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Transducer Type
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Mainstream
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Principle of Operation
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Non-dispersive infrared (NDIR) single beam optics, dual wavelength, no moving parts.
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Initialization Time
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Capnogram displayed in less than 3 seconds,
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at an ambient temperature of 25℃, full specifications within 30 seconds
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CO2 Measurement Range
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0 to 152 mmHg, 0 to 20.0%, 0 to 20 kPa
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CO2 Calculation Method
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BTPS (Body Temperature Pressure Saturated)
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CO2 Rise Time (10 - 90% of step change of final CO2 value)
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8 ms - for detector
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50 ms - for system
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CO2 Resolution
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0.01 mmHg 0 to 69 mmHg, 0.02 mmHg 70 to 150 mmHg
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CO2 Accuracy *
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0 - 40 mmHg
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±2 mmHg
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41 - 70 mmHg
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±5% of reading
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71 - 100 mmHg
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±8% of reading
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101 - 150 mmHg
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±10% of reading
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* NOTE: Temperature at 35 ℃.
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CO2 Stability
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Short Term Drift: Drift over four hours shall not exceed 2 mmHg maximum.
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Long Term Drift: Accuracy specification will be maintained over a 120 hour period.
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CO2 Noise
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RMS noise of the sensor shall be less than or equal to 0.25 mmHg at 7.5% CO2
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Sampling Rate
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100 Hz
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Respiration Rate Range
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2 to 150 breaths per minute (BPM)
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Respiration Rate Accuracy
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±1 breath
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Calibration
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No routine user calibration required. An airway adapter zero is required when insert an airway adapter.
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Safety lock-outs:
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• System does not allow adapter zero for 20 seconds after the last breath is detected.
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• System does not allow adapter zero if temperature is not stable.
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• System does not allow adapter zero if there is CO2 gas in the airway adapter.
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ETCO2 Calculation
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Method: Peak of the expired CO2 waveform
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Selections: 1 breath, 10 second, 20 second
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Note: the minimum reported differential value between the baseline and the CO2 value shall be 5 mmHg.
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Inspired CO2 Measurement
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Range: 3 to 50 mmHg
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Method: Lowest reading of the CO2 waveform in the previous 20 seconds
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Compensations (Host Controlled)
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Compensations for: Expired O2 , balance gas (N2 , N2 O, He) and anesthetic agents
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Uses gas compensation information and barometric pressure to correct the raw carbon dioxide value
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O2 Compensation
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Range: 0 to 100%
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Resolution: 1%
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Default: 16%
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N2O Compensation
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Range: 0 (off) or 1 (on)
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Default: Off
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Note: If ON, the balance of the mixture is O2
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He Compensation
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Range: 0 (off) or 1 (on)
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Default: Off
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Note: If ON, the balance of the mixture is O2
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Total Pressure
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Range: 400-850 mmHg.
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Total pressure = Barometric plus Airway pressure. Barometric pressure provided by host.
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Airway Adapter Type
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Pediatric/Adult Reusable Airway Adapter, Infant/Pediatric Reusable Airway Adapter
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Input Voltage
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5.00 Volts (± 5%)
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Power Consumption
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900mW (typical)
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Warm-up Time
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3 seconds
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Interface
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Highly configurable serial digital interface(TTL/RS232), CO2 waveform data, Breath Detect Algorithm data
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Temperature and Humidity
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Operating: 0 to 55ºC, 10 to 90% RH, non-condensing
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Storage: -40 to 70ºC, <90% RH, non-condensing
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Dimensions
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50mm*22mm*36mm
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Weight
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< 95 grams, only the module
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Interconnection
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Standard Lemo Redel 8-pin plastic Material PSU
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Pin out:1. VA 5.0V; 2. Shield Shield; 3. DGND Digital return; 4. VA 5.0V; 5. TxD Serial data from the Module;
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6. RxD Serial data from Host; 7. AGND Analog return; 8. NC
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