Endress+Hauser iTEMP TMT85 Technical specifications

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Brief Operating Instructions
iTEMP TMT85
Dual-input temperature transmitter
These instructions are Brief Operating Instructions; they do
not replace the Operating Instructions included in the scope of
supply.
Detailed information can be found in the Operating
Instructions and the additional documentation.
Available for all device versions via:
• Internet: www.endress.com/deviceviewer
• Smart phone/tablet: Endress+Hauser Operations App
KA00252R/09/EN/05.20
71498848
2020-10-15

iTEMP TMT85
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 TMT85 Table of contents
Endress+Hauser 3
Table of contents
1 About this document .............................................................. 3
1.1 Safety Instructions (XA) ................................................................. 3
1.2 Symbols used ......................................................................... 4
1.3 Tool symbols ..........................................................................4
1.4 Registered trademarks .................................................................. 4
2 Basic safety instructions .......................................................... 4
2.1 Requirements for personnel .............................................................. 4
2.2 Intended use .......................................................................... 5
2.3 Operational safety ......................................................................5
3 Incoming acceptance and product identification ................................... 6
3.1 Incoming acceptance .................................................................... 6
3.2 Product identification ................................................................... 6
3.3 Scope of delivery ....................................................................... 7
3.4 Certificates and approvals ................................................................ 7
4 Installation ....................................................................... 8
4.1 Installation conditions ................................................................... 8
4.2 Installation ........................................................................... 8
4.3 Post-installation check ................................................................. 12
5 Electrical connection ............................................................ 12
5.1 Connection conditions .................................................................. 12
5.2 Connecting the measuring device ......................................................... 13
5.3 Post-connection check ..................................................................16
6 Operation options ............................................................... 17
6.1 Measured value display and operating elements ............................................... 17
7 Commissioning .................................................................. 18
7.1 Switching on the transmitter ............................................................. 18
1 About this document
1.1 Safety Instructions (XA)
When using in hazardous areas, compliance with national regulations is mandatory. 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 it contains 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.

Basic safety instructions iTEMP TMT85
4 Endress+Hauser
1.2 Symbols used
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.
1.3 Tool symbols
Symbol Meaning
A0011219
Phillips head screwdriver
1.4 Registered trademarks
FOUNDATION FieldbusTM
Registered trademark of the Fieldbus Foundation, Austin, Texas, USA
2 Basic safety instructions
2.1 Requirements for personnel
The personnel for installation, commissioning, diagnostics and maintenance 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 Operating Instructions and supplementary documentation as well as in the
certificates (depending on the application)
‣Follow instructions and comply with conditions

iTEMP TMT85 Basic safety instructions
Endress+Hauser 5
The operating personnel must fulfill the following requirements:
‣Operating personnel are instructed and authorized according to the requirements of the
task by the facility's owner-operator
‣Follow the instructions in this manual
2.2 Intended use
The device is a universal and configurable temperature transmitter with either one or two
sensor inputs for resistance thermometers (RTD), thermocouples (TC), and resistance and
voltage transmitters. The head transmitter version of the device is intended for mounting in a
terminal head (flat face) as per DIN EN 50446. It is also possible to mount the device on a DIN
rail using the optional DIN rail clip.
If the device is used in a manner not specified by the manufacturer, the protection provided by
the device may be impaired.
The manufacturer is not liable for damage caused by improper or non-intended use.
2.3 Operational safety
‣Operate the device only if it is in proper technical condition, free from errors and faults.
‣The operator is responsible for interference-free operation of the device.
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 that is an integral
part of these instructions.
Electromagnetic compatibility
The measuring system complies with the general safety requirements of EN 61010-1, the
EMC requirements of the IEC/EN 61326 series and NAMUR recommendation NE 21.
NOTICE
‣The device must be powered only by a power unit with an energy-limited circuit in
accordance with UL/EN/IEC 61010-1, Section 9.4 and the requirements in Table 18.

