LifeSense® Specifications

Print Specs

Pulse Oximeter Specifications

Displayed Oxygen Saturation Range (SpO2): 0 to 100 %
Displayed Pulse Rate Range: 18 to 255 BPM
Measurement Wavelengths*:
Red: 660 nanometers @ 0.8 mW max. average
Infrared: 910 nanometers @ 1.2 mW max. average

Accuracy – Sensors: Declared accuracy data for compatible sensors can be found in Nonin’s Sensor Accuracy document.

*This information is especially useful for clinicians performing photodynamic therapy.

SpO2 Accuracy Testing
SpO2 accuracy testing is conducted during induced hypoxia studies on healthy, non-smoking, light-to-dark-skinned subjects during motion and no-motion conditions in an independent research laboratory. The measured arterial hemoglobin saturation value (SpO2) of the sensors is compared to arterial hemoglobin oxygen (SaO2) value, determined from blood samples with a laboratory co-oximeter. The accuracy of the sensors in comparison to the co-oximeter samples measured over the SpO2 range of 70 – 100%. Accuracy data is calculated using the root-meansquared (Arms value) for all subjects, per ISO 80601-2-61, Standard Specification for Pulse Oximeters for Accuracy.

Capnography Specifications

Respiration Range: 3 to 60 respirations/minute
Update Frequency: Once every breath (No Breath alarm after 25 seconds)
Respiration Accuracy:
3 to 50 respirations/min ± 2
51 to 60 respirations/min ± 3

EtCO2/CO2 Range: 0 to 9.9 kPa or 0 to 99 mmHg
EtCO2/CO2 Accuracy:
±0.2 kPa / ±2 mmHg, +8% of reading†
540 – 795 mmHg
(EtCO2/CO2 reading reaches its steady state accuracy 10 minutes after power up)

Update Frequency: Once every breath (No Breath alarm after 25 seconds)
Sampling Rate: 4 Hz (4 times per second)
Total System Response Time: 4 seconds (includes delay time and rise time)
Drift of Measurement: Within CO2 accuracy specifications for 6 hours of continuous monitoring
Measurement: Automatic barometric pressure compensation and CO2 temperature compensation

† Presented concentration of CO2 and EtCO2 can be false, indicating a high presence of nitrous oxide and other interfering gases.

The table below shows the CO2 and EtCO2 concentration corrections. Only use agents listed in the table below.

Agent Concentration Correction of Presented CO2 to Real Concentration
50 – 70% N2O Presented CO2 x 0.75 = Actual CO2
30 – 50% N2O Presented CO2 x 0.85 = Actual CO2
0 – 30% N2O No correction
0 – 5% Isoflurane No correction
0 – 4% Halothane Presented CO2 x 0.98 = Actual CO2

System Specifications

Power Data:
Power Supply: 100 – 240 VAC 50 – 60 Hz
Power Consumption:
3.6 W with battery operation
9 W with power supply
Input: 12 VDC, 720 mA

Battery Data:
Type: Lithium Ion (Li-Ion) internal battery, non-field replaceable, rechargeable
Battery Capacity: Approximately 8 hours
Charging Time: Approximately 24 hours

Physical Data:
Dimensions: 200 x 135 x 50 mm (7.9 x 5.3 x 2 in.)
Weight: 800 grams (1.8 pounds)

Working Temperature: 23 °F to 104 °F (-5 °C to 40 °C)
Device temperature will not exceed 41°C as measured during a controlled environment test.

Humidity: 10% to 90% (non-condensing)
Atmospheric Pressure: 720 to 1060 hPa (540 – 795 mmHg)
Altitude: Up to 9,000 ft (2,740 m)

Temperature: -40°F to 158 °F (-40 °C to 70 °C)
Humidity: 10% to 90% (non-condensing)

Pump Flow: 75 ml/min
Flow Accuracy: ±15 ml/min

Sound Pressure Level: 65 dBa maximum at 1 m in front of monitor

Classification per IEC 60601-1 / CAN/CSA-C22.2 No. 601.1 / UL60601-1:
Type of Protection: Internally powered class II (with power charger)
Degree of Protection: Type BF-Applied Part
Mode of Operation: Continuous
Enclosure Degree of Ingress Protection: IPX2

LifeSense® Troubleshooting


A. Prior to turning on the monitor:

  1. Insert the filter into the trap.
  2. Insert the trap and filter into the monitor – insert the top of the trap first, then snap in bottom. (Look for the numbers 1 and 2 embossed on the monitor in the area where the trap inserts.)

B. Turn on the monitor.

  1. Disable audible alarms by pressing the ‘NO ALARM’ icon on the start-up screen.
  2. After starting the monitor and pump is running (about 15 seconds), you will see ‘WARM UP’ then ‘NO BREATH’ displayed.

C. Verify that trap and filter are seated properly

  1. Hold your finger over the trap inlet where the cannula connects. After a few seconds, the pump will slow and you will get an ‘OCCLUSION’ display.
  2. Release your finger and the monitor is ready. This indicates that the trap and filter are positioned correctly. (Skip to Section II.)
  3. If, after 5-10 seconds, ‘NO BREATH’ is still displayed, the filter is not seated properly. After re-seating the trap and filter, repeat Step 1 above. If again this does NOT show an ‘OCCLUSION’ alarm, then there may be trouble with the unit. (Proceed to Section D below.)


