Permalevel® FEATHERWEIGHT Gas Weight Constant Monitoring of Fixed Fire Suppression Systems is the world’s first such system with 3 gas-group capability.

Gas Weight Constant Monitoring System
P/N: 2594650-PMLFW

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Brand new technology released JANUARY 2021

World’s first dedicated three-gas system to continually monitor loss of agent quantity due to leakage in high-pressure seamless CO2 cylinders, liquefied clean agents (NOVEC™1230, FM-200® with Nitrogen) and non-liquefied clean agents (Inert gases e.g.Inergen™).

Improve Your Fire Safety

Permalevel FEATHERWEIGHT benefits Permalevel FEATHERWEIGHT USPs

Permalevel® FEATHERWEIGHT electronics enable multi-relay power and communications up to four electronic units, each controlling 12-cylinders, totalling 48-cylinder monitoring capability from 1 power source.

Permalevel® FEATHERWEIGHT is designed for total flood fire suppression systems in seamless cylinders

Coltraco brings you the innovative answer to the question of monitoring fire systems.

Merging fundamental mathematics with cutting edge engineering, to continuously monitor the mass of your cylinder contents. This is a critical way of measuring agent loss and is the only method that is not affected by pressure or temperature.

3-gas Solution: CO2, Clean Agents, Inert

Choose Permalevel® FEATHERWEIGHT for CO2, liquefied and non-liquefied clean agents.

For non-liquefied clean agents where pressure is used as a direct indication of agent quantity, our system converts the cylinder’s fill pressure to agent mass.

The user does not have to worry about temperature fluctuations during maintenance schedules. This is because agent mass is independent of temperature, with the ability to set pressure-equivalent leak alarm thresholds, allowing you to adhere to ISO and NFPA regulatory requirements more easily.

Permalevel Featherweight cylinder details screen Permalevel Featherweight status screen


NUMBER OF COMPONENTS: Standard kit ~16 (1 x neck ring, 2x studding bars, 2x bolts, 2x locking plates, 8x hex nuts, 2x connector nuts)


Self-extinguishing Blend PC/ABS

Operating Voltage


Frequency Range


Operating Temperature

-20C ~ +50C

Operating Humidity

20 ~ 90% RH non-considering


4.3 inch TFT/Transmissive, no module

Number of cylinders


Power Relay Potential


Mounting Options

DIN (EN 60715) rail


100 grams (1% or less of agent weight above 10kg)

Connectivity Options

Monitored Input (for external fire panel integration) on the communications model.


700 grams


213 x 89 x 53.3 mm (L x H x W)


115 ~ 264VAC 120 ~ 370VDC

IP Rating

IP 54 Max

Kitting Weight

3.2-3.6 kg (including load cell)

Standard Collar Internal Thread

W80x1/11 grade, Internal Diameter: 78 mm
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    How to monitor fire systems?

    Constantly monitor cylinders 24/7 to ensure they are at designed capacity. We also provide real-time information on the exact amount of agent in your cylinder.

    How do you see the results?

    Immediate notice of leakage on a full-colour 4.3” display. The system will show the exact amount of agent loss, including percentage loss with 100-gram accuracy.

    How to comply with fire safety regulations?

    Pre-programmed thresholds based on regulatory needs: 10% for CO2 and 5% for Clean Agents, for Inergen™, you will also be given the pressure loss which is intrinsically linked to mass.