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Vibration Limit Switch LVL-A7

LVL-A7
  • Limit switch for liquids
  • Onsite function check possible thanks to LED indication
  • Large selection of process connections for hassle-free installation in existing systems
  • Easy to install even at points difficult to access due to compact design
  • Rugged stainless steel housing
  • Cost-saving plug connections
  • Approval as overfill protection and leak detection system acc. to WHG

请注意：所有以Pepperl + Fuchs GmbH或Pepperl + Fuchs AG名义发行的产品相关文件，例如证书，合格声明等，同样适用于Pepperl + Fuchs SE。

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技术参数节选  LVL-A7

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 typecompact device
device 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)
SeriesVibracon LVL-A7
Supply
Rated voltage- DC-PNP: 10 ... 35 V DC, 3-wire
- AC/DC: 20 ... 253 V AC/DC, 2-wire
Current consumption- DC-PNP: < 15 mA
- AC/DC: < 3.8 mA
Power consumption- DC-PNP: < 975 mW
- AC/DC: < 850 mW
Input
Measured variabledensity
Measuring rangemin. 0.7 g/cm3, optional> 0.5 g/cm3
Output
Output typeswitching output
Switching currentmax. 250 mA
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2006 , EN 61326-2-3:2006
Low voltage
Directive 2014/35/EUEN 61010-1:2010
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
- other switching times on request
Operating conditions
Installation conditions
Installation positionsee section mounting position
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
Process temperature-40 ... +100 °C (-40 ... +212 °F)
-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, optional> 0.5 g/cm3
Viscosity1 ... 10000 mPa/s, dynamic viscosity
Solid contents< ∅5 mm
Mechanical specifications
Degree of protection- IP65/IP67, NEMA 4X enclosure (plug M12)
- IP65, NEMA 4X enclosure (valve plug)
- IP65/68, NEMA 4X/6P enclosure (cable)
Connection- cable 5 m
- valve plug NPT1/2
- valve plug QUICKON
- valve plug M16
- plug M12
Materialsee technical information (TI)
Surface qualityRa < 3.2 µm
Masssee technical information (TI)
Dimensionssee technical information (TI)
Process connection- thread ISO 228 G1/2, G3/4, G1
- thread EN 10226 R1/2, R3/4, R1
- thread ASME MNPT1/2, MNPT3/4, MNPT1
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
Overspill protectionZ-65.11-554 (overspill protection acc. to WHG)
Z-65.40-555 (leak detection system acc. to WHG)
If you need the approvals also in paper form, select the option WH in the type code.
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 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
Product category / 产品类的液位测量仪

Details: LVL-A7

Product Documentation: LVL-A7

选择语言:
Product information语言文件类型文件大小
TI01147O, Technical information LVL-A7ENGPDF2367 KB
Manuals
BA01285O, Manual LVL-A7ENGPDF2649 KB

Approvals: LVL-A7

选择语言:
Certificates证书号码语言文件类型文件大小
Canada, USA CSACoC 2876507 cUSALLPDF34 KB
Europe DIBT WHG Leak DetectionZ-65.40-555ALLPDF517 KB
Europe DIBT WHG Overspill ProtectionZ-65.11-554ALLPDF498 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)DOC-2381BALLPDF308 KB
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)DOC-2380BALLPDF261 KB
Contamination Declaration
Contamination declaration / Kontaminationserklärung   ALLPDF137 KB
General Notes Relating to Pepperl+Fuchs Product Information
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倍加福（北京）过程自动化控制设备有限公司
北京市经济技术开发区
科创十四街99号7号楼3101室
101111 Beijing
中国
pa-info@cn.pepperl-fuchs.com
phone +86 10 5901 7000

上海倍加福工业自动化贸易有限公司
上海市静安区市北工业园区江场三路
219号4楼
200436 上海
中国
fa-info@cn.pepperl-fuchs.com
phone +86 21 6630 3939

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