Question 1

What is ceramic pressure sensor?

Accepted Answer

Ceramic pressure sensors are also called ceramic piezoresistive pressure sensors. It is a dry-type ceramic piezoresistive pressure sensor refined by a special process using ceramic materials. Ceramic is a recognized highly elastic, corrosion-resistant, wear-resistant, shock- and vibration-resistant material.

Question 2

Which type of pressure sensor is the best?

Accepted Answer

There are many types of pressure sensors. We cannot absolutely say which pressure sensor is the best. Because the best is not necessarily the most applicable.

When we purchase pressure sensors, we must combine our own measurement parameters to choose the most suitable pressure sensor. In order to ensure the best measurement results.

The following are several commonly used pressure sensors:

Ceramic piezoresistive pressure sensor: with high precision and high stability of measurement. The electrical insulation degree is greater than 2KV, the output signal is strong, and the long-term stability is good.

Single crystal silicon pressure sensor: wide measuring range, high precision, wide working temperature. Good stability and excellent static pressure characteristics. It has good one-way compression characteristics.

Capacitive pressure sensor: low input force and component Ru energy. High dynamic response, small natural effects. Good environmental adaptability.

Sapphire pressure sensor: The main advantage is that it can measure high temperature media. Insensitive to temperature changes. The drift in time at high temperature is the lowest among these types of sensors.

Quartz crystal pressure sensor: high frequency response pressure sensor, quick response. The digital output is stable and reliable. It has strong anti-interference and is suitable for long-distance transmission. Eliminates simulation
The complexities of digital conversion and the errors it creates.

Sputtering thin film differential pressure sensor: the outstanding feature is that it is less affected by temperature. When the temperature changes by 100°C, the zero point drift is only 0.5%. Its temperature performance is much better than that of diffused silicon, and it can be used under harsh environmental conditions.

Strain-type differential pressure sensor: The most widely used is the strain-type pressure sensor, which has extremely low price, high precision and good linearity. Resistance strain gauge
There are mainly two types of metals and semiconductors. Metal strain gauges are divided into wire type, box type and film type. Semiconductor strain gauges have the advantages of high sensitivity and small lateral effects.

The above is the introduction of the pressure sensor. These are the commonly used ones, and each has its own characteristics. When choosing, determine the type according to your needs.