Endress+Hauser iTEMP TMT82 User manual

Operating Instructions
iTEMP® TMT82
Dual-input temperature transmitter
BA01028T/09/EN/14.12
71198558
Valid as of version
01.00 (device version)

iTEMP® TMT82
2 Endress+Hauser
Brief overview
For quick and straightforward commissioning:
Safety instructions (® ä 6)
t
Installation instructions (® ä 10)
t
Wiring (® ä 15)
t
Display and operating elements (® ä 20)
t
Commissioning (® ä 30)
Commissioning using the HART® communication interface - Quick start for device
configuration for standard operation
Customer-specific configuration (® ä 51)
Complex measurement tasks require the configuration of additional functions, which the
user can select, set and adapt to his/her process conditions by setting the appropriate device
parameters. A detailed description of all functions and device parameters.

iTEMP® TMT82 Table of contents
Endress+Hauser 3
Table of contents
1 Important document information ..... 4
1.1 About this document ..................... 4
1.2 Document conventions .................... 4
2 Basic safety instructions .............. 6
2.1 Requirements for the personnel .............. 6
2.2 Designated use .......................... 6
2.3 Operational safety ........................ 6
3 Identification ....................... 7
3.1 Device designation ....................... 7
3.2 Scope of delivery ........................ 8
3.3 Certificates and approvals .................. 8
4 Installation instructions ............. 10
4.1 Incoming acceptance, transport, storage ........ 10
4.2 Installation conditions .................... 10
4.3 Installation instructions ................... 10
4.4 Post-installation check .................... 14
5 Wiring ............................ 15
5.1 Quick wiring guide ...................... 15
5.2 Connecting the sensor cables ............... 16
5.3 Connecting the power supply and signal cables .. 17
5.4 Shielding and grounding .................. 18
5.5 Post-connection check ................... 19
6 Operating options .................. 20
6.1 Overview of operation options .............. 20
6.2 Structure and function of the operating menu .... 21
6.3 Measured value display and operating elements .. 23
6.4 Access to the operating menu via the operating
tool ................................ 25
7Integrating the transmitter via HART®
protocol ........................... 28
7.1 HART device variables and measured values ..... 28
7.2 Device variables and measured values ......... 29
8 Commissioning .................... 30
8.1 Function check ........................ 30
8.2 Switching on the transmitter ............... 30
8.3 Enabling configuration .................... 30
9 Maintenance ...................... 30
10 Accessories ........................ 30
10.1 Optional accessories ..................... 31
10.2 Communication-specific accessories .......... 31
10.3 System components and data manager ......... 32
11 Diagnostics and troubleshooting ..... 33
11.1 Troubleshooting ........................ 33
11.2 Diagnostics events ...................... 35
11.3 Spare parts ............................ 38
11.4 Return .............................. 38
11.5 Disposal ............................. 38
11.6 Software history and overview of compatibility ... 39
12 Technical data ..................... 40
13 Operating menu and parameter
description ........................ 51
13.1 "Display/operation" menu ................. 57
13.2 "Setup" menu .......................... 61
13.3 "Diagnostics" menu ...................... 72
13.4 "Expert" menu ......................... 80
Index .................................. 96

