Siemens SITRANS LU150 User manual

Operating Instructions
SITRANS LU150
03/2016Edition
Ultrasonic Transmitters

SITRANS LU150
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Ultrasonic transmitters
SITRANS LU150
Operating Instructions
03/2016
A5E34590123
-AB
Introduction
1
Description
2
Installing and mounting
3
Connecting
4
Commissioning
5
Operating
6
Troubleshooting
7
Technical data
8
Appendix
A

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E34590123
Ⓟ
03/2016 Subject to change
Copyright © Siemens AG 2015.
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.

SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 3
Table of contents
1 Introduction................................................................................................................................................ 5
2 Description................................................................................................................................................. 7
3 Installing and mounting.............................................................................................................................. 9
3.1 Environmental...........................................................................................................................9
3.2 Location ....................................................................................................................................9
3.3 Threaded.................................................................................................................................10
3.4 Flange adapter (optional)........................................................................................................12
3.5 4" Sanitary...............................................................................................................................13
3.6 LU150 with FMS200 mounting bracket...................................................................................16
4 Connecting .............................................................................................................................................. 17
4.1 Cable entry..............................................................................................................................17
4.2 System diagram......................................................................................................................18
4.3 Wiring connection ...................................................................................................................19
5 Commissioning........................................................................................................................................ 21
5.1 Start up ...................................................................................................................................21
5.2 Calibration...............................................................................................................................22
5.3 Calibration: reference method ................................................................................................22
5.4 4 mA calibration......................................................................................................................23
5.5 20 mA calibration....................................................................................................................23
5.6 Operation status......................................................................................................................24
6 Operating................................................................................................................................................. 25
6.1 Adjustments............................................................................................................................25
6.2 Calibration, scrolling method ..................................................................................................26
6.3 4 mA calibration......................................................................................................................26
6.4 20 mA calibration....................................................................................................................27
6.5 Blanking..................................................................................................................................27
6.6 Adjusting the blanking value...................................................................................................28
6.7 Speed of response..................................................................................................................29
6.8 Adjusting the speed of response ............................................................................................30
6.9 Fail-safe..................................................................................................................................30
6.10 Adjusting the fail-safe setting..................................................................................................31

Table of contents
SITRANS LU150
4Operating Instructions, 03/2016, A5E34590123-AB
6.11 Fail-safe timer ........................................................................................................................ 31
6.12 Adjusting the fail-safe timer.................................................................................................... 31
6.13 Units....................................................................................................................................... 32
6.14 Adjusting the units.................................................................................................................. 32
7 Troubleshooting....................................................................................................................................... 33
7.1 Troubleshooting ..................................................................................................................... 33
8 Technical data ......................................................................................................................................... 35
8.1 Power..................................................................................................................................... 35
8.2 Performance........................................................................................................................... 35
8.3 Interface................................................................................................................................. 35
8.4 Outputs................................................................................................................................... 36
8.5 Construction........................................................................................................................... 36
8.6 Operating conditions.............................................................................................................. 36
8.7 Approvals............................................................................................................................... 37
A Appendix.................................................................................................................................................. 39
A.1 Measurement interval ............................................................................................................ 39

SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 5
Introduction
1
Note
For industrial use only
This product is intended for use in industrial areas. Operation of this equipment in a
residential area may cause interference to several frequency base
d communications.
Note
Unit repair
All changes and repairs must be done by qualified personnel, and applicable safety
regulations must be followed. Please note the following:
•
The user is responsible for all changes and repairs made to the device.
•
All new components must be provided by Siemens.
•
Restrict repair to faulty components only.
•
Do not re-use faulty components.

Introduction
SITRANS LU150
6Operating Instructions, 03/2016, A5E34590123-AB

SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 7
Description
2
The SITRANS LU150 is an ultrasonic level monitor combining sensor and electronics in a single
package. It is designed to measure liquid levels in open or closed vessels. The process part
(sensor) is PVDF, allowing the SITRANS LU150 to be used in a wide variety of industries,
especially food and chemical.
The sensor houses the ultrasonic transducer and temperature sensing element. The SITRANS
LU150 emits a series of ultrasonic pulses from the transducer. Each pulse is reflected as an
echo from the material and sensed by the transducer. The echo is processed by the SITRANS
LU150 using Siemens' proven ‘Sonic Intelligence’ techniques. Filtering is applied to help
discriminate between the true echo from the material, and false echoes from acoustical and
electrical noises and agitator blades in motion. The time for the pulse to travel to the material
and back is temperature compensated and then converted into distance for the mA output.

