5. Specifications
ConchaTherm Neptune Performance Characteristics:
Patient
Airway Temperature Ranges (Adjustable):
Invasive Mode Heated-Wire Circuit: 32-39 ºC
Non-heated Wire Circuit: 30-37 ºC
Non-Invasive Mode Heated-Wire Circuit: 30-37 ºC
Non-Heated-Wire Circuit: 30-37 ºC
T
emperature Display: Three-digit, seven-segment LED
High-Temperature Alarm Limit: 41.0°C typical
Tracking Alarm: ± 2.0°C of the selected airway temperature, after the set temperature has been
reached.
W
arm-up time: (Warm up is defined as patient temperature within 2°C of set point)
Heated-Wire 10 minutes
Non-Heated Wire 35 minutes
Recommended Flow Rates*:
Adult (22mm Circuits) Heated-Wire Circuit 3 to 40 LPM
Adult (22mm Circuits) Non-heated Wire Circuit 6 to 20 LPM
Pediatric (15mm Circuits) Heated-Wire Circuit 1 to 40 LPM
Pediatric (15mm Circuits) Non-heated-Wire Circuit 5 to 20 LPM
Infant/Neonatal (10mm Circuits) Heated-Wire Circuit 1 to 20 LPM
Infant/Neonatal (10mm Circuits) Non-heated Wire Circuit 3 to 20 LPM
Continuous Flow Oxygen: Comfort-Flo System 1 to 40 LPM
*The Invasive Mode of the Concha Neptune was designed to provide 100% RH , as evidenced by moisture con-
densation, or “rainout” in the circuit at the recommended flow rates over the settable proximal airway tempera-
ture settings at zero gradient. In some cases, the use of positive gradient settings “ ” or flow rates outside
the recommended ranges may result in increased warm-up times or lower than recommended humidity outputs.
Additionally, some environmental conditions, such as warm ventilator outlet gas temperatures and/or high ambi-
ent temperatures, may require the use of the negative gradient setting ” ” to reach 100% RH, or visible
moisture droplets in the circuit.
Humidity Output:
Invasive Mode > 33 mg H
2
O/L at 32º C proximal airway temperatures when set at zero
gradient at the recommended Flow Rates listed above.
• Use of Positive or "Sun" gradient settings in some conditions can result in
humidity outputs at the patient of less than 33mg H
2
O/L at 32º C. Visually
inspect for condensation droplets in the inspiratory circuit after one hour of
operation, and periodically thereafter.
Non-Invasive Mode > 10 mg/L at 32º C proximal airway temperatures when set at zero
gradient at the recommended Flow Rates listed above.
• This mode should only be used when the patient airways ARE NOT
bypassed.
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