M2501A Mainstream CO₂ Sensor

Basic Information

• Part Number: M2501A
• Measuring Principle: Mainstream Infrared Absorption Spectroscopy
• Applicable Models: MP2, MP5, MP20, MP30, MP40, MP50, MP60, MP70, MP80, MP90, M3002A, M3014A monitor modules
• Connector: 8-pin circular connector

Measurement Performance

• CO₂ Measuring Range: 0–150 mmHg (0–20 kPa)
• Accuracy (at 25°C):
  • 0–40 mmHg: ±2 mmHg
  • 41–70 mmHg: ±5% of reading
  • 71–100 mmHg: ±8% of reading
  • 101–150 mmHg: ±10% of reading
• Resolution:
  • 0–59 mmHg: 0.1 mmHg
  • 60–114 mmHg: 0.25 mmHg
• Rise Time: ＜60 ms (adult / pediatric airway adapter)
• Respiratory Rate Range: 2–150 BPM; Accuracy: ±1 BPM
• Stability:
  • Short-term drift: ≤0.8 mmHg within 4 hours
  • Long-term performance: Maintains accuracy within specifications for 120 hours
• Warm-up Time (at 25°C): Waveform output ＜15 s; Full specification operation ≤2 min

Compensation & Calibration

• Pressure Compensation: 400–800 mmHg (automatic)
• Gas Compensation: O₂, N₂O, He (optional)
• Calibration: No routine calibration required; 15-second zero calibration needed after replacing airway adapter

Physical & Environmental Specifications

• Dimensions (Sensor): Approx. 33 × 48 × 23 mm (H×W×D)
• Weight: ＜25 g (excluding cable)
• Standard Cable Length: 3 m (9.8 ft)
• Operating Temperature: 0°C ~ 45°C
• Operating Humidity: 10% ~ 90% RH, non-condensing
• Storage Temperature: -40°C ~ 70°C
• Storage Humidity: ＜90% RH, non-condensing
• Ingress Protection: IPX4 (splash-proof)
• Drop Resistance: Withstands 1.8 m drop onto tile floor (operational state)
• Material: Latex-free