Analysis of Common Drawbacks of Diffused Silicon Sensors in Pressure Transmitters

The MBS1900-064G6575 pressure transmitter is a commonly used measuring device in the industrial field. Although its core component, the diffused silicon sensor, features high accuracy, it still has several technical pain points in practical applications. The diffused silicon pressure sensor works through the piezoresistive effect of silicon crystals. When the medium pressure acts on the sensing element, the resistance value changes and thus outputs an electrical signal. This principle determines its sensitivity to environmental factors.

1. Temperature Drift Issues and Solutions

Temperature drift is one of the most prominent drawbacks of diffused silicon sensors. When the ambient temperature changes, the resistivity of the silicon material changes, resulting in a typical drift value of ±0.05%FS/℃ for models such as MBS1900-064G6601. This is particularly evident in working conditions with large temperature differences, such as petrochemical plants and thermal power generating units.

• Select models with temperature compensation: For example, the PT124B-210-100MPa-M20 pressure transmitter has built-in compensation over a wide temperature range of 0-70℃
• Environmental isolation measures: Install a thermal insulation jacket or heat sink around the sensor
• Regular calibration: It is recommended to perform zero-point calibration every quarter, with annual drift controlled within ±0.1%FS

For scenarios requiring long-term stable operation, you may consider the domestic industrial 2088 type pressure transmitter BTL801, which adopts a dual temperature compensation circuit to reduce drift to an industry-leading level.

2. Medium Compatibility Challenges and Response Strategies

Diffused silicon sensors are relatively sensitive to corrosive media. Although models such as PS6000-CR-BZ-A1-A-40/D/CD10/GK/QT use a 316 stainless steel isolation diaphragm, strong acids and strong alkalis may still penetrate through tiny gaps and damage the sensing element.

3. Mechanical Shock Protection and Installation Points

The brittle nature of diffused silicon chips makes models such as GPTJG-BSCHX vulnerable to damage in vibration environments such as locomotive braking systems. Special attention should be paid during installation:

1. Avoid direct installation near pulsation sources, and maintain a distance of at least 50cm
2. When using standard threads such as M20×1.5 for installation, the torque should be controlled at 15-20N·m
3. For compact sensors such as GPD-GPD10, it is recommended to use them together with vibration-damping brackets

Optimized Usage Solutions for Diffused Silicon Sensors

1. Signal Processing Technology Upgrade

Modern transmitters such as JYB-KO-HAG have adopted digital filtering technology, which can effectively suppress electromagnetic interference at industrial sites. The rise time of its 4～20mA output signal is ≤5 milliseconds, which is 30% faster than traditional analog circuits.

2. Regular Maintenance Procedures

It is recommended to establish the following maintenance schedule to ensure the long-term stable operation of models such as CS-m:

• Daily inspection: Observe whether there is leakage or abnormal noise
• Monthly testing: Use a standard pressure source to verify zero-point offset
• Annual overhaul: Thoroughly clean and replace aging sealing components

Industry Solutions and Equipment Selection Recommendations

For different application scenarios, we recommend the following configuration solutions:

For conventional occasions such as building automation, economical products such as GT-V can meet the requirements; while in harsh environments such as petrochemical industries, it is recommended to select the domestic industrial 2088 type pressure transmitter BTL801, whose explosion-proof design and high stability are particularly suitable for hazardous areas.

Diffused silicon sensor technology is still evolving continuously. Through improved packaging processes and intelligent compensation algorithms, the new generation of products is gradually overcoming traditional defects. Only by correctly understanding its characteristics and taking targeted measures can the performance advantages of pressure transmitters such as MBS1900-064G6575 be maximized.

Contact our technical team now to obtain sensor selection solutions and optimization recommendations tailored to your specific working conditions.