Confirm the Inert-Gas Bottle Is at Pressure, Non-Invasively
Inert-gas suppression systems, such as Inergen, nitrogen and argon, protect with pressure, not liquid level, so a Portalevel won't read them. Portagas® monitors that cylinder pressure from outside, combining acoustics with a temperature-corrected IR reading, to better than the 5% the standards demand.
Portagas®
The non-invasive pressure indicator for inert and compressed-gas fire-suppression cylinders.
Inert GasPortagas®
Confirms an inert or compressed-gas cylinder is holding pressure, without breaking into the gauge port, discharging the bottle or taking the system offline.
Key specifications ⌄
| Measures | Internal cylinder pressure (non-invasive) |
| Gases | Inergen, nitrogen (N2), oxygen (O2), argon |
| Typical range | ~100–200 bar |
| Method | Acoustic + temperature-corrected IR thermometer |
| Precision | Better than the 5% required by standards |
| Compliance | NFPA 2001 · ISO 14520 |
| Mfr. part no. / CAGE | 3107505-GAS · CAGE KD983 |
The other half of fire-system readiness
Pair Portagas® with the Portalevel® range and you can verify every fixed gaseous fire-suppression cylinder aboard: liquid agents by level, inert gases by pressure, on one routine, with one supplier.
See the Portalevel level indicators →- Machinery spaces, engine rooms and switchrooms on inert-gas protection
- Data and server spaces using Inergen or nitrogen systems
- Routine readiness checks without a service-company discharge
- Audit-ready records for class and fire-safety inspection
Checking Inert-Gas Pressure, Step by Step
No gauge break-in, no discharge: pressure verified from outside the cylinder.
Set the baseline
Record the cylinder's known charged pressure as the reference value.
Read non-invasively
The instrument senses internal pressure acoustically from outside, corrected for temperature with a built-in IR thermometer.
Compare to baseline
Any drop shows up early, before it reaches the 5–10% loss threshold cited in NFPA 2001 / ISO 14520.
Where it's used aboard
Why inert-gas cylinders need a different check
A liquefied agent, such as CO2 or NOVEC™ 1230, sits as a liquid you can read with a Portalevel®. Inert gases such as Inergen, nitrogen, oxygen and argon never liquefy; they are held by pressure alone, typically around 100–200 bar, so there is no liquid line to find and a level indicator simply won't read them. That is why these cylinders are verified by pressure instead, and exactly what the Portagas® is built for: it reads the cylinder's internal pressure non-invasively and corrects for temperature, catching a slow loss of charge long before it crosses the 5–10% threshold of NFPA 2001 and ISO 14520.
Inert-gas systems protect the spaces you can't flood
Engine rooms, switchrooms, pump rooms and data spaces are often guarded by inert-gas systems precisely because water or foam would do more harm than the fire. Portagas® confirms those cylinders are holding pressure non-invasively, with the system still armed.
Order via ShipServ & IMPA
ShipServ
SepcoTech TradeNet: TN 317545
Order the Portagas® through ShipServ. Search TN 317545 on TradeNet, or add it to your quote above. The IMPA Marine Stores Guide reference for the Portagas is confirmed at quotation.
Gas Pressure Monitoring: FAQ
Which gases can the Portagas monitor?
How does it work?
Why does this matter?
Which standards does it support?
What cylinder pressures does it handle?
Why not use a Portalevel?
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