Portalevel® IS

Zone 1 Ultrasonic Level Indicator

The Portalevel® INTRINSICALLY SAFE is a specialist, intrinsically safe ultrasonic liquid level indicator. It is designed for non-invasively monitoring the contents of fire suppression systems in hazardous, explosive environments. This device is the ideal tool for testing cylinder contents in ATEX Zone 1 Zone 2 hazardous areas. classified areas. 

Intrinsically Safe Ultrasonic Level Indicators 

• Approved for use in Zone 1 and Zone 2, ATEX II 2 G Ex ib IIA T4 Gb and IECEx (Ex ib IIA T4 Gb) certification, the Portalevel® INTRINSICALLY SAFE can be used in even the most sensitive of environments. 
• It can be used to locate the liquid level in any liquified fire suppression system, including CO2, FM200®, NOVEC™ 1230, when such systems are installed in ATEX Zones. 

• This removes the need for a Hot Work Permit to inspect your fire suppression systems, offering significant time, cost and safety benefits compared to individually weighing your cylinders. 
• The dual certification allows for global compliance and offers the long-term benefits of safer testing practices, no downtime and confidence that the liquid levels are where they need to be
• The ATEX standards certified are: EN IEC 60079-0:2018 and IEC 60079-11:2023
• The IECEx standards certified are: IEC 60079-0:2017 and IEC 60079-11:2023

In order to meet ATEX requirements for power output, the Portalevel® INTRINSICALLY SAFE outputs a much weaker signal than our Portalevel® MAX range. To adapt to this, we developed and adapted our calibration algorithms to offer three “modes” of calibration, including an intelligent calibration mode (iCal). 

The Portalevel® INTRINSICALLY SAFE also has four different power settings, for larger or more corroded cylinders. This, in combination with the three calibration options, allows the unit to be used on a wide variety of cylinder types and agents, with minimal user input. This was critical in allowing us to maintain our high standards of accuracy (±1.5mm of the true level) and ease of use in a handheld, ATEX Zone 1 approved package.  

Designed with safety in mind, the Portalevel® INTRINSICALLY SAFE is perfect for areas where volatile or explosive gases, vapours or mists are likely to be present in the air (IECEx Zone 1), such as: 

• LNG and LPG carriers
• Oil tankers
• Offshore platforms with flammable gases
• Chemical plants
• Gas plants and facilities 

Converting Liquid Level to Weight 

Monitoring the liquid level in fire cylinders is a vital aspect of any fire suppression system maintenance schedule, however, understanding how the liquid level relates to the fill weight of the cylinder is equally important. Coltraco Ultrasonics offer, in conjunction with the Portalevel® range, the world’s first liquid level to agent mass calculator.  

The Portasteele® CALCULATOR calculates the agent weight of a fire suppression cylinder. It does this by using the liquid level determined by our Portalevel® range or inversely, by using the required fill level for a certain weight of suppression agent. The Portasteele® CALCULATOR is sold as a stand-alone unit on a 7’’ hand-held tablet to be used in conjunction with our Portalevel® range.