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LVL-A7-BG4B-E5PU-CG-EMS液体限位开关现货供应

LVL-A7-BG4B-E5PU-CG-EMS液体限位开关现货供应

       液位限位开关LVL-A7-BG4B-E5PU-CG-EMS，Fuxb automation will serve you wholeheartedly！ +86-021-51601058

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倍加福液位限位开关LVL-A7-BG4B-E5PU-CG-EMS现货供应
LVL-A7-BG4B-E5PU-CG-EMS
产品特性
       ▷ 液体限位开关
       ▷ 过程连接G1
       ▷ 适用于最高150°C（302°F）的过程温度
       ▷ 坚固的不锈钢外壳
       ▷ 通过LED指示可以进行现场功能检查
       ▷ 使用测试磁铁进行外部功能测试

General specifications
Measuring method The 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 type device with short tube
Operating mode MAX = 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
Connection This device may be used with any sequential circuit, as long as the circuit can support the electrical circuit values of the switching elements.
Rated voltage 10 ... 35 V DC
Fusing external 500 mA slow
Current consumption < 15 mA
Power consumption 975 mW
Residual ripple 5 V ss at 0 ... 400 Hz
Input
Measured variable density
Measurement range min. 0.7 g/cm3
Output
Output type switch output
Switching current max. 250 mA
Directive conformity
Electromagnetic compatibility  
  Directive 2014/30/EU EN 61326-1:2006 , EN 61326-2-3:2006
  Directive 2004/108/EC EN 61326-1:2006 , EN 61326-2-3:2006
Conformity
Electromagnetic compatibility NE 21
Degree of protection IEC 60529
Shock resistance EN 60068-2-27
Vibration resistance EN 60068-2-64
Climate class DIN 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 frequency approx. 1100 Hz in air
Switching point 13 mm ± 1 mm
Non-repeatability ± 1 mm acc. to DIN 61298-2
Hysteresis max. 3 mm
Influence of ambient temperature negligible
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 delay max. 3 s
Operating conditions
Installation conditions  
  Installation position see technical information (TI)
Ambient conditions  
  Ambient temperature -40 ... 70 °C (-40 ... 158 °F)
  Storage temperature -40 ... 85 °C (-40 ... 185 °F)
  Shock resistance a = 300 m/s2 = 30 g, 3 planes x 2 directions x 3 shocks x 18 ms, as per test Ea
  Vibration resistance a(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 aggregation liquid
  Density min. 0.7 g/cm3
  Viscosity 1 ... 10000 mPa/s, dynamic viscosity
  Solid contents < ∅5 mm
Mechanical specifications
Degree of protection IP65 , NEMA 4X
Connection valve connector M16
Material process connection and short tube: stainless steel 316L (1.4401/1.4435)
tuning fork: stainless steel 316L
housing cover and connector: PPSU
Surface quality Ra < 3.2 µm
Mass approx. 169 g
Process connection thread G1 acc. to ISO 228
Indication and operation
Display elements The LED display is on the connection side.
- green LED: indication of ready to operate
- red LED: fault indication
- yellow LED: operating mode indication
Function test function test with test magnet (optional accessory)
Certificates and approvals
CSA approval cCSAus Listed, General Purpose
Overspill protection see approval (ZE)
General information
Supplementary documentation technical information (TI)
manual (BA)
approval (ZE)
Supplementary information Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. 
Accessories
Designation see technical information (TI)

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