Endress+Hauser iTHERM TrustSens TM371 User manual

Products Solutions Services
Operating Instructions
iTHERM TrustSens TM371,
TM372
Compact thermometer with self-calibration
BA01581T/09/EN/03.18
71413053
2018-08-20
Valid as of version
01.00 (device version)

iTHERM TrustSens TM371, TM372 Table of contents
Endress+Hauser 3
Table of contents
1 About this document ................ 4
1.1 Document function ..................... 4
1.2 Symbols .............................. 4
1.3 Documentation ........................ 5
2 Basic safety instructions ............ 6
2.1 Requirements for personnel ............... 6
2.2 Intended use .......................... 6
2.3 Operation safety ....................... 6
2.4 Product safety ......................... 6
3 Incoming acceptance and product
identification ....................... 7
3.1 Incoming acceptance .................... 7
3.2 Product identification .................... 7
3.3 Transport and storage ................... 9
4 Mounting ......................... 10
4.1 Mounting conditions ................... 10
4.2 Mounting the measuring device ........... 10
4.3 Post-mounting check ................... 13
5 Electrical connection .............. 14
5.1 Connecting requirements ................ 14
5.2 Connecting the device .................. 14
5.3 Ensuring the degree of protection .......... 14
5.4 Post-connection check .................. 15
6 Operability ........................ 15
6.1 Overview of operation options ............ 15
6.2 Structure and function of the operating
menu .............................. 16
6.3 Access to the operating menu via an
operating tool ........................ 17
7 System integration ................ 21
7.1 Overview of device description files ......... 21
7.2 Measured variables via HART protocol ...... 21
7.3 Supported HART® commands ............. 22
8 Commissioning .................... 24
8.1 Function check ....................... 24
8.2 Switching on the measuring device ......... 24
8.3 Configuring the measuring device .......... 24
8.4 Creating a calibration report .............. 26
8.5 Protecting settings from unauthorized
access .............................. 28
8.6 Advanced settings ..................... 29
9 Diagnostics and troubleshooting ... 35
9.1 Troubleshooting ...................... 35
9.2 Diagnostic information via LEDs ........... 35
9.3 Diagnostic information ................. 36
9.4 Overview of diagnostics events ............ 37
9.5 Diagnostic list ........................ 39
9.6 Event logbook ........................ 39
9.7 Firmware history ...................... 39
10 Maintenance ...................... 40
10.1 Cleaning ............................ 40
11 Repair ............................ 41
11.1 Spare parts .......................... 41
11.2 Return .............................. 41
11.3 Disposal ............................ 41
12 Accessories ....................... 42
12.1 Device-specific accessories ............... 42
12.2 Communication-specific accessories ........ 45
12.3 Service-specific accessories ............... 46
12.4 System components .................... 47
13 Technical Data .................... 47
13.1 Input ............................... 47
13.2 Output ............................. 47
13.3 Wiring ............................. 48
13.4 Performance characteristics .............. 49
13.5 Environment ......................... 53
13.6 Mechanical construction ................ 54
13.7 Certificates and approvals ............... 72
14 Operating menu and parameter
description ........................ 74
14.1 Setup menu .......................... 78
14.2 Calibration menu ...................... 79
14.3 Diagnostics menu ..................... 83
14.4 Expert menu ......................... 92

About this document iTHERM TrustSens TM371, TM372
4 Endress+Hauser
1 About this document
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.
1.2 Symbols
1.2.1 Safety symbols
Symbol Meaning
DANGER
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will
result in serious or fatal injury.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can
result in serious or fatal injury.
CAUTION
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can
result in minor or medium injury.
NOTICE
NOTE!
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 Electrical symbols
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.
Protective Earth (PE)
A terminal which must be connected to ground prior to establishing any other
connections.
The ground terminals are situated inside and outside the device:
• Inner ground terminal: Connects the protectiv earth to the mains supply.
• Outer ground terminal: Connects the device to the plant grounding system.
1.2.3 Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted.
Preferred
Procedures, processes or actions that are preferred.

iTHERM TrustSens TM371, TM372 About this document
Endress+Hauser 5
Symbol Meaning
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
Help in the event of a problem
Visual inspection
1.2.4 Tool symbols
Symbol Meaning
A0011222
Open-ended wrench
1.3 Documentation
For an overview of the scope of the associated Technical Documentation, refer to the
following:
•W@M Device Viewer (www.endress.com/deviceviewer): Enter the serial number
from nameplate
•Endress+Hauser Operations App: Enter the serial number from the nameplate or
scan the 2D matrix code (QR code) on the nameplate
1.3.1 Standard documentation
Document type Purpose and content of the document
Technical Information 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 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.
1.3.2 Supplementary device-dependent documentation
Additional documents are supplied depending on the device version ordered: Always
comply strictly with the instructions in the supplementary documentation. The
supplementary documentation is an integral part of the device documentation.

