Portalevel® MAX PLUS is our latest UL listed addition to our line of handheld, battery powered, ultrasonic liquid level indicators that, using a clear GAS / LIQUID interface, detects the liquid level within a liquefied fire suppression cylinder with an accuracy of ±1.5mm in under 30 seconds.
P/N: 2290334-COMXPS
NSN: 6680-99-275-5292
IMPA MSG P/N: 652776
CAGE Code: KD983 – COLTRACO LIMITED
Portalevel® MAX PLUS is our flagship ultrasonic liquid level indicator for liquefied fire suppression cylinders that is UL-listed.
Through precision and speed, the Portalevel® MAX PLUS allows for a much more convenient and reliable method of fire agent contents monitoring than traditional weighing and minimises risk of accidental discharge in industrial environments by ensuring a facility’s safe operation in the most efficient way as part of our Safesite® mission.
As the Portalevel® MAX PLUS is UL-listed and uses an approved non‑invasive liquid‑level measurement method, it complies with regulations such as ISO 14520 ISO 6183, NFPA 12 and NFPA 2001, meeting their requirements for verifying clean‑agent quantity during semi-annual inspections.
The combination of the Portalevel® MAX PLUS and Portasteele® CALCULATOR uses our decades of experience in ultrasonic liquid level indication and collaboration with fire suppression system manufacturers to allow a user to clearly determine the agent weight from the liquid level without having to physically weigh the cylinder. Traceability to agent weight remains the only way a user can verify liquid level height measurements as only the agent weight is printed on the cylinder label.
All measurements are saved and recorded with time & date stamp, for effective audit trail and compliance with relevant ISO and NFPA regulations where agent weight is required to be reported. Any fluctuations in liquid level because of temperature changes is automatically accounted for in the calculations.
Non-Invasive: The fire suppression system is never disconnected, and no manual weighing is required.
Reliable & Fast: Get instant results in real time from measuring numerous cylinders with an accuracy of ±1.5mm in under 30 seconds per cylinder.
Adaptable: With 3 calibration modes and 4 power settings, Portalevel® MAX PLUS can be adjusted to reliably measure different cylinder types and sizes. It can also be used to measure all core Clean Agent systems, including CO2, FM200™, NOVEC™ 1230, Halon agents, FE-13™, FE-25™, NAF S III™. However, it has been shown to be used with other liquids.
Robust: With an IP65 enclosure and backlit LCD display, the unit can be easily operated in challenging and poorly lit industrial environments.
| Dimensions | 167x82x30 mm (L x W x D) |
| Unit Weight | 300g (with batteries) |
| Accuracy | ±1.5 mm (±1/16 inch) |
| Sensor Type | 14mm diameter magnetically mounted |
| Sensor Frequency | 1 MHz |
| Sensor Connectivity | 1 m BNC coaxial cable. |
| Power Supply | 1 x PP3 9V battery |
| Battery Life | 10 hours continuous use |
| Display | 55 x 28 mm backlit LCD |
| Operating Temperatures | -10 °C to +65 °C (14 °F to 149 °F) |
| IP Rating | IP65 Rating (Enclosure) |
| Classifications & Approvals | UL Listed, RINA Classification Society Approval |
| Registrations | CE, UKAS, Coltraco is ISO 9001 and ISO 14001 registered |
| Warranty |
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The Portalevel® MAX PLUS can measure the level of various liquids. The primary application is to check the liquid level in fire suppression cylinders. These agents commonly include: CO2, FM200™, NOVEC™ 1230, Halon agents, FE-13™, FE-25™, NAF S III™ and, all core Clean Agent systems. However, the Portalevel® MAX PLUS has been shown to work on other liquids such as water, fuel, LPG and even mayonnaise in the processed food industry.
The Portalevel® MAX PLUS can identify the liquid level to ±1.5 mm of the actual liquid level. When using the Portasteele® CALCULATOR to convert the liquid level to agent weight, the results are accurate to within 1%.
CAL1—This is the standard setting to be used in most cases. It will work when the trend in readings you observe goes from high to low with a significant drop-off (see annexe for explanation). CAL2 will be used when the difference between high and low readings is excellent or if CAL 1 is insufficient. CAL3—This mode will be used when the difference between high and low readings is slight and CAL 1 or 2 is insufficient.
No, you can use any ultrasonic gel or petroleum jelly available in most pharmacies. Water will also work, but a hot environment needs regular application.
Unfortunately, above this temperature, CO2 converts into a supercritical fluid state, and your cylinder will no longer have a liquid level to measure. We recommend testing CO2 in lower temperatures. Please get in touch if you need recommendations for hot climate CO2 monitoring.
However, these agents are far more stable at higher temperatures than CO2. Although the liquid level will naturally rise with increased temperature, it is far less than with CO2 and, therefore, can still be tested.
Yes, this unit is specifically designed to work despite the presence of a siphon tube.
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