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Level sensors

Home > Products > Visualization, positioning and level control > Level sensors > SL.-SL.ATEX
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SL.-SL.ATEX

Level controls propeller for solids
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SL.-SL.ATEX

Level controls propeller for solids


The SL level controls are employed for the level control in tanks that contain powders or granulars. The indicator’s working is very simple: a synchronous motor that rotates at low speed activates a propeller placed inside the tank to be controlled. In lack of material the motor is under voltage and the propeller revolves. The presence of material round the propeller bridles the rotation provoking control contacts exchange. Electric circuit opening and closing causes the command of an acoustic or visual signal, or the silo’s load, the conveyors and worm conveyors stop etc.
Versions:
• SL- for the control of the level of powders or granulars, in general;
• SL-ATEX for the level control of materials in thanks which, inside (process zone 20) or outside (environment zone 21) a potentially explosive atmosphere, like dust cloud, can be present.
➤ SL - SL-ATEX 24VCC/S with inverter board, uses a synchronous AC motor (brushless) driven by an electronic board, integrated in the housing, which converts the tension from DC to AC. The use of a brushless motor solves the typical problem of DC motors which have a limited lifetime due to the wear on the brushes.
General features:
• Aluminium casting instrument. 
• Protecion degree IP65.
• The steel shaft is mounted on hermetic seal ball bearings. 
• Plastic propeller (standard), aluminium or steel.
• Threaded hub 1”1/2 inch gas. 
• Shaft with propeller is 15, 30, 50 cm long: the part that works inside the tank. 
• ATEX type, to use where an atmosphere potentially explosive can be present. 

Photogallery

 

                 

 

1. Earth outside terminal
2. Hub in stainless steel 1" 1/2" gas
3. 
Shaft
4. 
Propeller
5. 
Presscables

MOUNTING

The instrument is mounted on the external wall of the tank, on the side or on the top through the threaded hub 1”1/2 Gas. The material should be free to move round the propeller, that should be not fouled by the material direct jet: so arrange baffles on the indicator when weight on propeller is high (high specific weight material or subject to move in block ones).

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SIGHT OF THE TERMINAL BOARD

1. Adjustment screw of the spring strenght 


EMC 2014/30/UE
Absorbtion 3 VA
Case aluminium (waterproof)
Electrical contacts 4A 250Vac - 2A 250Vdc
EX-Mark DNV-MUNO 0496 ATEX 07/3316 CE 2460 II1/2 D Ex ta IIIC T95°C IP65 -15°C < Ta < +60°C
Low tension - LVD 2014/35/UE
Mark for 24VDC/S with inverter CE 2460 II1/2 D Ex ta IIIC T100°C IP65 -15°C < Ta < +60°C
Power supply 24 - 115 - 230 Vca ±10% 50/60Hz 24Vdc ±10%
Propeller material plastic
Protection degree IP65
Shaft length 15-30-50 cm
Shaft material stainless steel
Working temperature -10° +60°C

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SL.-SL.ATEX FR  ES 
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SL_ATEX_R8-R11_ing.pdf.pdf
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  • Description
  • Overall dimensions
  • Mounting position
  • Technical Characteristics
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Tel. : +39 0521.672341

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