Advanced Ultrasonic Liquid Level Indicator For Fire Cylinders

Portalevel® LITE is Coltraco Ultrasonics’ latest innovation in ultrasonic liquid level measurement, offering high-accuracy performance at an exceptional value. Building on the success of the Portalevel® Original and Portalevel® Mini, it is designed for the non-invasive measurement of fire suppression system contents.

P/N: 2290334-LITE
NSN: 6680-99-275-5292
IMPA MSG P/N: 652776

KD983 CAGE code – COLTRACO LIMITED

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Overview

Delivering Safesite® For All Budgets

Portalevel® LITE quickly and accurately determines the liquid level in a wide range of liquefied fire suppression agents, including CO2, FM200™, and NOVEC™1230. The device features a high-contrast OLED display that clearly indicates the cylinder contents phase, showing either “GAS” or “LIQUID.”

With over 30 years of experience in developing ultrasonic liquid level indicators, Coltraco Ultrasonics is a leader in this field. Portalevel® LITE uses advanced signal processing techniques to deliver liquid level accuracy to within ±1mm of the true level. Our instruments are crafted to the highest standards in the UK using premium materials, offering superior value and reliability, backed by our unique position in research and development.

Key Features

  • Optimised Rectangular Sensor: Enhanced design directs ultrasound more effectively, improving accuracy and measurement efficiency.
  • Advanced Signal Processing: New algorithms provide clearer differentiation between gas and liquid phases, ensuring precise results.
  • Faster Testing: Simplified procedure with clear GAS/LIQUID indication for quicker operation, reducing testing time.
  • Extended Battery Life: 24 hours (est.) of continuous use on standard AAA batteries, with an automatic power-saving mode after 10 minutes of inactivity

 

Advantages:

  • Portable & Versatile: Quickly measures cylinders of various sizes and types.
  • Non-invasive: No system downtime, ensuring safe and continuous operation.
  • Rapid Measurement: Provides results in under 30 seconds—significantly faster than traditional methods like weighing.
  • Long Battery Life: 24 hours of use on AAA batteries with easy replacement.
  • Clear Display: The intuitive OLED screen clearly shows the cylinder contents, whether “GAS” or “LIQUID.”
  • Lifetime Support: Coltraco Ultrasonics provides continuous technical support throughout the product’s lifecycle.

Agent Weight Calculation with Portasteele®

The combination of the Portalevel® ADVANCED and Portasteele® CALCULATOR uses our decades of experience in ultrasonic engineering and collaboration with fire suppression system manufacturers to allow a user to clearly determine the agent weight from the liquid level without having to physically weigh the cylinder. The benefits of this are:

Tracebility: The liquid level found is traceable to the agent weight which is the only documented evidence of fire suppression cylinder contents from the manufacturer

Temperature Correction: Any fluctuations in liquid level as a result of temperature changes is automatically accounted for in the calculations, giving you the true agent contents at all times regardless of temperature

 

 

All measurements are saved and recorded with time & date stamp, for effectively audit trail and to comply with relevant ISO and NFPA regulations where agent weight is required to be reported

Coltraco’s Portalevel Journey

With over 30 years of experience in developing ultrasonic liquid level indicators, Coltraco Ultrasonics is a leader in this field. Our instruments are crafted to the highest standards in the UK using premium materials, offering superior value and reliability, backed by our unique position in research and development.

What's In The Box

  Portalevel® LITE:Main Unit
  Handheld Ultrasonic Sensor:For transmitting ultrasound
  Ultrasonic Couplant:Ensure good contact between cylinder and sensor
  Infrared Thermometer:To measure cylinder surface temperature
  Operating Instructions:Provide guidance on how-to-use
  Calibration Certificate:Certify unit has been tested successfully
  Robust Carrying Case:To hold the equipment and accessories
Portalevel® LITE

Technical specifications

Technical Specification
Dimensions

120x78x27 mm (L x W x D)

Unit Weight

300g (with batteries)

Cylinder Compatibility

Works on most single-skinned cylinders, operational range may vary depending on the cylinder contents.

Typical cylinder diameter: 110mm – 406mm

Agent Types

Carbon Dioxide (CO2), Halon fire agents (Halon 1211, Halon 1301, Halon 2402), FE-13™, FE-25™, Clean Agents (Novec™ 1230, FM200™­)

Accuracy

Down to ± 1% of true liquid level

Display

1.54” 128x64 OLED

Additional Features
  • Displays cylinder phase “GAS” or “LIQUID”.
  • Can be used alongside the Portasteele® CALCULATOR (sold separately) to quickly convert the liquid level to the agent weight.
  • Comes with Infrared thermometer to allow an operator to measure the cylinder temperature at the time of measurement.
Power Supply

4x LR03 (AAA) cells for up to 24 hours of operation.

Operating Tempurature
  • Main Unit: -10°C to +65°C
  • Sensor: -10°C to +65°C
Sensor

Piezoelectric crystal sensor made from stainless steel. Connects via a 1m BNC coaxial cable.

Certifications
  • CE, UKCA
  • Coltraco is ISO 9001:2015 and ISO 14001 approved
Warranty

Main Unit: 3 years, Sensors: 1 year Lifetime customer support

See the Portalevel® LITE in action.

Frequently asked questions

The Portalevel® LITE is a handheld ultrasonic device used to quickly and easily measure the liquid levels inside fire suppression system cylinders. It provides a cost-effective solution for maintaining fire safety compliance without the need to dismantle or weigh cylinders.
The Portalevel® LITE is designed for basic, routine servicing where a simple, reliable, and affordable solution is required. While it shares the same core ultrasonic technology as more advanced models, it offers essential functionality at a lower price point, making it ideal for less frequent inspections or smaller operations.
The Portalevel® LITE can detect liquid levels in cylinders containing agents like CO₂, FM-200®, NOVEC™ 1230, FE-13™, and similar suppression systems. It is compatible with a wide range of pressurized gas cylinders commonly used in commercial, marine, and industrial fire protection.
The Portalevel® LITE offers an accuracy of ±1.5 mm, allowing reliable identification of the liquid level inside cylinders. This helps ensure fire suppression systems are maintained properly, supporting regulatory compliance and operational safety.

Related Products

Portalevel® MAX PLUS is our latest high-spec UL listed addition to our line of handheld, battery powered liquid level indicators. With Portalevel® MAX PLUS, an operator can rapidly and reliably detect the liquid level within a fire cylinder with a clear GAS / LIQUID interface, with an accuracy of ±1.5mm in under 30 seconds.

P/N: 2290334-COMXPS
NSN: 6680-99-275-5292
IMPA MSG P/N: 652776

KD983 CAGE code – COLTRACO LIMITED

The Portasteele® CALCULATOR is the perfect partner to any of Coltraco Ultrasonics’ liquid level detectors. It allows you to convert your measured liquid level to an agent weight, precisely and accurately. These readings can then be saved and exported for future reference and traceability. 

Used in partnership with the Portalevel® Ultrasonic Level Indicator range 

P/N: CALC-007

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