Siemens SITRANS L Series User manual

Operating instructions
LVS100/LVS200
Point level switches
01/2019Edition
SITRANS L
www.siemens.com/processautomation

SITRANS L
Point Level Switches
SITRANS LVS100/200
Operating Instructions
7ML5735 (SITRANS LVS100 Standard)
7ML5731 (SITRANS LVS200 Standard)
7ML5732 (SITRANS LVS200 Short fork)
7ML5733 (SITRANS LVS200 Pipe extension)
7ML5734 (SITRANS LVS200 Cable extended)
01/2019
A5E44839609
-AA
Introduction
1
Description
2
Operating
3
Installation
4
Connecting
5
Maintenance
6
Technical data
7
Dimension drawings
8
Certificates and support
A

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E44839609
Ⓟ
01/2019 Subject to change
Copyright © Siemens AG 2012.
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 LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA 3
Table of contents
1 Introduction................................................................................................................................................ 5
1.1 Purpose of this documentation .................................................................................................5
2 Description................................................................................................................................................. 6
2.1 SITRANS LVS100, SITRANS LVS200 - standard version.......................................................6
2.2 SITRANS LVS200 - liquid/solid interface version.....................................................................6
2.3 SITRANS LVS200 - pipe extension version .............................................................................6
2.4 Product features........................................................................................................................7
2.5 Product applications..................................................................................................................7
2.6 Principle of operation ................................................................................................................7
3 Operating................................................................................................................................................... 9
3.1 Signal output delay ...................................................................................................................9
3.2 Test function .............................................................................................................................9
3.3 Vibration amplitude diagnosis.................................................................................................12
3.4 Current output setting .............................................................................................................12
3.5 Buildup detection (8/16 mA or 4 to 20 mA version)................................................................13
4 Installation ............................................................................................................................................... 14
4.1 Mounting .................................................................................................................................14
4.2 Process cautions.....................................................................................................................17
4.3 Temperature isolator option (LVS100/200) ............................................................................18
5 Connecting .............................................................................................................................................. 20
5.1 Connection recommendations................................................................................................21
5.2 Precautions.............................................................................................................................21
5.3 Power supply specifications....................................................................................................26
5.4 Sensitivity................................................................................................................................27
5.5 Switching logic ........................................................................................................................28
5.6 SITRANS LVS200 Pipe extension version .............................................................................30
5.6.1 Extension tube manufacture...................................................................................................30
5.6.2 Extension tube dimensions.....................................................................................................31
5.6.3 Assembly ................................................................................................................................33
5.6.4 Assembly overview drawing ...................................................................................................36
6 Maintenance ............................................................................................................................................ 37
6.1 Unit repair and excluded liability.............................................................................................37

Table of contents
SITRANS LVS100/200
4Operating Instructions, 01/2019, A5E44839609-AA
7 Technical data ......................................................................................................................................... 38
8 Dimension drawings ................................................................................................................................ 42
8.1 SITRANS LVS100.................................................................................................................. 42
8.2 Zone classification ................................................................................................................. 43
8.3 SITRANS LVS200.................................................................................................................. 44
8.4 Zone classification ................................................................................................................. 45
8.5 SITRANS LVS200 Forks........................................................................................................ 46
A Certificates and support........................................................................................................................... 47
A.1 Technical support................................................................................................................... 47
A.2 Certificates ............................................................................................................................. 47
Index........................................................................................................................................................ 48

SITRANS LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA 5
Introduction
1
1.1
Purpose of this documentation
These instructions contain all information required to commission and use 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 mechanically installing the device, connecting it
electronically, configuring the parameters and commissioning it, as well as service and
maintenance engineers.
Note
•
This manual applies to SITRANS LVS100 and SITRANS LVS200 only.
•
Product details and instructions in this manual relate to both SITRANS LVS100 and
SITRANS LVS200 unless otherwise stated.
•
This product is intended for use in industrial areas. Operation of this equipment in a
residential area can cause interference to several frequency based communications.