Incoming acceptance and product identification iTEMP TMT85
6 Endress+Hauser
3 Incoming acceptance and product identification
3.1 Incoming acceptance
1. Unpack the temperature transmitter carefully. Is the packaging or content free from
damage?
 Damaged components may not be installed as the manufacturer can otherwise not
guarantee compliance with the original safety requirements or the material
resistance, and can therefore not be held responsible for any resulting damage.
2. Is the delivery complete or is anything missing? Check the scope of delivery against your
order.
3. Does the nameplate match the ordering information on the delivery note?
4. Are the technical documentation and all other necessary documents provided? If
applicable: are the Safety Instructions (e.g. XA) for hazardous areas provided?
If one of these conditions is not satisfied, contact your Endress+Hauser Sales Center.
3.2 Product identification
The following options are available for identification of the device:
• Nameplate specifications
• Extended order code with breakdown of the device features on the delivery note
• Enter the serial number from the nameplate in the W@M 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?
Compare and check the data on the nameplate of the device against the requirements of the
measuring point:

iTEMP TMT85 Incoming acceptance and product identification
Endress+Hauser 7
3
11-42V 012345678910
xx.yy.zz
TMT82- XXXXX/XX
iTEMP
Made in Germany 201x
D-87484 Nesselwang
Ser.no.:
FW:
Input:
12345678ABCDEFGH
12345678ABCDEFGH
Dev.Rev: x
Ext. ord. cd.:
XXXXXXXXXXXXX#
12
4
5
6
7
A0014561
 1 Nameplate of the head transmitter (example, Ex version)
1 Power supply, current consumption and radio approval (Bluetooth)
2 Serial number, device revision, firmware version and hardware version
3 Data Matrix 2D code
4 2 lines for the TAG name and extended order code
5 Approval in hazardous area with number of the relevant Ex documentation (XA...)
6 Approvals with symbols
7 Order code and manufacturer ID
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
Address of manufacturing plant: See nameplate
3.3 Scope of delivery
The scope of delivery of the device comprises:
• Temperature transmitter
• Mounting material, optional
• Additional documentation for devices which are suitable for use in the hazardous area
(ATEX, FM, CSA)
3.4 Certificates and approvals
The device complies with the requirements of the standards EN 61 010-1 "Safety
Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use" and
with the EMC requirements as per the IEC/EN 61326 series.
3.4.1 CE/EAC mark, Declaration of Conformity
The device meets the legal requirements of the EU/EEU guidelines. The manufacturer
confirms that the device is compliant with the relevant guidelines by applying the CE/EAC
mark.
3.4.2 FOUNDATION FieldbusTM certification
The temperature transmitter successfully passed all tests and is certified and registered by the
Fieldbus Foundation. The device meets all the requirements of the following specifications:

Installation iTEMP TMT85
8 Endress+Hauser
• Certified in accordance with FOUNDATION FieldbusTM specification
• FOUNDATION FieldbusTM H1
• Interoperability Test Kit (ITK), (device certification number available on request): The device
can also be operated with certified devices of other manufacturers
• Physical Layer Conformance Test of the Fieldbus FOUNDATIONTM
4 Installation
4.1 Installation conditions
4.1.1 Mounting location
Head transmitter:
• In the terminal head, flat face, as per DIN EN 50446, direct mounting on insert with cable
entry (middle hole 7 mm)
• In the field housing, separated from the process
• With DIN rail clip on DIN rail as per IEC 60715, TH35
4.1.2 Important ambient conditions
• Ambient temperature: –40 to +85 °C (–40 to 185 °F).
• Head transmitter according to climate class C1
• Condensation permitted for head transmitter as per IEC 60068-2-33
• Max. rel. humidity: 95% as per IEC 60068-2-30
• Degree of protection:
• Head transmitter with screw terminals: IP 00, with spring terminals: IP 30. In installed
state, depends on the terminal head or field housing used.
• When installing in field housing TA30x: IP 66/68 (NEMA Type 4x encl.)
4.2 Installation
A Phillips head screwdriver is required to mount the head transmitter:
• Maximum torque for securing screws = 1 Nm (¾ foot-pound), screwdriver: Pozidriv Z2
• Maximum torque for screw terminals = 0.35 Nm (¼ foot-pound), screwdriver: Pozidriv Z1

