Masimo EMMA Capnometer
Masimo · Model EMMA Capnometer
Simple, easy-to-use interface for quick setup and one-touch programming Audible and visual alarm system for No Breath Detected, No Adapter, Check Adapter, and adjustable high and low EtCO2 alarm Minimal warm-up time, with EtCO2 and respiration rate measurements and real-time EtCO2 waveform displayed in 15 seconds. Lightweight design fits in the palm of your hand for mobility and convenience during short-term EtCO2 monitoring of adult, pediatric, and infant patients. Designed to fit easily onto a breathing circuit. Flexible use at multiple points of care including pre-hospital, emergency medicine, operating room, intensive care unit, and long-term acute care. Rugged design for reliable operation in challenging environments. No routine calibration required. Audible and visual alarm system for No Adapter, Clogged Adapter, Apnea, Low Battery, and adjustable High and Low EtCO2 alarm.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
EtCO2 reading drift / needs zero
HighSymptoms: EtCO2 offset, slow response, or a zero-required prompt.
Root cause: Airway adapter contamination / moisture, or IR bench aging in the sealed EMMA head.
No CO2 waveform
MediumSymptoms: Flat trace, occlusion or "check adapter" message.
Root cause: Blocked or wet airway adapter, or a dead EMMA unit.
Battery fault
MediumSymptoms: Short run time, will not power on.
Root cause: Depleted AA cells or battery contacts.
Adapter / sampling-line supply issue
LowSymptoms: Repeated occlusion or contamination flags.
Root cause: Reused single-patient adapter / Nomoline, or wrong adapter type.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Airway adapter (single-patient)
Class ConsumableRel. cost $R&R Easy
EMMA main unit (sealed IR bench)
Class Periodic replacementRel. cost $$$R&R Easy
AA batteries
Class Frequent wear itemRel. cost $R&R Easy
Mainstream airway adapter
Class ConsumableRel. cost $R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Airway adapter (single-patient) | Consumable | $ | Easy |
| EMMA main unit (sealed IR bench) | Periodic replacement | $$$ | Easy |
| AA batteries | Frequent wear item | $ | Easy |
| Mainstream airway adapter | Consumable | $ | Easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: EtCO2 value looks wrong
- Fit a fresh airway adapter and clear any moisture.
- Allow the bench to warm up and perform a zero in room air.
- Replace the EMMA unit if it will not zero or hold accuracy.
- Verify against a reference CO2 concentration if available.
- Return to use only after a clean capnogram.
Symptom: No waveform
- Fit a clean, dry airway adapter.
- Check the adapter / line for a kink or blockage.
- Try fresh batteries.
- Replace the EMMA unit if still dead.
- Confirm a normal capnogram.