Technical Principles and Core Advantages of Diffused Silicon Hyman Pressure Sensors

The Hyman sensor used in the DG1300 series pressure transmitters is based on semiconductor piezoresistive effect technology. When external pressure acts on the silicon diaphragm, the resistance value of the Wheatstone bridge changes linearly with deformation, and a standard 4-20mA or 0-10V signal is output through the signal conditioning circuit. Compared with traditional strain gauge sensors, models such as P-P964 and P-P972 deliver high accuracy of 0.05%FS, with an operating temperature range of up to -40℃~125℃, making them particularly suitable for harsh working conditions in petroleum, natural gas, chemical, and metallurgical industries.

The three core advantages of this technology are: first, laser trimming technology is used to achieve zero/span compensation, ensuring the long-term stability of models such as P-P981; second, the 316L stainless steel isolation diaphragm design gives the DG1300-BZ-A-0.4/CJ/AE/FZ/W model excellent media compatibility; third, the built-in temperature sensor can compensate thermal drift in real time, which is also the key reason why model 064G-G6532 is widely praised in the thermal power and papermaking industries.

Analysis of Typical Application Scenarios

• Process Industry: In reactor pressure monitoring in the pharmaceutical industry, the ±0.1% accuracy of model MBS1900 can meet GMP certification requirements
• Energy Sector: The vibration-resistant design of model BP-A makes it the preferred choice for wind power hydraulic systems
• Intelligent Equipment: The CAN bus output feature of model M5156-000005-016BG is suitable for automated production lines

It is worth noting that in scenarios where both pressure and weighing need to be measured simultaneously, it can be used together with Domestic Weighing Sensor RSB05 Bellows Weighing Force Sensor, whose ±0.02% overall accuracy forms a complementary advantage with diffused silicon technology.

Five Key Indicators for Selecting Diffused Silicon Pressure Transmitters

For vibration environments such as construction machinery, it is recommended to choose model P-P962 with an M12 aviation plug, whose IP67 protection rating is more reliable than conventional models. If a batching weighing system is involved, you may refer to the strain compensation technical solution of the RSB05 sensor.

Common Problem Solutions

Signal Interference Handling

When signal fluctuation occurs in the DG1300-BZ series, first check whether the power supply is stable (it is recommended to use a voltage stabilizer), and then confirm whether the cable uses twisted shielded pair wire (such as Belden 8761). For frequency converter interference, a magnetic ring filter can be added to model P-P972.

Zero Drift Correction

1. Disconnect the pressure port and ensure it is vented to atmosphere
2. Send the zero calibration command through the HART communicator
3. Save the parameters after the LED indicator stops flashing

If drift occurs frequently, it is necessary to check whether the sealing ring has aged (it is recommended to replace it once every 2 years), which is similar to the maintenance strategy of the bellows sensor in weighing systems.

Verification Through Industry Application Cases

In the blast furnace blower system of a certain steel group, after using 20 DG1300-AE models to replace the original capacitive transmitters:

• The maintenance cycle was extended from 3 months to 18 months
• Pressure control accuracy was improved to ±0.05MPa
• Annual maintenance costs were reduced by 470,000 yuan

Similarly, in an electronic truck scale retrofit project, after using a diffused silicon pressure sensor together with an RSB05 weighing unit, the overall system error was reduced from 0.05% to 0.02%, fully complying with the GB/T7723-2017 standard.

Professional Purchasing and Usage Recommendations

It is recommended to ensure genuine product procurement through the following channels:

1. Official authorized distributors (dealer code can be verified)
2. Request factory inspection reports and metrology certificates
3. Verify the product serial number against the registration information on the official website

As a leading sensor manufacturer in Northwest China, Xi'an Shenghongchuang Instrumentation Co., Ltd.'s DG1300 series has passed ISO9001:2015 quality management system certification, and all products come with an extra-long 18-month warranty. If you need customized solutions or technical parameter manuals, please feel free to contact our engineering support team.