Important document information iTEMP® TMT82
4 Endress+Hauser
1 Important document information
1.1 About this document
1.1.1 Document function
These Operating Instructions contain all the information that is required in various phases of the
life cycle of the device: from product identification, incoming acceptance and storage, to
mounting, connection, operation and commissioning through to troubleshooting, maintenance
and disposal.
1.1.2 Additional standard documentation on the device
Document Purpose and content of the document
Technical Information
TI01010T/09/en
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 for the
device.
Brief Operating Instructions
KA01095T/09/en
Guide that takes you quickly to the 1st measured value
The Brief Operating Instructions contain all the essential information from
incoming acceptance to initial commissioning.
The document types listed are available:
•On the CD supplied with the device
•In the Download Area of the Endress+Hauser Internet site: www.endress.com ®
Download
1.1.3 Safety Instructions (XA)
When using in hazardous areas, the national safety requirements must be met. Separate Ex
documentation is contained in these Operating Instructions for measurement systems that are to
mounted in hazardous areas. Strict compliance with the installation instructions, ratings and
safety instructions as listed in this supplementary documentation is mandatory. Ensure you are
using the correct Ex documentation for the relevant Ex-approved device. The number of the
related Ex documentation (XA...) is indicated on the nameplate. You can use this Ex
documentation if the two numbers (i.e. in the Ex documentation and on the nameplate) are
identical.
1.2 Document conventions
1.2.1 Safety symbols
Symbol Meaning
DANGER
A0011189-EN
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result
in serious or fatal injury.
CAUTION
A0011191-EN
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result
in minor or medium injury.
NOTICE
A0011192-EN
NOTE!
This symbol contains information on procedures and other facts which do not result in
personal injury.

iTEMP® TMT82 Important document information
Endress+Hauser 5
1.2.2 Electrical symbols
Symbol Meaning
A0011197
Direct current
A terminal to which DC voltage is applied or through which direct current flows.
A0011198
Alternating current
A terminal to which alternating voltage (sine-wave) is applied or through which alternating current flows.
)
A0011200
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a grounding system.
*
A0011199
Protective ground connection
A terminal which must be connected to ground prior to establishing any other connections.
A0011201
Equipotential connection
A connection that has to be connected to the plant grounding system: This may be a potential
equalization line or a star grounding system depending on national or company codes of practice.
1.2.3 Symbols and notation for certain types of information
Symbol Meaning
A0011182
Allowed
Indicates procedures, processes or actions that are allowed.
A0011183
Preferred
Indicates procedures, processes or actions that are preferred.
A0011184
Forbidden
Indicates procedures, processes or actions that are forbidden.
A0011193
Tip
Indicates additional information.
A0011194
Reference to documentation
Refers to the corresponding device documentation.
A0011195
Reference to page
Refers to the corresponding page number.
A0011196
Reference to graphic
Refers to the corresponding graphic number and page number.
1., 2., 3. Series of steps
ÃResult of a sequence of actions
1.2.4 Symbols and notation in graphics
Symbol Meaning
1,2,3 ... Item numbers
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
-
A0011187
Hazardous area
Indicates a hazardous area.
.
A0011188
Safe area (non-hazardous area)
Indicates a non-hazardous area.

Basic safety instructions iTEMP® TMT82
6 Endress+Hauser
2 Basic safety instructions
2.1 Requirements for the 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)
►Following instructions and basic conditions
The operating personnel must fulfill the following requirements:
►Being instructed and authorized according to the requirements of the task by the facility's
owner-operator
►Following the instructions in these Operating Instructions
2.2 Designated use
The device is a universal and user-configurable temperature transmitter with either one or two
sensor inputs for a resistance thermometer (RT), thermocouples (TC), resistance and voltage
transmitters. The head transmitter version of the device is intended for mounting in a flat-face
terminal head as per DIN EN 50446. It is also possible to mount the device on a DIN rail using
the optional DIN rail clip. The device is also optionally available in a version suitable for DIN rail
mounting as per IEC 60715 (TH35).
The manufacturer is not liable for damage caused by improper or non-designated use.
2.3 Operational safety
►Operate the device in proper technical condition and fail-safe condition only.
►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 in accordance with EN
61010, the EMC requirements of IEC/EN 61326 and NAMUR Recommendation NE 21 and NE
89.
NOTICE
►The unit must only be powered by a power supply that operates using an energy-limited
electric circuit that is compliant with IEC 61010-1, "SELV or Class 2 circuit".