Basic safety instructions iTHERM TrustSens TM371, TM372
6 Endress+Hauser
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 starting work, read and understand the instructions in the manual and
supplementary documentation as well as the certificates (depending on the
application).
‣Follow instructions and comply with basic conditions.
The operating personnel must fulfill the following requirements:
‣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 compact thermometer for the acquisition and conversion of temperature
input signals for industrial temperature measurement.
• The manufacturer is not liable for damage caused by improper or non-intended use.
2.3 Operation safety
NOTICE
Operation safety
‣Operate the device in proper technical condition and fail-safe condition only.
‣The operator is responsible for interference-free operation of the device.
Conversions to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers.
‣If, despite this, modifications are required, consult with Endress+Hauser.
Repair
Due to its design, the device cannot be repaired.
‣However, it is possible to send the device in for examination.
‣To ensure continued operational safety and reliability, use original spare parts and
accessories from Endress+Hauser only.
2.4 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 EC
directives listed in the device-specific EC Declaration of Conformity. Endress+Hauser
confirms this by affixing the CE mark to the device.

iTHERM TrustSens TM371, TM372 Incoming acceptance and product identification
Endress+Hauser 7
3 Incoming acceptance and product
identification
3.1 Incoming acceptance
1. Unpack the device carefully. Is the packaging or content damaged?
 The damaged content must not be installed; in those conditions the
manufacturer cannot guarantee the original safety requirements or the material
resistance and cannot be considered as responsible for any consequent damages.
2. Is the delivery complete? Compare the scope of delivery against the information on
your order form.
3.
DELIVERY NOTE
A0028503
Do the nameplate data match the ordering information on the delivery note?
4.
TMT162
TrustSens
TM371, 372
A0028522
Are the technical documentation and additional documents (e.g. certificates)
present?
If one of the conditions does not comply, contact your Endress+Hauser distributor.
3.2 Product identification
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.

Incoming acceptance and product identification iTHERM TrustSens TM371, TM372
8 Endress+Hauser
3.2.1 Nameplate
Is this the correct device?
Compare and check the data on the nameplate of the device against the requirements of the
measuring point:
Input:
1
2
3
4
5
6
A0033853
 1 Nameplate of the compact thermometer
(example)
1 Order code, serial number
2 Device TAG name
3 Supply voltage and current consumption
4 Device revision and firmware version
5 Ambient temperature
6 Approvals with symbols
3.2.2 Scope of delivery
The scope of delivery comprises:
• Compact thermometer
• Hard copy of multi-language Brief Operating Instructions
• Ordered accessories
3.2.3 Certificates and approvals
An overview of further approvals and certifications is provided in the ’Technical data’
section. →  72
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.
Hygiene standard
• EHEDG certification, type EL - CLASS I. Permitted process connections in accordance
with EHEDG, see section 'Process connections' →  64
• 3-A authorization no. 1144, 3-A sanitary standard 74-06. Permitted process
connections in accordance with 3-A, see section 'Process connections' →  64
• ASME BPE, certificate of conformity can be ordered for indicated options
• FDA-compliant
• All product contact surfaces are produced without animal fats (TSE Certificate of
Suitability)

iTHERM TrustSens TM371, TM372 Incoming acceptance and product identification
Endress+Hauser 9
Parts in contact with the medium
Parts of the thermometer in contact with the medium comply with the following European
regulations:
• (EC) No. 1935/2004, Article 3, paragraph 1, Articles 5 and 17 on materials and articles
intended to come into contact with food.
• (EC) No. 2023/2006 on good manufacturing practice for materials and articles intended
to come into contact with food.
• (EU) No. 10/2011 on plastic materials and articles intended to come into contact with
food.
3.3 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.
Storage temperature –40 to +85 °C (–40 to +185 °F)

