can influence thetemperature in the terminal head. This temperature must remain within the limit values defined inthe "Operating conditions" section.

Endress+Hauser

59

iTHERM ModuLine TM151

Heating∆T in K
140
120
100
80

Process temperature

60

570 °C (1060 °F)
40
400 °C (752 °F)20

220 °C (428 °F)

0
75

100

125

150

175

200

225

250 mm

3

4

5

6

7

8

9

10 in

Extension neck / lagging length
A0045611

 26

Heating of the terminal head as a function of the process temperature. Temperature in terminal head =ambient temperature 20 °C (68 °F)+ ΔT

The diagram can be used to calculate the transmitter temperature.
Example: At a process temperature of 220 °C (428 °F) and with a lagging length of
100 mm (3.94 in), the heat conduction is 40 K (72 °F). The transmitter temperature is therefore
40 K (72 °F) plus the ambient temperature, e.g. 25 °C (77 °F): 40 K (72 °F) + 25 °C (77 °F) =65 °C (149 °F).
Result: The temperature of the transmitter is OK; the length of the lagging is sufficient.
Extension neck with second process seal
A special version of the extension neck is available with a second process seal, which can be placed
as an optional component between the thermowell and the terminal head. In the event of athermowell failure, no process medium will enter the terminal head or the wiring circuit. The process
medium is held in the thermowell. A pressure switch emits a signal if the pressure in the component
with the second process seal increases in order to alert the maintenance personnel to a dangerous
situation. Measurement can continue for a short transition period, depending on the pressure,temperature and process medium, until the thermowell is replaced.
Transmitter connection:• An Endress+Hauser iTEMP TMT82 temperature transmitter with two channels and HART®
protocol is used. One channel converts the signals of the temperature sensor to a 4 to 20 mA
signal. The second channel uses the sensor breakage detection function in the thermocouple
configuration and transmits this failure information via the HART® protocol if the pressure switch
is activated. Other configurations are possible on request.
• An Endress+Hauser iTEMP TMT86 temperature transmitter with two channels and PROFINET®
protocol are used.A channel converts the temperature sensor signals for the PROFINET®
communication. The second channel uses the sensor breakage detection function and transmits
this failure information via the PROFINET® protocol if the pressure switch is activated.

60

Endress+Hauser

iTHERM ModuLine TM151

1

2
3
4
5
A0038482

 27
1
2
3
4
5

Extension neck with second process seal

Terminal head with built-in temperature transmitter
Housing with dual cable entry. A suitable cable gland is installed for the cable entry of the pressure switch.
The second cable entry is not assigned.
Second process seal
Installed pressure switch
Upper part of the thermowell

Maximum pressure

200 bar (2 900 psi)

Switch point

3.5 bar (50.8 psi)±1 bar (±14.5 psi)

Ambient temperature
range–20 to +80 °C (–4 to +176 °F)

Process temperature
range

Up to +400 °C (+752 °F), minimum required length of extension neck T =100 mm (3.94 in)

Seal material

FKM

During the design phase, pay attention to the significantly lower pressure resistance of thethermowell and process connection as well as the resistance of the seal material to the process
medium!
The primary thermowell, whose material can be selected from various stainless steels or nickelbased materials, represents the first process seal. The resistance of the thermowell material to theprocess conditions must be guaranteed. The extension neck represents the second process seal. The
process here is sealed off from the environment by means of seals made of FKM. The resistance ofthe seal material to the process conditions must be guaranteed.
Recommendation: Due to the aging of the internal seals, we recommend replacing thecomponents of the second process seal every five years, even if no fault has occurred in thethermowell. In the event of a leak in the thermowell, the components of the second process sealmust be replaced along with the thermowell. If, as a result of the leak in the first process seal,
the pressure in the extension neck rises above the switching pressure of the pressure switch,
the transmitter transmits a "sensor break" error message to the control system via HART®
communication.
Pre-defined versions

Endress+Hauser

Pre-defined standard geometries apply if no other options for special geometries are selected in
the optional configuration section.

