Siemens SITRANS L Administrator guide

SITRANS LT500 with ultrasonic transducer inputs
SITRANS L
Controllers
SITRANS LT500 with ultrasonic
transducer inputs
Compact Operating Instructions
7ML60.. (SITRANS LT500 with ultrasonic transducer
inputs)
02/2024
A5E52021877
-AA
Getting started
1
Introduction
2
Safety notes
3
Installing/mounting
4
Connecting
5
Commissioning
6
Service and maintenance
7
Technical specifications
8
Product documentation and
support
A

Siemens Aktiengesellschaft
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E52021877
Ⓟ
01/2024 Subject to change
Copyright © Siemens 2024.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens Aktiengesellschaft. The remaining trademarks in
this publication may be trademarks whose use by third parties for their own purposes could violate the rights of
the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 3
Table of contents
1 Getting started ...................................................................................................................................... 6
2 Introduction ........................................................................................................................................... 7
2.1 Purpose of this documentation ............................................................................................ 7
2.2 Designated use.................................................................................................................... 7
2.3 Industrial use note............................................................................................................... 7
2.4 Product compatibility........................................................................................................... 7
2.5 Checking the consignment................................................................................................... 8
2.6 Security information ............................................................................................................ 9
2.7 Transportation and storage................................................................................................ 10
2.8 Notes on warranty ............................................................................................................. 10
3 Safety notes......................................................................................................................................... 11
3.1 Preconditions for use ......................................................................................................... 11
3.1.1 Warning symbols on the device.......................................................................................... 11
3.1.2 Laws and directives............................................................................................................ 11
3.1.3 FCC conformity.................................................................................................................. 12
3.1.3.1 CE and UKCA Electromagnetic Compatibility (EMC) Conformity .......................................... 13
3.1.4 Improper device modifications ........................................................................................... 13
3.2 Requirements for special applications................................................................................. 14
3.3 Use in hazardous areas ...................................................................................................... 14
4 Installing/mounting ............................................................................................................................. 15
4.1 Basic safety notes .............................................................................................................. 15
4.1.1 Installation location requirements...................................................................................... 15
4.1.2 Proper mounting ............................................................................................................... 16
4.2 Installing/mounting the device........................................................................................... 16
4.2.1 General installation notes .................................................................................................. 16
4.2.2 Drilling cable entry holes.................................................................................................... 17
4.2.3 Wall mounting................................................................................................................... 18
4.2.4 Panel mounting ................................................................................................................. 20
4.2.5 Remote panel mounting .................................................................................................... 22
4.2.6 Mounting the remote lid.................................................................................................... 22
4.2.7 Remote panel mount cutout .............................................................................................. 23
4.2.8 Remote mounted lid with extension cable .......................................................................... 24
4.2.9 Extension cable.................................................................................................................. 25
4.3 Installing the communication card ..................................................................................... 26
4.4 Installing the memory card ................................................................................................ 27
4.5 Disassembly....................................................................................................................... 27

