Pressurized environments are unique, as are the gas detectors used to monitor the area. The Sub Aspida is a compact portable atmosphere monitor, which is easy to operate and maintain.

Dual Calibration Adapter For Sub Aspida
Dual Calibration Adapter For Sub Aspida


This rugged and robust analyzer detects both carbon dioxide (CO2) and oxygen (O2) in pressurized environments from high altitudes to beneath the waves. Due to it’s size, it is perfect as a secondary monitor.

Unlike industrial sensing monitors, the Sub Aspida was designed with pressure corrected sensors, giving you 100% confidence in your readings.

Designed to withstand the deep pressures on board a submarine, the Sub Aspida has been upgraded to support those who work at high altitude.

Pressure tested to 10,000 ft or 700 MB, the Sub Aspida will remain accurate and reliable when monitoring CO2 and O2 in the atmosphere, meaning you can concentrate on the job in hand!

The Sub Aspida also finds itself at home inside of submarine rescue vehicles (SRV), tourist submarines and research submarines. The Sub Aspida produces accurate readings over a pressure range of 800-1200 MB, without false alarms. Having the option to power the unit from AA alkaline batteries in the event of the submarine losing power makes it a perfect back up safety monitoring system in order to comply with the rules around SRV’s and life support stores with emergency monitoring being needed for a minimum of three days.

For the transportation of COVID-19 vaccines requiring large quantities of dry ice, the FAA (Federal Aviation Administration) advise that:

  • CO2 sensors installed or carried in the aircraft or worn by the pilots and other crew members will assist the operator and crew in recognizing hazardous concentrations of CO2 and implementing effective risk controls.
  • Pilot training on specific conditions and procedures can improve pilot decision-making in the event of a COdetector alert or other system abnormalities.

To persons conducting operations under Title 14 of the Code of Federal Regulation (14 CFR) Parts 121, 125, 129, 135 on safety issues related to the transportation of COVID-19 vaccines by air, which may require larger than typical quantities of dry ice for preservation.

Operators must comply with applicable federal regulations pertaining to the carriage of dangerous goods (49 CFR parts 171-180).

  • It is the only portable monitor to be pressure corrected ensuring no false readings are given
  • The Sub Aspida is compact in size (127 x 44 x 90mm LxDxW)
  • The oxygen (O2) sensor can be calibrated on air, reducing costly gas requirements and making you self sufficient in the maintenance of the sensor
  • The carbon dioxide (CO2) sensor only needs calibrating every 12 months

The Sub Aspida is used in applications such as:

  • Submarine rescue vehicles
  • Submarine escape and rescue
  • Submarine atmospheres
  • Aircraft
  • HBOT (Hyperbaric Oxygen Therapy)

Oxygen (O2)
Carbon dioxide (CO2)

We want to ensure that your Sub Aspida is maintained to its optimum performance level. We have various support packages which you can sign up to, ensuring replacement sensors and maintenance is pre-arranged for you.

Call us to discuss which support package will benefit you and your unit the most.

  • Maintenance and Calibration Kit
  • Replacement Sensors

Sub Aspida Interactive ImageSub Aspida Interactive Image

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