61

iTHERM ModuLine TM151

Ge1
De1

D2

Di

D1

Thermometer with thermowell according to ASME standard

B

A0052234

The pre-defined geometries are the result of combining the thermowell standard, the process connection and the geometry of the wettedparts.
Thermowellstandard

Processconnection

Flange 1"/
DN25

Metric ASME
with flange

Flange 1½"/
DN40

Flange 2"/
DN50

Geometry ofwetted parts

Root ⌀ D1

Tip ⌀ D2

Straight

19 mm(0.75 in)

19 mm
(0.75 in)Tapered22.2 mm(0.87 in)

15 mm
(0.6 in)

Stepped

19 mm(0.75 in)12.7 mm(0.5 in)

Straight

19 mm(0.75 in)

19 mm
(0.75 in)Tapered

27 mm(1.06 in)

17 mm
(0.67 in)

Stepped

19 mm(0.75 in)12.7 mm(0.5 in)

Straight

19 mm(0.75 in)

19 mm
(0.75 in)Tapered

27 mm(1.06 in)

17 mm
(0.67 in)

Stepped

19 mm(0.75 in)12.7 mm(0.5 in)

Straight
NPT ½", G ½",
M20 malethreadTaperedNPT ¾" malethreadNPT 1", malethreadM27x2

62

BottomFlange face Thermome
thickness B
terconnection
Ge1

Lagging-⌀
De1

6.5 mm(0.26 in)

6 mm
(0.24 in)RF

NPT ½"

32 mm(1.26 in)

6.5 mm(0.26 in)

6 mm
(0.24 in)RF

NPT ½"

32 mm(1.26 in)

6.5 mm(0.26 in)

6 mm
(0.24 in)RF

NPT ½"

32 mm(1.26 in)

6.5 mm(0.26 in)

6 mm
(0.24 in)-

NPT ½"

30 mm(1.18 in) 1)

6.5 mm(0.26 in)

6 mm
(0.24 in)-

NPT ½"

30 mm(1.18 in) 1)

6.5 mm(0.26 in)

6 mm
(0.24 in)-

NPT ½"

35 mm(1.38 in)

6.5 mm(0.26 in)

6 mm
(0.24 in)-

NPT ½"

35 mm(1.38 in)

16 mm
(0.63 in)
16 mm
(0.63 in)

SteppedMetric ASME
with thread

Bore ⌀ Di

15 mm(0.6 in)12.7 mm(0.5 in)

Straight

19 mm(0.75 in)

19 mm
(0.75 in)Tapered19.5 mm(0.77 in)

15 mm
(0.6 in)

Stepped

19 mm(0.75 in)12.7 mm(0.5 in)

Straight

22.2 mm(0.87 in)22.2 mm(0.87 in)Tapered

27 mm(1.06 in)

17 mm
(0.67 in)

Stepped22.2 mm(0.87 in)12.7 mm(0.5 in)

Straight

19 mm(0.75 in)

19 mm
(0.75 in)Endress+Hauser

iTHERM ModuLine TM151

Thermowellstandard

Processconnection

Geometry ofwetted parts

Root ⌀ D1

Tip ⌀ D2

Tapered19.5 mm(0.77 in)

15 mm
(0.6 in)

Stepped

19 mm(0.75 in)12.7 mm(0.5 in)

Straight

22.2 mm(0.87 in)22.2 mm(0.87 in)Tapered

27 mm(1.06 in)

17 mm
(0.67 in)

Stepped22.2 mm(0.87 in)12.7 mm(0.5 in)

NPS ¾" ,26.7 mmTapered26.7 mm(1.05 in)

17 mm
(0.67 in)

NPS 1" ,33.4 mmTapered33.4 mm(1.31 in)

20 mm
(0.79 in)

Straight

19 mm(0.75 in)

19 mm
(0.75 in)Tapered22.2 mm(0.87 in)

15 mm
(0.6 in)

Stepped

19 mm(0.75 in)12.7 mm(0.5 in)

Straight

25.4 mm(1.0 in)25.4 mm(1.0 in)Tapered25.4 mm(1.0 in)

15 mm(0.6 in)

Stepped22.2 mm(0.87 in)12.7 mm(0.5 in)

M33x2

Metric ASME
for weld-in

NPS ¾",
26.7 mm
Metric ASME
with socket
weld
NPS 1" ,33.4 mm1)
2)

Bore ⌀ Di

BottomFlange face Thermome
thickness B
terconnection
Ge1

Lagging-⌀
De1

6.5 mm(0.26 in)

6 mm
(0.24 in)-

NPT ½"

40 mm(1.57 in) 2)

6.5 mm(0.26 in)

6 mm
(0.24 in)-

NPT ½"

