Serviceline Industrial Sensors
Serviceline Explosion Protection

Vibration Limit Switch Compact Version LVL-M3-A

  • Vibration limit switch for liquids
  • Compact device
  • Wide variety of electronic modules (e. g., relay, thyristor signal output): the right connection for every process control system
  • No calibration: quick and low-cost start up
  • No mechanically moving parts: maintenance-free, no wear, long operating life
  • Operation via push buttons and DIP switches on the electronic insert

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  LVL-M3-A

General specifications
Function principlepoint level detection, maximum or minimum detection for liquids
Measuring methodThe change in vibration frequency causes the device to switch.
Construction typecompact device
SeriesVibracon LVL-M3
Housingsingle compartment, aluminum, coated
single compartment, plastic
Rated voltageelectronic insert FEL42: 10 V DC ... 55 V DC
electronic insert FEL44: 19 V AC ... 253 V AC/19 V DC ... 55 V DC
electronic insert FEL48: switch amplifier acc. to IEC 60947-5-6 (NAMUR)
Current consumptionelectronic insert FEL42: ≤ 10 mA, without load
Power consumptionelectronic insert FEL42: ≤ 0,5 W
electronic insert FEL44: ≤ 25 VA/< 1.3 W
electronic insert FEL48: acc. to IEC 60947-5-6 (NAMUR)
Switching pointsee section switch point
Measured variablelimit level (limit value)
Measurement rangedepends on installation location and the tube extension
maxmum sensor length : 2 m
Output typeelectronic insert FEL42: 3-wire PNP
electronic insert FEL44: relay DPDT
electronic insert FEL48: 2-wire NAMUR
Switch behaviourswitch-over for minimum/maximum residual current safety on electronic insert
MAX = maximum safety:
The output switches to the power fail response when the fork is covered.
for use with overspill protection for example
MIN = minimum safety:
The output switches to the power fail response when the fork is exposed.
for use with dry running protection for example
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326
Low voltage
Directive 2014/35/EUEN 61010-1
Electromagnetic compatibilityNE 21
Degree of protectionIEC 60529 , NEMA 250
Shock resistanceIEC 60068-2-27
Vibration resistanceEN 60068-2-64
Climate classIEC 60068-2-38 test Z/AD
Corrosion resistanceacc. to ISA-S71.04, severity level G3
Input characteristics
Medium densityadjustment on the electronic insert > 0,5 g/cm3 or > 0,7 g/cm3 (other on request)
Measurement accuracy
Reference operating conditionsambient temperature: 23 °C (73 °F)
process temperature: 23 °C (73 °F)
density: 1 g/cm3 (water)
medium viscosity: 1 mPa·s
process pressure: ambietn pressure/unpressurized
sensor installation: verticaly from above
density selection switch: > 0.7 g/cm3
switch direction of sensor: uncovered to covered
Maximum measured errormax. ± 1 mm
Hysteresistyp. 2.5 mm
Influence of medium densitysee technical information (TI)
Influence of medium temperaturemax. +1.4 ... -2.8 mm (-40 ... 150 °C (-40 ... 302 °F))
Influence of medium pressuremax. 0 ... 2.6 mm (-1 ... 40 bar)
Operating conditions
Installation conditions
Installation positionany position
Process conditions
Medium temperature-40 ... 150 °C (-40 ... 302 °F)
Medium pressurepe = -1 ... 40 bar (-14.5 ... 580.2 psi) over the entire temperature range , exceptions see process connections
Test pressurePN = 40 bar (580 psi): test pressure = 1.5 x PN max. 60 bar (870 psi) dependent on the process connection selected
Thermal shock resistance≤ 120 K/s
State of aggregationliquid
Densitymin. 0.5 g/cm3 , optional 0.4 g/cm3
Viscositymax. 10000 mm2/s (max. 10000 cSt)
Ambient conditions
Ambient temperature-40 ... 70 °C (-40 ... 158 °F)
For further information see technical information (TI).
Storage temperature-40 ... 80 °C (-40 ... 176 °F)
Altitude≤ 2000 m above MSL
Mechanical specifications
Degree of protectionplug M12 : IP66/67, NEMA type 4X
Others : IP66/68, NEMA type 4X/6P
Connectiongland M20
thread M20 , G1/2 , NPT1/2 , NPT3/4
plug M12
Materialsee technical information (TI)
Surface qualityRa < 3.2 µm/126 µinch
Massbasic weight: 0.65 kg
the basic weight comprises:
- sensor (compact)
- electronic insert
- housing: single compartment, plastic with cover
- process connection: thread, G3/4
in addition to the basic weight:
- housing: single compartment, aluminum, coated: 0.8 kg
- pipe extension: 1000 mm: 0.9 kg, 100 inch: 2.3 kg
- plastic protective cover: 0.2 kg
For further information see technical information (TI).
Dimensionshousing: diameter max. 101 mm, heigth max. 118 mm
compact version: length depends on process connection
short tube version: length 99 ... 118 mm, depends on process connection
tube extension: length 117 ... 2000 mm
tuning fork: width 17.2 mm, fork width 10 mm, length 40 mm
For further information see technical information (TI).
Process connectioncylindrical threads G3/4, G1 acc. to DIN ISO 228 G for installing in weld-in adapter
cylindrical threads G3/4, G1 acc. to DIN ISO 228 G with flat seal
conical threads NPT3/4, NPT1 acc. to ANSI B 1.20.3
conical threads R3/4, R1 acc. to EN 10226
flanges RF, RJF, FF from 1 inch acc. to ASME B16.5
flanges form A, B1, C, D, E from DN25 acc. to EN 1092-1
flanges RF from 10K 25A acc. to JIS B2220
Tri-Clamp from DN25 acc. to ISO 2852
For further information see technical information (TI).
Data for application in connection with hazardous areas
EU-type examination certificatesee instruction manuals (SI)
International approvals
CSA approvalsee instruction manuals (SI)
IECEx approvalsee instruction manuals (SI)
Indication and operation
Display elementswithout display
Control elementsswitches on the electronic insert
Function testvia switches on the electronic insert
Certificates and approvals
Overspill protectionsee approval (ZE)
General information
Supplementary documentationtechnical information (TI)
manuals, brief instructions (BA, KA)
instruction manuals (SI)
Special documentation (SD)
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see
Designationsee technical information (TI)


