When using conventional pumps, pulsation-free airflow is rarely achieved without additional hardware such as baffles, accumulators and dampners. This can increase the cost, complexity and size of a system.
For many applications, smooth, low-pulsation airflow is essential. In measurement instrumentation (such as for gas analysis), pulsation often limits the signal-to-noise ratio and the resulting sensitivity. For microfluidics systems (such as point-of-care diagnostics), pulsation can cause poor flow control, leading to sampling errors.
Conventional pump technologies typically operate at speeds of up to 50 Hz (3000 RPM). LEE Ventus’ Disc Pump cycles more than 400 times faster, at 21000 Hz (equivalent to 1.26M RPM). Each cycle of the pump displaces a tiny quantity of air, typically in the range of 10s to 100s nanolitres. The resulting airflow is ultra-smooth and creates negligible pressure pulsation within the system.