Table of contents
SITRANS LT500 with ultrasonic transducer inputs
4Compact Operating Instructions, 02/2024, A5E52021877-AA
5 Connecting .......................................................................................................................................... 28
5.1 Basic safety notes .............................................................................................................. 28
5.2 Connecting SITRANS LT500................................................................................................ 31
5.2.1 Sensor connections............................................................................................................ 32
5.2.2 Wiring compartment.......................................................................................................... 33
5.2.3 Accessing wiring compartment .......................................................................................... 34
5.2.4 Terminal board .................................................................................................................. 36
5.2.5 Cables ............................................................................................................................... 37
5.2.6 Supported sensors ............................................................................................................. 37
5.2.7 Relays................................................................................................................................ 38
5.2.8 Synchronization................................................................................................................. 38
5.2.9 TS-3 temperature sensor.................................................................................................... 39
5.2.10 mA input ........................................................................................................................... 39
5.2.11 mA output......................................................................................................................... 40
5.2.12 Digital inputs ..................................................................................................................... 41
5.2.13 Power................................................................................................................................ 42
5.2.14 Communication................................................................................................................. 43
5.2.14.1 Communication fieldbus.................................................................................................... 43
5.2.14.2 HART ................................................................................................................................. 43
5.2.14.3 Modbus RTU ...................................................................................................................... 45
5.2.14.4 PROFIBUS PA/DP................................................................................................................. 46
5.2.14.5 PROFINET .......................................................................................................................... 46
5.3 Hazardous area installations............................................................................................... 47
5.3.1 Improper power supply...................................................................................................... 47
6 Commissioning .................................................................................................................................... 48
6.1 Basic safety notes .............................................................................................................. 48
6.2 General requirements ........................................................................................................ 49
6.3 Local operation.................................................................................................................. 49
6.4 Device startup ................................................................................................................... 50
6.5 Local commissioning ......................................................................................................... 51
6.5.1 Wizard order...................................................................................................................... 51
6.5.2 Wizards ............................................................................................................................. 52
6.5.2.1 Wizard overview ................................................................................................................ 52
6.5.2.2 Quick commissioning......................................................................................................... 55
6.5.2.3 Pump control..................................................................................................................... 82
6.5.2.4 Basic control ...................................................................................................................... 88
6.5.2.5 Alarms............................................................................................................................... 91
7 Service and maintenance .................................................................................................................... 99
7.1 Basic safety notes .............................................................................................................. 99
7.1.1 Maintenance ..................................................................................................................... 99
7.2 Cleaning............................................................................................................................ 99
7.3 Maintenance and repair work........................................................................................... 100
7.3.1 Replacing memory card ................................................................................................... 100
7.4 Return procedure............................................................................................................. 101
7.5 Disposal........................................................................................................................... 101

Table of contents
SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 5
8 Technical specifications..................................................................................................................... 102
8.1 Power.............................................................................................................................. 102
8.2 Performance.................................................................................................................... 103
8.3 User Interfaces................................................................................................................. 104
8.4 Outputs ........................................................................................................................... 104
8.5 Inputs.............................................................................................................................. 105
8.6 Construction.................................................................................................................... 106
8.7 Operating conditions ....................................................................................................... 107
8.8 Communication............................................................................................................... 107
8.9 Certificates and approvals ................................................................................................ 110
A Product documentation and support................................................................................................. 111
A.1 Product documentation ................................................................................................... 111
A.2 Technical support ............................................................................................................ 112
Index .................................................................................................................................................. 113

SITRANS LT500 with ultrasonic transducer inputs
6Compact Operating Instructions, 02/2024, A5E52021877-AA
Getting started
1
Use this chapter as a quick reference. It provides links to the steps required for startup.
Before you begin, read the following safety information:
•General safety information (Page 11)
•Basic safety information: Installing/mounting (Page 15)
•Basic safety information: Connecting (Page 28)
•Basic safety information: Commissioning (Page 48)
Procedure
1. Install/mount the device.
Installing/mounting (Page 15)
2. Connect the device.
Connecting (Page 28)
3. Power up the device.
Device startup (Page 50)
4. Commission the device via quick commissioning wizard:
Quick commissioning: Level/Space/Distance (Page 57)
Quick commissioning: Volume (Page 63)
Quick commissioning: Volume flow (Page 71)
5. Setup pumps (if applicable).
Pump control (Page 82)
6. Configure basic control relays (if applicable).
Basic control (Page 88)
7. Configure alarms (if applicable).
Alarms (Page 91)
8. Configure totalizers and samplers (if applicable) referencing the respective parameters.
Startup is complete.

SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 7
Introduction
2
2.1 Purpose of this documentation
These instructions are a brief summary of important features, functions and safety
information, and contain all information required for safe use of the device. Read the
instructions carefully prior to installation and commissioning. In order to use the device
correctly, first review its principle of operation.
The instructions are aimed at persons who install and commission the device.
To realize optimum performance from the device, read the complete operating instructions.
2.2 Designated use
Use the device in accordance with the information on the nameplate and in the Technical
specifications (Page 102).
2.3 Industrial use note
NOTICE
Use in a domestic environment
This Class A Group 1 equipment is intended for use in industrial areas.
In a domestic environment this device may cause radio interference.
2.4 Product compatibility
The following table describes compatibility between document edition, device revision,
engineering system and associated Electronic Device Description (EDD).
Service channel
Manual
edition
Remarks Device revision Compatible version of device integration package
02/2024
First edition
Service channel
FW: 1.00.00
HW: 1.00.00
Device revision 0
SIMATIC PDM V9.2
EDD: 1.00.04 or later
SITRANS DTM V4.3 EDD: 1.00.04 or later

Introduction
2.5 Checking the consignment
SITRANS LT500 with ultrasonic transducer inputs
8Compact Operating Instructions, 02/2024, A5E52021877-AA
Modbus RTU
Manual
edition
Remarks Device revision Compatible version of device integration package
02/2024
First edition
Modbus RTU
Not applicable
Not applicable
HART
Manual
edition
Remarks Device revision Compatible version of device integration package
02/2024
First edition
HART
Not applicable
Not applicable
PROFIBUS PA
Manual
edition
Remarks Device revision Compatible version of device integration package
02/2024
First edition
PROFIBUS PA
GSD: si0281de.gse
Not applicable
Not applicable
PROFIBUS DP
Manual
edition
Remarks Device revision Compatible version of device integration package
02/2024
First edition
PROFIBUS DP
GSD: si0281df.gse
Not applicable
Not applicable
PROFINET
Manual
edition
Remarks Device revision Compatible version of device integration package
02/2024
First edition
PROFINET
GSDML: gsdml-v2.35-
sitrans_lt500-0b10-
20230501.xml
Not applicable
Not applicable
2.5 Checking the consignment
Check the device packaging for damage. Inform your supplier of any damage. Retain the
damaged parts for clarification.
Check the scope of delivery by comparing the shipping documents with your order for
correctness and completeness.
Do not take damaged or incomplete devices into operation under any circumstances.
Special conditions for storage and transportation of device listed in Section "Technical
specifications (Page 102)".

Introduction
2.6 Security information
SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 9
2.6 Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be connected
to an enterprise network or the internet if and to the extent such a connection is necessary
and only when appropriate security measures (e.g. firewalls and/or network segmentation)
are in place.
For additional information on industrial security measures that may be implemented, please
visit
https://www.siemens.com/industrialsecurity.
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customer’s exposure to
cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under
https://www.siemens.com/cert.
NOTICE
Unauthorized product information or software
Use only authorized Siemens websites when accessing any product information or software,
including firmware updates, device integration files (EDD, for example), as well as other
product documentation. Using unauthorized product information or software could result in
a security incident, such as breach of confidentiality, or loss of integrity and availability of
the system.
For more information, see Product documentation and support (Page 111).

Introduction
2.7 Transportation and storage
SITRANS LT500 with ultrasonic transducer inputs
10 Compact Operating Instructions, 02/2024, A5E52021877-AA
2.7 Transportation and storage
To guarantee sufficient protection during transport and storage, observe the following:
•Keep the original packaging for subsequent transportation.
•Devices/replacement parts should be returned in their original packaging.
•If the original packaging is no longer available, ensure that all shipments are properly
packaged to provide sufficient protection during transport. Siemens cannot assume
liability for any costs associated with transportation damages.
NOTICE
Insufficient protection during storage
The packaging only provides limited protection against moisture and infiltration.
•Provide additional packaging as necessary.
Special conditions for storage and transportation of the device are listed in Technical
specifications (Page 102).
2.8 Notes on warranty
The contents of this manual shall not become part of or modify any prior or existing
agreement, commitment or legal relationship. The sales contract contains all obligations on
the part of Siemens as well as the complete and solely applicable warranty conditions. Any
statements regarding device versions described in the manual do not create new warranties
or modify the existing warranty.
The content reflects the technical status at the time of publishing. Siemens reserves the right
to make technical changes in the course of further development.

SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 11
Safety notes
3
3.1 Preconditions for use
This device left the factory in good working condition. In order to maintain this status and to
ensure safe operation of the device, observe these instructions and all the specifications
relevant to safety.
Observe the information and symbols on the device. Do not remove any information or
symbols from the device. Always keep the information and symbols in a completely legible
state.
3.1.1 Warning symbols on the device
Symbol
Explanation
Consult operating instructions
Electrostatic sensitive device
Dispose of in an environmentally safe manner, and according to local regulations.
3.1.2 Laws and directives
Observe the safety rules, provisions and laws applicable in your country during connection,
assembly and operation. These include, for example:
•National Electrical Code (NEC - NFPA 70) (USA)
•Canadian Electrical Code (CEC Part I) (Canada)

Safety notes
3.1 Preconditions for use
SITRANS LT500 with ultrasonic transducer inputs
12 Compact Operating Instructions, 02/2024, A5E52021877-AA
The product described in this document is in conformity with the relevant harmonization
legislation, and its amendments, of the European Union.
Electromagnetic compatibil-
ity directive EMC
2014/30/EU
Directive of the European Parliament and of the Council on the
harmonisation of the laws of the Member States relating to
electromagnetic compatibility
Low voltage directive LVD
2014/35/EU
Directive of the European Parliament and of the Council on the
harmonisation of the laws of the Member States relating to the
making available on the market of electrical equipment de-
signed for use within certain voltage limits
Radio equipment directive
RED
2014/53/EU
Directive of the European Parliament and of the Council on the
harmonisation of the laws of the Member States relating to the
making available on the market of radio equipment and repeal-
ing Directive 1999/5/EC
Restriction of hazardous
substances directive RoHS
2011/65/EU
Directive of the European Parliament and the Council on the
restriction of the use of certain hazardous substances in electri-
cal and electronic equipment
The applicable directives can be found in the EU declaration of conformity of the specific
device.
See also Certificates (http://www.siemens.com/processinstrumentation/certificates).
The product described in this document is in conformity with the relevant harmonization
legislation, and its amendments, of the United Kingdom. The applicable regulations can be
found in the UKCA declaration of conformity of the specific device.
See also Certificates (http://www.siemens.com/processinstrumentation/certificates).
3.1.3 FCC conformity
US Installations only: Federal Communications Commission (FCC) rules
Note
Void user authority
Changes or modifications not expressly approved by Siemens could void the user
’s authority
to operate the equipment.

Safety notes
3.1 Preconditions for use
SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 13
Note
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference to radio communications, in which case the user will be required to correct the
interference at his own expense.
3.1.3.1 CE and UKCA Electromagnetic Compatibility (EMC) Conformity
This equipment has been tested and found to comply with the following EMC Standards:
EMC Standard
FCC, CFR 47, Part 15 Subpart B
Class A, Unintentional radiators
CISPR 11 / KS C 9811
Class A, Group 1, Industrial, scientific and medical equip-
ment
KS C 9811:2019
Class A, Industrial, scientific and medical equipment (ISM) -
Radio-frequency disturbance characteristics - Limits and
methods of measurement
IEC/EN 61326-1
Table 2, Electrical Equipment for Measurement, Control and
Laboratory Use – EMC Requirements, Part 1: General Re-
quirements for equipment intended to be used in an indus-
trial electromagnetic environment.
KS C 9610-6-2
Electromagnetic compatibility (EMC) - Part 6-2: Generic
standards - Immunity standard for industrial environments
3.1.4 Improper device modifications
WARNING
Improper device modifications
Risk to personnel, system, and environment can result from modifications to the device,
particularly in hazardous areas.
•Only carry out modifications that are described in the instructions for the device. Failure
to observe this requirement cancels the manufacturer's warranty and the product
approvals. Do not operate the device after unauthorized modifications.

