Siemens SITRANS L 7ML1100 User manual

Transducers
SITRANS L
Ultrasonic level transducers
Transducers
Compact Operating Instructions
7ML1100 (ST-H Transducer)
7ML1105 (Echomax XRS
-5C Transducer)
7ML1106 (Echomax XRS
-5 Transducer)
7ML1115 (Echomax XPS
-10 Transducer)
7ML1118 (Echomax XPS
-15 Transducer)
7ML1123 (Echomax XPS-30 Transducer)
09/2021
A5E43390688
-AC
Introduction
1
Safety notes
2
Installing/mounting
3
Connecting
4
Technical specifications
5
Applications
A
Certificates
B
Product documentation and
support
C

Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E43390688
Ⓟ
02/2022 Subject to change
Copyright © Siemens AG 2021.
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 AG. 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.

Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 3
Table of contents
1 Introduction ........................................................................................................................................... 5
1.1 Purpose of this documentation ............................................................................................ 5
1.2 Checking the consignment................................................................................................... 5
1.3 Security information ............................................................................................................ 6
1.4 Transportation and storage.................................................................................................. 6
1.5 Notes on warranty ............................................................................................................... 7
1.6 About Siemens' Transducers................................................................................................. 7
2 Safety notes......................................................................................................................................... 10
2.1 Preconditions for use ......................................................................................................... 10
2.1.1 Warning symbols on device................................................................................................ 10
2.1.2 Laws and directives............................................................................................................ 10
2.1.3 Improper device modifications ........................................................................................... 11
2.1.4 Safety Precautions ............................................................................................................. 11
2.2 Use in hazardous areas ...................................................................................................... 12
2.3 Requirements for special applications................................................................................. 13
3 Installing/mounting ............................................................................................................................. 14
3.1 Basic safety notes .............................................................................................................. 14
3.1.1 Installation location requirements ...................................................................................... 16
3.1.1.1 Insufficient air supply......................................................................................................... 16
3.1.2 Proper mounting ............................................................................................................... 17
3.2 Disassembly....................................................................................................................... 17
3.3 Outline and Dimensions..................................................................................................... 18
3.3.1 XPS Transducers ................................................................................................................ 18
3.3.2 XRS-5 ................................................................................................................................ 19
3.3.3 ST-H .................................................................................................................................. 20
3.4 Mounting .......................................................................................................................... 21
3.4.1 Solids applications ............................................................................................................. 21
3.4.2 Liquids applications ........................................................................................................... 22
3.4.2.1 XPS Transducers ................................................................................................................ 22
3.4.2.2 XRS-5 ................................................................................................................................ 25
3.4.2.3 ST-H .................................................................................................................................. 28

Table of contents
Transducers
4Compact Operating Instructions, 09/2021, A5E43390688-AC
4 Connecting .......................................................................................................................................... 31
4.1 Basic safety notes .............................................................................................................. 31
4.1.1 Connect or disconnect device only in a de-energized state.................................................. 32
4.2 Connecting note................................................................................................................ 33
4.3 Direct connection .............................................................................................................. 34
4.4 Coaxial connection ............................................................................................................ 35
4.5 2 Wire Extension................................................................................................................ 36
4.6 3 Terminal ......................................................................................................................... 37
5 Technical specifications....................................................................................................................... 38
5.1 Specifications .................................................................................................................... 38
A Applications ......................................................................................................................................... 40
A.1 Liquids applications ........................................................................................................... 40
A.1.1 Stilling well with standpipe................................................................................................ 40
A.1.2 Submergence .................................................................................................................... 41
A.1.3 Standpipes ........................................................................................................................ 42
A.1.4 Volume ............................................................................................................................. 44
A.1.5 Water/wastewater.............................................................................................................. 45
A.2 Solids applications ............................................................................................................. 46
A.2.1 Typical............................................................................................................................... 46
A.2.2 Special............................................................................................................................... 49
B Certificates........................................................................................................................................... 51
B.1 Wiring setups for hazardous area installations .................................................................... 51
B.2 Instructions specific to hazardous area installations............................................................ 53
C Product documentation and support .................................................................................................. 56
C.1 Product documentation ..................................................................................................... 56
C.2 Technical support .............................................................................................................. 57
Index.................................................................................................................................................... 58

Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 5
Introduction
1
1.1 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.
1.2 Checking the consignment
1. Check the packaging and the delivered items for visible damages.
2. Report any claims for damages immediately to the shipping company.
3. Retain damaged parts for clarification.
4. Check the scope of delivery by comparing your order to the shipping documents for
correctness and completeness.
WARNING
Using a damaged or incomplete device
Risk of explosion in hazardous areas.
•
Do not use damaged or incomplete devices.

