Analysis of the Core Technology of Diffused Silicon Pressure Transmitters

As the flagship product of Xi'an Shenghongchuang Instrumentation Co., Ltd., TMS-QY110 adopts the diffused silicon piezoresistive sensing principle, achieving precise conversion from pressure to electrical signals through a Wheatstone bridge formed by diffusion on a monocrystalline silicon chip. Its core advantages are reflected in the high accuracy of 0.1%FS and the long-term stability of ±0.5%, making it particularly suitable for harsh working conditions in industries such as petrochemicals and energy and power.

Compared with traditional strain gauge technology, diffused silicon sensors offer better temperature drift characteristics（≤±0.02%/℃）and overload resistance（up to 5 times the measuring range）. The built-in temperature compensation circuit can automatically correct output deviations within the range of -40℃~85℃, ensuring measurement accuracy even in extreme environments. Users can obtain complete compensation curve parameters through the manual download.

Technical Comparison of PTS Series Products

Industrial-Grade Installation and Calibration Specifications

The performance of diffused silicon pressure transmitters is directly related to the installation method. When flange mounting is used, it is recommended to keep the process connection perpendicular to the pipeline axis to avoid mechanical stress affecting the measuring diaphragm. For pulsating pressure applications, a pulse damper should be installed at the front end of the sensor, while ensuring that the pressure guide tube length does not exceed 3 meters to prevent signal delay.

Calibration operations require a standard pressure source with an accuracy grade 3 times higher than that of the device under test, and should be carried out in accordance with GB/T 17614.3-2015. Taking PTS-PTS502 as an example, its calibration steps include: zero calibration（adjusting the 4mA output under no-pressure conditions）, span calibration（applying full-scale pressure to adjust the 20mA output）, and linearity verification（testing at 25%、50%、75% range points）. Domestic displacement sensor NS-WY06 draw-wire displacement sensor cable encoder gate opening meterPrecision instruments of this kind also require regular calibration to maintain measurement accuracy.

Common Fault Diagnosis Guide

• Output signal fluctuation:Check power supply stability（must meet 24VDC±10%）, and eliminate electromagnetic interference（shielded cables are recommended）
• Zero drift:It may be caused by diaphragm deformation due to overload, and zero calibration needs to be performed again
• No output signal:Verify the polarity of the wiring terminals（the BP-IN model uses a two-wire 4-20mA loop）
• Abnormal display value:Check whether the input range setting of the AO-X display module matches

Application Solutions for Multiple Scenarios

In hydraulic system monitoring, the YH-A model can achieve real-time closed-loop control of pump station pressure with its ultra-high accuracy of 0.05%FS; for vibration pressure measurement of compressor units, the 1000Hz response frequency of ZFBY-ZFBY3801 can accurately capture pressure pulsations. For different media characteristics, Shenghongchuang provides a variety of wetted material options such as 316L stainless steel and Hastelloy alloy.

When used together with a displacement monitoring system, TMS-GH186 can form a complete mechanical motion monitoring network with a draw-wire sensor. This combined solution performs outstandingly in the field of gate opening control, as it can not only monitor hydraulic drive pressure, but also accurately feed back gate position, forming a dual-redundancy safety protection mechanism.

Technical Expansion and Maintenance Recommendations

Regular maintenance should include: checking seal aging conditions every 6 months（especially fluororubber materials）, and conducting annual explosion-proof certification reinspection（applicable to Ex d IIC T6 explosion-proof models）. During storage, ambient humidity should be maintained at ≤85%RH, and for long-term idleness, power-on testing should be carried out every 3 months. Shenghongchuang provides free manual download services, including key information such as complete wiring diagrams and fault code tables.

For applications requiring ultra-high-precision measurement, it is recommended to choose smart transmitters with the HART communication protocol, which can be remotely configured through a handheld terminal. The new generation of products already supports the IO-Link interface and can be directly integrated into Industry 4.0 systems to achieve predictive maintenance functions.

Conclusion

As professional equipment in the field of pressure measurement, the correct selection and use of diffused silicon pressure transmitters directly affect the reliability of industrial automation systems. Xi'an Shenghongchuang Instrumentation Co., Ltd. continuously optimizes the performance of PTS series products, providing full life cycle services from selection consultation to after-sales maintenance. Download the complete technical documentation now, or contact our engineering team for customized solutions.