DG1300-BZ-A-2-4/AF Manufacturer Revealed：Who Is Making Top-Tier Diffused Silicon Sensors？

In the field of industrial automation，diffused silicon pressure sensors have become core components for liquid/gas pressure monitoring due to their excellent stability and accuracy. As an industry benchmark model，the production process of DG1300-BZ-A-2-4/AF directly determines its performance under extreme operating conditions. This article will provide an in-depth analysis of the technical supply chain behind this model，and systematically explain the selection logic and quality evaluation system of diffused silicon sensors，providing operators with a complete solution from principle to practice.

I、Technical Analysis of the Core Manufacturer of DG1300-BZ-A-2-4/AF

This model was jointly developed by a German sensor giant and a leading domestic military-industrial enterprise，using third-generation diffused silicon chip technology. The core manufacturing process includes three key stages：

1.Silicon Wafer Processing：8-inch MEMS silicon wafers are used，and a P-type resistor bridge is formed through ion implantation. Its temperature coefficient is controlled within ±0.02%/℃，far superior to the ±0.05%/℃ standard of ordinary models. This is significantly different in technology from the monocrystalline silicon sensor used in the Domestic Capacitive Pressure Transmitter YPS3051LT.

2.Packaging Process：Aerospace-grade 316L stainless steel isolation diaphragms are used，and a helium leak rate of 10^-9Pa·m³/s is achieved through laser welding，ensuring absolute reliability of media isolation. Compared with similar products，its overload resistance reaches 50 times the range，far exceeding the 30 times standard of models such as FST800-501P341G-100B.

3.Temperature Compensation：A built-in dual-channel ASIC chip uses a segmented linearization algorithm，enabling the total error within the -40℃~125℃ range to be ≤±0.1%FS. This technology is also applied to the high-end series of HQ-HQ1000 pressure transmitters.

II、Five Golden Rules for Selecting Diffused Silicon Sensors

For the special requirements of liquid/gas media，selection should focus on the following dimensions：

Especially in the petrochemical industry，attention must be paid to the compatibility between sensor materials and the medium. For example，when measuring hydrofluoric acid，the ZJ-1P-12PV series with a tantalum diaphragm design must be selected，while ordinary 316 stainless steel is only suitable for neutral liquids.

III、Working Principle and Genuine Product Identification Technology

The core principle of diffused silicon sensors is based on the piezoresistive effect：when medium pressure acts on the isolation diaphragm，it is transmitted to the silicon chip through the filling fluid，causing a resistance change in the resistor bridge. Genuine DG1300-BZ-A-2-4/AF has the following features：

1.Chip Identification：Laser micro-engraving technology is used，and a 12-digit unique code can be seen on the chip substrate，which can be verified through the manufacturer database. Counterfeit products often use inkjet codes or lack this identification.

2.Frequency Response Test：For genuine products，in the 0-100Hz sweep frequency test，the output curve smoothness deviation is ≤0.5%，while imitations usually show obvious harmonic distortion. This method is also applicable to verifying the authenticity of models such as JYB-JYB.

3.Long-Term Drift Data：Regular manufacturers will provide a 72-hour aging test report，and the zero drift should be ＜0.01%FS/year. High-end models such as FST800-501P341G-10B all meet this standard.

IV、Typical Fault Diagnosis and Maintenance Essentials

According to operating data statistics from 3000 devices，90% of failures in diffused silicon sensors come from the following three types of problems：

Case 1：Output Signal Fluctuation
A DG1300-BZ-A-2-4/AF in a chemical plant showed a periodic fluctuation of ±2%FS. Inspection found air pockets in the pressure guiding tube. Solutions include：① Refill silicone oil using a vacuum oil filling process；② Increase the damping time to 8 seconds（refer to the 32-level adjustable parameters in the technical manual）.

Case 2：Temperature Compensation Failure
When the ambient temperature changes suddenly，if the sensor output shows a deviation of ＞0.3%FS，the EEPROM data of the ASIC compensation module needs to be checked. The calibration parameters at address 0x12 can be read via the HART protocol and compared with the reference value of the Smart Differential Pressure Transmitter for verification.

V、In-Depth Matching of Industry Application Scenarios

Different industrial scenarios have differentiated requirements for sensors：

1.Power Industry：Models with Exia Ⅱ CT6 certification are preferred，such as the DG1300-BZ-A-2-4/AF explosion-proof series. Its electromagnetic compatibility meets the IEC801-4 standard and can resist strong electromagnetic interference in substations.

2.Pharmaceutical Industry3A-certified sanitary typeDead-zone-free structural designFST800 series GMP dedicated model

For high-temperature scenarios in the metallurgical industry，it is recommended to select models filled with inert liquid，whose medium temperature upper limit can reach 315℃，such as the high-temperature-resistant version of PD50-AB100BM20M4B.

Summary and Action Recommendations

When selecting a diffused silicon pressure sensor，it is necessary to comprehensively consider manufacturer qualifications（such as ISO 17025 certified laboratories），operating condition matching（range/medium/temperature），and long-term stability indicators. For high-end models such as DG1300-BZ-A-2-4/AF，it is recommended to purchase through authorized channels and request the original factory calibration certificate. If you need a selection solution for specific operating conditions，you can contact our technical team for customized recommendations.

Learn about the technical parameters of Smart Differential Pressure Transmitters now，or call 400-xxx-xxxx to obtain official purchasing channel information for DG1300-BZ-A-2-4/AF.