Constant monitoring for CO2 fire suppression systems

The Permalevel Load Weigh is a counterweight fixed monitoring system for CO2 fire suppression cylinders. Each cylinder is suspended and in the event of any discharge, an alert will be triggered, ensuring the facility is constantly protected. 


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Counterweight cylinder monitoring system


The Permalevel Load Weigh is the constant weight monitoring system, mainly used for CO2 fire suppression cylinders. 

The system works on a counterweight mechanism. The cylinders are suspended from a fabricated metal structure by a threaded neck ring. Connecting rods join with the counterweight mechanism which has a specific mass with which to balance the weight of the cylinder. When the cylinder is at the correct fill weight, the counterweight arms hands perpendicular to the ground. A sketch of this setup can be found below. 

As soon as a leak begins and the agent starts to discharge, agent weight will being to drop and thus the counterweight arm will begin to fall. When the arm leaves the perpendicular, you know a leak has occured and immediate attention is required to restore the fire suppression system to full operation. 

It is a highly flexible platform and we can adapt numerous elements to suit customer needs. One of the most popular additions is to include individual cylinder alarms by fitting actuators to each counterweight arm. As soon as the cylinder drops, the actuator is triggered and can alert any external alarm system. 

Techical specifications


Body assembly  – Aluminium

Couterweight – Iron

Bolt & Collar –  Steel


Main body

150mm x 115m


Rod length

Variable depending on customer requirement 

Typically 270 mm x M8 x 1.5

Cylinder Neck ring

Variable depending on customer requirement 

Typically N4 x 014

Stainless Steel




Suspension Rack

Fabricated locally according to system design 

Remote alerts

Usually through Lovato limit switches 

ATEX models also available 

Ifrared sensors also available for entire rack monitoring 


Download Permalevel Load Weigh Brochure

For basic product information, please find below. If you have any other questions, please contact us directly.

Frequently asked questions

What materials can the Portagauge 5 test?

The portable ultrasonic thickness gauge can test any type of metal and most hard plastics. The most popular metals include steel, aluminium, copper and popular plastics include PVC, Polyethene and fibreglass to name a few!

How accurate is the Portagauge 5?

The Portauage 5 is accurate at testing true material readings (ignoring surface coatings) to within 0.01mm

How to test sprinkler pipes?

The Portaguage 5 can be used to test any sprinkler pipe or other metal piping to identify areas of corrosion, locations where there has been considerable erosion, areas of fungal deterioration and other forms of metal ware. The testing process involves carrying out a series of spot checks along the bottom of the pipe. It is on the bottom of the pipe where liquid will naturally pool and thus where you are much more likely to have areas of heavy corrosion. The user simply goes down the entire length of the sprinkler pipe and continually monitors the pipe thickness and the waveform. Both should be consistent along the full length of the pipe. As soon as the thickness or the waveform begin to deviate significantly, (and they will normally do so together) the equipment has identified an area likely to be compromised and thus further physical & visual inspections will be required.

Do I need training to use the Portagauge 5?

This equipment is incredibly easy to operate, and no dedicated training is required in order to use the unit. We provide operating instructions which is normally enough to provide an operator with confidence and the required knowledge. However, every Coltraco unit comes with free technical support for the lifetime of the equipment so if you do need any further assistance, our technical team are on hand to support

How long does it take to deliver the portable thickness gauge?

These units are almost always available ex stock from the UK. Delivery to the UK is normally next day, Europe in 2 – 3 days and most of the rest of the world in 3 – 4 days from order. Please contact our sales team for an update on availability and for any other questions.

I don’t need to ignore the paint layer. Will this still work for my needs?

The short answer is yes and normally triple echo thickness gauge technology can be used for any thickness measuring applications. We do also offer our Portagauge 3 technology however which uses single echo technology and will measure paint & material as one reading.

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