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  6. LVL-B2

LVL-B2 Vibration Limit SwitchVibracon

Key Benefits at a Glance

  • Limit switch for bulk solids
  • Device with tube extension
  • 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

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Product photo: Vibration Limit Switch LVL-B2
Product photo: Vibration Limit Switch LVL-B2
Product Compliance: Europe – CE
Approval
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.

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DatasheetFunctionClassificationProduct DocumentationApprovals

Technical data of LVL-B2

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 typedevice with tube extension
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-B2
Rated voltageUrelectronic 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
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)
Measuring rangeThe measuring range depends on the mounting location of the device and the length of the pipe extension selected.
The pipe extension is available in the following lengths: 500 mm, 1000 mm, 1500 mm, 20 inch, 40 inch, 60 inch
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 delaytoncorrect 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
Input/power supplyelectronic insert FEM22 (E5)
Input/Other circuitselectronic insert FEM24 (WA)
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
Measuring frequency700 ... 800 Hz
Switching timewhen covering the sensor approx. 0.5 s, when uncovering the sensor approx. 1.0 s
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 temperature-40 ... 70 °C (-40 ... 158 °F)
Storage temperature-40 ... 85 °C (-40 ... 185 °F)
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:
- 500 mm (20 inch) = approx. 1.3 kg
- 1000 mm (40 inch) = approx. 2.0 kg
- 1500 mm (60 inch) = approx. 2.6 kg
Dimensionsmax. ∅85 mm (3.3 inch), length 160 mm (6.3 inch) + L
L = 500 mm, 1000 mm, 1500 mm, 20 inch, 40 inch, 60 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
EU-type examination certificatesee instruction manuals
IECEx approvalsee instruction manuals
Supplementary documentationtechnical information (TI)
manuals, brief instructions (BA, KA)
instruction manuals
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
Designation- LVL-Z200 sliding sleeve for pressurized container
- LVL-Z201 sliding sleeve for pressurized container
- LVL-Z202 sliding sleeve for unpressurized container
- LVL-Z203 sliding sleeve for unpressurized container
General Notes
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