SITRANS LVS100/200
6Operating Instructions, 01/2019, A5E44839609-AA
Description
2
The SITRANS LVS100 and SITRANS LVS200 are available in a standard version, with the
SITRANS LVS200 offering two additional versions.
2.1
SITRANS LVS100, SITRANS LVS200 - standard version
SITRANS LVS100/200 standard version is a vibrating level switch that detects high or low
levels of dry bulk solids in bins, silos, or hoppers. It has a compact design that allows it to be
top or side mounted and the vibrating fork ensures that the tines are kept clean.
●SITRANS LVS100 is an entry level solids fork with a bulk density limit starting at 30 g/l
(3.8 lb/ft3). The LVS100 is available with rigid extension options to 4 000 mm (157").
●SITRANS LVS200 provides several output options for indication of point level with
products such as lime, styrofoam, flour, and plastic granules, starting at 20 g/l (1.2 lb/ft3).
It handles a broader range of applications and is able to measure bulk densities of less
than 5g/l. In addition, the LVS200 has a wider range of process configurations. SITRANS
LVS200 standard length fork is available with variable cable extension lengths to a
maximum of 20 000 mm (787") (cable extensions for top mount applications only). An
optional longer fork is available for increased sensitivity.
2.2
SITRANS LVS200 - liquid/solid interface version
The SITRANS LVS200, liquid/solid interface version, is a vibrating level switch that can also
detect settled solids within liquids, or solids within confined spaces such as feed pipes. This
version is designed to ignore liquids in order to detect the interface between a solid and a
liquid. The design incorporates a short fork, and is also available with variable cable
extension lengths to a maximum of 7000 mm (275.59"), for top mount applications only.
2.3
SITRANS LVS200 - pipe extension version
The SITRANS LVS200, pipe extension version, is a vibrating level switch that incorporates a
customer supplied pipe extension [maximum length 3800 mm (150")] with the standard or
liquid/solid (short) LVS200 fork and electronics. This allows for separation of the electronics
and tuning fork for applications requiring a rigid extension. See SITRANS LVS200 Pipe
Extended Version (Page 30) for information on assembly.

Description
2.4 Product features
SITRANS LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA 7
2.4
Product features
●High resistance to mechanical forces
●Strong vibration resistance to high bulk material loads
●Rotatable enclosure
●LVS100: R 1½" (BSPT); 1¼" NPT (Taper) threaded connection
●LVS200: Stainless steel 1½” NPT or R 1½” (BSPT) threaded connection, or R 2" (BSPT)
or NPT sliding sleeve. DN 100 and 2, 3, 4" ASME flange and Triclamp 2" options
available.
●Suitable for high or low density material
LVS100 standard version 30 g/l (1.9 lb/ft 3) min.
LVS200 standard version
20 g/l (1.2 lb/ft
3
) min.
LVS200 standard version with low density fork 5 g/l (0.3 lb/ft 3) min.
LVS200 liquid/solid interface version
50 g/l (3.0 lb/ft
3
) min.
2.5
Product applications
●Dry lime, Styrofoam, flour, plastic granules
●High or low density, dry bulk materials
●Interface detection of a solid within a liquid (filter beds)
●Flow or no flow detection in pipe using liquid/solid LVS200 version
2.6
Principle of operation
A signal from the electronic circuit excites a crystal in the probe, causing the fork to vibrate. If
the fork is covered by material, the change in vibration is detected by electronic circuitry
which causes the relay to change state after a one second delay. When the material no
longer reaches the tines, full vibration resumes and the relay reverts to its normal state.
WARNING
Do not use as a safety device
This product is designed as a Pressure Accessory per Directive 2014/68/EU and is not
intended for use as a safety device.

Description
2.6 Principle of operation
SITRANS LVS100/200
8Operating Instructions, 01/2019, A5E44839609-AA
WARNING
Chemical compatibility
Materials of construction are chosen based on their chemical compatibility (or inertness) for
general purposes. For exposure to specific environments, check with chemical compatibility
charts before installing.

