Analysis of the Technical Advantages of Diffused Silicon Sensors

In the field of industrial automation, the PTS-PTS504 pressure transmitter has become an industry benchmark thanks to the outstanding performance of its diffused silicon sensor. This article provides an in-depth analysis of its price structure and technical advantages, and explores why diffused silicon sensors have become the preferred solution for liquid and gas pressure measurement, helping you make informed purchasing decisions.

Diffused silicon pressure sensors use the piezoresistive effect principle of semiconductor silicon materials, forming a Wheatstone bridge structure on the silicon chip surface through ion implantation technology. When external pressure is applied, the resistance values of the bridge arms change slightly, and a standard 4-20mA signal is output through the signal conditioning circuit. Compared with traditional strain gauge technology, its sensitivity is increased by more than 50 times, and temperature drift can be controlled within the range of ±0.05%FS/℃, which explains why high-end products such as domestic general-purpose pressure transmitter ZFBY3801 all adopt this technical solution.

Comparison of Core Performance Indicators

Price Components of PTS Series Transmitters

The market price of the PTS-PTS504 pressure transmitter usually fluctuates within the range of 2000-5000 yuan, mainly affected by the following factors:

• Sensor grade: products with 0.25 class accuracy are 30-50% more expensive than 1.0 class products
• Housing material: the cost of a 316 stainless steel housing is 15-20% higher than 304
• Certification standard: models certified with ATEX explosion-proof certification command a premium of more than 25%
• Output signal: digital output with HART protocol is 10-15% more expensive than analog signals

It is worth noting that the PTS-PTS503 pressure transmitter in the same series, due to its wider measuring range coverage (0-250MPa), is usually priced 8-12% higher than the PTS504. Meanwhile, although the TMS-GH186 pressure transmitter using ceramic piezoresistive technology has an initial procurement cost 20% lower, its long-term maintenance cost is actually higher.

Cost Analysis of Typical Application Scenarios

Under high-temperature and high-pressure operating conditions in the petrochemical industry, the average annual operating cost (including maintenance) of the PTS-PTS502 pressure transmitter is about 3800 yuan, while that of traditional products is as high as 5500 yuan. This is mainly due to the 5-year calibration-free characteristic of the diffused silicon sensor, which greatly reduces downtime losses.

Calibration and Maintenance of Diffused Silicon Sensors

The correct calibration process directly affects the measurement accuracy of the PTS-PTS501 pressure transmitter. It is recommended to follow the steps below:

1. Connect the standard pressure source and precision ammeter
2. Apply standard pressure at 0%, 25%, 50%, 75%, and 100% range points
3. Adjust the zero point and span potentiometers through the HART communicator
4. Repeat the cycle three times to ensure nonlinearity error is ＜0.1%

When the AO-X pressure transmitter displays abnormalities, first check whether the power supply voltage is stable (24VDC±5%), and then check whether the impulse tube is blocked. The typical troubleshooting time of diffused silicon sensors is 40% shorter than that of strain gauge technology, thanks to their modular design.

Industry Solutions and Selection Recommendations

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

• Hydraulic systems: choose the YH-A pressure transmitter, configured with a diffused silicon core featuring a 1ms response time
• Constant-pressure water supply: BP-IN pressure transmitter with IP68 protection rating, with range coverage of 0-2.5MPa
• Laboratory calibration: TMS-QY110 pressure transmitter equipped with a 0.05 class reference sensor

Especially in the field of building automation, the compact integrated LCD design of the ZFBY3801 pressure transmitter can save 30% of installation space, and its medium temperature range of -30～+85℃ fully meets HVAC system requirements.

Summary and Professional Recommendations

With its high accuracy, low drift, and long service life, the diffused silicon pressure sensor has become a mainstream choice for industrial measurement. As shown by the analysis in this article, the price differences among PTS series transmitters are mainly reflected in performance parameters and material selection, and it is recommended to evaluate cost performance based on actual operating condition requirements.

As a national high-tech enterprise, Xi'an Shenghongchuang Instrumentation Co., Ltd. produces pressure transmitters that have passed ISO9001 quality management system certification and can provide customers with customized pressure measurement solutions. If you need detailed technical specifications or on-site trial use of the PTS-PTS504 pressure transmitter, please feel free to contact our engineering technical team.