Mounting iTHERM TrustSens TM371, TM372
10 Endress+Hauser
4 Mounting
4.1 Mounting conditions
Information about the conditions, which have to be existent at the mounting location
for a designated use, such as ambient temperature, degree of protection, climate class,
etc., as well as device dimensions - see section 'Technical Data', →  47
The immersion length of the thermometer can influence the accuracy. If the immersion
length is too small then errors in the measurement are caused by heat conduction via the
process connection. If installing into a pipe then the immersion length should ideally be
half of the pipe diameter. →  10
• Installation possibilities: Pipes, tanks or other plant components
• Orientation: no restrictions. However, self-draining in the process must be guaranteed. If
there is an opening to detect leaks at the process connection, this opening must be at the
lowest possible point.
4.2 Mounting the measuring device
Required tools for mounting in an existing protection tube: Open-end wrench or mounting
socket wrench SW/AF 32
SW/AF 32 SW/AF 17
123
4
A0028639
 2 Mounting process of the compact thermometer
1 Mounting of iTHERM QuickNeck connection to the existing protection tube with iTHERM QuickNeck bottom
part - no tools required
2 Hexagonal head SW/AF 32 for the mounting in an existing protection tube for M24-, G3/8"-thread
3 Adjustable compression fitting TK40 - mounting of the hexagonal screw with open-end wrench SW/AF 17
only
4 Protection tube

iTHERM TrustSens TM371, TM372 Mounting
Endress+Hauser 11
U
≥3°
≥ 3°
1
2
34
A0031007
 3 Mounting possibilities in the process
1, 2 Perpendicular to flow direction, installed at a min. angle of 3° to ensure self-draining
3 On elbows
4 Inclined installation in pipes with a small nominal diameter
U Immersion length
In the case of pipes with a small nominal diameter, it is advisable for the tip of the
thermometer to project well into the process so that it extends past the pipe axis.
Installation at an angle (4) could be another solution. When determining the immersion
length or installation depth all the parameters of the thermometer and of the medium to
be measured must be taken into account (e.g. flow velocity, process pressure).
Maximum torque
1
23
4
5
M
MM
A0035951
Protection tube version TT411, 6 mm (0.24 in) (1)
TT411, 6 mm (0.24 in) and
Necktube TE411 (2)
TT411,
9 mm (0.35 in) (3)
TT411, 12.7 mm (¹⁄₂ in) (4)
TT411, 12.7 mm (¹⁄₂ in) and
Necktube TE411 (5)
Torque M 3 to 5 Nm (2.2 to 3.7 lbf ft) 10 Nm (7.4 lbf ft) 3 to 5 Nm (2.2 to 3.7 lbf ft)
When connecting the device with the protection tube: only turn the hexagonal
spanner flat on the bottom of the housing.

Mounting iTHERM TrustSens TM371, TM372
12 Endress+Hauser
12
A0031022
 4 Process connections for thermometer installation in pipes with small nominal diameters
1 Varivent® process connection type N for DN40
2 Corner piece or T-piece (illustrated) for weld-in as per DIN 11865 / ASME BPE 2012
1 2
3 4
R0.4 R0.4
Sensor with
milk pipe
connection Sensor Variventwith
connection
Shaped
gasket
Companion
connection O-ring
Groove
slip-on nut
Centering ring
Sealing
Companion
connection
Companion
connection
Gasket
(O-ring)
Welding boss
Leak detection hole
Vessel wall
A0028648-EN
 5 Detailed installation instructions for hygiene-compliant installation
1 Sanitary connection according to DIN 11851, only in connection with EHEDG-certified and self-centering
sealing ring
2 Varivent® process connection for VARINLINE® housing
3 Clamp according to ISO 2852
4 Liquiphant-M G1" process connection, horizontal installation

iTHERM TrustSens TM371, TM372 Mounting
Endress+Hauser 13
The counterpieces for the process connections and the seals or sealing rings are not
included in the scope of supply for the thermometer. Liquiphant M weld-in adapters with
associated seal kits are available as accessories. →  42
Procedure in case of seal failure indicated by leak detection port:
1. Disassembling of the thermometer, validated cleaning procedure of thread and
sealing ring groove
2. Replacement of the seal or sealing ring
3. CIP after re-assembly
In the case of weld-in connections, exercise the necessary degree of care when performing
the welding work on the process side:
• Suitable welding material
• Flush-welded or with welding radius > 3.2 mm (0.13 in)
• No recesses, folds or gaps
• Honed and polished surface, Ra ≤ 0.76 µm (0.03 µin)
As a general rule, the thermometers should be installed in such a way that does not
impact their ability to be cleaned (the requirements of the 3-A Standard must be
observed). The Varivent® and Liquiphant-M weld-in adapter and Ingold (+ weld-in
adapter) connections enable flush-mounted installation.
4.3 Post-mounting check
 Is the device undamaged (visual inspection)?
 Is the device fixed appropriately?
Does the device comply to the measurement point specifications, such as ambient temperature, etc.?
→  47