iTEMP TMT85 Installation
Endress+Hauser 9
4.2.1 Mounting the head transmitter
1
2
3
4
5
6
7
9
8
1 2 3 4 5 1234
120 mm
(4.72 in)
120 mm
(4.72 in)
Item A Item B
Item C
A0039675-EN
 2 Head transmitter mounting (three versions)
Procedure for mounting in a terminal head, Item A:
1. Open the terminal head cover (8) on the terminal head.
2. Guide the connection wires (4) of the insert (3) through the center hole in the head
transmitter (5).
3. Fit the mounting springs (6) on the mounting screws (7).
4. Guide the mounting screws (7) through the side boreholes of the head transmitter and
the insert (3). Then fix both mounting screws with the snap rings (2).
5. Then tighten the head transmitter (5) along with the insert (3) in the terminal head.
6. After wiring, close the terminal head cover (8) tightly again.

Installation iTEMP TMT85
10 Endress+Hauser
120 mm
(4.72 in)
140 mm
(5.51 in)
21 mm
(0.83 in)
!6.5 mm
(0.25 in)
A0024604
 3 Dimensions of angle bracket for wall mount (complete wall mounting set available as accessory)
Procedure for mounting in a field housing, Item B:
1. Open the cover (1) of the field housing (4).
2. Guide the mounting screws (2) through the lateral bores in the head transmitter (3).
3. Screw the head transmitter to the field housing.
4. After wiring, close the field housing cover (1) again.
Procedure for mounting on a DIN rail, Item C:
1. Press the DIN rail clip (4) onto the DIN rail (5) until it engages with a click.
2. Fit the mounting springs on the mounting screws (1) and guide the screws through the
side boreholes of the head transmitter (2). Then fix both mounting screws with the snap
rings (3).
3. Screw the head transmitter (2) onto the DIN rail clip (4).

iTEMP TMT85 Installation
Endress+Hauser 11
Mounting typical of North America
12 3 4 5
6
5
6
A0008520
 4 Head transmitter mounting
Thermometer design with thermocouples or RTD sensors and head transmitter:
1. Fit the thermowell (1) on the process pipe or the container wall. Secure the thermowell
according to the instructions before the process pressure is applied.
2. Fit the necessary neck tube nipples and adapter (3) on the thermowell.
3. Make sure sealing rings are installed if such rings are needed for harsh environmental
conditions or special regulations.
4. Guide the mounting screws (6) through the lateral bores of the head transmitter (5).
5. Position the head transmitter (5) in the terminal head (4) in such a way that the bus
cable (terminals 1 and 2) point to the cable entry.
6. Using a screwdriver, screw down the head transmitter (5) in the terminal head (4).
7. Guide the connection wires of the insert (3) through the lower cable entry of the
terminal head (4) and through the middle hole in the head transmitter (5). Wire the
connection wires up to the transmitter .
8. Screw the terminal head (4), with the integrated and wired head transmitter, onto the
ready-mounted nipple and adapter (3).
NOTICE
The terminal head cover must be secured properly to meet the requirements for
explosion protection.
‣After wiring, securely screw the terminal head cover back on.

