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Capacitance Type Level Indicator
 

Capacitance Type Level Indicator
Capacitance type level measurement are based on the physical properties of a capacitor. Capacitance of a capacitor formed by two parallel plate electrodes is

1. Directly proportional to area "A" of the electrode.
2. Inversely proportional to distance 'd' between the plates &
3. Directly proportional to die-electric ' ' positioned in between them.
C = A / d
The probe of the level sensor forms an electrical capacitor with the surrounding metal container wall when the vessel empty; an initial capacitance exists between the electrode level sensor & the metal wall. When the sensor is covered with liquid the value of this capacitor increases and the capacitance change is measured and converted into an output signal proportional to the capacitance change.

Depending on the application is requirement, a part or fully insulated flexible or solid rod probe is selected. The probe head contains the electric capacitance and current transducer.

The System consists of 2 units

* Indicator     :- Mounted where Indication is require.
* Prob Unit .  :- Mounted on top of the tank.

These are used for conductive and non - conductive liquids.

Conductive liquids:-
Water, Effluent, Milk, Beer, Acids and Alkalis etc.

Non-Conductive Liquids :-
Edible Oil, Turbine Oil, Synthetic Oil, Kerosene, Diesel etc.


TECHNICAL SPECIFICATIONS
  PROB
 Enclosure
:
  Die cast Aluminium LM-6 alloy duly certified for flameproof  by CMRS Dhanbad for Gas Group IIA & IIB of IS : 2148
 Cable
:
  3/4" NPT (F) / 1/2" ET
 Transmitter Type
:

  Two Wire
 Input Power
:
  24 VDC (from the indicator)
 Output
:
  4-20 mA @ constant current max.
 load of 500 ohms.
 Temperature Rating

:

 

  -20 to 1000 C
 Pressure
:
  6 kg / cm2
 Measuring Rang
:
 4000 mm
     
 Indicator / Controller
 Input Signal
:
  4-20 mA from transducer
 Display
:
  4 digit LED
 Accuracy
:
  1% of full scale.
 Relay Contacts
:
  1 Changeover per set point @ 5A230 VAC. Max. four relays  can be provided.
 Enclosure
:
  96 x 96 x180 mm (Standard)
 Optional
:
  Flameproof enclosure will be provided.
 Power
:
  230 VAC 50 Hz.
     
  MODEL CODE
 SC - CI - 70
 
   Only transmitter
   Transmitter Indicator
   Transmitter And Indicator With Controller
   Flameproof Transmitter
   Flameproof indicator With Controller  
 

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 Thermo Wells

R. No. 1A, Vilas Co-Hsg. Society, Sant Tukaram Path,
Kopri, Thane (E) 400603,Maharashtra, India
Ph. : (O) 022-25328223 / 25328224
Telefax : 91-22-25324845
Email : info@spinkcontrolsindia.com
Website : www.spinkcontrols.com
 
 

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