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Vibration Limit Switch LVL-B1

  • Limit switch for bulk solids
  • Compact device
  • No calibration: easy commissioning (plug and play)
  • Insensitive to build-up: maintenance-free operation
  • No mechanically moving parts: no wear, long operating life
  • Sensor material stainless steel: hardly any abrasion even with building materials
  • Insensitive to external vibration and flow noises

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.

Scarica il Datasheet completo in formato PDF:

Estratto del Datasheet: Dati tecnici del  LVL-B1

General specifications
Measuring methodA piezoelectric drive excites the vibrating rod of the device to its resonance frequency. If medium covers the vibrating rod, the rod's vibrating amplitude changes (the vibration is damped). The electronics of the device compare the actual amplitude with a target value and indicates whether the vibrating rod is vibrating freely or whether it is covered by medium.
Equipment architectureThe measuring system consists of:
- the device with electronic insert
- a supply point
- the connected control systems, switching units, signalling systems (e. g. lamps, horns, PCS, PLC, etc.)
Construction typecompact device
Operating modeMAX = maximum safety:
The device switches if the probe is covered or if the supply voltage is disconnected in a safety-oriented manner (signal on alarm).
example application: overspill protection
MIN = minimum safety:
The device switches if the probe is uncovered or if the supply voltage is disconnected in a safetyoriented manner (signal on alarm).
example application: dry-running protection
SeriesVibracon LVL-B1
Rated voltageelectronic insert FEM22 (E5): 10 ... 45 V DC
electronic insert FEM24 (WA): 19 ... 253 V AC, 50/60 Hz or 19 ... 55 V DC
Rippleelectronic insert FEM22 (E5): max. 5 V, 0 ... 400 Hz
Current consumptionelectronic insert FEM22 (E5): max. 18 mA
Power consumptionelectronic insert FEM22 (E5): max. 0.81 W
electronic insert FEM 24 (WA): max. 1.3 W
Reverse polarity protectionseparation voltage 2.2 kV
Electrical specifications
Surge protectionelectronic insert FEM22 (E5) : overvoltage category III
Input signalprobe covered - small amplitude
probe not covered - large amplitude
Measured variablelevel (according to the mounting location and the overall length)
Measurement rangeThe measuring range depends on the mounting location of the device
Loadelectronic insert FEM22 (E5):
- load switched via transistor and separate PNP connection
- load current: max. 45 V (cyclical overload and short-circuit protection), continuous max. 350 mA
- residual current: < 100 µA (for blocked transistor)
- capacitive load: max. 0.5 µF for 45 V, max. 1.0 µF for 24 V
- residual voltage: < 3 V (for transistor switched through)
electronic insert FEM24 (WA):
- loads switched via 2 floating change-over contacts
- version AC: I max. 6 A, U max. 253 V; P max. 1500 VA, cos φ = 1, P max. 750 VA, cos φ > 0.7
- version DC: I max. 6 A to 30 V, I max. 0.2 A to 125 V
- the following applies when connecting a functional extra-low voltage circuit with double insulation as per IEC 1010: sum of voltages of relay output and power supply max. 300 V
Switch-on delaycorrect switching after max. 3 s
Output signaldigital
Signal on alarmelectronic insert FEM22 (E5): output signal on power failure or in the event of device failure - < 100 µA
electronic insert FEM24 (WA): output signal in event of power failure - relay de-energised
Galvanic isolation
Input/power supplyelectronic insert FEM22 (E5)
Input/Other circuitselectronic insert FEM24 (WA)
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2006 , EN 61326-2-3:2006
Low voltage
Directive 2014/35/EUelectronic insert FEM24 (WA) : EN 61010-1:2010
Electromagnetic compatibilityNE 21
Degree of protectionIEC 60529:2001
Vibration resistanceEN 60068-2-27
Climate classEN 60068, part 2-38, fig. 2a
Measurement accuracy
Measuring frequency700 ... 800 Hz
Switching timewhen covering the sensor approx. 0.5 s, when uncovering the sensor approx. 1.0 s
Operating conditions
Installation conditions
Installation positionsee section mounting position
Process conditions
Process temperature-40 ... 150 °C (-40 ... 302 °F)
Medium pressure limits-1 ... 25 bar
max. working pressure 25 bar, burst pressure 100 bar
Thermal shock resistancemax. 120 K
State of aggregationsolids
Solid contents≤ ∅25 mm
Bulk density≥ 200 g/l, not fluidised
Ambient conditions
Ambient temperature-40 ... 70 °C (-40 ... 158 °F)
Storage temperature-40 ... 85 °C (-40 ... 185 °F)
Mechanical specifications
Degree of protectionIP66/IP67, NEMA 4X
Connectiongland M20
thread G1/2, NPT1/2
MaterialF16 housing: PTB-FR, cover with transparent glass made of PA12, EPDM cover seal
F18 housing: aluminum EN-AC-AlSi10Mg, plastic coated
cover seal: EPDM
process connections, sensor: stainless steel 1.4435/316L
Massdevice with F16 housing, electronic insert FEM24 (WA) and R1 thread: approx. 1.0 kg
Dimensionsmax. ∅85 mm (3.3 inch), length 372 mm (14.6 inch)
Process connectionthread R1, R1-1/2 acc. to DIN 2999
thread 1-1/4 - 11-1/2 NPT, 1-1/2 - 11-1/2 NPT acc. to ANSI B 1.20.1
Data for application in connection with hazardous areas
EU-type examination certificatesee instruction manuals (SI)
International approvals
IECEx approvalIECEx DEK 11.0068
Approved forEx ta/tc IIIC T170°C Da/Dc
General information
Supplementary documentationtechnical information (TI)
manuals, brief instructions (BA, KA)
instruction manuals (SI)
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see


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-B1

Product Documentation: LVL-B1

Language Selection:
Product informationLinguaFile tipoDimensioni
TI00389O, Technical information LVL-B*ENGPDF1130 KB
Brief Instructions
KA00227O, brief instructions LVL-B* / KA00227O, Kurzanleitung LVL-B*ALLPDF2503 KB
Safety and Security Documentation
SI00300O, Instruction manual LVL-B*ENGPDF793 KB
SI00424O, Instruction manual LVL-B*ENGPDF520 KB

Approvals: LVL-B1

Language Selection:
CertificatesCertificato NumeroLinguaFile tipoDimensioni
Canada, USA CSACoC 1810432ALLPDF241 KB
DEKRA Ex ta/tc IECEx Certificate of ConformityIECEx DEK 11.0068ALLLINK---
Europe KEMA ATEX Category 1/3 DKEMA 06 ATEX 0055ALLPDF2310 KB
Declaration of Conformity
EU-Declaration of conformity / EU-KonformitätserklärungDOC-2217CALLPDF79 KB
EU-Declaration of conformity / EU-KonformitätserklärungDOC-2357CALLPDF100 KB
EU-Declaration of conformity / EU-KonformitätserklärungDOC-2218CALLPDF77 KB
Contamination Declaration
Declaration of Contamination / Erklärung zur Kontamination   ALLPDF137 KB
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