Endress+Hauser iTEMP TMT162 Technical specifications

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Brief Operating Instructions
iTEMP TMT162
Temperature field transmitter
HART® communication
These Brief Operating Instructions are not a substitute for the
Operating Instructions pertaining to the device.
Detailed information is provided in the Operating Instructions
and other documentation.
Available for all device versions via:
• Internet: www.endress.com/deviceviewer
• Smartphone/tablet: Endress+Hauser Operations app
KA00250R/09/EN/03.23-00
71629076
2023-09-20

iTEMP TMT162
2 Endress+Hauser
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0023555

iTEMP TMT162 Table of contents
Endress+Hauser 3
Table of contents
1 About this document .............................................................. 3
1.1 Function of document and how to use ....................................................... 3
1.2 Symbols ............................................................................. 4
2 Safety instructions ................................................................ 5
2.1 Requirements for the personnel ............................................................ 5
2.2 Intended use .......................................................................... 5
2.3 Workplace safety ...................................................................... 6
2.4 Operational safety ......................................................................6
2.5 Product safety ......................................................................... 6
3 Incoming acceptance and product identification ................................... 6
3.1 Incoming acceptance .................................................................... 6
3.2 Product identification ................................................................... 7
3.3 Certificates and approvals ................................................................ 8
3.4 Storage and transport ................................................................... 8
4 Mounting ......................................................................... 8
4.1 Mounting requirements ................................................................. 8
4.2 Mounting the transmitter ................................................................ 9
4.3 Post-mounting check .................................................................. 12
5 Electrical connection ............................................................ 12
5.1 Connecting requirements ............................................................... 12
5.2 Connecting the sensor .................................................................. 13
5.3 Connecting the measuring device ......................................................... 15
5.4 Special connection instructions ........................................................... 17
5.5 Ensuring the degree of protection ......................................................... 18
5.6 Post-connection check ..................................................................18
6 Operation options ............................................................... 19
6.1 Overview of operation options ............................................................ 19
6.2 Access to the operating menu via the operating tool ............................................ 22
7 Commissioning .................................................................. 22
7.1 Post-installation check ................................................................. 22
7.2 Switching on the device ................................................................. 22
8 Maintenance .................................................................... 23
8.1 Cleaning ............................................................................ 23
1 About this document
1.1 Function of document and how to use
1.1.1 Document function
The Brief Operating Instructions contain all the essential information from incoming
acceptance to initial commissioning.

About this document iTEMP TMT162
4 Endress+Hauser
1.1.2 Safety Instructions (XA)
When using in hazardous areas, the relevant national standards must be observed. Separate
Ex-specific documentation is provided for measuring systems that are used in hazardous
areas. This documentation is an integral part of these Operating Instructions. The installation
specifications, connection data and safety instructions contained therein must be strictly
observed! Make sure that you use the right Ex-specific documentation for the right device
with approval for use in hazardous areas! The number of the specific Ex documentation (XA...)
is provided on the nameplate. If the two numbers (on the Ex documentation and the
nameplate) are identical, then you may use this Ex-specific documentation.
1.1.3 Functional safety
Please refer to Safety Manual SD01632T for the use of approved devices in protective
systems according to IEC 61508.
1.2 Symbols
1.2.1 Safety symbols
DANGER
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 Electrical symbols
Symbol Meaning Symbol Meaning
Direct current Alternating current
Direct current and alternating current Ground connection
A grounded terminal which, as far as
the operator is concerned, is grounded
via a grounding system.

iTEMP TMT162 Safety instructions
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Symbol Meaning
Potential equalization connection (PE: protective earth)
Ground terminals that must be connected to ground prior to establishing any other connections.
The ground terminals are located on the interior and exterior of the device:
• Interior ground terminal: potential equalization is connected to the supply network.
• Exterior ground terminal: device is connected to the plant grounding system.
1.2.3 Symbols for certain types of information
Symbol Meaning Symbol Meaning
Permitted
Procedures, processes or actions that
are permitted.
Preferred
Procedures, processes or actions that
are preferred.
Forbidden
Procedures, processes or actions that
are forbidden.
Tip
Indicates additional information.
Reference to documentation Reference to page
Reference to graphic
,… ,
Series of steps
Result of a step Visual inspection
2 Safety instructions
2.1 Requirements for the personnel
The operating personnel must fulfill the following requirements:
‣Trained, qualified specialists: must have a relevant qualification for this specific function
and task
‣Are authorized by the plant owner/operator
‣Are familiar with federal/national regulations
‣Before beginning work, the specialist staff must have read and understood the instructions
in the manuals and supplementary documentation as well as in the certificates (depending
on the application)
‣Follow instructions and comply with basic conditions
2.2 Intended use
The device is a universal and configurable temperature field transmitter with either one or
two temperature sensor inputs for resistance thermometers (RTD), thermocouples (TC) and
resistance and voltage transmitters. The device is designed for mounting in the field.
The manufacturer is not liable for damage caused by improper or non-intended use.