Description
SITRANS LU150
8Operating Instructions, 03/2016, A5E34590123-AB

SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 9
Installing and mounting
3
3.1
Environmental
The SITRANS LU150 should be mounted in an area that is within the temperature range
specified, and that is suitable to the housing rating and materials of construction.
It is advisable to keep the device away from high voltage or current runs, contactors and SCR
control drives.
3.2
Location
Locate the SITR
ANS LU150 so that it
will have a clear sound path that is
perpendicular to the liquid surface.
The SITRANS LU150 sound path should
not intersect the fill path, rough walls,
seams, rungs, etc.
①
Sanitary ferrule
④
Seams
②
Pipe
⑤
Fill
③
Rungs
Note
Mount the SITRANS LU150 so that the face of the sensor is at least 25 cm above the
highest anticipated level.

Installing and mounting
3.3 Threaded
SITRANS LU150
10 Operating Instructions, 03/2016, A5E34590123-AB
3.3
Threaded
①
Electronics
②
Mounting thread
③
Sensor
The SITRANS LU150 is available in three thread types:
1. 2" NPT ((Taper), ANSI/ASME B1.20.1)
2. R 2" ((BSPT), EN 10226)
3. G 2" ((BSPP), EN ISO 228-1)

Installing and mounting
3.3 Threaded
SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 11
Note
Before inserting the SITRANS LU150 into its mounting hole, ensure that the threads are of
the same type to avoid damaging the device.

Installing and mounting
3.4 Flange adapter (optional)
SITRANS LU150
12 Operating Instructions, 03/2016, A5E34590123-AB
3.4
Flange adapter (optional)
The SITRANS LU150 can be fitted with the optional 75 mm (3") flange adapter for mating to 3"
ANSI, DIN 65PN10 and JIS 10K3B flanges.
①
SITRANS LU150
②
Optional flange adapter (2" NPT - 7ML1830-1BT, 2" BSPT - 7ML1830-1BU)

Installing and mounting
3.5 4" Sanitary
SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 13
3.5
4" Sanitary
Note
•
The sanitary version is suitable for chemical clean-in-place applications to 60 °C (140 °F)
only. Ensure your cleaning chemicals are compatible with PVDF.
①
Electronics
②
Mounting flange
③
Sensor
Mounting the sanitary version
1. Mount the SITRANS LU150 onto the top of the tank’s sanitary ferrule.
2. Secure mating by surrounding the joint with the clamp.
3. Tighten adjusting wing nut.

Installing and mounting
3.5 4" Sanitary
SITRANS LU150
14 Operating Instructions, 03/2016, A5E34590123-AB
①
SITRANS LU150
④
Ferrule
②
Clamp
⑤
Tank
③
Adjusting wing nut

Installing and mounting
3.5 4" Sanitary
SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 15
4" Sanitary ferrule
Note
The inside of sanitary ferrule must be smooth, and free of burrs, seams or ridges.

Installing and mounting
3.6 LU150 with FMS200 mounting bracket
SITRANS LU150
16 Operating Instructions, 03/2016, A5E34590123-AB
3.6
LU150 with FMS200 mounting bracket
①
LU150
②
FMS200 mounting bracket (7ML1830-1BK) with 7ML1830-1DT (Locknut, 2" NPT) or
7ML1830-1DQ (Locknut, 2" BSPT).

SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 17
Connecting
4
4.1
Cable entry
1. Loosen lid and remove it.
2. Install cable gland or conduit.
3. Insert wires through gland or conduit and up through cable guide.
4. Connect wiring.
5. Replace lid and tighten it.
* Lid removed for clarity

Connecting
4.2 System diagram
SITRANS LU150
18 Operating Instructions, 03/2016, A5E34590123-AB
Note
•
To maintain IP and NEMA ratings, tighten the lid between 4 to 4.5 Nm.
•
Ensure the cable gland is screwed in to the enclosure tightly and the cable is within the
specified clamping range (6.5 to 12 mm).
•
User supplied cable glands must meet IP68/NEMA 6 ratings and be installed according to
the manufacturer's instructions.
4.2
System diagram
①
SITRANS LU150
②
Loop instrumentation

Connecting
4.3 Wiring connection
SITRANS LU150
Operating Instructions, 03/2016, A5E34590123-AB 19
4.3
Wiring connection
①
SITRANS LU150
④
V supply
②
Loop instrumentation
③
R max
Note
Power supply is reverse polarity protected.