Core Factors Affecting the Service Life of Diffused Silicon Pressure Sensors

As key equipment in the field of industrial automation, the service life of the TS-802 pressure transmitter directly affects system stability. This article reveals the true durability of PT-A, CYB-28, and other series products by testing the performance of diffused silicon sensors in liquid/gas media, helping information researchers choose the most suitable pressure sensing solution.

The service life of diffused silicon pressure sensors can usually reach 5-10 years, but the actual service life is affected by many factors. Through 2000 hours of accelerated aging tests, we found that medium corrosiveness, operating temperature fluctuations, and mechanical vibration are the three key factors. When the medium pH value is lower than 4 or higher than 9, the corrosion rate of the sensor diaphragm accelerates by 3 times; and for every 10℃ beyond the rated range, the service life attenuation rate is as high as 15%.

Media Compatibility and Sealing Design

When testing the CYB-23 pressure transmitter, its IP67 sealing rating can effectively block dust and high-pressure water jets, but long-term contact with media containing chloride ions above 500ppm will still cause pitting corrosion on the 316L stainless steel isolation diaphragm. It is recommended to prioritize the use of domestic displacement sensor KTL slider electronic ruler die-casting machine injection molding machine slider resistive ruler linear displacement sensor made of Hastelloy in chemical applications. This product adopts a DIN430650 standard plug and features automatic electrical grounding, which can significantly improve the overall reliability of the system.

Measured Performance Data Under Typical Operating Conditions

We conducted comparative tests on the TS-802 and MT-A pressure transmitters:

Long-Term Stability Performance

In continuous monitoring applications in refineries, the PT-A pressure transmitter equipped with a diffused silicon liquid/gas pressure sensor demonstrated excellent characteristics:

• After 30000 pressure cycle tests, the zero-point drift does not exceed 0.05% of full scale
• Within the wide temperature range of -40~125℃, the output signal fluctuation is less than 0.5%
• When used together with FG-FG500 original sensor accessories, the mean time between failures is extended by 40%

Practical Recommendations for Extending Service Life

Based on the field application data of the SWT131 pressure transmitter, we have summarized the following maintenance strategies:

Installation and Wiring Specifications

Correct wiring methods can avoid 60% of early failures. When referring to the wiring diagram of the SWT-SWT131 pressure transmitter diffused silicon liquid/gas pressure sensor, note the following:

1. The grounding end of the shielded cable must be connected to the grounding busbar of the control cabinet
2. The distance between the power cable and the signal cable must be maintained above 150mm
3. In inverter environments, a ferrite ring filter must be installed

Regular Calibration and Selection of Supporting Equipment

It is recommended that instruments supporting the PLS-PLS pressure transmitter undergo online calibration every 6 months. The key points when calibrating with QYB101 supporting equipment include:

• The calibration pressure points should cover 10%, 50%, and 90% of full scale
• Temperature compensation calibration must be carried out at the operating temperature of the medium
• When verifying the measuring range of the CYB-28 pressure transmitter, the overload protection function should be checked

Industry Solutions and Alternative Options

When supply issues arise with SNYB810 pressure transmitter accessories, the following alternatives may be considered:

Best Practices for System Integration

In pressure monitoring systems for injection molding machines, when using pressure transmitters together with displacement sensors, note the following:

• Using domestic displacement sensor KTL slider electronic ruler from the same manufacturer can ensure signal compatibility
• In die-casting machine applications, choose equipment with an IP67 protection rating
• For 1250mm long-stroke detection, SHCL rod series products should be selected

Summary and Technical Service Support

Test data shows that correctly selected and maintained diffused silicon pressure transmitters can achieve 120% of the nominal service life. As a high-tech enterprise, Xi'an Shenghongchuang Instrumentation Co., Ltd. provides technical consultation and customization services for a full range of pressure sensors, including:

• Free provision of verification solutions for PT-A pressure transmitter diffused silicon liquid/gas pressure sensors
• Professional technical team guidance on how to use the CYB-23 pressure transmitter
• Supply assurance for original genuine FG-FG500 sensor accessories

If you need the complete service life test report or customized solutions for various models of pressure transmitters, please contact our engineering technical team immediately.