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2.3 Workplace safety
When working on and with the device:
‣Wear the required personal protective equipment as per national regulations.
2.4 Operational safety
• Operate the device only if it is in proper technical condition, free from errors and faults.
• The operator is responsible for the interference-free operation of the device.
Power supply
‣The device must only be powered by a 11.5 to 42 VDC voltage supply according to NEC class
02 (low voltage/current) with short circuit power limitation to 8 A/150 VA.
Hazardous area
To eliminate a danger for persons or for the facility when the device is used in the hazardous
area (e.g. explosion protection or safety equipment):
‣Based on the technical data on the nameplate, check whether the ordered device is
permitted for the intended use in the hazardous area. The nameplate can be found on the
side of the transmitter housing.
‣Observe the specifications in the separate supplementary documentation included as an
integral part of these instructions.
Electromagnetic compatibility
The measuring system complies with the general safety requirements as per EN 61010-1, the
EMC requirements as per the IEC/EN 61326 series and the NAMUR recommendations NE 21
and NE 89.
2.5 Product safety
This measuring device is designed in accordance with good engineering practice to meet state-
of-the-art safety requirements, has been tested, and left the factory in a condition in which it
is safe to operate.
It meets general safety standards and legal requirements. It also complies with the EU
directives listed in the device-specific EU Declaration of Conformity. The manufacturer
confirms this by affixing the CE mark to the device.
3 Incoming acceptance and product identification
3.1 Incoming acceptance
Proceed as follows on receipt of the device:
1. Check whether the packaging is intact.
2. If damage is discovered:
Report all damage immediately to the manufacturer.

iTEMP TMT162 Incoming acceptance and product identification
Endress+Hauser 7
3. Do not install damaged components, as the manufacturer cannot otherwise guarantee
the material resistance or compliance with the original safety requirements, and can
also not be held responsible for the consequences that may result.
4. Compare the scope of delivery against the contents of your order.
5. Remove all the packaging material used for transportation.
6. Do the data on the nameplate match the ordering information on the delivery note?
7. Are the technical documentation and all other necessary documents provided, e.g.
certificates?
If one of the conditions is not satisfied, contact your Sales Center.
3.2 Product identification
The device can be identified in the following ways:
• Nameplate specifications
• Enter the serial number from the nameplate in the Device Viewer
(www.endress.com/deviceviewer): all data relating to the device and an overview of the
Technical Documentation supplied with the device are displayed.
• Enter the serial number on the nameplate into the Endress+Hauser Operations App or scan
the 2-D matrix code (QR code) on the nameplate with the Endress+Hauser Operations App:
all the information about the device and the technical documentation pertaining to the
device is displayed.
3.2.1 Nameplate
The right device?
The nameplate provides you with the following information on the device:
• Manufacturer identification, device designation
• Order code
• Extended order code
• Serial number
• Tag name (TAG)
• Technical values: supply voltage, current consumption, ambient temperature,
communication-specific data (optional)
• Degree of protection
• Approvals with symbols
‣Compare the information on the nameplate with the order.
3.2.2 Name and address of manufacturer
Name of manufacturer: Endress+Hauser Wetzer GmbH + Co. KG
Address of manufacturer: Obere Wank 1, D-87484 Nesselwang or www.endress.com

Mounting iTEMP TMT162
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3.3 Certificates and approvals
For certificates and approvals valid for the device: see the data on the nameplate
Approval-related data and documents: www.endress.com/deviceviewer → (enter the
serial number)
3.3.1 HART® protocol certification
• The temperature transmitter is registered by the HART® FieldComm Group. The device
meets the requirements of the HART Communication Protocol Specifications, Revision 7
(HCF 7.6).
• An overview of other approvals and certifications is provided in the Operating Instructions.
3.4 Storage and transport
Storage temperature Without display –40 to +100 °C (–40 to +212 °F)
With display –40 to +80 °C (–40 to +176 °F)
Maximum relative humidity: < 95 % as per IEC 60068-2-30
Pack the device for storage and transportation in such a way that it is reliably protected
against impact and external influences. The original packaging provides the best
protection.
Avoid the following environmental influences during storage:
• Direct sunlight
• Proximity to hot objects
• Mechanical vibration
• Aggressive media
4 Mounting
If stable sensors are used, the device can be fitted directly to the sensor. For remote mounting
to a wall or stand pipe, two mounting brackets are available. The illuminated display can be
mounted in four different positions.
4.1 Mounting requirements
4.1.1 Installation point
For use in hazardous areas, the limit values specified on the certificates and approvals must be
observed (see Safety Instructions).

