FEATURES The Series 1120 Flow / Volume Simulator is a servo motor driven piston pump that can be used for testing spirometry products and other respiratory devices. It is designed to be used in product development and manufacturing test applications.  The Flow / Volume Simulator operates in three modes.  The exhale waveform mode is used to test spirometry devices using the ATS waveforms, peak flow waveforms or custom waveforms.  The steady flow mode can be used to generate steady state flows over a wide range of flow rates.  This mode can be used to test and calibrate flow meters.  The breathing waveform mode can be used to produce a continuous inhale / exhale flow waveform that simulates breathing.  All of the modes provide graphs for the flow and pressure signals.  Data collected during the test can be saved to a file for additional analysis.