6.5 mm(0.26 in)

6 mm
(0.24 in)-

NPT ½"

26.7 mm

6.5 mm(0.26 in)

6 mm
(0.24 in)-

NPT ½"

33.4 mm

26.7 mm
33.4 mm

27 mm (1.06 in) for material: carbon steel and CrMo steel/Mo steel
50 mm (1.97 in) for material: carbon steel and alloy

Ge1

Di

D2

C1
D1

De1

Thermometer with thermowell according to DIN standard

B

A0052237

Endress+Hauser

63

iTHERM ModuLine TM151

The pre-defined geometries are the result of combining the thermowell standard and the selected extension neck including thethermometer connection
Thermowellstandard

DIN 43772
Form 4F,
flangedExtensionneckStandard

QuickNeck orwith second
process seal

DIN 43772
Form 4, weldinStandard

QuickNeck orwith second
process seal1)

Geometry ofwetted parts

TaperedRoot ⌀ D1

Tip ⌀ D2

Bore ⌀ Di

BottomFlange face Thermome
thickness B
terconnection
Ge1

18 mm
(0.71 in)

9 mm
(0.35 in)

3.5 mm(0.14 in) 1)

M14x1.5

18 mm(0.71 in)

24 mm
(0.95 in)12.5 mm(0.5 in)

6.5 mm(0.26 in)M18x1.5

24 mm(0.95 in)

26 mm
(1.02 in)12.5 mm(0.5 in)

6.5 mm(0.26 in)

G ½"

26 mm
(1.02 in)

24 mm
(0.95 in)12.5 mm(0.5 in)

6.5 mm(0.26 in)M18x1.5

24 mm(0.95 in)

18 mm
(0.71 in)

9 mm
(0.35 in)

3.5 mm(0.14 in) 1)

M14x1.5

18 mm(0.71 in)

24 mm
(0.95 in)12.5 mm(0.5 in)

6.5 mm(0.26 in)M18x1.5

24 mm(0.95 in)

26 mm
(1.02 in)12.5 mm(0.5 in)

6.5 mm(0.26 in)

G ½"

26 mm
(1.02 in)

24 mm
(0.95 in)12.5 mm(0.5 in)

6.5 mm(0.26 in)M18x1.5

24 mm(0.95 in)

B1

6 mm
(0.24 in)-Lagging-⌀
De1

For L > 110 mm (4.33 in), a stepped bore is used: (6.5 mm (0.26 in) > 3.5 mm (0.14 in)Length combination according to DIN 43772
Form 4, weld-in

Form 4 F, flanged, standard extension neckL = 110 mm (4.3 in), C1 = 65 mm (2.56 in)

L = 200 mm (7.87 in), U = 130 mm (5.12 in), C1 =65 mm (2.56 in)

L = 110 mm (4.3 in), C1 = 73 mm (2.87 in)

L = 260 mm (10.24 in), U = 190 mm (7.5 in), C1 =125 mm (4.92 in)

L = 140 mm (5.51 in), C1 = 65 mm (2.56 in)

L = 410 mm (16.14 in), U = 340 mm (13.39 in), C1 =275 mm (10.83 in)

L = 170 mm (6.7 in), C1 = 133 mm (5.24 in)
L = 200 mm (7.87 in), C1 = 125 mm (4.92 in)

Di2

Di1

D1

D2

Ge1

De1

Thermometer with thermowell according to NAMUR standard

B

A0052239

64

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iTHERM ModuLine TM151

The pre-defined geometries result from the thermowell standard
Thermowellstandard

Processconnection size

Geometry ofwetted parts

Root ⌀ D1

Tip ⌀ D2

Bore-⌀ Di(Di1 > Di2)

Bottomthickness B

Flange face

Thermomet
erconnection
Ge1

Metric, based on
NAMUR NE170,
flangedFlange DN25DN80

Tapered

20 mm(0.79 in)

13 mm
(0.51 in)

Stepped,
7 mm(0.28 in)>
6.1 mm(0.24 in)

7 mm
(0.28 in)

B1

Male thread
M24x1.5,
adjustable

Ge1

D2

Di

De1

D1

Thermometer with iTHERM TwistWell thermowellB

Nozzlelength UL
A0052240

The pre-defined geometry results from the iTHERM TwistWell (version: 30 mm (1.18 in)).
Thermowell
type