Electrical connection iTEMP TMT85
12 Endress+Hauser
4.3 Post-installation check
After installing the device, always run the following final checks:
Device condition and specifications Notes
Is the device undamaged (visual inspection)? -
Do the ambient conditions match the device specification (e.g. ambient temperature,
measuring range, etc.)?
→  8
5 Electrical connection
LCAUTION
‣Switch off power supply before installing or connecting the device. Failure to observe this
may result in 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.
Please contact Endress+Hauser's representative if you have any questions.
‣Do not occupy the display connection. Connecting other devices can destroy the electronics.
‣Connect the potential matching line to the outer ground terminal before applying the
power supply.
5.1 Connection conditions
A Phillips head screwdriver is required to wire the head transmitter with screw terminals. The
spring terminal version can be wired without any tools.
Proceed as follows to wire a mounted head transmitter:
1. Open the cable gland and the housing cover on the terminal head or the field housing.
2. Feed the cables through the opening in the cable gland.
3. Connect the cables as shown in . If the head transmitter is fitted with spring terminals,
pay particular attention to the information in the "Connecting to spring terminals"
section". →  14
4. Tighten the cable gland again and close the housing cover.
In order to avoid connection errors always follow the instructions in the post-connection check
section before commissioning!

iTEMP TMT85 Electrical connection
Endress+Hauser 13
5.2 Connecting the measuring device
Terminal assignment
-
+
+
1
-
2
7
6
5
4
3
1
2
7
6
5
4
3
Sensor input 2 Sensor input 1 Bus connection
and supply voltage
Display connection
TC, mV
RTD, 4-, 3- and 2-wireΩ:
RTD, 3- and 2-wireΩ:
TC, mV
white
red
red
white
white
red
red
(black)
(yellow)
(black)
A0015015-EN
 5 Terminal assignment of head transmitter
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.
5.2.1 Connecting the sensor cables
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 interfere with the measurements considerably, resulting in
false readings.
‣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,
two-wire
RTD or
resistance
transmitter,
three-wire
RTD or
resistance
transmitter,
four-wire
Thermocouple
(TC), voltage
transmitter
RTD or resistance
transmitter, two-wire   - 
RTD or resistance
transmitter, three-wire   - 

Electrical connection iTEMP TMT85
14 Endress+Hauser
Sensor input 1
RTD or resistance
transmitter, four-wire - - - -
Thermocouple (TC),
voltage transmitter    
Connecting to spring terminals
2.
3.
4.
5.
1.
2.
3.
AB
C
A0039468
 6 Spring terminal connection, using the example of a head transmitter
Item A, solid wire:
1. Strip wire end. Min. stripping length 10 mm (0.39 in).
2. Insert the wire end into the terminal.
3. Pull the wire gently to ensure it is connected correctly. Repeat from step 1 if necessary.
Item B, fine-strand wire without ferrule:
1. Strip wire end. Min. stripping length 10 mm (0.39 in).
2. Press down on the lever opener.
3. Insert the wire end into the terminal.
4. Release lever opener.
5. Pull the wire gently to ensure it is connected correctly. Repeat from step 1 if necessary.

iTEMP TMT85 Electrical connection
Endress+Hauser 15
Item C, releasing the connection:
1. Press down on the lever opener.
2. Remove the wire from the terminal.
3. Release lever opener.
5.2.2 Fieldbus connection
Fieldbus cable specification as per IEC 61158-2 (MBP), see the Operating Instructions
for details.
Devices can be connected to the fieldbus in two ways:
• Using a conventional cable gland
• Using the fieldbus connector (optional, available as an accessory)
Grounding via one of the grounding screws (terminal head, field housing) is
recommended.
Cable gland or entry
Please also observe the general procedure on →  13.
2
1
3
4
5
6
A0041953
 7 Connecting the signal cables and power supply
1 Head transmitter installed in field housing
2 Head transmitter installed in terminal head
3 Terminals for fieldbus communication and power supply
4 Internal ground connection
5 External ground connection
6 Shielded fieldbus cable
• The terminals for connecting the fieldbus (1+ and 2-) are not polarity sensitive.
• Conductor cross-section:
• Max. 2.5 mm2 for screw terminals
• Max. 1.5 mm2 for spring terminals. Min. stripping length of cable 10 mm (0.39 in).
• A shielded cable must be used for the connection.

