Vibration Limit Switch 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
Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.
Download the complete datasheet as a PDF:
Datasheet excerpt: Technical data of LVL-A7
| 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 | compact device 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) |
|
| Series | Vibracon 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 variable | density | |
| Measuring range | min. 0.7 g/cm3, optional> 0.5 g/cm3 | |
| Output | ||
| Output type | switching output | |
| Switching current | max. 250 mA | |
| Directive conformity | ||
| Electromagnetic compatibility | ||
| Directive 2014/30/EU | EN 61326-1:2006 , EN 61326-2-3:2006 | |
| Low voltage | ||
| Directive 2014/35/EU | EN 61010-1:2010 | |
| 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 - other switching times on request |
|
| Operating conditions | ||
| Installation conditions | ||
| Installation position | see section mounting position | |
| 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 | ||
| 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 aggregation | liquid | |
| Density | min. 0.7 g/cm3, optional> 0.5 g/cm3 | |
| Viscosity | 1 ... 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 |
|
| Material | see technical information (TI) | |
| Surface quality | Ra < 3.2 µm | |
| Mass | see technical information (TI) | |
| Dimensions | see 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 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 | ||
| Overspill protection | Z-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 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. For information see www.pepperl-fuchs.com. | |
| Accessories | ||
| Designation | see technical information (TI) | |
Classifications
| System | Classcode |
|---|---|
| ECLASS 13.0 | 27200518 |
| ECLASS 12.0 | 27200518 |
| ECLASS 11.0 | 27200518 |
| ECLASS 10.0.1 | 27200518 |
| ECLASS 9.0 | 27200589 |
| ECLASS 8.0 | 27200589 |
| ECLASS 5.1 | 27200589 |
| ETIM 9.0 | EC001447 |
| ETIM 8.0 | EC001447 |
| ETIM 7.0 | EC001447 |
| ETIM 6.0 | EC001447 |
| ETIM 5.0 | EC001447 |
| UNSPSC 12.1 | 41111950 |
Details: LVL-A7
Function
The Vibracon LVL-A7 is a limit switch for liquids and is used in tanks, vessels and pipes. The device is used for overfill prevention or pump protection in cleaning and filter systems as well as in cooling and lubrication vessels, for instance.
The device is suitable for applications in which float switches or conductive, capacitance and optical sensors have been used up to now. The device also works in areas where these measuring principles are not suitable due to conductivity, buildup, turbulence, flow conditions or air bubbles.
The device can be used for process temperatures up to:
- 100 °C (212 °F)
- 150 °C (302 °F)
The device is not suitable for use in hazardous areas.
For hygienic areas we recommend the use of Vibracon LVL A7H.
Product Documentation: LVL-A7
| Product information | Language | File Type | File Size |
|---|---|---|---|
| TI01147O, Technical information LVL-A7 | ENG | 2367 KB | |
| Manuals | |||
| BA01285O, Manual LVL-A7 | ENG | 2649 KB | |
Design / Simulation: LVL-A7
| CAD | Language | File Type | File Size |
|---|---|---|---|
| 3-D model LVL-A7-AG1A-XXPX-XX / 3-D-Modell LVL-A7-AG1A-XXPX-XX | ALL | STP | 3085 KB |
| 3-D model LVL-A7-AG1A-XXV1-XX / 3-D-Modell LVL-A7-AG1A-XXV1-XX | ALL | STP | 1813 KB |
| 3-D model LVL-A7-AG1A-XXV1-XX / 3-D-Modell LVL-A7-AG1A-XXV1-XX | ALL | STP | 2055 KB |
| 3-D model LVL-A7-AG1B-XXV1-XX / 3-D-Modell LVL-A7-AG1B-XXV1-XX | ALL | STP | 1920 KB |
| 3-D model LVL-A7-AG1B-XXV1-XX / 3-D-Modell LVL-A7-AG1B-XXV1-XX | ALL | STP | 2070 KB |
| 3-D model LVL-A7-AG3A-E5PU-NA / 3-D-Modell LVL-A7-AG3A-E5PU-NA | ALL | STP | 304 KB |
| 3-D model LVL-A7-AG4B-XX-V1-XX / 3-D-Modell LVL-A7-AG4B-XX-V1-XX | ALL | STP | 205 KB |
| 3-D model LVL-A7-AG4B-XXPU-XX / 3-D-Modell LVL-A7-AG4B-XXPU-XX | ALL | STP | 2939 KB |
| 3-D model LVL-A7-BG1A-XXPU-XX / 3-D-Modell LVL-A7-BG1A-XXPU-XX | ALL | STP | 3124 KB |
| 3-D model LVL-A7-BG3B-XXV1-XX / 3-D-Modell LVL-A7-BG3B-XXV1-XX | ALL | STP | 2065 KB |
Approvals: LVL-A7
| Certificates | Certificate No. | Language | File Type | File Size |
|---|---|---|---|---|
| Canada, USA CSA | CoC 2876507 cUS | ALL | 34 KB | |
| Europe DIBT WHG Leak Detection | Z-65.40-555 | ALL | 517 KB | |
| Europe DIBT WHG Overspill Protection | Z-65.11-554 | ALL | 498 KB | |
| Declaration of Conformity | ||||
| EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F) | DOC-2381B | ALL | 308 KB | |
| EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F) | DOC-2380B | ALL | 261 KB | |
| Contamination Declaration | ||||
| Contamination declaration / Kontaminationserklärung | ALL | 137 KB | ||
Several hundred products with a SIL/PL assessment, free tools, and brochures in one place: the "Functional Safety Hub" is your starting point when you have to implement safety functions.
Pepperl+Fuchs SE
Lilienthalstraße 200
68307 Mannheim
Germany
info@de.pepperl-fuchs.com
+49 621 776-0
Pepperl+Fuchs is a leading developer and manufacturer of electronic sensors and components for the global automation market. Continuous innovation, enduring quality, and steady growth have been the foundation of our success for more than 70 years. Pepperl+Fuchs employs 6,300 people worldwide and has manufacturing facilities in Germany, USA, Singapore, Hungary, Indonesia and Vietnam, most of them ISO 9001 certified.