Differences and selections between diffused silicon, monocrystalline silicon and capacitive differential pressure transmitters
INDUSTRIAL LCD DISPLAYS / IGBT MODULES DISTRIBUTOR

Infineon / Mitsubishi / Fuji / Semikron / Eupec / IXYS

Differences and selections between diffused silicon, monocrystalline silicon and capacitive differential pressure transmitters

Posted Date: 2024-01-31

Differences and selections between diffused silicon, monocrystalline silicon and capacitive differential pressure transmitters

Diffused silicon, monocrystalline silicon and capacitive differential pressure transmitters are instruments commonly used in industry to measure fluid pressure. Each of them has different characteristics and applicable scenarios. The differences and selection methods of these three pressure transmitters will be introduced in detail below.

1. Diffused silicon pressure transmitter

The diffused silicon pressure transmitter is a device that uses a silicon chip diffusion sensor to measure pressure. Its working principle is to convert the pressure of the medium to be measured into the strain generated on the silicon chip, and then convert it into an electrical signal output through the resistance change.

1. Features:

- High accuracy: The diffused silicon pressure transmitter can achieve a high accuracy of 0.1%.
- Long service life: The diffused silicon pressure sensor has good stability and corrosion resistance, and its service life can reach decades.
- Strong overload resistance: The sensor has good overload capability and can withstand large impacts and vibrations.
- Equipped with temperature compensation function: it can compensate for the influence of temperature and improve the accuracy of measurement.

2. Application:

- Industrial automation control: Diffusion silicon pressure transmitters are widely used in industrial automation control fields such as petroleum, chemical industry, electric power, water treatment, etc., for measuring the pressure of gas or liquid.
- Food and pharmaceutical fields: Diffused silicon pressure transmitters have good hygienic performance and reliability and are suitable for pressure measurement in food, pharmaceutical and other fields.

2. Monocrystalline silicon pressure transmitter

Monocrystalline silicon pressure transmitter is a device that uses monocrystalline silicon wafers for measurement. Its working principle is to use the transistor effect to measure pressure.

1. Features:

- Extremely high accuracy: The accuracy of single crystal silicon pressure transmitter can reach 0.1%.
- Good stability: Monocrystalline silicon sensors have high stability and long-term reliability.
- Strong anti-vibration ability: The sensor has good anti-vibration performance and is suitable for pressure measurement in various vibration environments.

2. Application:

- Aerospace field: Monocrystalline silicon pressure transmitters are widely used in aerospace fields such as aircraft and rockets to measure the pressure of gas and liquid.
- Automotive industry: Monocrystalline silicon pressure sensors are suitable for pressure measurement in the automotive industry, such as engine oil line pressure, fuel pressure, etc.

3. Capacitive pressure differential pressure transmitter

Capacitive pressure differential pressure transmitter is a device that uses the capacitance effect to measure pressure. Its working principle is to calculate the pressure difference by measuring the change in capacitance between two electrode plates.

1. Features:

- Good dynamic performance: Capacitive pressure differential pressure transmitter has fast response speed and is suitable for dynamic measurement.
- High resolution: Capacitive sensors have high resolution and are suitable for situations where high-precision measurements are required.
- Small size and light weight: Compared with diffused silicon and single crystal silicon pressure transmitters, capacitive pressure difference transmitters have a simple structure, small size and light weight.

2. Application:

- HVAC field: Capacitive pressure difference transmitters are widely used for fluid pressure measurement in HVAC systems.
- Filter monitoring: Capacitive pressure difference transmitter is suitable for monitoring the degree of filter clogging and can provide timely warning to replace the filter.

How to choose a pressure transmitter:

1. Measurement requirements: According to actual needs, determine the required measurement range, accuracy, fast response time and other indicators.

2. Working environment: Consider the measurement site environment, such as temperature, pressure, vibration and other factors, and select a pressure transmitter with corresponding temperature resistance, pressure resistance and vibration resistance.

3. Cost budget: Select the appropriate pressure transmitter based on the project budget and comprehensive consideration of factors such as price, service life, and reliability.

4. Brand selection: Choose pressure transmitters from well-known brands to ensure product quality and after-sales service.

To sum up, diffused silicon, monocrystalline silicon and capacitive differential pressure transmitters each have different characteristics and applicable scenarios. When selecting, it is necessary to comprehensively consider factors such as actual needs, working environment, and cost budget to select a suitable pressure transmitter.


#Differences #selections #diffused #silicon #monocrystalline #silicon #capacitive #differential #pressure #transmitters