Safety notes
3.2 Requirements for special applications
SITRANS LT500 with ultrasonic transducer inputs
14 Compact Operating Instructions, 02/2024, A5E52021877-AA
3.2 Requirements for special applications
Due to the large number of possible applications, each detail of the described device versions
for each possible scenario during commissioning, operation, maintenance or operation in
systems cannot be considered in the instructions. If you need additional information not
covered by these instructions, contact your local Siemens office or company representative.
Note
Operation under special ambient conditions
We highly recommend that you contact your Siemens representative or our application
department before you operate the device under special ambient conditions as can be
encountered in nuclear power plants or when the device is used for research and
development purposes.
3.3 Use in hazardous areas
Qualified personnel for hazardous area applications
Persons who install, connect, commission, operate, and service the device in a hazardous
area must have the following specific qualifications:
•They are authorized, trained or instructed in operating and maintaining devices and
systems according to the safety regulations for electrical circuits, high pressures,
aggressive, and hazardous media.
•They are authorized, trained, or instructed in carrying out work on electrical circuits for
hazardous systems.
•They are trained or instructed in maintenance and use of appropriate safety equipment
according to the pertinent safety regulations.
WARNING
Use in hazardous area
Risk of explosion.
•Only use equipment that is approved for use in the intended hazardous area and labeled
accordingly.
•Do not use devices that have been operated outside the conditions specified for
hazardous areas. If you have used the device outside the conditions for hazardous areas,
make all Ex markings unrecognizable on the nameplate.

SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 15
Installing/mounting
4
4.1 Basic safety notes
WARNING
Improper installation
Risk to personnel, system and environment can result from improper installation.
•Installation shall only be performed by qualified personnel and in accordance with local
governing regulations.
CAUTION
Damage from electrostatic discharge (ESD)
Some components in the device (such as communication cards, or memory cards) are
sensitive to electrostatic discharge and could be damaged. Be sure to handle such
components in a manner that avoids any potential damage due to ESD.
4.1.1 Installation location requirements
NOTICE
Direct sunlight
Damage to device.
The device can overheat or materials become brittle due to UV exposure.
•Protect the device from direct sunlight.
•Make sure that the maximum permissible ambient temperature is not exceeded. Refer to
the information in Technical specifications (Page 102).
NOTICE
Strong vibrations
Damage to device.
•In installations with strong vibrations, mount the device in a low vibration environment.

Installing/mounting
4.2 Installing/mounting the device
SITRANS LT500 with ultrasonic transducer inputs
16 Compact Operating Instructions, 02/2024, A5E52021877-AA
4.1.2 Proper mounting
NOTICE
Incorrect mounting
The device can be damaged, destroyed, or its functionality impaired through improper
mounting.
•Before installing ensure there is no visible damage to the device.
•Make sure that process connectors are clean, and suitable gaskets and glands are used.
•Mount the device using suitable tools. Refer to the information in Technical
specifications (Page 102).
4.2 Installing/mounting the device
4.2.1 General installation notes
Requirements of installation
•Install device display window at shoulder level, unless most interaction is through a
SCADA system.
•Provide easy access to local buttons.
•Minimize cable length requirements.
•Ensure mounting surface is free from vibration.
•Provide sufficient room to swing device lid open with clear access.
•Provide a place for a laptop computer for on-site configuration (optional, as laptop not
required for configuration).
Things to avoid
•Exposure to direct sunlight. (Provide a sun shield to avoid direct sunlight.)
•Proximity to high voltage/current runs, contactors, SCR or variable frequency motor speed
controllers.
Note
Improper device support
Regardless of the mounting surface used, it
must be able to support four times the weight of
the device or damage to the device may occur.
•
Mount directly to wall or to electrical cabinet back panel with mounting screws: M4 (#6).