Introduction
1.3 Security information
Transducers
6Compact Operating Instructions, 09/2021, A5E43390688-AC
1.3 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 only form one element of such a concept.
Customer is responsible to prevent unauthorized access to its plants, systems, machines and
networks. Systems, machines and components should only be connected to the enterprise
network or the internet if and to the extent necessary and with appropriate security measures
(e.g. use of firewalls and network segmentation) in place.
Additionally, Siemens’ guidance on appropriate security measures should be taken into
account. For more information about industrial security, please visit:
http://www.siemens.com/industrialsecurity (https://www.siemens.com/industrialsecurity).
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends to apply product updates as soon as available and to
always use the latest product versions. Use of product versions that are no longer supported,
and failure to apply 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
http://www.siemens.com/industrialsecurity (https://www.siemens.com/industrialsecurity).
1.4 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 38).

Introduction
1.5 Notes on warranty
Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 7
1.5 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.
1.6 About Siemens' Transducers
Note
This product is intended for use in industrial areas. Operation of this equipment in a
residential area may cause interference to several frequency based communications.
The transducers operate in association with Siemens' ultrasonic level monitoring products by
converting electrical pulses that are provided by the transceiver into ultrasonic pulses. When
transmitted, these ultrasonic pulses reflect from the material surface and echo back to the
transducer. The echo is converted back to an electrical signal, and is interpreted by the
Siemens transceiver using our proven Sonic Intelligence™ algorithms.
The effective acoustical energy is emitted from the transducer face and radiated outward,
decreasing in amplitude at a rate inversely proportional to the square of the distance.

Introduction
1.6 About Siemens' Transducers
Transducers
8Compact Operating Instructions, 09/2021, A5E43390688-AC
Maximum power is radiated axially (perpendicular) from the transducer face in a line referred
to as the axis of transmission. Where power is reduced by half (– 3 dB), a conical boundary
defining the sound beam, centered about the axis of transmission, is established. The
diametric measurement of the cone in degrees defines the beam angle. Impedance matching
techniques are used to optimize the transfer of power from the transducer into air and vice
versa.
All transducers incorporate an integral temperature sensor that reports the air temperature at
the transducer to the transceiver. The connection is transparent, in that both the ultrasonic
and temperature components of the transducer use the same leads.

Introduction
1.6 About Siemens' Transducers
Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 9
XPS-10, XPS-15/15F,
XPS-30, XRS-5/5C
ST-H Transducer with explosion
proof conduit seal
①
Explosion proof conduit seal1)
②
Transducer
③
Transducer face
④
3 db boundary
⑤
Axis of transmission2)
1) Optional
2) Perpendicular to Transducer face
Note
Use in hazardous areas
The XPS
-15F and XRS-5C already have a built-in explosion proof conduit seal.
All other transducers may need the optional explosion proof conduit seal for use in hazardous
areas according to local codes and guidelines.

Transducers
10 Compact Operating Instructions, 09/2021, A5E43390688-AC
Safety notes
2
2.1 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.
2.1.1 Warning symbols on device
Symbol
Explanation
Consult operating instructions
2.1.2 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)
Further provisions for hazardous area applications are for example:
•IEC 60079-14 (international)
•EN 60079-14 (EU and UK)

Safety notes
2.1 Preconditions for use
Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 11
2.1.3 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.
2.1.4 Safety Precautions
The ST-H transducer body is a two part design molded in PVDF or ETFE with internal parts
potted in epoxy. The joint between the upper and lower sections is not a hermetic seal. The
structural integrity of the transducer will be compromised if the joint is exposed to an
environment that attacks epoxy. As a result, the top section will separate from the main body
of the transducer.
For environments that are compatible with PVDF or ETFE but may degrade epoxy, the
transducer must be mounted through a flange or stub mount using the 2" thread on the
lower section of the transducer. The joint between upper and lower sections of the
transducer must be isolated from the corrosive environment.
①
Suitable for use in a corrosive environment
②
Not suitable for use in a corrosive environment

Safety notes
2.2 Use in hazardous areas
Transducers
12 Compact Operating Instructions, 09/2021, A5E43390688-AC
WARNING
Risk of explosion
If the top section separates from the main body of the transducer, live circuitry will be
exposed to the hazardous environment, increasing the risk of an explosion if volatile or
explosive dusts or gases are in sufficient concentration. A malfunction of the level system
may also occur, which may affect the process using the ultrasonic ranging system.
2.2 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.

Safety notes
2.3 Requirements for special applications
Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 13
2.3 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 con
ditions as can be
encountered in nuclear power plants or when the device is used for research and
development purposes.
Note
Operation under special atmospheric conditions
Ultrasonic measurement requires that the sound wave travel through the atmosphere in a
consistent manner.
Applications with atmospheric conditions different from air (including,
but not limited to, gas layer stratification, very high methane or CO
2concentrations), should
be properly assessed to ensure safe, reliable use in the event of measurement errors due to
sound wave velocity changes.

