Serviceline Industrial Sensors
Serviceline Explosion Protection

Vibration Limit Switch LVL-A7-BG4B-E5PU-CG-EMS

LVL-A7-BG4B-E5PU-CG-EMS
  • Limit switch for liquids
  • Process connection G1
  • Suitable for process temperatures up to 150 °C (302 °F)
  • Rugged stainless steel housing
  • Onsite function check possible thanks to LED indication
  • External function test with test magnet

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, also apply to Pepperl+Fuchs AG.

Download the complete datasheet as a PDF:


Datasheet excerpt: Technical data of  LVL-A7-BG4B-E5PU-CG-EMS

General specifications
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.
Construction typedevice with short tube
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)
Supply
ConnectionThis device may be used with any sequential circuit, as long as the circuit can support the electrical circuit values of the switching elements.
Rated voltage10 ... 35 V DC
Fusingexternal 500 mA slow
Current consumption< 15 mA
Power consumption975 mW
Residual ripple5 V ss at 0 ... 400 Hz
Input
Measured variabledensity
Measurement rangemin. 0.7 g/cm3
Output
Output typeswitch output
Switching currentmax. 250 mA
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2006 , EN 61326-2-3:2006
Directive 2004/108/ECEN 61326-1:2006 , EN 61326-2-3:2006
Conformity
Electromagnetic compatibilityNE 21
Degree of protectionIEC 60529
Shock resistanceEN 60068-2-27
Vibration resistanceEN 60068-2-64
Climate classDIN EN 60068-2-38/IEC 68-2-38
Measurement accuracy
Reference operating conditions- ambient temperature: 25 °C (+77 °F)
- process pressure: 1 bar (14.5 psi)
- fluid: water (density: approx. 1 g/cm3, viscosity: 1 mm2/s)
- medium temperature: 25 °C (+77 °F)
- density setting: > 0.7 g/cm3
- switching time delay: standard (0,5 s, 1 s)
Measured value resolution< 0.5 mm
Measuring frequencyapprox. 1100 Hz in air
Switching point13 mm ± 1 mm
Non-repeatability± 1 mm acc. to DIN 61298-2
Hysteresismax. 3 mm
Influence of ambient temperaturenegligible
Influence of medium temperature-25 µm/°C
Influence of medium pressure-20 µm/bar
Switching time- 0.5 s when tuning fork is covered
- 1.0 s when tuning fork is uncovered
Switch-on delaymax. 3 s
Operating conditions
Installation conditions
Installation positionsee technical information (TI)
Ambient conditions
Ambient temperature-40 ... 70 °C (-40 ... 158 °F)
Storage temperature-40 ... 85 °C (-40 ... 185 °F)
Shock resistancea = 300 m/s2 = 30 g, 3 planes x 2 directions x 3 shocks x 18 ms, as per test Ea
Vibration resistancea(RMS) = 50 m/s2, ASD = 1.25 (m/s2)2/Hz, f = 5 to 2000 Hz, t = 3 x 2 h
Process conditions
Medium temperature-40 ... 150 °C (-40 ... 302 °F)
Process pressure (static pressure)-1 ... +40 bar (-14.5 ... +580 psi)
State of aggregationliquid
Densitymin. 0.7 g/cm3
Viscosity1 ... 10000 mPa/s, dynamic viscosity
Solid contents< ∅5 mm
Mechanical specifications
Degree of protectionIP65 , NEMA 4X
Connectionvalve connector M16
Materialprocess connection and short tube: stainless steel 316L (1.4401/1.4435)
tuning fork: stainless steel 316L
housing cover and connector: PPSU
Surface qualityRa < 3.2 µm
Massapprox. 169 g
Process connectionthread G1 acc. to ISO 228
Indication and operation
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
Function testfunction test with test magnet (optional accessory)
Certificates and approvals
CSA approvalcCSAus Listed, General Purpose
Overspill protectionsee approval (ZE)
General information
Supplementary documentationtechnical information (TI)
manual (BA)
approval (ZE)
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.
Accessories
Designationsee technical information (TI)

Documents: LVL-A7-BG4B-E5PU-CG-EMS

ManualsLanguageFile TypeFile Size
BA01285O, Manual LVL-A7ENGPDF2649 KB
BA01285O, Handbuch LVL-A7GERPDF2652 KB
Instruction manuals
ZE01010O, Zulassung WHG Z-65.11-554 LVL-A7, LVL-A7HGERPDF1123 KB
ZE01011O, Zulassung WHG Z-65.40-555 LVL-A7, LVL-A7HGERPDF1133 KB
Technical information
Declaration of Contamination / Erklärung zur KontaminationALLPDF137 KB
TI01147O, Technical information LVL-A7ENGPDF2367 KB
TI01147O, Technische Information LVL-A7GERPDF2370 KB

Approvals+Certificates: LVL-A7-BG4B-E5PU-CG-EMS

CertificatesCertificate No.File TypeFile Size
Canada, USA CSACoC 2876507 cUSPDF34 KB

Function: LVL-A7-BG4B-E5PU-CG-EMS

The Vibracon LVL-A7 is a limit switch for liquids and is used in tanks, vessels and pipes. The device is used for overfill prevention or pump protection in cleaning and filter systems as well as in cooling and lubrication vessels, for instance.

The device is suitable for applications in which float switches or conductive, capacitance and optical sensors have been used up to now. The device also works in areas where these measuring principles are not suitable due to conductivity, buildup, turbulence, flow conditions or air bubbles.

The device can be used for process temperatures up to 150 °C (302 °F).

The device is not suitable for use in hazardous areas.

For hygienic areas we recommend the use of Vibracon LVL A7H.