Pepperl+Fuchs LVL-A7-BG1A-E5V1-CG-EMS
Vibration Limit Switch
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- Limit switch for liquids
- Process connection G1/2
- 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-BG1A-E5V1-CG-EMS
Delivery standard: 3-6 weeks, depending on the country.
Condition: new
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- Overview +
- Comments +
| Rated voltage | 10 ... 35 V DC |
| Hysteresis | max. 3 mm |
| Output type | switch output |
| 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. |
| Vibration resistance | EN 60068-2-64 |
| Measurement range | min. 0.7 g/cm3 |
| Measuring frequency | approx. 1100 Hz in air |
| Residual ripple | 5 V ss at 0 ... 400 Hz |
| Material | process connection and short tube: stainless steel 316L (1.4401/1.4435) tuning fork: stainless steel 316L housing cover and connector: PPSU |
| Process connection | thread G1/2 to ISO 228 |
| Designation | see technical information (TI) |
| Degree of protection | IEC 60529 |
| 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 |
| Construction type | compact device |
| Influence of medium temperature | -25 andmicro;m/?°C |
| CSA approval | cCSAus Listed, General Purpose |
| Climate class | DIN EN 60068-2-38/IEC 68-2-38 |
| 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) |
| 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. |
| Current consumption | < 15 mA |
| Non-repeatability | ?± 1 mm acc. to DIN 61298-2 |
| Measured variable | density |
| Power consumption | 975 mW |
| Supplementary documentation | technical information (TI) manual (BA) approval (ZE) |
| Switch-on delay | max. 3 s |
| Measured value resolution | < 0.5 mm |
| Switching current | max. 250 mA |
| Influence of medium pressure | -20 andmicro;m/bar |
| 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. |
| Degree of protection | IP65/IP67 , NEMA 4X |
| Shock resistance | EN 60068-2-27 |
| Surface quality | Ra < 3.2 andmicro;m |
| Fusing | external 500 mA slow |
| Switching point | 13 mm ?± 1 mm |
| Switching time | - 0.5 s when tuning fork is covered - 1.0 s when tuning fork is uncovered |
| Connection | M12 connector, 4-pin |
| Electromagnetic compatibility | NE 21 |
| Function test | function test with test magnet (optional accessory) |
| Influence of ambient temperature | negligible |
| Overspill protection | see approval (ZE) |
| 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) |
| Mass | approx. 140 g |
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