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.
Téléchargez ici la fiche technique complète en PDF:
Caractéristiques techniques 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
Fonction
Le Vibracon LVL-A7 est un détecteur de seuil pour les liquides, utilisé dans les réservoirs, cuves et canalisations. L'appareil est utilisé pour la prévention des débordements ou la protection des pompes dans les systèmes de nettoyage et de filtrage, ainsi que dans les cuves de refroidissement et de lubrification, par exemple.
L'appareil est adapté aux applications qui utilisaient jusqu'à présent des interrupteurs à flotteur ou des détecteurs conductifs, capacitifs ou optiques. L'appareil fonctionne également dans les zones non compatibles avec ces principes de détection, en raison de la conductivité, de la montée de pression, des turbulences, des flux ou des bulles d'air.
Il est possible d'utiliser l'appareil à des températures de fonctionnement allant jusqu'à :
- 100 °C (212 °F)
- 150 °C (302 °F)
L'appareil n'est pas adapté à une utilisation en zone à risque d'explosion.
Pour les zones ayant des exigences d'hygiène élevées, nous recommandons l'utilisation du modèle Vibracon LVL-A7H.
Product Documentation: LVL-A7
| Product information | Langue | Type de fichier | Taille |
|---|---|---|---|
| TI01147O, Technical information LVL-A7 | ENG | 2367 KB | |
| Manuals | |||
| BA01285O, Manual LVL-A7 | ENG | 2649 KB | |
Design / Simulation: LVL-A7
| CAD | Langue | Type de fichier | Taille |
|---|---|---|---|
| 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 | Identification | Langue | Type de fichier | Taille |
|---|---|---|---|---|
| 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 | ||
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Pepperl+Fuchs Eurl
12 Avenue des Tropiques
91955 Courtaboeuf Cedex
France
info@fr.pepperl-fuchs.com
+33 1 60921300
Pepperl+Fuchs est leader comme concepteur et fabricant de capteurs et composants électroniques pour le marché mondial de l'automatisation. L'innovation constante, la qualité incontestable et la croissance soutenue, garantissent notre succès, depuis plus de 70 ans. Pepperl+Fuchs emploie 6300 personnes dans le monde et compte des usines en Allemagne, aux USA, à Singapour, en Hongrie, en Indonésie et au Vietnam ; la plupart d'entre elles sont certifiées ISO 9001.