LVL-A7-BG4B-E5PU-CG..EMS PEPPERL+FUCHS - Part number: 275573-100030

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 protectionMIN = minimum safety:The device keeps the electronic switch closed as long as the fork is immersed in liquid.example application: dry running protection of pumpsThe 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: 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 frequency1100 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 316Lhousing cover and connector: PPSU Surface qualityRa < 3.2 µm Mass169 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) Classifications SystemClasscode ECLASS 11.027200518 ECLASS 10.0.127200518 ECLASS 9.027200589 ECLASS 8.027200589 ECLASS 5.127200589 ETIM 8.0EC001447 ETIM 7.0EC001447 ETIM 6.0EC001447 ETIM 5.0EC001447 UNSPSC 12.141111950 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 protectionMIN = minimum safety:The device keeps the electronic switch closed as long as the fork is immersed in liquid.example application: dry running protection of pumpsThe 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: 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 frequency1100 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 316Lhousing cover and connector: PPSU Surface qualityRa < 3.2 µm Mass169 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) Classifications SystemClasscode ECLASS 11.027200518 ECLASS 10.0.127200518 ECLASS 9.027200589 ECLASS 8.027200589 ECLASS 5.127200589 ETIM 8.0EC001447 ETIM 7.0EC001447 ETIM 6.0EC001447 ETIM 5.0EC001447 UNSPSC 12.141111950