iTEMP® TMT82 Identification
Endress+Hauser 7
3 Identification
3.1 Device designation
The following options are available for identification of the device:
• Nameplate specifications
•Enter the serial number from the nameplate in 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.
3.1.1 Nameplate
The right device?
Compare and check the data on the nameplate of the device against the requirements of the
measuring point:
123
45
11-42V 012345678910
xx.yy.zz
TMT82- XXXXX/XX
iTEMP®
Made in Germany 2011
D-87484 Nesselwang
Ser.no.:
FW:
Input:
12345678ABCDEFGH
12345678ABCDEFGH
Current consum.: 23,6 mA Dev.Rev: 1
Ext. ord. cd.:
XXXXXXXXXXXXX#
II3G Ex nA II T6/T5/T4 Ta= -40 ...+ 55/70/85°C
II3G Ex nL IIC T6/T5/T4 Ta= -40 ... +55/70/85°C
EH 08.001X
Install per XA00102R/09/a3/xx.xx
6
0044
A0014561
å 1 Nameplate of the head transmitter (example, Ex version)
1 Power supply, current consumption and extended order code
2 Serial number, device revision and firmware version
3 Approvals with symbols
4 2 lines for the TAG name
5 Approval in hazardous area with number of the relevant Ex documentation (XA...)
6 Order code and manufacturer ID

Identification iTEMP® TMT82
8 Endress+Hauser
1
2
3
4
5
6
0044
iTEMP®TMT82
Made in Germany 2012 D-87484 Nesselwang
TAGXXXXXXXXXXX
TAGXXXXXXXXXXX
FW: XX.XX.XX Dev. Rev.: X
Order code: TMT82-xxx/xx
Ext. ord. cd.: XXXXXXXXXXX
Ser. no.: XXXXXXXXX
Input: 12-42 V
Current cunsum.: 23,0 mA
1
II3G Ex nA II T6/T5/T4 Ta= -40 ...+ 55/70/85°C
II3G Ex nL IIC T6/T5/T4 Ta= -40 ... +55/70/85°C
EH 08.001X
Install per XA0xxxxT/09/a3/xx.xx
7
A0017924
å 2 Nameplate of DIN rail transmitter (example, Ex version)
1 Product description and manufacturer ID
2 Order code, extended order code and serial number
3 Power supply and current consumption
4 Approval in hazardous area with number of the relevant Ex documentation (XA...)
5 Firmware version and device version
6 Approval logos
7 2 lines for the TAG name
3.2 Scope of delivery
The scope of delivery of the device comprises:
•Temperature transmitter
• Mounting material (head transmitter)
• Hard copy of multi-language Brief Operating Instructions
• Operating Instructions and additional documentation on CD-ROM
•Additional documentation for devices which are suitable for use in hazardous areas (0 1),
such as Safety Instructions (XA), Control or Installation Drawings (ZD).
3.3 Certificates and approvals
The device left the factory in a safe operating condition. The device complies with the standards
EN 61 010-1 "Protection Measures for Electrical Equipment for Measurement, Control,
Regulation and Laboratory Procedures" and with the EMC requirements of IEC/EN 61326.
3.3.1 CE mark, Declaration of Conformity
The device therefore meets the legal requirements of the EC guidelines. The manufacturer
confirms that the device is compliant with the relevant guidelines by applying the CE mark.
3.3.2 HART® protocol certification
The temperature transmitter is registered by HART® Communication. The device meets the
requirements of the HART Communication Protocol Specifications, April 2001, Revision 6.0.
3.3.3 Registered trademarks
• HART®
Registered trademark of the HART® Communication Foundation
• iTEMP®
Registered trademark of Endress+Hauser Wetzer GmbH + Co. KG, Nesselwang, D

iTEMP® TMT82 Identification
Endress+Hauser 9
An overview of other approvals and certifications is provided in the "Technical data"
section(® ä 50).

