Ax60+

An Oxygen Monitor Won’t Keep You Safe Around CO2

This is the most common and most expensive mistake in beverage and hospitality gas safety.

The logic sounds reasonable. Carbon dioxide displaces oxygen, so an oxygen monitor should catch a CO2 leak. In practice, it doesn’t. Oxygen alarms typically sit at 19.5% and 18%. By the time a CO2 leak has pushed oxygen down that far, the carbon dioxide in the room is already at a level that will harm anyone in it.

Carbon dioxide is toxic in its own right, well before it becomes an asphyxiation risk. If you store or use CO2, you need a CO2 sensor. The Ax60+ CO2 is that sensor, reading from 0 to 5%, which is 0 to 50,000 ppm.

Build the System Around the Site

The Ax60+ is modular. A central display unit anchors the system and accepts up to four sensors, in any mix from the range.

A brewery might run two CO2 sensors in the cellar and a SAFE-OX in the nitrogen store. A laboratory might run CO2 and SAFE-OX sensors side by side. Both are the same system with different sensors.

Each sensor supports up to four alarm units, with up to eight per system. That matters, because the alarm needs to be where people are, not where the panel is. Put a strobe and sounder outside each door, and staff know before they walk in.

The Variants

The Ax60+ CO2 monitors carbon dioxide in cellars, dispense areas, laboratories and plant rooms.

The Ax60+ SAFE-OX monitors oxygen depletion and enrichment where inert gases or oxygen are stored.

The Ax60+ Cultivate is a CO2 safety sensor built for indoor growing, such as vertical farms and greenhouses.

The Ax60+ Kiosk is a standalone CO2 monitor and alarm for small areas, with no central display needed.

The Ax60+ CO monitors low levels of carbon monoxide, from 0 to 25 ppm, in ambient air or low pressure air lines, including helium and nitrogen background applications.

The Data Output Module (DOM) adds four 4-20 mA analogue outputs and Modbus RTU, for building management system integration.

The central display unit is needed for all builds, except the Kiosk.

Oxygen Depletion and Enrichment in One Sensor

The SAFE-OX reads 0 to 25% oxygen, with an accuracy of ±0.75%, and alarms in both directions. Low oxygen is the asphyxiation risk. High oxygen is a fire risk, and it’s the one people forget. Three alarms are configurable, set by default at 19.5% (low), 23% (high) and 18% (low low).

It uses a lead free electrochemical sensor with a 30 second warm up, and stays accurate around helium, nitrogen and argon as standard. That matters in laboratories and MRI suites, where helium can confuse many oxygen sensors.

The SAFE-OX replaces the older Ax60+ O2 sensor.

Automatic Response, Not Just an Alarm

Two configurable relays are built into the central display unit, rated 250 VAC or 30 VDC at 3 A.

Wire them to extraction, and a leak triggers ventilation without anyone there. Add the optional solenoid valve, and the system can shut the gas supply off at the source. For a cellar that’s unattended most of the day, that’s the difference between a leak and an incident.

Alarms latch by default, so a brief excursion can’t clear itself unnoticed. Latching can be switched off where it isn’t wanted.

Calibration You Can Do Yourself

Sensor calibration runs from the central display’s technical menu, with zero and span both adjustable on site. That takes a recurring service cost out of the system. If you’d rather, we can handle calibration under a service agreement, and supply certified calibration gas either way.

Warm up is 40 seconds from power on, and the CO2 sensor responds in under 30 seconds (T90).

Mounting Matters

Gas density decides sensor height, and getting it wrong makes the system close to useless.

Carbon dioxide is heavier than air, so CO2 and Cultivate sensors mount about 300 to 450 mm above the floor, where the gas will pool. SAFE-OX and CO sensors mount at average head height, where people breathe.

Sensor and alarm units are rated IP55, and the central display unit IP54. All are water resistant rather than waterproof, so none should sit outdoors without protection or in direct sun.

Working With Existing Ax60 Systems

If you already run the older Ax60, there’s partial compatibility. Ax60+ CO2 sensors work with both Ax60 and Ax60+ central displays. Older Ax60 sensors only work with Ax60 central displays. Oxygen sensors need an Ax60+ central display.

That makes a staged upgrade possible. Replace the panel first, and your existing Ax60+ CO2 sensors carry over.

Where It’s Used

Breweries, wineries and cider makers, pubs, restaurants and fast food dispense areas, beverage cellars and gas stores, laboratories and cryogenic storage, hospitals and medical gas areas, plant rooms, and indoor horticulture and controlled atmosphere storage.