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MOLOSbob LF Yo-Yo sensing level measurement

MOLLET Fllstandtechnik GmbH company

Country/Region:China

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MOLOSbob LF Yo-Yo sensing level measurement

Country/Region china

Company MOLLET Fllstandtechnik GmbH company

Categories Steel Measuring Tape

Update 2017-02-21 10:52:05

ICP License Issued by the Chinese Ministry

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A sensing weight is driven down into the silo or hopper with a steel band. As soon as the weight touches the surface, the tensile force on the tape decreases. This reduced tensile force is detected by the electronic of the MOLOSbob LF20 and the lowering of the weight is stopped immediately. After this a 4-20 mA current output signal is given proportional to the measured distance and the sensing weight returns to the end position whereby the measured value determined is retained until the next measurement cycle starts.

Different sensing weights enable exact level measurements independent of density or grain size of the bulk material. This signal can be visualized with easy to use and well legible indicating units that are mounted in a switch cabinet.

Product features

  • Reliable continuous level measurement up to a silo height of 42 m
  • Measurement technology unaffected from characteristics like dust, moisture, conductivity or grain size of the bulk material
  • Measurement in silos with a process temperatures up to 150 °C possible
  • No influence on the measurement process by internals in silos or vessels
  • High measurement accuracy of the actual filling level of ±2.5 cm
  • A four-line plain text display enables an easy menu-guided commissioning and local operation
  • Use in dust incendive hazard areas possible, category 1/2D
  • 4 - 20 mA current output and maximum 4 freely programmable signal outputs
  • Protection type IP 67 according EN 60529
  • Compact and still robust design with low weight
  • Special designed tape wiper avoids pollution of internal housing
  • No movement into silo outlet due to fully electronic digital minimum fail-safe mode

Further information on ATEX

Housing / Lid
Aluminum coated RAL 7001 / pure
Tape run-off speed
0,160,25 m/s
Traction power
150 N
Angle of inclination
maximum 2°
Power supply
90253 VAC, 50/60 Hz
2028 VDC
Weight
11,5 kg including sensing weight
Dimensions
300 x 260 x 225 [HxBxD]
Process connection
Flange DN100 PN16 / 4" Aluminium
Wiper
Aluminum / steel or Stainless Steel (304)
Measurement tape
Stainless Steel (301, modified)
Measurement range
0 m42 m
Power consumption
max. 150 VA w/o heater
max. 170 VA with heater
(optional)
Process pressure
-0,5+1,0 bar
Process temperature
-20 °C+150 °C
Ambient temperature
-40 °C+60 °C
Explosion approvals
ATEX II 1/2D Ex ta/tb IIIC T99°C Da/Db
Terminals
maximum 2,5 mm
Inputs
Input voltage 30 VDC
(active)
Contact load maximum 0,3 W
(passive)
Outputs
Current output 420 mA
(active)
Relay outputs maximum 250 VAC / 6A
Optocoupler output max. 30 VDC / 10 mA
(optional)
Type of protection
IP67 according EN 60529

Reliable continuous level measurement in silos, vessels and hoppers filled with dusty, powdery, granulated and grained bulk materials any kind like gravel, sand, cement, concrete, lime, gypsum, broken stones, animal feed, fishmeal, milk powder, grain, spices, salt, sugar, flour, coffee, cacao, cereals, graphite, fertilizer, zinc sulfate, aluminum oxide, polystyrene, plastic granulate, plastic powder, filler, wood pellets, wood chips, sawdust, foam flakes, ash, fly-ash, slag, carbon black, coal, coke dust and many others more.

Interface measurement and level measurement of liquids are possible as well.

Typical applications are:

  • Continious level measurement in a coal bunker of a power plant
  • Continuous level measurement in silos filled with minerals for the production of mineral plasters

LF20 Brochure

LF20 Appliance list

LF20 Appliance information

LF20 DustEx information

LF20 Operating instruction


Product Tags:

cement silo level indicator

      

electronic digital height measurement

      

level it concrete floor leveller

      
China MOLOSbob LF Yo-Yo sensing level measurement

MOLOSbob LF Yo-Yo sensing level measurement Images

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