SITRANS LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA 9
Operating
3
Note
The signal output and test options listed below apply only to specific power supply options.
3.1
Signal output delay
Universal voltage (DPDT) model
The signal output can be delayed and is adjustable from 0 to 30 seconds. Turn the
potentiometer clockwise to increase the delay time.
Potentiometer T1: Delay when output switches from fork covered to uncovered.
Potentiometer T2: Delay when output switches from fork uncovered to covered.
3.2
Test function
NAMUR model (IEC 60947-5-6) and 8/16 mA or 4 to 20 mA model
If the fork is uncovered, pressing this button will stop the vibration and the signal output will
switch to indicate a covered fork. You can test the vibration and the electronics without
removing the LVS200 from the vessel. If the fork is covered, pressing the button has no
effect.

Operating
3.2 Test function
SITRANS LVS100/200
10 Operating Instructions, 01/2019, A5E44839609-AA
NAMUR model
①
Test button
②
Electronic module
③
Diagnostic LED
④
Sensitivity adjustment:
B = factory setting
A = decreased sensitivity

Operating
3.2 Test function
SITRANS LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA 11
8/16 or 4 to 20 mA model
①
Test button
②
Sensor switches at high level
Fail-safe function will default to full signal
Sensor switches at low level
Fail-safe function will default to empty signal
③
Diagnostic LED
④
Sensitivity adjustment:
B = factory setting
A = decreased sensitivity
⑤
Filling or emptying
⑥
Output setting
⑦
Signal output LED

Operating
3.3 Vibration amplitude diagnosis
SITRANS LVS100/200
12 Operating Instructions, 01/2019, A5E44839609-AA
3.3
Vibration amplitude diagnosis
NAMUR module (IEC 60947-5-6) and 8/16 mA or 4 to 20 mA model
Measurement quality is related to the vibration amplitude of the fork. The diagnostic LED
indicates the quality of the vibration being sent to the LVS200 electronics.
●Diagnostic LED off: measurement quality is good. The vibration amplitude is strong.
●Diagnostic LED blinking: measurement quality is poor and vibration amplitude is
decreasing as fork becomes encrusted. When this happens, set the sensitivity switch to
decreased sensitivity.
●Diagnostic LED on: vibration has stopped and fork is fully encrusted with material.
3.4
Current output setting
8/16 mA
The chart below illustrates the output current when:
●Fork is clean
●Fork is encrusted: weak vibration amplitude is shown
●Fork is fully encrusted and vibration has stopped.
Diagno-
sis Set-
ting
D Off
I = 16 mA I = 8 mA
I = 16 mA
I = 8 mA
I = 8 mA I = 16
mA
D On I = 20 mA I = 6 mA
Signal
output LED
Diagnosis
LED
The output current can indicate weak vibration amplitude with the diagnosis setting
D ON.
If
the diagnosis is set to
D OFF
, the output will be either 8 mA or 16 mA depending on high or
low level settings.
If the diagnosis is set to
D ON
, the output will change from 16 to 20 mA and from 8 to 6 mA if
the vibration is weak. This output can be passed to an external 4 to 20 mA output. There is
an internal delay of 10 seconds before the change happens, so that the external output does
not indicate a weak vibration when the vibration is stopped and started during normal
measurement operation.

Operating
3.5 Buildup detection (8/16 mA or 4 to 20 mA version)
SITRANS LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA 13
3.5
Buildup detection (8/16 mA or 4 to 20 mA version)
With the 4 to 20 mA setting, you can recognize material buildup on the fork using a PLC or
data logger. In this mode, the Diagnostic setting has no influence. The LED showing signal
output is off.
●
20 mA:
The fork is clean.
●
<20 mA and >12/12.5 mA:
The vibration amplitude is decreased by the material buildup.
●
<12/12.5 mA and >7/8 mA:
This range indicates a weak vibration. The internal LED
showing diagnosis begins blinking to indicate a weak signal. If you are using a PLC to
evaluate the echo, delay the response time to this indicator for approximately 10
seconds. A hysteresis of 0.5 mA (between 12 and 12.5 mA) is recommended.
●
7/8 mA:
This point indicates that the fork is mostly encrusted.
●
6 mA:
This point indicates that the fork is fully encrusted.
With setting "high sensitivity"
With setting "low sensitivity"
①
Amplitude is 100%
③
Amplitude is 100%
②
Amplitude is 0%
④
Amplitude is 0%