Processconnection
size

Geometry ofwetted parts

Root ⌀ D1

Tip ⌀ D2

Bore ⌀ Di

BottomFlange face Thermome
thickness B
terconnection
Ge1

iTHERM
TwistWell,
flangedEveryselectableflange size

Unstreamed
length30 mm(1.18 in)

22 mm
(0.87 in)

6.5 mm(0.26 in)

6 mm
(0.24 in)

1)

B1/RF

NPT ½" 1)

Lagging-⌀
De1

30 mm
(1.18 in)According to feature 030, or NPT1/2" if not defined

Certificates and approvals
Current certificates and approvals for the product are available at www.endress.com on the relevant
product page:

Test on thermowellEndress+Hauser

1.

Select the product using the filters and search field.

2.

Open the product page.

3.

Select Downloads.

Thermowell pressure tests are carried out in accordance with the specifications in DIN 43772. With
regard to thermowells with tapered or reduced tips that do not comply with this standard, these aretested using the pressure of corresponding straight thermowells. Sensors for use in hazardous areas
are also always subjected to a comparative pressure during the tests. Tests according to otherspecifications can be carried out on request. The liquid penetration test verifies that there are no
cracks in the welded seams of the thermowell.

65

iTHERM ModuLine TM151

Ordering information
Detailed ordering information is available from your nearest sales organizationwww.addresses.endress.com or in the Product Configurator at www.endress.com:
1.

Select the product using the filters and search field.

2.

Open the product page.

3.

Select Configuration.
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 asmeasuring 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

Accessories
The accessories currently available for the product can be selected at www.endress.com:

Service-specific accessories

1.

Select the product using the filters and search field.

2.

Open the product page.

3.

Select Spare parts & Accessories.

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:
https://portal.endress.com/webapp/applicator
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 your country -> Click "Products" -> Select the product using the filters and the search field ->Open the product page -> The "Configure" button to the right of the product image opens the ProductConfigurator.
DeviceCare SFE100
Configuration tool for HART, PROFIBUS and FOUNDATION Fieldbus field devices
DeviceCare is available for download at www.software-products.endress.com. You need to register inthe Endress+Hauser software portal to download the application.
Technical Information TI01134S
FieldCare SFE500
FDT-based plant asset management tool
It can configure all smart field units in your system and helps you manage them. By using the status
information, it is also a simple but effective way of checking their status and condition.
Technical Information TI00028S

66

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iTHERM ModuLine TM151

Netilion
IIoT ecosystem: Unlock knowledge
With the Netilion IIoT ecosystem, Endress+Hauser enables you to optimize plant performance,
digitize workflows, share knowledge, and enhance collaboration. Drawing on decades of experiencein process automation, Endress+Hauser provides the process industry with an IIoT ecosystem that
unlocks valuable insights from data. These insights allow process optimization, leading to increased
plant availability, efficiency, and reliability - ultimately resulting in a more profitable plant.
www.netilion.endress.com

Supplementary documentation
The following types of documentation are available on the product pages and in the Download Areaof the Endress+Hauser website (www.endress.com/downloads) (depending on the selected device
version):Document

Purpose and content of the document

Technical Information (TI)

Planning aid for your device
The document contains all the technical data on the device and provides
an overview of the accessories and other products that can be ordered forthe device.

Brief Operating Instructions (KA)

Guide that takes you quickly to the 1st measured value
The Brief Operating Instructions contain all the essential informationfrom incoming acceptance to initial commissioning.

Operating Instructions (BA)Your reference document
The Operating Instructions contain all the information that is required invarious phases of the life cycle of the device: from product identification,
incoming acceptance and storage, to mounting, connection, operationand commissioning through to troubleshooting, maintenance anddisposal.

Description of Device Parameters(GP)

Reference for your parameters
The document provides a detailed explanation of each individual
parameter. The description is aimed at those who work with the device
over the entire life cycle and perform specific configurations.

Safety Instructions (XA)

Depending on the approval, Safety Instructions (XA) are supplied with thedevice. The Safety Instructions are an integral part of the Operating
Instructions.
on the Safety Instructions (XA) that are relevant for Information
the device is provided on the nameplate.

Supplementary device-dependent
documentation (SD/FY)

Endress+Hauser

Always comply strictly with the instructions in the relevant
supplementary documentation. The supplementary documentation is an
integral part of the device documentation.

67

*71657871*
71657871

www.addresses.endress.com