Electrical connection iTHERM TrustSens TM371, TM372
14 Endress+Hauser
5 Electrical connection
5.1 Connecting requirements
According to the 3-A Standard electrical connecting cables must be smooth,
corrosion-resistant and easy to clean.
5.2 Connecting the device
NOTICE
To prevent damage to the device
‣To prevent any kind of damage from the device electronics, leave the pins 2 and 4
unconnected. They are reserved for the connection of the configuration cable.
‣Do not tighten the M12 plug too much, in order to prevent damage to the device.
M12x1
1
12...30 VDC
(4...20 mA)
3
0 V
(4...20 mA)
4
2
AB
1 (BN) +
2 (WH) nc
3 (BU) -
4 (BK) nc
1.
2.
A0028623
 6 Cable plug M12x1 and PIN assignment of the connection socket at the device
If voltage supply is connected correctly and the measuring device is operational, the LED is
illuminated green.
5.3 Ensuring the degree of protection
The specified degree of proctection is ensured when the M12x1 cable plug is tightened. In
order to reach IP69K degree of protection, appropriate cord sets with straight or angle
plugs are available as accessories.

iTHERM TrustSens TM371, TM372 Operability
Endress+Hauser 15
5.4 Post-connection check
Is the device or cable undamaged (visual check)?
Do the cables have adequate strain relief?
Does the supply voltage match the specifications on the nameplate?
6 Operability
6.1 Overview of operation options
2 3
14 5
A0031089
 7 Operating options of the device
1Installed iTHERM compact thermometer with HART® communication protocol
2 RIA15 loop powered process display - It is integrated in the current loop and displays the measuring signal or
HART® process variables in digital form. The process display unit does not require an external power supply.
It is powered directly from the current loop.
3 Active barrier RN221N - The RN221N (24 V DC, 30 mA) active barrier has a galvanically isolated output for
supplying voltage to loop-powered transmitters. The universal power supply works with an input supply
voltage of 20 to 250 V DC/AC, 50/60 Hz, which means that it can be used in all international power grids.
4 Commubox FXA195 for intrinsically safe HART® communication with FieldCare via the USB interface.
5 FieldCare is a FDT-based plant asset management tool from Endress+Hauser, more details see section
'accessories'. The acquired self-calibration data is stored in the device (1) and can be read using FieldCare.
This also enables an auditable calibration certificate to be created and printed.

Operability iTHERM TrustSens TM371, TM372
16 Endress+Hauser
6.2 Structure and function of the operating menu
6.2.1 Structure of the operating menu
Expert
System
Communication
Operating menu for experts
Setup Device tag
Diagnostics
Operating menu for operators and maintenances
Maintenance
Expert
Output
Unit
4 mA value
20 mA value
Actual diagnostics
Operating time
Diagnostic list
Actual diagnostics count
Enter access code
Unit
4 mA value
HART configuration
HART info
HART output
Device type
Assigncurrentoutput(PV)
Event logbook
Device information
Simulation
Previous diagnostics 1
Device tag
Min/max values
Sensor value
Measured values
Sensor min v.
Device tag
Define software write protection code
Administration
Operation
Previous diagnostics 1
Loop check configuration Loop check config.
Failure mode
Calibration
Number of self calibrations
Deviation
Limits
Interval monitoring
Self calibration monitoring
Stored self calibration points
Adjustment
Calibration report
...
Diagnostic simulation
Diagnostic settings
Access status tooling
Locking status
Lower warning value
Diagnostic behavior
A0032327-EN

iTHERM TrustSens TM371, TM372 Operability
Endress+Hauser 17
Submenus and user roles
Certain parts of the menu are assigned to certain user roles. Each user role corresponds to
typical tasks within the lifecycle of the device.
User role Typical tasks Menu Content/meaning
Maintenance
Operator
Commissioning:
• Configuration of the measurement.
• Configuration of data processing (Measurement
range, etc.).
Reading measured values.
Calibration:
• Configuration of the warning and alarm limit values
as well as interval monitoring.
• Configuration and creation of a calibration report
(wizard).
"Setup"
"Calibration"
Contains all parameters for commissioning and
calibration:
•Setup parameters
Once values have been set for these parameters, the
measurement should generally be completely
configured.
•Calibration parameters
Contains all information and parameters for the self-
calibration, including a wizard for creating a
calibration report. This wizard is available in the
online parameterization.
Fault elimination:
• Diagnosing and eliminating process errors.
• Interpretation of device error messages and
correcting associated errors.
"Diagnostics" Contains all parameters for detecting and analyzing
errors:
•Diagnostic list
Contains up to 3 currently pending diagnostic
messages.
•Event logbook
Contains the last 5 diagnostic messages (no longer
pending).
•"Device information" submenu
Contains information for identifying the device.
•"Measured values" submenu
Contains all current measured values.
•"Simulation" submenu
Is used to simulate measured values or output values.
•Diagnostic settings
Configuration of diagnostic behavior and status
signal according to NE107
Expert Tasks that require detailed knowledge of the function
of the device:
• Commissioning measurements under difficult
conditions.
• Optimal adaptation of the measurement to difficult
conditions.
• Detailed configuration of the communication
interface.
• Error diagnostics in difficult cases.
"Expert" Contains all parameters of the device (including those
that are already in one of the other menus). The
structure of this menu is based on the function blocks
of the device:
•"System" submenu
Contains all higher-order device parameters that do
not pertain either to measurement or the measured
value communication.
•"Output" submenu
Contains all parameters for configuring the analog
current output and the loop check.
•"Communication" submenu
Contains all parameters for configuring the digital
communication interface.
6.3 Access to the operating menu via an operating tool
6.3.1 FieldCare
Function scope
FDT/DTM-based plant asset management tool from Endress+Hauser. It can configure all
smart field units in a system and help you manage them. By using the status information,
it is also a simple but effective way of checking their status and condition. Access takes
place via the HART® protocol or CDI (= Endress+Hauser Common Data Interface).