Electrical connection iTEMP TMT85
16 Endress+Hauser
Shielding and grounding
Optimum electromagnetic compatibility (EMC) of the fieldbus system can only be guaranteed
if the system components and, in particular, the lines are shielded and the shield forms as
complete a cover as possible.
The fieldbus system permits three different types of shielding:
• Shielding at both ends
• Shielding at one end on the feed side with capacitance termination at the field device
• Shielding at one end on the feed side
The best results with regard to EMC are achieved in most cases with one-sided shielding on
the feed side (without capacitance termination at the field device). Operation in the event of
disturbance variables as per NAMUR NE21 is thus guaranteed.
A0042591
 8 Shielding and grounding of the fieldbus cable shield at one end
1 Supply unit
2 Junction box (T-box)
3 Bus termination
4 Grounding point for fieldbus cable shield
5 Optional grounding of the field device, isolated from cable shielding
5.3 Post-connection check
Device condition and specifications Notes
Are the device or cables free from damage (visual check)? --
Electrical connection Notes
Does the supply voltage match the information on the nameplate? 9 to 32 VDC

iTEMP TMT85 Operation options
Endress+Hauser 17
Device condition and specifications Notes
Do the cables used meet the required specifications? Fieldbus cable,
Sensor cable,
→  13
Do the cables have adequate strain relief? --
Are the power supply and signal cables connected correctly? →  13
Are all the screw terminals well tightened and have the connections of the spring terminals
been checked?
→  14
Are all cable entries mounted, tightened and leak-tight? --
Are all housing covers installed and firmly tightened? --
Electrical connection of the fieldbus system Notes
Are all the connecting components (T-boxes, junction boxes, connectors, etc.) connected with
each other correctly?
--
Has each fieldbus segment been terminated at both ends with a bus terminator? --
Has the max. length of the fieldbus cable been observed in accordance with the fieldbus
specifications?
Has the max. length of the spurs been observed in accordance with the fieldbus specifications?
Is the fieldbus cable fully shielded and correctly grounded?
6 Operation options
6.1 Measured value display and operating elements
6.1.1 Option: Display TID10 for head transmitter
The display may also be subsequently
ordered at any time after purchasing the
transmitter, see the 'Accessories' section in
the Operating Instructions for the device.
1. 2.
3.
A0010227
 9 Attaching the display to the transmitter

Commissioning iTEMP TMT85
18 Endress+Hauser
6.1.2 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.
ON
OFF
1
2
4
8
16
32
64
HW
SW
ADDR ACTIVE
SIM
WRITE LOCK
DISPL. 180°
1
2
3
A0014562
 10 Hardware settings via DIP switches
1: Connection to head transmitter
2: DIP switches (1 - 64, SW/HW, ADDR and SIM = simulation
mode) no function for this head transmitter
3: DIP switch (WRITE LOCK = write protection; DISPL. 180° =
switch, turn the display screen 180°)
Procedure for setting the DIP switch:
1. Open the cover of the terminal head or field housing.
2. Remove the attached display from the head transmitter.
3. Configure the DIP switch on the rear of the display accordingly. In general: switch to ON
= function enabled, switch to OFF = function disabled.
4. Fit the display onto the head transmitter in the correct position. The head transmitter
accepts the settings within one second.
5. Secure the cover back onto the terminal head or field housing.
7 Commissioning
7.1 Switching on the transmitter
Once the final checks have been successfully completed, it is time to switch on the supply
voltage. The transmitter performs a number of internal test functions after power-up. During
this process, a sequence containing device information appears on the display.
The device operates as normal after approx. 8 seconds, and the attached display after approx.
16 seconds! Normal measuring mode commences as soon as the switch-on procedure is
completed. Measured values and status values appear on the display.

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