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Pulmonary Function Test • Publication 014181-001 Rev 02 • www.datasci.com ©2023 Data Sciences International
5. Large Animal/Small Animal mode selection switch – Toggles between the large animal and small animal
flow vale adjustment control knobs. A green indicator light will illuminate above the selected valve control
knobs. The large green knobs control the large animal flow rates when the PFT Pressure Panel is connected
to the large animal reservoir. The small silver knobs control the small animal flow rates when connected to
the small animal reservoir.
6. Inspiration Flow Valve Adjustment knobs – These knobs control the large animal or small animal
inspiration flow rate that is used in the PV and FV tests during inspiration to 30 cm H20 (this is a positive
flow).
7. Slow Expiration valve - These knobs control the large animal or small animal slow expiration flow rate that
is used during the Pressure Volume (PV) test during expiation (this is a negative flow).
8. Digital Flow and Pressure Displays - These displays are used to set the flow rates and confirm the pressure
in the positive and negative reservoirs. There are trim screws to allow you to easily adjust the zero should
the sensors drift.
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