SITRANS LVS100/200
14 Operating Instructions, 01/2019, A5E44839609-AA
Installation
4
4.1
Mounting
●Installation shall be performed by qualified personnel and in accordance with local
governing regulations.
●Do not bend, shorten or extend the tines.
●Position the tines using a 50 mm open-end wrench when installing the process
connection (do not turn the housing). When side mounting SITRANS LVS100/200,
position the tines vertically, with the tine orientation marking facing up or down.
●In pressure applications, use PTFE tape or other appropriate sealant to seal tapered
threaded connections.
●After mounting, ensure the cable entries point downward to prevent water entering the
housing.
●For the SITRANS LVS100/200 extended model, the torque due to material loading at the
mounting point may not exceed 250 Nm.
●Mounting torque for the 1½" thread connection may not exceed 80 Nm.
WARNING
LVS100 and LVS200
•
This product is designated as a Pressure Accessory per Directive 2014/68/EU and is not
intended for use as a safety device.
•Improper installation may result in loss of process pressure.
•To install devices in hazardous locations, observe all valid installation regulations.
•For Dust Ex installations: Before opening the device lid, ensure there are no deposits
present.
•Do not remove lid while circuits are live.
•Install the SITRANS LVS100/200 so mechanical friction or impact does not cause
sparks between the aluminum enclosure and steel vessel.

Installation
4.1 Mounting
SITRANS LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA 15
WARNING
LVS200
•Installation in Zone 0 (electronics: NAMUR): The intrinsic safe supply circuit must have
galvanic isolation to a non- intrinsically safe area. Otherwise, provide protection for the
device against lightning strikes (see EN 60079-14).
•Power supply (electronics: NAMUR): Intrinsically safe protection is only valid when
connected to a certified intrinsically safe power supply.
•For the LVS Pipe extended and cable extended models with Namur electronics for gas
hazardous approvals: When mounting the units on a vessel lid that separates Zone 0
(Cat. 1G) from Zone 1 (Cat 2G), the units have no safe separation between Zone 0 and
Zone 1. Gas can pass from Zone 0 through the unit to Zone 1.

Installation
4.1 Mounting
SITRANS LVS100/200
16 Operating Instructions, 01/2019, A5E44839609-AA
SITRANS LVS100/200 is normally mounted into the vessel top for full detection, or through
the tank wall at the detection level, for full, demand, or empty detection.
Position tines vertically to avoid product
buildup: use a 50 mm open
-end wrench to
turn the process connection until the tine
orientation marking faces up or down.
Use angle mounting for flowing material
only. If angle mounting is required with high
material loading, customer
-supplied protec-
tion from falling material must be in place.
①
Cable extension version
②Rigid extension with sliding sleeve
③
Protection in case of high material loading.
④
Cable gland faces downward to avoid water penetration.
⑤Tine orientation marking facing sideways.
⑥
Angle mounting
max. deviation from vertical α
max. length L
5°
4 m
45°
1.2 m
>45°
0.6 m

Installation
4.2 Process cautions
SITRANS LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA 17
4.2
Process cautions
CAUTION
Falling material
Locate SITRANS LVS100/200 out of path of falling material
OR
Protect shaft and tines from falling material
OR

Installation
4.3 Temperature isolator option (LVS100/200)
SITRANS LVS100/200
18 Operating Instructions, 01/2019, A5E44839609-AA
4.3
Temperature isolator option (LVS100/200)
When installed with the temperature isolator option, SITRANS LVS100/200 can operate in
higher ambient temperatures.
①
Installed without temperature isolator, process connection at surface
②
Installed without temperature isolator, process connection above surface
③
Installed with temperature isolator option
④
Tamb.
⑤
Tprocess
Installing SITRANS LVS100/200 with the temperature extension allows the device to be
operated at higher ambient temperatures, ③, than would be possible otherwise, ①.
Process temperature (LVS100)
①
Installed without temperature isolator, process connection at surface
②
Installed without temperature isolator, process connection above surface
③
Installed with temperature isolator option