VIKING EMEA and Coltraco Ultrasonics partner on a custom ultrasonic liquid level indicator
Coltraco and Viking EMEA are delighted to provide the firefighting market with the first FM approved Non invasive Ultrasonic Liquid Level Indicator
Portagas® is a world’s first technology for non-invasive, non-destructive monitoring of pressurised, inert gas systems.
It is a unique and innovative solution designed to monitor the pressure of pressurized, non-liquefied inert gases and compressed gas cylinders, including Inergen®, Nitrogen, Oxygen and Argon.
Utilizing sophisticated signal processing and acoustic technology to detect even minor fluctuations in internal cylinder pressure, with precision below the 5% required by regulations, making it a valuable tool for ensuring safety and compliance.
P/N: 3107505-GAS
CAGE Code: KD983 – COLTRACO LIMITED





Portagas® is a unique and innovative contents monitoring solution for pressurised, non-liquified inert gas cylinders. Through a combination of sophisticated signal processing and data-driven, empirically verified algorithms, Portagas® utilises acoustic technology.
Pressure alone is not sufficient to fully understand the status of a cylinders’ contents; the pressure of a sealed container is directly related to its temperature. This means that, unless properly adjusted for changing temperatures, a change in pressure does not necessarily mean that the cylinder is leaking. Conventional pressure gauges typically address this by indicating a range of acceptable pressures based on different temperatures. This is a useful indication; however, these ranges are typically quite broad and relies on the personnel conducting the checks to properly account for the temperature.
The Portagas® tackles this issue head on, with an infra-red thermometer built into the sensor that will take a current temperature measurement at the point of testing. This temperature is then used, along with fill pressure and fill temperature, to determine precisely what the pressure should be at the current temperature. We use the most accurate models available for pressurised gases in making these adjustments, accounting for the intrinsic forces and characteristics of the contained gas.
This temperature-adjusted pressure is then compared with the pressure determined acoustically by the Portagas®, allowing it to intelligently and automatically determine whether an observed change in pressure is due to changing temperatures or a loss of contents, all with the tap of a finger.
Portagas® also allows you to effortlessly keep track of your maintenance. Each test you conduct can be saved to the device along with a date and time. The full record of all the tests conducted can then be viewed and filtered by date and site on the device, or you may choose to export the data via email or USB. This data can be exported as either a simple CSV file, for integration into existing records, or in an automatically generated PDF report.
Types of gases: Inergen®, Nitrogen, Oxygen and Argon.
List of applications:
Inergen™ is typically stored in seamless cylinders at pressures between 100-200 Bar. At such pressures they are subject to slow seepage of contents or occasionally accidental discharge. If the gas is insufficient to develop the design concentration required the fire event will not be extinguished. This is used to detect even minor changes in the internal pressure, with precision comfortably exceeding the 5-10% agent and pressure loss thresholds cited in regulations such as NFPA 2001 and ISO 14520.

Technical Specification | |
|---|---|
| Dimensions |
|
| Weight |
|
| Display |
|
| Power Supply |
|
| Reporting |
|
| Connectivity | Wi-Fi |
| Sensor Dimensions |
|
| Sensor Weight |
|
| Sensor Power Supply | Sensor powered by the USB port on the tablet |
| Sensor Sampling frequency | 32kHz |
| Sensor Thermometer | Infrared thermometer |
| Sensor Connectivity | Micro-USB |
| Sensor Cable | 1m Micro-USB -> Micro-USB (different lengths available on request) |
| Sensor Operating temperature | -10 °C to +40 °C / 14 F to 104 F |
| Sensor Warranty | 1 year |
The most accurate and fast acting constants loss monitoring system of its kind. Capable of detecting a loss of agent mass to within 1% in Inert gas, CO2 and Clean Agent systems, and in addition to weigh loss, will provide accurate percentage pressure loss of Inert gas systems associated with agent contents leakage.
The PermaMass® FEATHERWEIGHT is only manufactured to bespoke requirements.
P/N: 2594650-FW
CAGE Code: KD983 – 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
CAGE Code: KD983 – COLTRACO LIMITED
Our News
The latest news, technologies, and resources from our team.
Coltraco and Viking EMEA are delighted to provide the firefighting market with the first FM approved Non invasive Ultrasonic Liquid Level Indicator

Coltraco Ultrasonics’ Daniel Dobrowolski accepting the 2025 Wates GFS Sustainable Technology Award. We are proud to announce that Coltraco Ultrasonics has been named a winner

As industries demand ever-higher standards of safety, compliance, and efficiency, it is important to determine which ultrasonic leak detector will lead the market in 2025.