Installation instructions iTEMP® TMT82
10 Endress+Hauser
4 Installation instructions
4.1 Incoming acceptance, transport, storage
4.1.1 Incoming acceptance
• Is the packaging or content damaged?
• Is the delivery complete? Compare the scope of delivery against the information on your order
form.
4.1.2 Transport and storage
• Pack the device in such a way as to protect it reliably against impact for storage (and
transportation). The original packaging provides optimum protection.
• Permitted storage temperature:
– Head transmitter: –50 to +100 °C (–58 to +212 °F)
– DIN rail transmitter: –40 to +100 °C (–40 to +212 °F)
4.2 Installation conditions
4.2.1 Dimensions
The dimensions of the device are provided in the "Technical data" section. (® ä 40).
4.2.2 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(® ä 30)
• DIN rail transmitter:
Designed for mounting on DIN rail (IEC 60715 TH35).
It is also possible to mount the device on a DIN rail as per IEC 60715 using the DIN rail clip
accessory (® ä 30).
Information about the conditions (such as the ambient temperature, degree of protection, climate
class etc.) that must be present at the installation point so that the device can be mounted
correctly, is provided in the "Technical data" section(® ä 40).
When using in hazardous areas, the limit values of the certificates and approvals must be
observed (see Ex Safety Instructions).
4.3 Installation instructions
A Phillips head screwdriver is required to mount the head transmitter.
NOTICE
Do not overtighten the mounting screws as this could damage the head transmitter.
►Maximum torque = 1 Nm (¾ pound-feet).

iTEMP® TMT82 Installation instructions
Endress+Hauser 11
4.3.1 Mounting the head transmitter
1
2
3
4
5
6
7
9
8
1 2 3 4 5
123 4
Item A Item B
Item C
A0014269-EN
å 3 Head transmitter mounting (three versions)
Item A Mounting in a terminal head (terminal head flat face as per DIN 43729)
1 Terminal head
2 Circlips
3 Insert
4 Connection wires
5 Head transmitter
6 Mounting springs
7 Mounting screws
8 Terminal head cover
9 Cable entry
Procedure for mounting in a terminal head, pos. 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 again (8) tightly.(® ä 15)
Item B Mounting in a field housing
1 Field housing cover
2 Mounting screws with springs

Installation instructions iTEMP® TMT82
12 Endress+Hauser
Item B Mounting in a field housing
3 Head transmitter
5 Field housing
Procedure for mounting in a field housing, pos. B:
1. Open the cover (1) of the field housing (4).
2. Guide the mounting screws (2) through the lateral bores of the head transmitter (3).
3. Screw the head transmitter to the field housing.
4. After wiring, close the field housing cover (1) again. (® ä 15)
Item C Mounting on DIN rail (DIN rail as per IEC 60715)
1 Mounting screws with springs
2 Head transmitter
3 Circlips
4 DIN rail clip
5 DIN rail
Procedure for mounting on a DIN rail, pos. 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).
Mounting typical of North America
123 4 5
6
5
6
A0008520
å 4 Head transmitter mounting
1 Protection tube
2 Insert
3 Adapter, coupling
4 Terminal head
5 Head transmitter
6 Mounting screws
Thermometer design with thermocouples or RTD sensors and head transmitter:

iTEMP® TMT82 Installation instructions
Endress+Hauser 13
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
and transmitter with one another (® ä 15).
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.
Mounting the display on the head transmitter
A0009852
å 5 Mounting the display
1. Loosen the screw on the terminal head cover. Flip back the terminal head cover.
2. Remove the cover of the display connection area.
3. Fit the display module onto the mounted and wired head transmitter. The fastening pins
must click securely into place on the head transmitter. After mounting, securely tighten the
terminal head cover.
The display can only be used with the appropriate terminal heads - cover with viewing
window (e.g. TA30 from Endress+Hauser).

Installation instructions iTEMP® TMT82
14 Endress+Hauser
4.3.2 Mounting the DIN rail transmitter
A0017821
å 6 Mounting the DIN rail transmitter
1. Slide the upper DIN rail clip upwards and the lower clip downwards until they click into
place.
2. Fit the device on the DIN rail from the front.
3. Slide the two DIN rail clips back together until they click into place.
4.4 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.)?
See 'Technical data'
section(® ä 40)

