Development of slit-type pressure differentiator using an isothermal chamber

Recently, measurement of the differentiated value of pressure has become necessary to realize precise control of pneumatic apparatuses. This paper proposes a pressure differentiator that contains a slit-type laminar flow element and an isothermal chamber. The underlying principle and the design method for the sensor are detailed. Then, simulations and experiments are conducted. The results verify the effectiveness of the proposed sensor and its potential in future applications.