LF20 MOLOSbob continuous Mollet level gauge

Iskanje

Šifra: LF20


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Delivery time: approximately 3-4 weeks

  • Supply voltage: 90 … 253 V AC, 50/60 Hz or 20 … 28 V DC
  • Process connection: flange DN100 PN16 / 4” Alu
  • measuring range: 0 m … 42 m
  • Medium/material temperature: -20 °C … +150 °C
  • ambient temperature: -40 °C … +60 °C
  • ATEX certificates ATEX II 1/2D Ex ta/tb IIIC T99 °C Da/Db
  • IP protection rating: IP67 / EN60529
MOLLET

Description

The LF20 continuous level gauge is suitable for level measurement in silos of different sizes.

The detectable weight is lowered into the silo or hopper on a steel strap. As soon as the weight touches the surface, the tensile force on the strap is reduced. This reduced tensile force is detected by the LF20 electronics and the lowering of the weight stops immediately. After this, an output signal of 4-20 mA proportional to the measured distance shall be given and the sensing weight shall be returned to its final position, the specified measured value being retained until the start of the next measurement cycle.

Different sensing weights allow accurate level measurements, independent of the density or grain size of the bulk cargo (loose material). This signal can be visualised by simple and easy-to-read display units mounted in the switch box.

Features of LF20

  • reliable and continuous level measurement up to a silo height of 42 m
  • not affected by dust, moisture, conductivity or grain size of the bulk cargo (loose material)
  • measurement in silos under severe temperature conditions up to 150 °C
  • no part in the silos or containers shall affect the measuring process
  • high accuracy of ± 2.5 cm actual fill rate measurement
  • four-way display for easy menu navigation and local control
  • possible use in areas where there is a risk of dust, category 1 / 2D
  • 4-20 mA current output and up to 4 freely programmable signal outputs
  • protection type IP67 according to EN 60529
  • compact yet robust design with low weight
  • Specially designed wiper belt prevents contamination of the inner housings
  • no movement in the silo discharge due to full electronic digital fail-safe mode.

Application of LF20

Reliable continuous level measurement in silos, bins and hoppers filled with powdery, granular and granular bulk materials such as gravel, sand, cement, concrete, lime, gypsum, crushed stones, animal feed, fishmeal, milk powder, grain, spices, salt, sugar, flour, coffee, cocoa, cereals, graphite, fertiliser, zinc sulphate, aluminium oxide, polystyrene, plastic granulate, plastic powder, filler, wood pellets, wood chips, sawdust, sawdust, foam flakes, ash, fly ash, slag, soot, coal, coke and many others.

Interface measurement and fluid level measurement are also possible.

Typical uses include:

  • continuous level measurement in PVC silos used for the production of dry-mixed products
  • continuous level measurement in grain storage silos for animal feed production
  • continuous level measurement at the top of the coal mine in the power plant
  • continuous level measurement in mineral-filled silos for the production of mineral plasters

LF20 measurement process

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