TGD-L™ - Tank Gauging Device (Level)

TGD-L™ level sensor is a non-contact level gauge, that has been developed for measuring level of liquids, slurries and sludge including solvents, acids and caustics, waste chemicals, oils, liquefied natural gas, liquefied petroleum gas, food products and most water-based solutions. 

TGD-L™ uses patented principle of Guided Low Frequency GLF™ wave propagation, which allows equally precise accuracy of measurement along tank height in any shape of tank and at nearly any conditions in the tank. The principle of operation of TGD-L™ is based on emission of impulse acoustic signal to the liquid surface and receiving the signal reflected from the surface. The level in the tank is calculated based on measured signal transit time to the surface of the liquid and back. The level in the tank is measured by using a number of reference reflectors, located along the height of the tank.

To avoid negative influence of other acoustic signal reflectors in the tank, the acoustic signal is guided in a “channel” - often a pipe going all the way down to the tank bottom. Reference points are located along the pipe.

TDG-L™ Features and Advantages:

  • Non-contact level gauge with accuracy of 2 mm
  • Automatic self-calibration
  • HART® 2-wire connection
  • Less cabling – only 2 wires
  • Compact unit
  • Customized variations
  • Easy maintenance
Novagraf A/S