Endress+Hauser iTEMP TMT82 User manual

Products Solutions Services
Operating Instructions
iTEMP TMT82
Dual-input temperature transmitter
BA01028T/09/EN/17.17
71355027
Valid as of version
01.01 (device version)

iTEMP TMT82 Table of contents
Endress+Hauser 3
Table of contents
1 Important document information .... 4
1.1 Function of document and how to use ........ 4
1.2 Symbols .............................. 4
1.3 Tool symbols .......................... 6
1.4 Further standard device documentation ...... 6
1.5 Registered trademarks ................... 6
2 Basic safety instructions ............ 7
2.1 Requirements for the personnel ............ 7
2.2 Designated use ........................ 7
2.3 Operational safety ...................... 7
3 Identification ....................... 8
3.1 Device designation ...................... 8
3.2 Scope of delivery ....................... 9
3.3 Certificates and approvals ................ 9
4 Installation ....................... 11
4.1 Incoming acceptance, transport, storage ..... 11
4.2 Installation conditions .................. 11
4.3 Installation .......................... 11
4.4 Post-installation check .................. 16
5 Wiring ............................ 17
5.1 Quick wiring guide ..................... 17
5.2 Connecting the sensor cables ............. 18
5.3 Connecting the power supply and signal
cables .............................. 19
5.4 Shielding and grounding ................ 20
5.5 Post-connection check .................. 21
6 Operating options ................. 22
6.1 Overview of operation options ............ 22
6.2 Structure and function of the operating
menu .............................. 23
6.3 Measured value display and operating
elements ............................ 25
6.4 Access to the operating menu via the
operating tool ........................ 27
7 Integrating the transmitter via the
HART® protocol ................... 30
7.1 HART device variables and measured values .. 30
7.2 Device variables and measured values ....... 31
7.3 Supported HART® commands ............. 31
8 Commissioning .................... 33
8.1 Post-installation check .................. 33
8.2 Switching on the transmitter ............. 33
8.3 Enabling configuration .................. 33
9 Maintenance ...................... 33
10 Accessories ....................... 34
10.1 Device-specific accessories ............... 34
10.2 Communication-specific accessories ........ 34
10.3 Service-specific accessories ............... 35
10.4 System components .................... 35
11 Diagnostics and troubleshooting ... 37
11.1 Troubleshooting ...................... 37
11.2 Diagnostics events ..................... 39
11.3 Spare parts .......................... 42
11.4 Return .............................. 43
11.5 Disposal ............................ 43
11.6 Software history and overview of
compatibility ......................... 43
12 Technical data .................... 44
13 Operating menu and parameter
description ........................ 60
13.1 "Setup" menu ......................... 66
13.2 "Diagnostics" menu ..................... 86
13.3 "Expert" menu ........................ 94
Index ................................. 112

Important document information iTEMP TMT82
4 Endress+Hauser
1 Important document information
1.1 Function of document and how to use
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 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.
1.1.3 Functional safety
Please refer to Safety Manual SD01172T/09 for the use of approved devices in
protective systems according to IEC 61508.
1.2 Symbols
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.
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.

iTEMP TMT82 Important document information
Endress+Hauser 5
Symbol Meaning
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
Result 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 the non-hazardous area.

Important document information iTEMP TMT82
6 Endress+Hauser
1.3 Tool symbols
Symbol Meaning
A0011220
Flat blade screwdriver
A0011219
Crosstip screwdriver
A0011221
Allen key
A0011222
Open-ended wrench
A0013442
Torx screwdriver
1.4 Further standard device documentation
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:
In the Download Area of the Endress+Hauser Internet site: www.endress.com →
Download
1.5 Registered trademarks
HART®
Registered trademark of the HART® FieldComm Group

iTEMP TMT82 Basic safety instructions
Endress+Hauser 7
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 (RTD), 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 as per EN 61010-1,
the EMC requirements as per the IEC/EN 61326 series and the NAMUR recommendations
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".

Identification iTEMP TMT82
8 Endress+Hauser
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 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.
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:
12 3
45
11-42V 012345678910
xx.yy.zz
TMT82- XXXXX/XX
iTEMP
Made in Germany 2016
D-87484 Nesselwang
Ser.no.:
FW:
Input:
12345678ABCDEFGH
12345678ABCDEFGH
Current consum.: 23,6 mA Dev.Rev: x
Ext. ord. cd.:
XXXXXXXXXXXXX#
EH 08.001X
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
Install per XA00102R/09/a3/xx.xx
6
0044
7
A0014561
 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 Data Matrix 2D code
4 2 lines for the TAG name
5 Approval in hazardous area with number of the relevant Ex documentation (XA...)
6 Approvals with symbols
7 Order code and manufacturer ID

iTEMP TMT82 Identification
Endress+Hauser 9
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
 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
• Functional Safety Manual (SIL mode)
• Additional documentation for devices which are suitable for use in the hazardous area
(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
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.
3.3.1 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.
3.3.2 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 7.4).