ECLASS 13.027200518
ECLASS 12.027200518
ECLASS 11.027200518
ECLASS 10.0.127200518
ECLASS 9.027200589
ECLASS 8.027200589
ECLASS 5.127200589
ETIM 9.0EC001447
ETIM 8.0EC001447
ETIM 7.0EC001447
ETIM 6.0EC001447
ETIM 5.0EC001447
UNSPSC 12.141111950

Details: LVL-M3-A


The device is a vibration limit switch for use in all liquids.

  • for temperatures from -40 °C to +150 °C

  • for pressures up to 40 bar

  • for viscosities up to 10000 mm 2/s

  • for densities up to 0.5 g/cm 3 or 0.4 g/cm 3 (other settings available on request)

The function is not affected by flow, turbulence, bubbles, foam, vibration, bulk solids content or build-up, the device is thus the ideal substitute for float switches.

The device is available with extension tube up to 2 m.

Specific versions are suitable for use in explosion-hazardous areas.

The device is operated via push buttons and DIP switches on the electronic insert.

Product Documentation: LVL-M3-A

Language Selection:
Product informationLanguageFile TypeFile Size
Technical informationENGPDF2749 KB
Brief Instructions
Brief InstructionsENGPDF2483 KB
Safety and Security Documentation
Instruction manual for CC approvalENGPDF171 KB
Instruction manual for CH approvalENGPDF172 KB
Instruction manual for CX approvalENGPDF171 KB
Instruction manual for E2 approvalENGPDF174 KB
Instruction manual for E3 approvalENGPDF173 KB
Temperature tables for CC approvalENGPDF2001 KB
Temperature tables for CH approvalENGPDF1984 KB
Temperature tables for CX approvalENGPDF2006 KB
Temperature tables for E2 approvalENGPDF1986 KB
Temperature tables for E3 approvalENGPDF2007 KB
ManualENGPDF2713 KB

Design / Simulation: LVL-M3-A

Language Selection:
CADLanguageFile TypeFile Size
3-D model / 3-D-ModellALLSTP560 KB

Approvals: LVL-M3-A

Language Selection:
Contamination DeclarationCertificate No.LanguageFile TypeFile Size
Declaration of Contamination / Erklärung zur Kontamination   ALLPDF137 KB

Associated Products: LVL-M3-A


Female cordset, M12, 4-pin, PVC cablefa
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