iTEMP TMT162 Mounting
Endress+Hauser 9
4.1.2 Important ambient conditions
Ambient temperature range • Without display: –40 to +85 °C (–40 to +185 °F)
• With display: –40 to +80 °C (–40 to +176 °F)
For use in hazardous areas, please see the Ex certificate, which is an integral part
of the product documentation.
The display may react slowly at temperatures < –20 °C (–4 °F). The
readability of the display cannot be guaranteed at temperatures <
–30 °C (–22 °F).
Altitude Up to 2 000 m (6 560 ft) above mean sea level
Overvoltage category II
Pollution degree 2
Insulation class Class III
Condensation Permitted
Climate class As per IEC 60654-1, Class C
Degree of protection Die-cast aluminum or stainless steel housing: IP67, NEMA 4X
Shock and vibration resistance 2 to 150 Hz at 3g as per IEC 60068-2-6
The use of L-shaped mounting brackets can cause resonance (see wall/
pipe 2" mounting bracket in the 'Accessories' section). Caution: vibrations
occurring directly at the transmitter may not exceed specifications.
4.2 Mounting the transmitter
NOTICE
Do not over-tighten the mounting screws, as this could damage the field transmitter.
‣Maximum torque = 6 Nm (4.43 lbf ft)

Mounting iTEMP TMT162
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4.2.1 Direct sensor mounting
12 3 4 5 6
K
E
E
P
T
I
G
H
T
W
H
E
N
C
I
R
C
U
I
T
A
L
I
V
E
I
N
E
X
P
L
O
S
I
V
E
A
T
M
O
S
P
H
E
R
E
aaa
aaa
bbb
bbb
A0024817
 1 Direct field transmitter mounting on sensor
1 Thermowell
2 Insert
3 Neck tube nipple and adapter
4 Sensor cables
5 Fieldbus cables
6 Fieldbus shielded cable
1. Mount the thermowell and screw down (1).
2. Screw the insert with the neck tube nipple and adapter into the transmitter (2). Seal the
nipple and adapter thread with silicone tape.
3. Connect the sensor cables (4) to the terminals for the sensors, see the terminal
assignment.
4. Fit the field transmitter with the insert on the thermowell (1).
5. Mount the fieldbus shielded cable or fieldbus connector (6) on the other cable gland.
6. Guide the fieldbus cables (5) through the cable gland of the fieldbus transmitter housing
into the connection compartment.
7. Screw the cable gland tight as described in the Ensuring the degree of protection
section→  18. The cable gland must meet explosion protection requirements.

iTEMP TMT162 Mounting
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4.2.2 Remote mounting
2
25 (0.98)
180
(7.1)
160
(6.3)
!51
(2.01)
M10
10.5
(0.41)
72 (2.8)
M10
M10
≤50
(1.97)
2
56
(2.2)
3
A0027188
 2 Installation of the field transmitter using the mounting bracket, see 'Accessories' section.
Dimensions in mm (in)
2 Combined wall/pipe mounting bracket 2", L-shaped, material 304
3 Pipe mounting bracket 2", U-shaped, material 316L

Electrical connection iTEMP TMT162
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4.3 Post-mounting check
After installing the device, always perform the following checks:
Device condition and specifications Notes
Is the device undamaged (visual inspection)? -
Do the ambient conditions match the device specification (e.g. ambient temperature, degree of
protection, etc.)?
→  8
5 Electrical connection
5.1 Connecting requirements
LCAUTION
The electronics could be destroyed
‣Switch off power supply before installing or connecting the device. Failure to observe this
may result in the destruction of parts of the electronics.
‣When connecting Ex-certified devices, please take special note of the instructions and
connection schematics in the Ex-specific supplement to these Operating Instructions.
Contact the supplier if you have any questions.
A Phillips head screwdriver is required to wire the field transmitter at the terminals.
NOTICE
Do not over-tighten the screw terminals, as this could damage the transmitter.
‣Maximum torque = 1 Nm (³⁄₄ lbf ft).
Proceed as follows to wire the device:
1. Remove the cover clamp.
2. Unscrew the housing cover on the connection compartment together with the O-ring .
The connection compartment is opposite the electronics module.
3. Open the cable glands of the device.
4. Route the appropriate connecting cables through the openings of the cable glands.
5. Wire the cables in accordance with →  3,  13 and as described in the sections:
"Connecting the sensor" →  13 and "Connecting the measuring device" →  15.
6. On completion of the wiring, screw the screw terminals tight. Tighten the cable glands
again. Refer to the information provided in the 'Ensuring the degree of protection'
section.
7. Clean the thread in the housing cover and housing base and lubricate if necessary.
(Recommended lubricant: Klüber Syntheso Glep 1)
8. Screw the housing cover tight again and fit the cover clamp back on.

