The Interface Controller is amplifying relay, Nozzle and flapper Which operates with filtered air supply or gas, YPL liquid interface controller Consist of displacer mounted to the flex tube. This flex tube is attached to a Standard flange. Mounted on the reverse side of the flange is carries assembly With adjusting screw, nozzle and relay with the orifice with cleaning device Which has been provided to clean clogged orifice. The flex tube is tube which Permits vertical motion only. The YPL flex tube shaft extension rod transmits the Displacer motion from within the shaft to the nozzle. The displacer has been Specially designed to sense liquid interface even for specific gravity difference Of 0.05 . the interface controller can also be fitted in tank & similar vessels for Controlling the desired level of the liquid.

Principle of Operation

The Interface Controller   operates on the change in buoyant force on the Displacer. This force is proportional to the volume of liquid that is displaced . Any change in the liquid level will produce the change in the position of flex tube end. This causes movement of the flex tube shaft to which flapper is connected. A booster relay has been added to the control to speed the response time which helps to Remove heavier liquid  at faster speed. The relay is enclosed in a pressure tight housing  Allowing  for the remote release of vented gases and protecting the pilot and pressure Gauges from the elements and hose spray cleaning operations.

Specification

        Operating mode : Pneumatic, on-off Direct or Reverse
Process Connection : Carbon Steel ASA flange, Process flange min. 4” std is Recommended because of limitation of displacer diameter For Interface applications.
Working Pressure : Upto 60 Kg/cm²
Temperature Limits :
  • 150°C with S.S Float and 100°C with Phenolic Float
Enclosures: Weather proof IP65
Supply Pressure : 1.4 Kg/cm²
Output : 0.2 ~ 1 Kg/cm²
Supply Connection : ¼” NPT
Output Connection :  ¼” NPT
Exhaust : Screened Vent Connection
Gas Consumption : 15 CFH(Minimum) and 35 CFH Throttle(Average)
Displacers :  i) Horizontal(stainless steel) ø76mm x 440mm long
ii) Vertical(stainless steel) ø76mm x 356mm long
iii) Vertical(Phenolic) ø90mm x 115mm long
Differential:  i) 7 ± 3mm for S.G. difference of o.1
ii) 25 ± 5mm for S.G. difference of 0.1
iii) 20 ± 5mm for S.G. difference of 0.1
S.G. Difference : : 0.05mm(Min.)

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