Pepperl+Fuchs LVL-A7-BG1A-E5V1-CG-EMS
Vibration Limit Switch

Pepperl+Fuchs LVL-A7-BG1A-E5V1-CG-EMS
  • Limit switch for liquids
  • Process connection G1/2
  • Suitable for process temperatures up to 150 В°C (302 В°F)
  • Rugged stainless steel housing
  • Onsite function check possible thanks to LED indication
  • External function test with test magnet
Item Number: LVL-A7-BG1A-E5V1-CG-EMS
283.50
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Total price: 283.50
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  • Overview
  • Comments
Rated voltage10 ... 35 V DC
Hysteresismax. 3 mm
Output typeswitch output
Measuring methodThe tuning fork is brought to its resonance frequency by means of a piezoelectric drive. If the tuning fork is covered by liquid, this frequency changes. The electronics monitor the resonance frequency and indicate whether the tuning fork is freely vibrating or is covered by liquid.
Vibration resistanceEN 60068-2-64
Measurement rangemin. 0.7 g/cm3
Measuring frequencyapprox. 1100 Hz in air
Residual ripple5 V ss at 0 ... 400 Hz
Materialprocess connection and short tube: stainless steel 316L (1.4401/1.4435)
tuning fork: stainless steel 316L
housing cover and connector: PPSU
Process connectionthread G1/2 to ISO 228
Designationsee technical information (TI)
Degree of protectionIEC 60529
Display elementsThe LED display is on the connection side.
- green LED: indication of ready to operate
- red LED: fault indication
- yellow LED: operating mode indication
Construction typecompact device
Influence of medium temperature-25 andmicro;m/В°C
CSA approvalcCSAus Listed, General Purpose
Climate classDIN EN 60068-2-38/IEC 68-2-38
Reference operating conditions- ambient temperature: 25 В°C (+77 В°F)
- process pressure: 1 bar (14.5 psi)
- fluid: water (density: approx. 1 g/cm3, viscosity: 1 mm2/s)
- medium temperature: 25 В°C (+77 В°F)
- density setting: > 0.7 g/cm3
- switching time delay: standard (0,5 s, 1 s)
ConnectionThis device may be used with any sequential circuit, as long as the circuit can support the electrical circuit values of the switching elements.
Current consumption< 15 mA
Non-repeatabilityВ± 1 mm acc. to DIN 61298-2
Measured variabledensity
Power consumption975 mW
Supplementary documentationtechnical information (TI)
manual (BA)
approval (ZE)
Switch-on delaymax. 3 s
Measured value resolution< 0.5 mm
Switching currentmax. 250 mA
Influence of medium pressure-20 andmicro;m/bar
Supplementary informationStatement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see www.pepperl-fuchs.com.
Degree of protectionIP65/IP67 , NEMA 4X
Shock resistanceEN 60068-2-27
Surface qualityRa < 3.2 andmicro;m
Fusingexternal 500 mA slow
Switching point13 mm В± 1 mm
Switching time- 0.5 s when tuning fork is covered
- 1.0 s when tuning fork is uncovered
ConnectionM12 connector, 4-pin
Electromagnetic compatibilityNE 21
Function testfunction test with test magnet (optional accessory)
Influence of ambient temperaturenegligible
Overspill protectionsee approval (ZE)
Operating modeMAX = maximum safety:
The device keeps the electronic switch closed as long as the liquid level is below the fork.
example application: overspill protection
MIN = minimum safety:
The device keeps the electronic switch closed as long as the fork is immersed in liquid.
example application: dry running protection of pumps
The electronic switch opens if the limit is reached, if a fault occurs or in the event of a power fails (quiescent current principle)
Massapprox. 140 g

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