Quick Overview
- Pre-owned and does power on.
- Does not include Cart
- The original PWG system is 47" (120cm) Long x 12.5" (32cm) Wide x 14.5" (37cm) High, 95 lbs (43.2 kg). The original PWG system is a computer-controlled, servomotor-driven air syringe, which can deliver any computer-stored waveform file within system performance specifications (0 to 12 liters of volume, 0 to 20 liters/second flow, 0 to 355 liters/second2 acceleration). It uses computer software which allows the display of precise data for each waveform delivered. Included with all PWG systems are the 24 volume-time ATS Standard Waveforms and the new 26 flow-time ATS Standard Waveforms. The custom-developed computer software is very user-friendly and will allow the user to easily define and deliver exponentially-shaped flow-vs.-time waveforms, constant-flow-rate waveforms and MVV waveforms (sinusoidally-shaped flow). Parameters measured include: each waveform's time duration, FVC, FEV1, FEFmax, FEFmid and VEXT. PWG systems deliver 80 microliters of air volume per count of the DC servomotor's optical rotary encoder, thus giving precise control when delivering any waveform. The system's software displays numerical data and graphs of flow, volume and pressure (resistance-to-flow) for each waveform delivered. The graph display has movable cursors for zooming in on any segment of the waveform and for identifying the time, flow and pressure of any point on the waveform graph. This data may be saved and/or printed for future reference and comparison. A Certificate of Calibration is provided with each PWG system, as well as instructions for use and instructions for routine maintenance and calibration verification checks. Each PWG system comes with the custom PWG 5.0 and PWG 6.1 software (which requires 10M of hard disk space and DOS), a computer interface cable, a servomotor controller board and an A-to-D board (which can be plugged into 8-bit slots in your P.C.). MHC has invested thousands of hours and tens of thousands of dollars over the years, in improving the design and performance of the PWG systems.
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