Operability iTHERM TrustSens TM371, TM372
18 Endress+Hauser
Typical functions:
• Configuring parameters of the device
• Loading and saving device data (upload/download)
• Documentation of the measuring point
For iTHERM TrustSens thermometers, FieldCare provides convenient access to
automatically created self-calibration reports.
For details, see Operating Instructions BA00027S/04 and BA00065S/04 in the
download area on www.endress.com.
Source for device description files
See data →  21
Establishing a connection
As example: via HART® modem Commubox FXA191 (RS232) or FXA195 (USB)
1. Make sure to update the DTM library for all connected devices (e.g. FXA19x, iTHERM
TrustSens TM371).
2. Start FieldCare and create a project.
3. Go to View --> Network: Right-click on Host PC Add Device...
 The Add New Device window opens.
4. Select the HART Communication option from the list and press OK to confirm.
5. Double-click on HART Communication DTM instance.
 Check the Serial Interface port for the correct modem and press OK to confirm.
6. Right-click on HART Communication and select the Add Device... option in the
context menu that opens.
7. Select the desired device from the list and press OK to confirm.
 The device appears in the network list.
8. Right-click on this device and select the Connect option in the context menu that
opens.
 The CommDTM appears in green color.
9. Double-click on the device in the network list to establish the online connection to
the device.
 The online parameterization is available.

iTHERM TrustSens TM371, TM372 Operability
Endress+Hauser 19
User interface
1345
6
2
7
A0032334-EN
 8 User interface with device information via HART®-communication
1 Network view
2 Header
3 Device tag and device name
4 Status area for the status signal
5 Measured values with general device information: PV, output current, percent of range, device temperature
6 Navigation area with operating menu structure
7 Display and input area
6.3.2 DeviceCare
Function scope
DeviceCare is a free configuration tool for Endress+Hauser devices. It supports devices with
the following protocols, provided a suitable device driver (DTM) is installed: HART,
PROFIBUS, FOUNDATION Fieldbus, Ethernet/IP, Modbus, CDI, ISS, IPC and PCP. The tool is
aimed at customers without a digital network in plants and workshops as well as Endress
+Hauser service technicians. The devices can be connected directly via a modem (point-to-
point) or a bus system. DeviceCare is fast, easy and intuitive to use. It can run on a PC,
laptop or tablet with a Windows operating system.
Source for device description files
See data →  21
6.3.3 Field Xpert
Function scope
Field Xpert is an industrial PDA (personal digital assistant) with integrated touchscreen for
commissioning and maintaining field devices in explosion hazardous and non-hazardous
areas. It allows efficient configuration of FOUNDATION fieldbus, HART and WirelessHART
devices.
Source for device description files
See data →  21

Operability iTHERM TrustSens TM371, TM372
20 Endress+Hauser
6.3.4 AMS Device Manager
Function scope
Program from Emerson Process Management for operating and configuring measuring
devices via the HART® protocol.
Source for device description files
See data →  21
6.3.5 SIMATIC PDM
Function scope
SIMATIC PDM is a standardized, manufacturer-independent program from Siemens for
the operation, configuration, maintenance and diagnosis of intelligent field devices via the
HART ® protocol.
Source for device description files
See data →  21
6.3.6 Field Communicator 375/475
Function scope
Industrial handheld terminal from Emerson Process Management for remote
configuration and measured value display via the HART ® protocol.
Source for device description files
See data →  21