Installing/mounting
4.2 Installing/mounting the device
SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 17
Note
Incorrect torque
Ensure torque is set properly or damage to the device may occur.
•
Tighten lid screws to 0.7 to 0.9 Nm (6 to 8 lb-inch).
•
Tighten remote lid screws to 1.1 Nm (10 lb-inch).
•
Tighten terminal screws in wiring compartment to 0.56 to 0.79 Nm (5 to 7 lb-inch).
4.2.2 Drilling cable entry holes
Cable entry holes can be ordered pre-drilled, or they can be drilled by the customer per the
following procedure.
Condition
•The following have been reviewed: Basic safety notes (Page 15), and General installation
notes (Page 16).
•This procedure (if applicable) must be completed prior to mounting the device.
Procedure
CAUTION
Damage from electrostatic discharge (ESD)
Some components in the device (such as communication cards, or memory cards) are
sensitive to electrostatic discharge and could be damaged. Be sure to handle such
components in a manner that avoids any potential damage due to ESD.
1. Remove the lid from the device by undoing its six lid screws and lifting it off its hinges.
2. Disconnect the display cable by pressing the locking tab and pulling straight out.
3. Remove the four screws holding the plastic cover and motherboard to the enclosure.
4. Remove the plastic cover by pulling it straight out.
5. Remove the motherboard from the enclosure by pulling the board straight out.
6. Drill the required cable entry holes. Ensure conduit holes do not interfere with the lower
areas on the terminal block, circuit board, or communication card. See illustration below.
7. Reinstall the motherboard and plastic cover; secure them with the mounting screws.
8. Reconnect the display cable.
9. Reattach the lid onto the hinges.
10.Follow the applicable procedure to mount the device on wall or panel.

Installing/mounting
4.2 Installing/mounting the device
SITRANS LT500 with ultrasonic transducer inputs
18 Compact Operating Instructions, 02/2024, A5E52021877-AA
Dimensions in mm (inch)
4.2.3 Wall mounting
Condition
•The following have been reviewed: Basic safety notes (Page 15), and General installation
notes (Page 16).
•The correct number of cable entry holes (for this installation) are available; device was
ordered with pre-drilled cable entry holes, or customer has completed procedure Drilling
cable entry holes (Page 17).

Installing/mounting
4.2 Installing/mounting the device
SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA 19
Procedure
1. Unscrew the lid (six screws) and open it to reveal the mounting holes.
2. Mark and drill four holes in the mounting surface for the four screws (customer supplied).
①
Mounting screw holes
3. Fasten with a long screwdriver.
4. Add conduit or cable glands if applicable to application and wire as required:
–Attach the conduit to the gland before connecting the gland to the enclosure.
–Unscrew the glands and attach them loosely to the enclosure. Use only approved
suitable-sized glands for watertight applications.
–Thread the cables through the conduit/glands.
To avoid interference, ensure that the power cable is kept separated from the signal
cables, and then wire the cables to the terminal blocks.
–Tighten the glands to form a good seal.
5. Screw the lid in place noting recommended torque values.

Installing/mounting
4.2 Installing/mounting the device
SITRANS LT500 with ultrasonic transducer inputs
20 Compact Operating Instructions, 02/2024, A5E52021877-AA
4.2.4 Panel mounting
Panel cutout dimensions
Installing the panel mount device requires making a cutout in the panel. The dimensions for
the cutout are provided in the illustration below. A full size cutout template is provided with
the device or may be downloaded from Siemens Industry Online Support (SIOS)
(https://support.industry.siemens.com).
Dimensions in mm (inch)
①
6.3 mm diameter (0.25 inch)
②
Min. rad. (type)
Note
Cutout template (printed to scale) shipped with panel mount option.