Benefit from the protection of the fully featured O2NE+ Oxygen Level Monitor and Alarm unit complete with a 7 year sensor life.

The use of inert and speciality gases is common in many medical applications including.

  • MRI rooms (Helium is used as a coolant for a superconductors in MRI machines)
  • Cryopreservation (LN2 used for blood, sperm and egg preservation)
  • Tissue preservation
  • Deep freeze – pathology
  • Breathing observation – Asthma, Emphysema (Helium)
  • Cancer treatment (Argon lasers)

Should there be a leak or build-up of these gases, which are both colourless and odourless, in a confined space this will deplete the level of oxygen and can pose a danger to employees and visitors your workplace.

The O2NE+ provides two audio visual alarms which are pre-set at 19.5% & 18% (but can be adjusted) to warn personnel of a potential leak which may cause the O2 levels to deplete to a dangerous level.

The O2NE+ main senor unit is wall mounted at normal working head height in the area/s recommended as a result of risk assessment. The repeater unit/s are then sited at the entrance/s to the area to let staff or visitors know if it is safe to enter or not.

  • Simple calibration - The O2NE+ can be calibrated on "pure air" which is easy to source and ship globally and affordable.
  • Long sensor life - O2 sensor will last 7 years.
  • Minimal maintenance - Unlike other oxygen monitors the O2NE+ only needs calibrating every 18 months and the sensor does not need changing every 2 years.
  • "Plug and play" - The O2NE+ is easily wall-mounted and basic installation does not require a qualified electrician.
  • Repeater included - The O2NE+ comes complete a repeater which is to be placed at the entrance to provide and early warning before entering the room.
  • Suitable for use with helium - The presence of helium can affect the readings of most O2 monitors but the O2NE+ will provide accurate, reliable readings if helium is one of the  gases you are concerned about.
  • No risk of accidental calibration - The O2NE+ does not allow the user to calibrate it using ambient air.  A certified calibration gas must be passed over the sensor at 18 month periods.  This is a safety feature which prevents a potentially false calibration being made.

Sensor Specifications

Measurement Technique O2 – partial pressure electrochemical cell with atmospheric pressure compensation
Range O2: 0.1 to 25.0 %

Better than ± 0.75 % O2, over 5.0 to 25.0 % O2

Better than ± 1.00 % O2, over 0.1 to 5.0 % O2

Response Time O2 - 60 seconds
Warmup Time 30 seconds
Expected Sensor Life 7 years
Sensor Warranty 2 years
Sensor Calibration Period 1.5 years

Analyser Specifications

Analyser Type Fixed
Supply Voltage 230V AC
Operating Temp 0 to 40 °C Power consumption: < 5 Watts
Display 4 digit LCD

Analyser 175 x 110 x 75mm

Repeater 72 x 170 x 45mm

IP Rating Analyser IP65 Repeater IP65 (quick connect IP43)
Sounder 85dbA @ 10cm
Alarms 18.0% Alarm 19.5% Alarm

Other Information

Optional Extras 4 to 20mA, 0 to 1V, 2 x relays
Warranty 2 years

EMC Directive 89/336/EEC (EN50270:1999, EN61000-63:2001+A11:2004).

Low Voltage Directive 73/23/EEC (BS EN 61010-1:2001, IEC 61010-1(2ed)) AS61010.

1-2003 (Australia & New Zealand) CSA (cCSAus), Master Contract 239512, Certificate 1909026.


Order Code
FANXAX1BK10X55QXY30 O2NE Oxygen Monitor - 7 Year Sensor Life, Repeater, UK Plug, 230V
FANXAX1BK10X55Q4Y30 O2NE Oxygen Monitor - 7 year Sensor Life, Repeater, UK Plug, 230V, 4-20mA output
FANXAX1BK10X11QXY30 O2NE Oxygen Monitor - 7 Year Sensor Life, Repeater, Euro Plug, 230V 
FANXAX1BK10X11Q4Y30 O2NE Oxygen Monitor - 7 year Sensor Life, Repeater, Euro Plug, 230V, 4-20mA output
FANXAX1BK10X20QXY30 O2NE Oxygen Monitor - 7 Year Sensor Life, Repeater, Australia Plug, 230V
FANXAX1BK10X20Q4Y30 O2NE Oxygen Monitor - 7 year Sensor Life, Repeater, Australia Plug, 230V, 4-20mA output

As part of our policy of continuous improvement we reserve the right to upgrade or change specifications without prior notice.

Manufactured by: Analox

15 Ellerbeck Court, Stokesley Business Park
Stokesley, North Yorkshire, TS9 5PT, United Kingdom

Contact Us

The Planer Cryogenic Storage range is offered to the international market. 

Please contact us to get further information.

O2NE Downloads

Planer Limited

110 Windmill Road
TW16 7HD
United Kingdom

+44 1932 755000
Contact Us