1. Differential pressure sensor: A differential pressure sensor is a sensor that measures the pressure difference between two different positions. It usually consists of two measuring units, which are installed at two different positions of the measured medium, and the signals are input to the control system through electrodes and wires for processing. Differential pressure sensor is widely used in flow measurement, liquid level measurement, wind speed measurement and other fields.
2. Residual pressure sensor: Residual pressure sensor is a sensor that measures the pressure difference of gas or liquid relative to atmospheric pressure. Usually, piezoresistive or capacitive sensor technology is used to measure the negative pressure or positive pressure intensity inside the pipeline or container. Residual pressure sensors are widely used in medical equipment, air conditioning systems, automobile manufacturing and other fields.
3. The main difference between differential pressure sensor and residual pressure sensor lies in the different measuring objects. The pressure difference sensor focuses on measuring the pressure difference between two positions, and the residual pressure sensor focuses on measuring the internal and external pressure difference.