PHiliphhilip Respironics V60 Ventilator Gas delivery Air and Oxygen Flow Sensor Assembly Parts Used PN 1033547
► Brief Introduction
The ventilator delivers gas to the patient through a main flow (inspiratory) bacteria filter, a single-limb patient breathing circuit, a humidification device (optional), and a patient interface such as a mask or ET tube. A pressure tap proximal to the patient is used to monitor patient pressure. The internal exhalation port continually clears gas from the ventilator airway to ensure delivery of an accurate oxygen mixture.
Oxygen Solenoid Valve
The oxygen solenoid valve and valve driver circuitry control the flow of oxygen according to the set O2 and flow. The oxygen solenoid valve is closed when there is a loss of power or system reset.
Oxygen Flow Sensor
The oxygen flow sensor measures a subset (bypass flow) of the total flow. These measurements are interpolated according to constants that are calculated during GDS calibration. Together, the oxygen solenoid valve and flow sensor provide closed-loop control for delivered oxygen flow.
- Calibration of selected gas (air or oxygen).
- Provide a signal source for oxygen and air flow signals. Convert the manifold gas flow into an analog signal, which is sent to DA PCBA for filtration and conversion.
- The airflow sensor measures flows from -240 to 240 SLPM. The oxygen flow sensor measures flows from 0 to 240 SLPM.
- Includes EEPROM for calibration data, panel identification information, and operating hours for each flow sensor.
► Specifications
| IPAP | 4 to 40 cm H₂O |
| CPAP | 4 to 25 cm H₂O |
| EPAP | 4 to 25 cm H₂O |
| Max P (PPV maximum pressure limit) | 5 to 40 cm H₂O |
| Max P (AVAPS maximum IPAP) | 6 to 40 cm H₂O |
| Min P (AVAPS minimum IPAP) | 5 to 30 cm H₂O |
| Inspiratory time | 0.30 to 3.00 s |
| Oxygen percentage | 21 to 100 % |
► Pneumatics
The pneumatic subsystem delivers and monitors pressurized gas to the patient in response to commands from the CPU subsystem. The pneumatic subsystem includes the:
- Manifold
- Blower
- Oxygen solenoid valve
- Air and oxygen flow sensors
- Pressure transducers
- Solenoid valves
- Motor controller (MC) PCBA
- Data acquisition (DA) PCBA
► Installation
Follow these steps to remove the air and oxygen flow sensor assembly. Reverse to install.
- Remove GDS.
- Disconnect the flow sensor cable from the DA PCBA and flow sensor assembly.
- Remove the screws that attach the DA PCBA to the flow sensor assembly.
- Remove screws that attach the flow sensor assembly to the manifold block.
When installing a new flow sensor assembly, install the new o-rings.
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