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2026-05-19•~2 min readrespiratory flow sensorGEcleaningcalibrationDatex Ohmeda

GE respiratory flow sensors — cleaning and calibration

A guide to cleaning and calibrating respiratory flow sensors for GE Datex Ohmeda AS/3 and S/5. Extend service life and keep measurements accurate.

The respiratory flow sensor is a key sensor on the anesthesia machine and on the ventilator, measuring the patient's ventilation parameters: tidal volume, respiratory rate and minute ventilation. Proper care and timely calibration ensure measurement accuracy and extend service life.

Sensor types on the site

The site offers two models:

  1. GE respiratory flow sensor (universal): compatible with the GE Ventilator series, plug-and-play
  2. GE Datex Ohmeda respiratory flow sensor: for Datex Ohmeda AS/3 and S/5 systems, with real-time monitoring of respiratory parameters

Both are original GE spare parts with an exact match of electrical connector and mechanical dimensions.

Cleaning procedure

Before cleaning, disconnect the power and the gas supply:

  1. Carefully remove the sensor from the patient circuit without kinking the connecting cable
  2. Rinse the channel with warm water (< 40°C), remove secretions and mucus
  3. Gently treat the membrane area with a pH-neutral medical detergent
  4. Rinse thoroughly with plenty of water, avoiding detergent residue
  5. Place on a clean surface to dry naturally; do not use compressed air

Calibration

Regular calibration ensures measurement accuracy:

  • •Zero calibration: performed with the sensor open to atmospheric air
  • •Calibration against a reference: where calibration equipment is available — according to the manufacturer's recommendations
  • •Frequency: at least once a month under active use

Signs of a fault

  • •Drifting or unstable tidal volume readings
  • •Inability to perform zero calibration
  • •Visible damage to the membrane or housing
  • •Frequent false ventilation alarms

Where to buy

Medicaparts supplies original GE respiratory flow sensors:

  • •✅ Original GE Healthcare products
  • •✅ For AS/3, S/5 and other systems
  • •✅ Deliveries to Russia and CIS countries
  • •✅ Lead time confirmed when the order is placed

Telegram: @GEpartsV_bot

Conclusion

Correct care of the respiratory flow sensor — regular cleaning and calibration — substantially extends its service life and ensures accurate monitoring of the patient's ventilation. When signs of a fault appear, timely replacement with an original GE sensor is recommended.

Sources: GE Healthcare documentation, clinical guidelines

Frequently asked questions

Can the flow sensor be sterilised in an autoclave?
Most GE respiratory sensors are not recommended for autoclave sterilisation. Check the equipment manual. After use — low-temperature plasma or liquid chemical sterilisation.
What should I do if the sensor readings deviate significantly?
Perform zero calibration (as instructed). If the deviation persists, check the membrane for damage or liquid residue; replace the sensor if necessary.
How often should the flow sensor be cleaned?
Checking after each use is recommended, and cleaning when contamination is visible. As a minimum — a scheduled weekly clean.
Where can I buy original GE flow sensors with delivery to Russia?
Medicaparts offers direct supplies of original GE Healthcare respiratory flow sensors to Russia and CIS countries. Get in touch on Telegram @GEpartsV_bot.

Need the part number?

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