VEGACAL 63 Capactive Level Sensor

VEGACAL 63 Capactive level sensor measures the liquid level in a tank or storage vessel.  In many installations, capactive technology offers no measurement deadband and a very low minimal measurement distance, making the VEGACAL 63 ideally suited to small tank applications.

Capacitive level sensor measurement principal

The capacitive level probe, the liquid under measurement and the storage vessel wall form an electrical capacitor.  The capacitance is influenced by three main factors.

1. Distance between the electrode surfaces
2. Size of the electrode surfaces
3. Type of dielectric between the electrodes

The probe and the vessel wall are the capacitor plates. The measured product is the dielectric. Due to the higher dielectric constant of the product compared to air, the capacitance increases as the probe is gradually covered.  This capacitance, as well as the resistance change, are converted by the VEGACAL 63 into a level-proportional signal.

VEGACAL 63 Specifications

• Suitable for conductive and non-conductive liquids (liquids of conductivity value (DK) less than 100 µS/cm should have a a steady DK value to ensure accuracy of measurement)
• Mesurement range up to 6m
• Process Temperatures -50…+200°C
• Threaded (from 1/2″ upwards) and flanged process connection (from 1″/DN25) options
• PE and PTFE insulated versions
• 316L SS wetted parts as standard with exotic material options
• IP66+ plastic, aluminium and stainless steel electrical head options (inc. electropolished for the food and pharmaceutical industries)
• 4-20mA output with HART comms as standard.  Profibus and Foundation Fieldbus options available.
• ATEX approval (plus alternative agencies) and SIL2
• Can be used with the VEGA PLICSCOM Display Module

Fluidic hold a distributor agreement with VEGA Level Instrumentation.  Our instrumentation engineers are product trained and able to help with instrument selection within the full VEGA instrumentation portfolio including their range of level transmitters and level switch devices.  Please contact either office for more information (Glasgow 0141 641 5920 or Warrington 01925 572401).