A5/A3â„¢ Operating Instructions 046-003777-00 9 - 13
Product Specifications Breathing System Specifications
9.8.7 Breathing System Temperature Controller
9.8.8 Breathing Circuit Parameters
9.8.9 Materials
All materials in contact with the patient’s exhaled gas are autoclavable, except the flow sensors,
pressure gauge, bellows, and O
2
cell. All materials in contact with the patient's gas comply with
ISO 10993-1, ISO 10993-5, ISO 10993-10.
Inspiratory resistance:
TABLE 9-17 Resistance
Flow(L/min)
Pressure drop(kPa)
Breathing System Temperature
Maintained to:
35ºC typical at 20ºC ambient temperature
Note: The block heater does not operate while the system is being powered by the internal battery supply.
TABLE 9-18 Breathing System Temperature Controller
System Compliance: Volume of gas lost due to internal compliance (manual
ventilation mode only):
≤ 2 ml/cm H
2
O
Internal Compliance: ≤ 4 ml/cm H
2
O
Impedance in Manual Mode: ≤ 6 cmH
2
O (the gas under test is a bi-directional sine wave
at a frequency of 20 with tidal volume of 1 L)
Impedance in Automatic
Ventilation Mode:
≤ 6 cmH
2
O (the gas under test is a semi-sine wave at a
frequency of 20 with tidal volume of 1 L)
Leakage: ≤ 150 ml @ 3 kPa
System Safety Pressure on
Patient Circuit:
110 ± 10 cmH
2
O @ 10 to 10 L/min
TABLE 9-19 Breathing Circuit Parameters
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