Quality Gas Monitoring Systems for a Global Market Since 1980

0800 772 0894

We Protect People From Life Threatening Toxic & Asphyxiating Gases


For 4 decades OX-AN® has supplied and maintained oxygen depletion, oxygen enrichment and carbon dioxide enrichment gas monitoring systems in hospitals, research centres and Universities in the United Kingdom and the Middle East.

In these organisations our equipment can protect personnel from life threatening situations from toxic and asphyxiating gases where the following may be used.

Oxygen Enrichment Systems for bedside monitoring in High Dependency and Intensive Care Wards

Oxygen Depletion Systems for MRI Scanner rooms

Oxygen Depletion and Carbon Dioxide Enrichment Systems for Research Laboratories

Oxygen Depletion Systems for Liquid Nitrogen storage and use in Cryo-Vessels and Dewar’s

Versatile Engineered Gas Detection Solutions

Our systems are engineered solutions, enabling us to manufacture either a simple up to 16 channel gas monitoring system with warning devices and sensors controlled from one main control panel through to a fully zoned up to 48 sensors with connection to the BMS and an interactive mimic diagram with LED indication in each room or area where it is safe, green LED’s and flashing red flashing LED.’s

Unique High Visibility Traffic Light Indicators
Unique High Visibility Traffic Light Indicators

RED LEDs - Evacuate immediately via the safest route

AMBER LEDs - First warning level, inform the site supervisor

GREEN LEDs - Safe environment, no action required

Unique Event & System Setting Print Facility
Unique Event & System Setting Print Facility

HOLD OFF - Allows engineer to set a brief hold off period

MUTE - Sounders muted for 5minutes after an alarm then reset

EVENT PRINTER - Record alarm levels when staff are absent

Zoned System Benefits
Zoned System Benefits


OX-AN® systems can monitor from 2 to 16 zones. During a hazardous incident, there's no need to evacuate unaffected zones and they cut out the need for one main control panel at each room or set of rooms, reducing cost considerably.

Trusted UK & Overseas Project Partner
Trusted UK & Overseas Project Partner

From the University of Manchester to BAE Systems to Guy's Hospital, London to the Princess Nora University in Saudi Arabia, OX-AN® Oxygen Depletion and Gas Monitoring systems are providing trouble free, essential life safety monitoring.

Considerable Installed Cost Savings

OX-AN® systems cut out the need for one main control panel at each room or set of rooms, reducing cost considerably.

Easy To Use & Understand

The key features of all our systems are the ease of use and understanding the systems.

The traffic light system, which we believe is unique to our control panel, gives very clear indication to building occupants the status of the gas levels in the room(s) it is designed to protect personnel.

When all is safe the Green set of LED’s are illuminated, this can be observed as a risk assessment every time one is entering the area.

Should gas levels, whether oxygen depletion or perhaps carbon dioxide enrichment reach the first non latching amber warning level, the set of Amber LED’s will illuminate whilst the sensors are monitoring this condition. If the levels drop below the pre-set warning level the lights will go off and no further action is required.

On the occasion when the gas levels reach the main red warning pre-set alarm level, the Red LED’s will illuminate, and the system will activate the room warning devices.

The warning devices have an integral sounder and this can be muted from the main panel, an external reset button allows the user to reset the system, if the system cannot be reset the client should have procedures in place to deal with this.

Third Party Compliant

Our systems meet BSRIA Section W55 oxygen depletion monitoring specification, quite simply BSRIA Bracknell chose our system as there was not a definitive standard for this growing application.

And OX-AN® systems can connect to Building Management Systems to control ventilation or a direct connection can be made to the ventilation control system. We have many applications in LN2 stores and activates the ventilation is essential in clearing oxygen depletion.

If you are an engineer, architect or specifier we can forward the relevant section in MS Word format for embedding in your project tender file.

For more information or a quotation call 0800 7720894 or click this link to send us an email sales@ox-an.com

Some OX-AN® Projects

King Abdullah University - Saudi Arabia

Addenbrooke’s Hospital - Cambridgeshire

Rothamsted Research - Hertfordshire

Guy’s & St Thomas Hospital - London


Princess Nora University - Riyadh

New York University - Abu Dhabi

Sir Peter Mansfield MRI Centre - Nottingham

Astbury BioStructure Lab - Leeds University


KAUST Dow Middle East Innovation Centre

Great Ormond Street Children's Hospital

Anthony Nolan Cell Therapy Centre

Heart Science Institute - Harefield Hospital