The pump pressure sensor is a device or equipment that can sense the pressure signal and convert the pressure signal into an available output electrical signal according to a certain rule.

The pressure sensor usually consists of a pressure sensitive element and a signal processing unit. According to the different types of test pressure, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and pressure sensors.

Pump pressure sensor is a kind of sensor commonly used in industrial practice, which is widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent building, production automatic control, aerospace, military, petrochemical, oil well, electric power, ships, Machine tools, pipelines and other industries. The following is a brief introduction to some common sensor principles and applications. There is also a medical pressure sensor.

Water pump pressure sensor type and working principle

1. Piezoresistive pressure sensor

Resistance strain gauge is one of the main components of piezoresistive strain sensor. The working principle of the metal strain gauge is that the strain resistance adsorbed on the substrate changes with mechanical deformation, commonly known as the resistance strain effect.

2. Ceramic pressure sensor

Ceramic pressure sensors are based on the piezoresistive effect. The pressure acts directly on the front of the ceramic diaphragm, causing the diaphragm to deform slightly. Thick film resistors are printed on the back of the ceramic diaphragm and connected to form a Wheatstone bridge. Due to the piezoresistive effect of the varistors, the bridge generates a highly linear voltage signal proportional to the pressure and the excitation voltage. The standard signal is calibrated as 2.0/3.0/3.3MV/V according to different pressure ranges, which can be used in conjunction with strain sensors.

3. Diffused silicon pressure sensor

The working principle of the diffused silicon pressure sensor is also based on the piezoresistive effect. Using the principle of piezoresistive effect, the pressure of the measured medium directly acts on the diaphragm (stainless steel or ceramic) of the sensor, so that the diaphragm produces a micro-displacement proportional to the pressure of the medium, and changes the resistance value of the sensor. An electronic circuit is used to detect the change and to convert and output a standard measurement signal corresponding to the pressure.

4. Sapphire pressure sensor

Based on the working principle of strain resistance, silicon sapphire is used as a semiconductor sensitive element with metrological characteristics. Therefore, the semiconductor sensor made of silicon-sapphire is insensitive to temperature changes and has good operating characteristics even at high temperatures. The radiation resistance of sapphire *; in addition, the silicon-sapphire semiconductor sensor has no p-n drift.

5. Piezoelectric pressure sensor

The piezoelectric effect is the main working principle of piezoelectric sensors. Piezoelectric sensors cannot be used for static measurement, because the charge after the external force can only be saved when the circuit has an infinite input impedance. This is not the case, which determines that the piezoelectric sensor can only measure dynamic stress.

Water pump pressure sensor is mainly used:

Pressurized cylinder, supercharger, gas-liquid pressurized cylinder, gas-liquid supercharger, press, compressor, air conditioning refrigeration equipment and other fields.