iTEMP TMT162 Electrical connection
Endress+Hauser 13
In order to avoid connection errors always follow the instructions in the post-connection check
section before commissioning!
5.2 Connecting the sensor
NOTICE
‣ ESD - Electrostatic discharge. Protect the terminals from electrostatic discharge. Failure
to observe this may result in the destruction or malfunction of parts of the electronics.
Terminal assignment
+
-
1
2
3
4
5
6
+
-
3
4
S1
3
S2
-
+
+
-
1
3
!
2
YE (WH)
BK (RD)
BK (RD)
WH
WH RD RD
A0045944
 3 Wiring of the field transmitter, RTD, dual sensor input
1 Sensor input 1, RTD, : 2-, 3- and 4-wire
2 Sensor input 2, RTD: 2-, 3-wire
3 Field transmitter power supply and analog output 4 to 20 mA or fieldbus connection

Electrical connection iTEMP TMT162
14 Endress+Hauser
+
-
1
2
3
4
5
6
+
-
3
4
S1
3
S2
-
+
+
-
1
3
!
2
A0045949
 4 Wiring of the field transmitter, TC, dual sensor input
1 Sensor input 1, TC
2 Sensor input 2, TC
3 Field transmitter power supply and analog output 4 to 20 mA or fieldbus connection
NOTICE
When connecting 2 sensors ensure that there is no galvanic connection between the
sensors (e.g. caused by sensor elements that are not isolated from the thermowell). The
resulting equalizing currents distort the measurements considerably.
‣The sensors must remain galvanically isolated from one another by connecting each sensor
separately to a transmitter. The transmitter provides sufficient galvanic isolation (> 2 kV
AC) between the input and output.
The following connection combinations are possible when both sensor inputs are assigned:
Sensor input 1
Sensor input 2
RTD or
resistance
transmitter, 2-
wire
RTD or
resistance
transmitter, 3-
wire
RTD or
resistance
transmitter, 4-
wire
Thermocouple
(TC), voltage
transmitter
RTD or resistance
transmitter, 2-wire   - 
RTD or resistance
transmitter, 3-wire   - 
RTD or resistance
transmitter, 4-wire - - - -
Thermocouple (TC),
voltage transmitter    

iTEMP TMT162 Electrical connection
Endress+Hauser 15
5.3 Connecting the measuring device
5.3.1 Cable gland or cable entry
LCAUTION
Risk of damage
‣Switch off power supply before installing or connecting the device. Failure to observe this
may result in the destruction of parts of the electronics.
‣If the device has not been grounded as a result of the housing being installed, we
recommended grounding it via one of the ground screws. Observe the grounding concept of
the plant! Keep the cable shield between the stripped fieldbus cable and the ground
terminal as short as possible! Connection of the functional grounding may be needed for
functional purposes. Compliance with the electrical codes of individual countries is
mandatory.
‣If the shielding of the fieldbus cable is grounded at more than one point in systems without
additional potential matching, mains frequency equalizing currents can occur that damage
the cable or the shielding. In such cases, the shielding of the fieldbus cable is to be
grounded on one side only, i.e. it must not be connected to the ground terminal of the
housing. The shield that is not connected should be insulated!
• The terminals for the fieldbus connection have integrated reverse polarity protection.
• Cable cross-section: max. 2.5 mm²
• A shielded cable must be used for the connection.
Follow the general procedure. →  12.
+
-
1
2
3
4
5
6
+
-
3
4
+
-
3
1
2
3
4
A0010823
 5 Connecting the device to the fieldbus cable
1 Fieldbus terminals - fieldbus communication and power supply
2 Shielded fieldbus cable
3 Ground terminals, internal
4 Ground terminal (external, relevant for remote version)

