Using ppO2 sensors, the Safe-Ox+ is an ambient oxygen (O2) monitor designed to protect the lives of those working in an environment where enriched oxygen (O2) and/or inert gases including argon (Ar), helium (He), nitrogen (N2) and liquid nitrogen (LN2) are present.

SAFE-OX+ Alarm Repeater & Oxygen Monitor
SAFE-OX+ Alarm Repeater Dimensions
SAFE-OX+ Oxygen Monitor
SAFE-OX+ Alarm Repeater & Oxygen Monitor
SAFE-OX+ Alarm Repeater Dimensions
SAFE-OX+ Oxygen Monitor


When enriched oxygen (O2) leaks, it poses a number of risks including fire, explosion and a condition on the human body called hyperoxia which can cause the central nervous system to shut down.

When an inert gas leaks it displaces the oxygen (O2) also posing a risk to life. Even a very small reduction in oxygen (O2) can cause effects on the human body such as headaches, confusion and shortness of breath.

Normal atmosphere contains 20.9% oxygen (O2) and levels should be maintained in any area around this level.

Using an oxygen (O2) monitor, like the Safe-Ox+, is the best way to protect people and your site in these potentially hazardous environments. The Safe-Ox+ also ensures adherence to exposure limit legislation such as OSHA and EH40.

The Safe-Ox+ is an oxygen (O2) enrichment and depletion monitor designed to protect the lives of those working in and around gases such as oxygen (O2), nitrogen (N2) and helium (He).

This fixed system can be wall mounted within minutes. It consists of a main sensor unit which is mounted in the room with the danger gas. A remote repeater alarm is installed at the entrance to the area so you know if it is safe to enter or not.

Both parts of the system offer audible and visual alarms and the main unit continuously displays the ambient oxygen (O2) levels for the area.

The Safe-Ox+ boasts a very long life sensor and requires very little servicing and maintenance.

Unlike most other oxygen (O2) sensors, the Safe-Ox+ can be used in a helium (He) environment. Analox utilizes special technology to ensure that your unit is reliable and accurate even with helium present.

Wall mounted main unit, with alarm repeater.

Key features include:

  • Long-life oxygen (O2) sensor
  • O2 Range: 0.1 to 25%
  • IP65 for central unit and alarm repeater
  • Minimal maintenance for users
  • User changeable sensor
  • Calibration adjustment of the Safe-Ox+ can be completed using ‘pure air’
  • Remote alarm repeater included
  • Plug-in & Go install in minutes
  • Not cross sensitive to He

Optional Extras include:

  • 1 or 2 relays
  • 4-20mA output
  • Additional repeaters (for areas with multiple entrances)
  • Cable extension kits

The Safe-Ox+ oxygen (O2) enrichment and depletion monitor is ideal for use in applications such as:

  • HBOT (hyperbaric oxygen therapy)
  • Commercial and Military diving (Heliox)
  • Cryogenics and cryopreservation
  • GC (Gas Chromatography) & Mass Spectrometry
  • Hospitals (ER, ICU, COVID Wards and A&E)
  • Beer dispense & Nitro cocktail bars
  • CAS (Controlled Atmosphere Storage)
  • MAP (Modified Atmosphere Packaging) & Food storage
  • Laboratories
  • IVF and medical clinics
  • Gas Manufacturing and blending
  • Aquaculture
  • Nuclear power plants
  • Restaurants

Oxygen (O2) enrichment

Analox can offer a wide range of support from helping you select the right features for your application, to service and maintenance advice as well as product training packages which can be tailored to your exact needs.

We also have a 24/7/365 emergency support helpline available to all customers.

Call us today to discuss your needs.

Standards such as OSHA, EH40, Confined Space Act and IMCA D023/D037 advise on permissible limits for oxygen levels.

Analox are committed to helping you achieve your local and application specific legislation, please call us to discuss your requirements.


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