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Capacitance Type Level Transmitter

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Introduction

MODEL : SC / L - 700

Spink Controls' ELTRAN – a new-generation capacitance-type level transmitter designed for accurate measurement of a wide range of liquids. These transmitters operate on the fundamental principle of capacitance, where the sensor is selected based on the conductivity and properties of the liquid. Working Principle: It comprises an electronic module and a probe. The probe includes sensing and grounding electrodes (a reference electrode is used if the tank is non-metallic). It is installed at the top of the tank. The sensing electrode and the tank wall (or reference electrode) form a variable capacitor, with the process material acting as the dielectric medium. As the material level changes, the capacitance also changes, given by:

Technical Specification :

Where:

  • C = Capacitance
  • ε = Permittivity of the material
  • A = Area of the electrodes
  • d = Distance between electrodes

This change is detected by the electronic module and converted into a corresponding mA output.

Capacitance Type Level Transmitter
Engineering Specification
  • Transmitter Type : Loop Powered
  • Supply Voltage : 12 To 24 V Dc
  • Out Put : 4-20Ma (At Constant Load = 500 O)
  • Pressure Rating : 6 Kg/Cm²
  • Temperature Range : -20 To 100°C
  • Resolution : 2Mm
  • Accuracy : ± 0.25% Fsr
  • Response Time : < 2 Seconds
  • Permissible Load : 600 O @ 24 Vdc
  • Cable Entry : 3/4” Et
  • Enclosure : Flameproof Weatherproof Die-Cast
  • Aluminium : Ex Db Iia Iib T6 Gb Ip 67 & Ip 68
  • Display : 4-Digit, 7-Segment Led
  • Optional : Feature Heat Sink For Temperatures Above 100°C, Remote Indicator
Model Selection Based On Application
Capacitance Type Level Transmitter
Flexible Type ELTRAN
(SC/L-701)		 Rugged type ELTRAN
(SC/L-702)		 ELTRAN with Reference Probe
(SC/L-703F & SC/L-703R)
Simplest model with range 1500 mm to 15000 mm for conductive liquids in conductive tanks. Strong and durable model for harsh environments with level range upto 2000 mm. Designed to provide stable grounding and accurate readings for non-conductive liquids (e.g., fuels) or non-conductive tanks (e.g., plastic, FRP)

Available in both:
  • Flexible Type (SC/L-703F)
  • Rugged Type (SC/L-703R)
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