Pepperl+Fuchs LVL-A7-BG4B-E5PU-CG-EMS
Vibration Limit Switch
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- 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
Item Number:
LVL-A7-BG4B-E5PU-CG-EMS
Delivery standard: 3-6 weeks, depending on the country.
Condition: new
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| 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) |
| Measured value resolution | < 0.5 mm |
| 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. |
| Switch-on delay | max. 3 s |
| Function test | function test with test magnet (optional accessory) |
| Output type | switch output |
| Shock resistance | EN 60068-2-27 |
| 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 |
| 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. |
| Climate class | DIN EN 60068-2-38/IEC 68-2-38 |
| Switching time | - 0.5 s when tuning fork is covered - 1.0 s when tuning fork is uncovered |
| Rated voltage | 10 ... 35 V DC |
| Supplementary information | Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see www.pepperl-fuchs.com. |
| Measuring frequency | approx. 1100 Hz in air |
| Electromagnetic compatibility | NE 21 |
| Mass | approx. 169 g |
| Influence of medium pressure | -20 andmicro;m/bar |
| Material | process connection and short tube: stainless steel 316L (1.4401/1.4435) tuning fork: stainless steel 316L housing cover and connector: PPSU |
| Supplementary documentation | technical information (TI) manual (BA) approval (ZE) |
| Non-repeatability | ?± 1 mm acc. to DIN 61298-2 |
| Influence of ambient temperature | negligible |
| Process connection | thread G1 acc. to ISO 228 |
| CSA approval | cCSAus Listed, General Purpose |
| Measurement range | min. 0.7 g/cm3 |
| Switching current | max. 250 mA |
| Current consumption | < 15 mA |
| Fusing | external 500 mA slow |
| Vibration resistance | EN 60068-2-64 |
| Construction type | device with short tube |
| Measured variable | density |
| Switching point | 13 mm ?± 1 mm |
| Residual ripple | 5 V ss at 0 ... 400 Hz |
| Influence of medium temperature | -25 andmicro;m/?°C |
| 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) |
| Designation | see technical information (TI) |
| Connection | valve connector M16 |
| Surface quality | Ra < 3.2 andmicro;m |
| Hysteresis | max. 3 mm |
| Degree of protection | IP65 , NEMA 4X |
| Power consumption | 975 mW |
| Degree of protection | IEC 60529 |
| Overspill protection | see approval (ZE) |
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