iTEMP® TMT82 Wiring
Endress+Hauser 15
5 Wiring
!CAUTION
►Switch off power supply before installing or connecting the device. Failure to observe this may
result in destruction of parts of the electronics.
►When installing Ex-approved devices in a hazardous area please take special note of the
instructions and connection schematics in the respective Ex documentation added to these
Operating Instructions. Your supplier is available for assistance if required.
►Do not occupy the display connection. An incorrect connection can destroy the electronics.
A Phillips head screwdriver is required to wire the head transmitter with screw terminals. A flat-
bladed screwdriver must be used for the version with spring terminals and for the DIN rail
transmitter.
NOTICE
Do not overtighten the screw terminals, as this could damage the transmitter.
►Maximum torque = 1 Nm (¾ pound-feet).
For wiring a mounted head transmitter, proceed as follows:
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 (® ä 15). If the head transmitter is fitted with spring
terminals, pay particular attention to the information in the "Connecting to spring terminals"
section" (® ä 17).
4. Retighten the cable gland and close the housing cover.
In order to avoid connection errors always take note of the hints given in the section "connection
check"!
5.1 Quick wiring guide
Terminal assignment of head transmitter
-
+
+
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/
service interface
TC, mV
RTD, 4-, 3- and 2-wire:Ω
RTD, 3- and 2-wire:Ω
TC, mV
white
red
red
white
white
red
red
A0007285-EN
å 7 Wiring the head transmitter

Wiring iTEMP® TMT82
16 Endress+Hauser
Terminal assignment of DIN rail transmitter
-
+
A
TMT82
ON
6
37 48 5
1/+ 2/- Test
8
7
6
5
6
4
3
1
2
Sensor input 2 Sensor input 1
Supply voltage
4...20 mA
HART
connection
®
Test
RTD, 3- and 2-wire:Ω RTD, 4-, 3- and 2-wire:Ω
white
red
red
white
white
red
red
TC, mV
TC, mV
A0017807-EN
å 8 Assignment of terminal connections for DIN rail device
A To check the output current, an amperemeter (DC measurement) can be connected between the "Test" and "-" terminals.
To operate the device via the HART® protocol (terminals 1 and 2), a minimum load of 250 W is
required in the signal circuit.
NOTICE
►ESD - electrostatic discharge. Protect the terminals from electrostatic discharge. Failure to
observe this may result in destruction or malfunction of parts of the electronics.
5.2 Connecting the sensor cables
Terminal assignment of the sensor terminals(® å 7, ä 15).
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   -Â
RTD or resistance
transmitter, 3-wire   -Â
RTD or resistance
transmitter, 4-wire - - - -
Thermocouple (TC),
voltage transmitter ÂÂÂÂ

iTEMP® TMT82 Wiring
Endress+Hauser 17
5.2.1 Connecting to spring terminals
A flat-bladed screwdriver, size 3 mm is required.
A B C D
A0008322
å 9 Spring terminal connection
Pos. A, solid wire:
1. Strip wire end. Min. stripping length 10 mm (0.39 in).
2. Insert the wire end into the terminal (A).
3. Pull the wire gently to ensure it is connected correctly. Repeat from step 1 if necessary.
Pos. B, fine-strand wire without ferrule:
1. Strip wire end. Min. stripping length 10 mm (0.39 in).
2. Operate lever opener with tool (B).
3. Insert the wire end into the terminal (B).
4. Release lever opener.
5. Pull the wire gently to ensure it is connected correctly. Repeat from step 1 if necessary.
Pos. C and D, releasing the connection:
1. Operate lever opener with tool (C).
2. Remove wire from terminal (D).
3. Release lever opener.
When connecting flexible cables and spring terminals, it is not recommended to use ferrules.
5.3 Connecting the power supply and signal cables
!CAUTION
►Switch off power supply before installing or connecting the transmitter. Failure to observe this
may result in destruction of parts of the electronics.
Cable specification
•A normal device cable suffices if only the analog signal is used.
• A shielded cable is recommended for HART® communication. Observe grounding concept
of the plant.
Please also observe the general procedure on (® ä 15).

