Portable ultrasonic tank level indicator can detect liquid levels from side walls of tanks with diameter 0.5 – 15 meters. It works on a wide variety of tank wall materials, wall thicknesses and liquid types with no installation requirements.



A handheld tool to accurately identify the level of contents in large containers between 0.5-15 meter diameter.

  • Portable and a fully non-invasive instrument to locate liquid level through the side wall of tanks (no drilling or tank opening is required) capable of working on tanks of width as small as 0.5 meters to as wide as 15 meters in diameter
  • Ideal instrument to locate liquid levels in tanks which do not have existing methods of locating the liquid level
  • A highly accurate replacement to traditional level gauges such as sight glasses or float level gauges without needing to make any changes to the tank
  • A complementary instrument to tanks with built-in fixed level indicators in order to periodically verify the accuracy of their measurements
  • Suitable “interim” instrument for detecting liquid level in tanks undergoing maintenance or re-fitting of their built-in level gauges
  • Supplementary oscilloscope provided with each device for calibrating the sensor to each tank being tested to achieve maximum accuracy and to assist diagnostics if an issue occurs


Typical Applications

  • Water Treatment Facilities
  • Fire Safety Engineering
  • Oil & Gas
  • Chemicals
  • Process Industries
  • Transformer Oil Levels
  • Food and Drink Processing
  • Pharmaceuticals
  • Petrochemicals
  • Breweries

Sample Case Study

A Power Station in the USA using Portatank® to test Transformer Oil Levels (below)

Portatank® Portatank®


The Portatank® is accurate to +/- 10mm, with clear LIQUID / NO LIQUID result (presence/absence), providing a safe, quick and accurate method to monitor contents. This adaptable technology can work with liquid levels that fluctuate over time, and test a wide range of tanks and liquids. Coltraco’s equipment is designed to improve safety and best practice, ensuring the equipment used to inspect tanks is efficient and accurate.


  • Single LED light indication – for a clear YES / NO indication of liquid
  • Works on virtually all liquids and oils
  • Works on a wide range of wall thicknesses from 0.5mm – 20mm
  • Accuracy of +/- 5mm or +/- 10mm depending on sensor type, more accurate than conventional sight glass or float level gauges
  • Ultrasonic pulse-echo principle which is highly reliable and only requires a narrow section of the tank (25mm wide) to be free of internal obstruction for measurement to be made successfully


  • No system downtime required to perform measurement
  • This is a portable instrument which allows one instrument to be used across multiple tanks on the same site
  • No installation costs and additional manpower needed for operating the instrument
  • Only one individual is required to operate the instrument

Part of the Level-Flow-Pressure Range

See the other 3 products in this range:

  • Portasonic® 2.FL0 – handheld clamp-on ultrasonic flow meter
  • Portasonic® CALCULATOR – convert flow rate into pressure
  • Permaflow® – fixed clamp-on ultrasonic flow meter and heat meter with constant monitoring


Get in touch to solve your liquid level identification now

  • use the enquiry form
  • request the free brochure
  • further contact details on the Contact Us page:


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