Identification iTEMP TMT82
10 Endress+Hauser
3.3.3 Functional safety
The two device versions (head transmitter/DIN rail device) are optionally available for use
in safety systems as per IEC 61508.
• SIL 2: Hardware version
• SIL 3: Software version

iTEMP TMT82 Installation
Endress+Hauser 11
4 Installation
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→  44.
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→  34
• DIN rail transmitter:
Designed for mounting on DIN rail (IEC 60715 TH35).
It is also possible to mount the head transmitter on a DIN rail as per IEC 60715 using
the DIN rail clip →  34accessory.
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→  44.
When using in hazardous areas, the limit values of the certificates and approvals must be
observed (see Ex Safety Instructions).
4.3 Installation
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).

Installation iTEMP TMT82
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4.3.1 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
A0014269-EN
 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→  17, close the terminal head cover (8) tightly again.

iTEMP TMT82 Installation
Endress+Hauser 13
Item B Mounting in a field housing
1 Field housing cover
2 Mounting screws with springs
3 Head transmitter
5 Field housing
120 mm
(4.72 in)
140 mm
(5.51 in)
21 mm
(0.83 in)
!6.5 mm
(0.25 in)
A0024604
 4 Dimensions of angle bracket for wall mount (complete wall mounting set available as accessory)
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 in the head transmitter (3).
3. Screw the head transmitter to the field housing.
4. After wiring, close the field housing cover (1) →  17again.
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).

Installation iTEMP TMT82
14 Endress+Hauser
Mounting typical of North America
12 3 4 5
6
5
6
A0008520
 5 Head transmitter mounting
1 Thermowell
2 Insert
3 Adapter, coupling
4 Terminal head
5 Head transmitter
6 Mounting screws
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 →  17.
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.

iTEMP TMT82 Installation
Endress+Hauser 15
Mounting the display on the head transmitter
A0009852
 6 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 be used only with the appropriate terminal heads - cover with viewing
window (e.g. TA30 from Endress+Hauser).
4.3.2 Mounting the DIN rail transmitter
NOTICE
Wrong orientation
Measurement deviates from the maximum accuracy rating when a thermocouple is
connected and the internal reference junction is used.
‣Mount the device vertically and ensure it is oriented correctly (sensor connection at
bottom / power supply at top)!

Installation iTEMP TMT82
16 Endress+Hauser
A0017821
 7 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→  44

iTEMP TMT82 Wiring
Endress+Hauser 17
5 Wiring
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 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. Use a
suitable screwdriver.
‣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
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 in accordance with →  17. If the head transmitter is fitted
with spring terminals, pay particular attention to the "Connecting to spring terminals"
section→  19.
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, Ω 4-, 3- and 2-wire:
RTD, Ω 3- and 2-wire:
TC, mV
white
red
red
white
white
red
red
(black)
(yellow)
(black)
A0007285-EN
 8 Wiring the head transmitter

Wiring iTEMP TMT82
18 Endress+Hauser
Terminal assignment of DIN rail transmitter
-
+
A
TMT82
ON
6
3
7
4
8
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, Ω 3- and 2-wire: RTD, Ω 4-, 3- and 2-wire:
white
red
red
white
white
red
red
TC, mV
TC, mV
(black)
(black)
(yellow)
A0017807-EN
 9 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
Ω 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 connections→  8,  17.
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 TMT82 Wiring
Endress+Hauser 19
5.2.1 Connecting to spring terminals
A flat-bladed screwdriver, size 3 mm is required.
A B C D
A0008322
 10 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
LCAUTION
‣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.
• In the case of the DIN rail version, a shielded cable must be used if the sensor cable
length exceeds 30 m (98.4 ft). The use of shielded sensor cables is generally
recommended.

Wiring iTEMP TMT82
20 Endress+Hauser
Please also observe the general procedure on →  17.
*
*
1 2 3
4
2- 1+
2-
1+
*
2- 1+
5
6
7
4
5
7
A0017841
 11 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 cable
10 mm (0.39 in).
5.4 Shielding and grounding
The specifications of the HART FieldComm Group must be observed during installation.
-.
12
3
4
A0014463
 12 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