Transducers
14 Compact Operating Instructions, 09/2021, A5E43390688-AC
Installing/mounting
3
3.1 Basic safety notes
DANGER
Pressure applications
Danger to personnel, system and environment will result from improper disassembly.
•Never attempt to loosen, remove, or disassemble process connection while vessel
contents are under pressure.
WARNING
Wetted parts unsuitable for the process media
Risk of injury or damage to device.
Hot, toxic and corrosive media could be released if the wetted parts are unsuitable for the
process medium.
•
Ensure that the material of the device parts wetted by the process medium is suitable for
the medium. Refer to the information in Technical specifications (Page 38).
Note
Material compatibility
Siemens can provide you with support concerning selection of sensor components wetted by
process media. However, you are responsible for the selection of components. Siemens
accepts no liability for faults or failures resulting from incompatible materials.
WARNING
Unsuitable connecting parts
Risk of injury or poisoning.
In case of improper mounting, hot, toxic, and corrosive process media could be released at
the connections.
•Ensure that connecting parts (such as flange gaskets and bolts) are suitable for
connection and process media.

Installing/mounting
3.1 Basic safety notes
Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 15
WARNING
Exceeded maximum permissible operating pressure
Risk of injury or poisoning.
The maximum permissible operating pressure depends on the device version, pressure limit
and temperature rating. The device can be damaged if the operating pressure is exceeded.
Hot, toxic and corrosive process media could be released.
Ensure that maximum
permissible operating pressure of the device is not exceeded. Refer to
the information on the nameplate and/or in Technical specifications (Page 38).
CAUTION
Hot surfaces resulting from hot process media
Risk of burns resulting from surface temperatures above 65 °C (149 °F).
•Take appropriate protective measures, for example contact protection.
•Make sure that protective measures do not cause the maximum permissible ambient
temperature to be exceeded. Refer to the information in Technical specifications
(Page 38).
CAUTION
External stresses and loads
Damage to device by severe external stresses and loads (e.g. thermal expansion or pipe
tension). Process media can be released.
•
Prevent severe external stresses and loads from acting on the device.

Installing/mounting
3.1 Basic safety notes
Transducers
16 Compact Operating Instructions, 09/2021, A5E43390688-AC
3.1.1 Installation location requirements
3.1.1.1 Insufficient air supply
WARNING
Insufficient air supply
The device may overheat if there is an insufficient supply of air.
•Install the device so that there is sufficient air supply in the room.
•Observe the maximum permissible ambient temperature. Refer to the information in the
section Technical specifications (Page 38).
NOTICE
Aggressive atmospheres
Damage to device through penetration of aggressive vapors.
•
Ensure that the device is suitable for the application.
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 38).
NOTICE
Strong vibrations
Damage to device.
•In installations with strong vibrations, mount the transmitter in a low vibration
environment.

Installing/mounting
3.2 Disassembly
Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 17
3.1.2 Proper mounting
CAUTION
Loss of type of protection
Damage to device if the enclosure is open or not properly closed. The type of protection
specified on the nameplate or in Technical specifications (Page 38) is no longer guaranteed.
•
Make sure that the device is securely closed.
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 38).
3.2 Disassembly
WARNING
Incorrect disassembly
The following risks may result from incorrect disassembly:
- Injury through electric shock
- Risk through emerging media when connected to the process
- Risk of explosion in hazardous area
In order to disassemble correctly, observe the following:
•Before starting work, make sure that you have switched off all physical variables such as
pressure, temperature, electricity etc. or that they have a harmless value.
•If the device contains hazardous media, it must be emptied prior to disassembly. Make
sure that no environmentally hazardous media are released.
•Secure the remaining connections so that no damage can result if the process is started
unintentionally.

Installing/mounting
3.3 Outline and Dimensions
Transducers
18 Compact Operating Instructions, 09/2021, A5E43390688-AC
3.3 Outline and Dimensions
3.3.1 XPS Transducers
①
Radiating face
Dimension
XPS-10
XPS-15
XPS-30
A
88 mm (3.4")
121 mm (4.8")
175 mm (6.9")
B
122 mm (4.8")
132 mm (5.2")
198 mm (7.8")
C
to suit ANSI, DIN and JIS standards
D
1)
128 mm (5.0")
138 mm (5.4")
204 mm (8.0")
E
124 mm (4.9")
158 mm (6.2")
n/a
F
152 mm (6.0")
198 mm (7.8")
n/a
G
28 mm (1.1")
28 mm (1.1")
28 mm (1.1")
1) Nominal
WARNING
Potential hazard
Optional Split Flange, Bonded Flange, and Easy Aimer configurations are not suitable for
pressure applications.

Installing/mounting
3.3 Outline and Dimensions
Transducers
Compact Operating Instructions, 09/2021, A5E43390688-AC 19
3.3.2 XRS-5
①
Standard
②
Flange (Optional)
③
Submergence Shield (Optional)

Installing/mounting
3.3 Outline and Dimensions
Transducers
20 Compact Operating Instructions, 09/2021, A5E43390688-AC
3.3.3 ST-H
①
87 mm Ø (3.4")
②
2" NPT, R 2" (BSPT), or G 2" (BSPP) mounting thread (process connection)
③
1" NPT conduit thread
Flange Adapter
①
Plastic type coupling
②
Siemens flange adapter