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Magnetic Level Indicator
Interface Level Controllers (Model: ILC-19)
Interface Level Controllers
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INTERFACE LEVEL CONTROLLERS Working Principle
 
Like most of the level instruments, Liquid interface controller also works on the buoyancy principle. The force applied by the float/displacer is proportional to the volume of liquid displaced. Change in the liquid level causes a change in the position of flex tube end. This causes movement of the flex tube shaft and aflapper is connected to the shaft. A booster relay placed to control the speed and response time helps to remove heavier liquid (Water at a fast speed. The relay is enclosed in a pressure light housing that allows remole release of vented gases and also protects the pilot and pressure gauges from the field disturbances and during cleaning. It operates pneumatically in direct as well as reverse direction. Reverse action can be obtained by rotating the nozzle assembly by 180°.
 
INTERFACE LEVEL CONTROLLERS Introduction
 
The Interface Level Controller consists of a nozzle, flapper and an amplifying relay which operate on dry air supply or gas. It also has a displacer mounted to the flex tube which is attached to a standard flange. A carrier assembly is mounted on the reverse side of the flange with adjusting screw, nozzle and relay with an orifice. A cleaning device is also provided to clean clogged orifice. The flex tube permits vertical motion only and transmits the displacer motion from within the shaft to the nozzle. The displacer is speciallt designed to sence Specific Gravity difference of even 0.05.
 
INTERFACE LEVEL CONTROLLERS Specifications
Connection 4" NB CS, ASTMA 105 Flange as standard in 150 #, 300 #, 600 #
Enclosure Die-Cast Alluminium, weather proof to IP 65
Displacer Options Vertical (Stainless Steel) 76mm OD x 355mm length
  Vertical (PP) 90mm OD x 115mm length
  Horizontal (Stainless Steel) 76mm OD x 440mm length
Differential Vertical (SS float): 25 ± 5mm S.G. difference of 0.1
  Vertical (PP float): 20 ± 5mm S.G. difference of 0.1
  Horizontal (SS float): 7 ± 3mm for S.G. difference of 0.1
Inlet & Outlet connection ¼ " NPT
Exhaust Screwed vent connection
Max Working Pressure 60 Bar / 60 Kg / cm2
Temperature 150 Deg C with Stainless Steel Float & 100 Deg with Phenolic Float
Operating Pressure 1.4 kg/cm2, 3 kg / cm2, higher on request
Mode of Operation Pneumatic, On-off Direct or Reverse
Consumption of Air 15 CFH (min) to 35 CFH
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