D. Checking the monitor

  1. With the unit running remove the trap and filter and place your finger over the small hole in the recessed area of the monitor. The monitor’s pump will stop running.
  2. Restart the pump by pressing the red ALARM/RESET button with your finger still over the hole.
  3. If the pump restarts and displays OCCLUSION followed by ‘TRAP FULL/PUSH ALARM’ the monitor is working properly. Change filters and try to insert the trap and filter again. If the pump restarts and runs without ‘TRAP FULL/PUSH ALARM’ displayed, then the monitor is not functioning properly. Contact Nonin Technical Service.



A. Occlusion indication during operation

  1. If the monitor occludes, ‘TRAP FULL/PUSH ALARM’ will be displayed.
  2. Reset the monitor up to two (2) times by pressing the ALARM/RESET button.
  3. If the monitor occludes again, the pump will run for several seconds then shut off and display ‘OCCLUSION’ followed by ‘TRAP FULL/PUSH ALARM’.
  4. To determine if the occlusion is in the cannula or the filter/trap combination, disconnect the cannula from the trap (Luer connector) and press the ALARM/RESET button. .

If the monitor restarts and runs properly for 10-15 seconds, then the occlusion is in the cannula and the cannula should be replaced. If the unit occludes and shows the ‘TRAP FULL/PUSH ALARM’ the occlusion is in the filter. Replace the filter and restart the monitor by pressing the ALARM/RESET button.

Frequently Asked Questions

What is included in the LifeSense package assembly?

One LifeSense monitor, one moisture trap with three filters, one AC/DC battery charger, one sample line, one straight t-connector, three sampling nasal cannulas, Operator’s Manual, and one PureLight® (8000AA) 2-meter finger clip SpO2 sensor.

What is LifeSense’s recommended sampling cannula length (sampling tube)?

7 feet (2.1 meters).

What is the longest combination of NONIN extension cable and NONIN oximeter sensor cable specified for use with LifeSense?

Recommended overall maximum length of extension cable plus sensor cable is 40 feet (12 meters). A nine meter NONIN extension cable may be used with a NONIN three meter sensor.

How often do I need to replace the filter?

Each filter is single-use, disposable. Replace after each use or if an occlusion occurs.

What happens to the trending graph after four hours have been displayed?

LifeSense will continue displaying data in a “looping” fashion, replacing the oldest trend data with the newest data.

Does the LifeSense monitor store data in its memory?

No. A TrendSensedata memory module can be added to the monitor for storage of up to 72 hours of EtCO2,

SpO2, pulse rate, and respiratory rate data. The data is collected once per second and can be transferred to a PC.

What kind of battery is used in LifeSense?

Rechargeable lithium ion battery pack.

How many hours of battery life can I expect?

Up to eight hours when fully charged.

How long does it take to recharge the battery pack?

If the battery pack is completely depleted and the system is turned off, it will take approximately 17 hours. The battery pack charges while the device is plugged in to AC power.

How do I adjust the “High or Low” alarm parameters?

Each specific parameter is adjusted by pressing the “up” or “down” arrow on the touch panel display bar.

Will the LifeSense monitor remember the users adjusted alarm settings when turned-off and turned-on again?

The LifeSense monitor resets alarm limits to factory settings once the monitor is turned-off.

How long will the audible alarm remain deactivated once the audible alarm pause button is pushed?

Two minutes. Visual alarms will remain activated.

What is the sampling flow rate of LifeSense?

The sampling flow rate is 75 ml/minute ±15ml/minute.

How many minutes of use remain once the “LOW BATTERY” message is displayed?

Approximately 20 minutes.

Can I use LifeSense to monitor EtCO2 on intubated and spontaneous breathing patients?

Yes. Use a sampling cannula or ET-tube adapter with sampling tube for either application.

What is the patient age range for LifeSense?

LifeSense can monitor EtCO2, SpO2, pulse rate and respiratory rate of adult, pediatric and infant patients. The appropriate cannula and sensor must be used. Refer to Operator’s Manual for specific information.

Can I place the LifeSense in a ventilator circuit line?

Yes. LifeSense can be used with a ventilator. An appropriate adaptor and Nafion tubing are required. Please note cautions and warnings in Operator’s Manual.

How often should I calibrate the capnograph?

It is recommended that you carry out the calibration procedure at least once a year.

Does the oximeter require calibration?

No calibration is required.

What if LifeSense no longer displays a “zero CO2 graph”?

LifeSense has a built-in zero-point calibration function for EtCO2. Calibration should be conducted at least once a year and more, if needed. An annual inspection should be carried out as well. Refer to Operator’s Manual.

What is the warranty period for LifeSense?

1-year. Battery pack, oximetry sensor, touch panel display.

3-years. All other monitor parts.

Can I replace the battery myself?

No. If you suspect the battery needs replacement, contact Nonin Medical, Inc technical service at 1-800-356-8874 or send an e-mail to

How do I turn-off the “Trap Full” alarm?

  1. Turn the monitor off.
  2. Check the moisture trap and filter. Replace them as needed.
  3. Check sampling line for kinks or occlusions and replace as needed. Press the audible alarm pause button to continue.

If LifeSense was turned-on without the SpO2 sensor connected should it be restarted in order to use the SpO2 function?

No. Connect the sensor to LifeSense and it will display SpO2 readings.

How much data can be stored on the TrendSense™ Oximetry module?

Up to 72 hours of pulse rate and SpO2 data may be stored. The TrendSense communicator software may be used to retrieve and analyze the data.


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