40 Specifications
487
M3014A Mainstream and Sidestream CO
2
Humidity Correction Factor
Either BTPS or ATPD can be selected as the humidity correction factor for the CO
2
readings. The
formula for the correction calculation is:
M3014A Sidestream CO
2
Performance Specifications
CO2 Range 0 to 150 mmHg (0 to 20.0 kPa)
Accuracy after 2 minutes warmup:
For values between 0 and 40 mmHg: ±2.0 mmHg (±0.29 kPa)
For values from 41 to 70 mmHg: ±5% of reading
For values from 71 to 100 mmHg: ±8% of reading
For values from 101 to 150 mmHg: ±10% of reading
At respiration rates above 80 rpm, all ranges are ±12% of actual. The
specifications are valid for gas mixtures of CO
2
, balance N
2
, dry gas at
760 mmHg within specified operating temperature range.
Resolution Numeric: 1.0 mmHg (0.1 kPa)
Wave: 0.1 mmHg (0.01 kPa)
Stability:
Short term drift ±0.8 mmHg over four hours
Long term drift Accuracy specification will be maintained over a 120 hour period
awRR Range 2 to 150 rpm
Accuracy ±1 rpm
Warm-up Time 2minutes with CO
2
sensor attached for full accuracy specification
Sample Flow Rate 50 ±10 ml/minute
Total System Response Time 3seconds
Operating Temperature 0 to 40°C (32 to 100°F)
where:
P
BTPS
= partial pressure at body temperature and pressure,
saturated
P
ATPD
= partial pressure at ambient temperature and pressure,
dry
Pabs = absolute pressure
P
H2O
= 42 mmHg @35°C and 100% RH
M3016A Mainstream CO
2
Performance Specifications
CO2 Range -4 to 150 mmHg (-0.5 to 20.0 kPa)
Accuracy after 20 minutes warmup and calibration:
For values between 0 and 40 mmHg: ±2.2 mmHg (±0.29 kPa)
For values between 40 and 76 mmHg: ±5.5% of reading
The specifications are valid for 45% O
2
and N
2
or N
2
O balance. Outside these
conditions the accuracy reaches at a minimum the requirements of EN864/
ISO9918.
Resolution Numeric: 1.0 mmHg (0.1 kPa)
Wave: 0.1 mmHg (0.01 kPa)
Stability ±1.0 mmHg over a 7 day period
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