Working Principle of Diffused Silicon Pressure Sensors

In the field of industrial automation, pressure transmitters are indispensable key devices in flow control systems. The MBS3050 pressure transmitter adopts advanced diffused silicon sensor technology and can achieve high-precision measurement of liquid and gas pressure. The core component of a diffused silicon sensor is a specially treated silicon chip. When external pressure acts on the silicon chip, its resistance value changes accordingly, and this change is converted into an electrical signal output through a Wheatstone bridge.

The working principle of a diffused silicon sensor can be summarized in the following steps: first, the pressure of the measured medium is transmitted to the filling liquid through an isolation diaphragm; then, the filling liquid uniformly transmits the pressure to the silicon chip; next, the silicon chip deforms under pressure, causing its resistance value to change; finally, the signal conditioning circuit converts the resistance change into a standard 4-20mA or 0-10V output signal.

Structural Features of Diffused Silicon Sensors

The diffused silicon sensor used in the MBS3050 pressure transmitter has unique structural advantages:

• Monocrystalline silicon material: excellent elastic properties and stable physical characteristics
• Miniaturized design: compact size and fast response speed
• All-solid-state structure: no mechanical wear and long service life
• Temperature compensation circuit: effectively reduces the impact of ambient temperature on measurement accuracy

Performance Comparison and Selection Guide for Mainstream Models

In practical applications, operators need to select a suitable pressure transmitter model according to specific working conditions. The following are the performance characteristics of several common models:

Key Factors for Selection

When selecting a diffused silicon pressure transmitter, operators need to consider the following factors:

1. Measurement range: it should cover about 1.5 times the actual working pressure
2. Medium characteristics: corrosive media require special materials
3. Ambient temperature: for high-temperature environments, choose models with temperature compensation
4. Output signal: select 4-20mA or 0-10V according to the control system requirements
5. Explosion-proof requirements: explosion-proof products are required for hazardous areas

Key Points for Pressure Transmitter Installation and Maintenance

Correct installation and maintenance are key to ensuring the long-term stable operation of pressure transmitters. For diffused silicon pressure transmitters such as the MBS3050, operators should pay attention to the following matters:

Installation Precautions

• The installation location should avoid strong vibration and mechanical shock
• When measuring liquid pressure, the transmitter should be installed on the side of the pipeline
• When measuring gas pressure, the transmitter should be installed above the pipeline
• The connecting cable should be kept away from strong electromagnetic interference sources

Daily Maintenance Recommendations

To extend the service life of the pressure transmitter, it is recommended that operators:

1. Regularly check zero drift
2. Perform calibration once every six months
3. Keep the sensor interface clean
4. Record operating data and detect abnormalities in time

Common Problem Solutions

During actual use, operators may encounter various problems. The following are common faults of diffused silicon pressure transmitters and their solutions:

Summary and Purchasing Recommendations

With its advantages of high precision and good stability, diffused silicon pressure transmitters are widely used in the field of industrial automation. As a professional high-tech enterprise, Xi'an Shenghongchuang Instrumentation Co., Ltd. has earned a good reputation in the industry for its MBS3050, P-A1016, HC802 and other series products.

For users who need to purchase pressure transmitters, it is recommended to:

• Choose regular manufacturers to ensure product quality
• Select the appropriate model according to actual working conditions
• Attach importance to installation and maintenance
• Establish a regular calibration system

If you would like to learn more about the technical details or purchasing recommendations for diffused silicon pressure transmitters, please feel free to contact our professional technical team, and we will provide you with the most professional solutions.