Wiring iTEMP® TMT82
18 Endress+Hauser
*
*
1 2 3
4
2- 1+
2-
1+
*
2-1+
5
6
7
4
5
7
A0017841
å 10 Connecting the signal cables and power supply
1 Head transmitter installed in field housing
2 Head transmitter installed in terminal head
3 DIN rail transmitter mounted on DIN rail
4Terminals for HART® protocol and power supply
5 Internal ground connection
6 External ground connection
7Shielded signal cable (recommended for HART® protocol)
• The terminals for connecting the signal cable (1+ and 2-) are protected against reverse
polarity.
•Conductor cross-section:
– Max. 2.5 mm2 for screw terminals
– max. 1.5 mm2 for spring terminals. Min. stripping length of wire 10 mm (0.39 in).
5.4 Shielding and grounding
Optimum electromagnetic compatibility (EMC) 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. A
shield coverage of 90% is ideal.
• To ensure an optimum EMC protective effect when communicating with HART®, connect the
shield as often as possible to the reference ground.
• For reasons of explosion protection, you should refrain from grounding however.
To comply with both requirements, three different types of shielding are possible when
communicating with HART®:
• 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
Experience shows that the best results with regard to EMC are achieved in most cases in
installations with one-sided shielding on the feed side (without capacitance termination at the
field device). Appropriate measures with regard to input wiring must be taken to allow
unrestricted operation when EMC interference is present. These measures have been taken into
account for this device. Operation in the event of disturbance variables as per NAMUR NE21 is
thus guaranteed. Where applicable, national installation regulations and guidelines must be
observed during the installation! Where there are large differences in potential between the
individual grounding points, only one point of the shielding is connected directly with the
reference ground. In systems without potential equalization, therefore, cable shielding of fieldbus
systems should only be grounded on one side, for example at the supply unit or at safety barriers.

iTEMP® TMT82 Wiring
Endress+Hauser 19
-.
12
3
4
A0014463
å 11 Shielding and grounding the signal cable at one end with HART® communication
1 Optional grounding of the field device, isolated from cable shielding
2 Grounding of the cable shield at one end
3 Supply unit
4Grounding point for HART® communication cable shield
NOTICE
If the shielding of the cable is grounded at more than one point in systems without
potential matching, power supply frequency equalizing currents can occur that damage
the signal cable or have a serious effect on signal transmission.
►In such cases the shielding of the signal cable is to be grounded on only one side, i.e. it must
not be connected to the ground terminal of the housing (terminal head, field housing). The
shield that is not connected should be insulated!
5.5 Post-connection check
Device condition and specifications Notes
Is the device or cable undamaged (visual check)? --
Electrical connection Notes
Does the supply voltage match the specifications on the
nameplate?
Head transmitter: U = 11 to 42 VDC
DIN rail transmitter: U = 12 to 42 VDC
Do the cables have adequate strain relief? --
Are the power supply and signal cables correctly
connected?
(® ä 15)
Are all the screw terminals well tightened and have the
connections of the spring terminals been checked?
--
Are all the cable entries installed, tightened and sealed? --
Are all housing covers installed and firmly tightened? --

Operating options iTEMP® TMT82
20 Endress+Hauser
6 Operating options
6.1 Overview of operation options
1
2
45
7
6
3
ON
OFF
1
2
4
8
16
32
64
HW
SW
ADDR
SIM
WRITE LOCK
DISPL. 180°
8
A0014460
å 12 Operating options of the head transmitter
1 PLC (programmable logic control)
2 Transmitter power supply unit, e.g. RN221N (with communication resistor)
3Connection for HART® modem Commubox FXA191, FXA195
4 Field Communicator 375, 475
5 Computer with operating tool (e.g. FieldCare, AMS Device Manager, SIMATIC PDM)
6HART® modem Commubox FXA191 (RS232) or FXA195 (USB)
7 Commubox FXA291 (USB) or TXU10 (USB) for connecting to the CDI interface
8 Temperature transmitter as head transmitter or DIN rail device, onsite operation via DIP switches on the rear of
the optional display possible only for head transmitter
For the head transmitter, display and operating elements are available locally only if the head
transmitter was ordered with a display unit!