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5.3.2 Connecting the HART® communication resistor
If the HART® communication resistor is not integrated into the power supply unit, it is
necessary to incorporate a communication resistor of 250 Ω into the 2-wire cable. For
the connection, also refer to the documentation published by the HART® FieldComm
Group, particularly HCF LIT 20: “HART, a technical summary”.
1
23
4
5
³250 W
PMC731:PIC0001
Online
1>Group Select
2 PV 0.7bar
HELP SEND HOME
67
A0033549
 6 HART® connection with other power supply units that do not have a built-in HART®
communication resistor
1 Temperature field transmitter
2 HART® communication resistor
3 PLC/DCS
4 Configuration software, e.g. FieldCare, DeviceCare
5 HART® modem
6 HART® handheld communicator
7 Configuration via Field Xpert SMT70
5.3.3 Shielding and grounding
The specifications of the HART FieldComm Group must be observed during installation.

iTEMP TMT162 Electrical connection
Endress+Hauser 17
200
1
2
3
4
A0010984
 7 Shielding and grounding the signal cable at one end with HART® communication
1 Supply unit
2 Grounding point for HART® communication cable shield
3 Grounding of the cable shield at one end
4 Optional grounding of the field device, isolated from cable shielding
5.4 Special connection instructions
If the device is fitted with a surge arrester module, the bus is connected and the power is
supplied via the screw terminals on the surge arrester module.
4
+
-
1
2
3
5
6
+
-
3
4
S1
3
S2
-
+
+
-
!
+
1
-
2
3
A0045614
 8 Electrical connection of surge arrester
1 Sensor 1
2 Sensor 2
3 Bus connection and power supply

Electrical connection iTEMP TMT162
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5.5 Ensuring the degree of protection
The device meets all the requirements of IP66/IP67 protection. Compliance with the following
points is mandatory following installation in the field or servicing in order to ensure that
IP66/IP67 protection is maintained:
• The housing seals must be clean and undamaged when inserted into their grooves. The
seals must be dried, cleaned or replaced if necessary.
• All housing screws and screw caps must be firmly tightened.
• The connecting cables used must have the specified external diameter (e.g. M20x1.5, cable
diameter 8 to 12 mm).
• Firmly tighten the cable gland. →  9,  18
• The cables must loop down before they enter the cable glands ("water trap"). This means
that any moisture that may form cannot enter the gland. Install the device so that the cable
glands are not facing upwards. →  9,  18
• Replace unused cable glands with dummy plugs.
• Do not remove the grommet from the cable gland.
A0024523
 9 Connection tips to retain IP66/IP67 protection
5.6 Post-connection check
Device condition and specifications Notes
Are the device and cables undamaged (visual check)? --
Electrical connection Notes
Does the supply voltage match the information on the
nameplate?
Standard mode and SIL mode: U = 11.5 to 42 VDC
Are the mounted cables relieved of tension? Visual inspection
Are the power supply and signal cables connected
correctly?
→  15
Are all the screw terminals sufficiently tightened? →  12
Are all the cable entries installed, tightened and leak-
tight?
→  18
Are all housing covers installed and securely tightened? →  19

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Endress+Hauser 19
6 Operation options
6.1 Overview of operation options
°C
WRITE
LOCK
ON
OFF
PMC731:PIC0001
Online
1>Group Select
2 PV 0.7bar
23
4
7
1
Proof-
Test
6
HELP SEND HOME
5
A0024548
 10 Operation options of the device
1 Hardware settings via DIP switch and proof-test button
2 HART® handheld communicator
3 PLC/DCS
4 Configuration software, e.g. FieldCare, DeviceCare
5 HART® modem
6 Configuration via Field Xpert SMT70
7 Power supply unit and active barrier, .e.g. RN22 from Endress+Hauser

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6.1.1 Measured value display and operating elements
Display elements
°C
°F %
K
10
0
20
30
40 50 60
70
80
90
100
!
1
2
3
4
5
6
7
A0034101
 11 LC display of the field transmitter (illuminated, can be plugged in in 90° steps)
Item no. Function Description
1 Bar graph display In increments of 10% with indicators for underranging and
overranging.
2 'Caution' symbol This is displayed when an error or warning occurs.
3 Unit display K, °F, °C or % Unit display for the internal measured value displayed.
4 Measured value display, digit
height 20.5 mm
Displays the current measured value. In the event of an error or
warning, the corresponding diagnostics information is displayed.
Please refer to the relevant Operating Instructions for the device
for more information.
5 Status and information display Indicates which value is currently shown on the display. Text can
be entered for every value. In the event of an error or a warning,
the sensor input that triggered the error/warning is also displayed
where applicable, e.g. SENS1
6 'Configuration locked' symbol The 'configuration locked' symbol appears when configuration is
locked via the hardware or software
7 'Communication' symbol The communication symbol appears when HART® communication
is active.
Local operation
NOTICE
‣ ESD - Electrostatic discharge. Protect the terminals from electrostatic discharge. Failure
to observe this may result in the destruction or malfunction of parts of the electronics.