When purchasing JYB pressure transmitters, how to distinguish genuine diffused silicon sensors has become a core pain point for technical evaluators. This article focuses on key models such as DG1300-BZ-A-2-4/AF and the FST800 series, and reveals 3 core identification techniques from sensor principles, manufacturing processes to application scenarios, helping you accurately identify high-quality diffused silicon pressure transmitter suppliers.

Technical Principles and Core Advantages of Diffused Silicon Pressure Sensors

As a mainstream technology in the industrial measurement field, the core of diffused silicon pressure sensors lies in the piezoresistive effect of monocrystalline silicon materials. When sensors of models such as DG1300-BZ-A-2-4/AF are subjected to pressure, the silicon diaphragm undergoes slight deformation, causing changes in the resistance value of the embedded Wheatstone bridge, and the signal is amplified and converted into a standard 4-20mA output through transmitter circuits such as FST800-501P341G-100B. Compared with traditional ceramic or metal strain gauge technologies, diffused silicon sensors feature the high accuracy of ±0.1%FS, the stability of 100,000 impact cycles service life, and the wide temperature range adaptability of -40℃~125℃, which is the fundamental reason why the PD50-AB100BM20M4B model is widely favored in the petrochemical field.

Three Technical Dimensions for Genuine Product Identification

Dimension 1: Material and Process Verification

Authentic JYB-JYB pressure transmitters use semiconductor-grade monocrystalline silicon wafers, with pressure-sensitive resistors formed through ion implantation processes. Technical evaluators can verify this in the following ways: require suppliers to provide wafer batch inspection reports, and check whether the FST800-211G241I model uses large wafers of 6 inches or above (to reduce edge effects); observe the laser trimming traces of the TK-509-10 pressure transmitter, as genuine products will undergo temperature compensation trimming before packaging. As a manufacturer with ISO 9001 certification, Xi'an Shenghongchuang uses coating equipment from Germany's Kurt J.Lesker for all diffused silicon sensors, ensuring the thickness control of the medium isolation layer reaches the industry's top level of 0.2μm±5%.

Dimension 2: Key Performance Testing

For key models such as BAR-ZZAZ pressure transmitters, it is recommended to carry out three practical tests:

• Zero-point temperature drift test: under environments of 0℃ and 50℃, the zero-point drift of FST800-501P341G-10B should be ≤±0.5%FS/10K
• Long-term stability test: after the JVPL-JVPL16 pressure transmitter works continuously for 500 hours, the signal fluctuation should be <±0.1%
• Overload destruction test: the TK-509-10 model should withstand at least 3 impacts of 150% rated pressure without leakage

These data directly reflect the core quality of diffused silicon sensors, and regular manufacturers such as Xi'an Shenghongchuang will provide third-party CNAS-certified test reports.

Dimension 3: Application Scenario Matching

Different models of diffused silicon sensors are optimized for specific media:

During technical evaluation, it is necessary to verify whether the bill of materials (BOM) is consistent with the claims, for example, whether the FST800 series claimed for food-grade applications truly uses USP Class VI silicone oil filling.

Analysis of Typical Industry Procurement Misunderstandings

In the field of flow control equipment, technical evaluators often fall into two cognitive traps: one is the excessive pursuit of low prices, leading to the purchase of counterfeit and inferior products that use doped silicon instead of monocrystalline silicon, and this type of FST800-211G241I pressure transmitter will experience signal jumps after 3-6 months of use; the other is neglecting medium compatibility, for example, a chemical plant once mistakenly used the ordinary JVPL16 for chlorine measurement, resulting in diaphragm corrosion perforation. Xi'an Shenghongchuang recommends using the life cycle cost (LCC) evaluation method. Although genuine diffused silicon sensors are 20%-30% higher in unit price, their 5-year maintenance costs can be reduced by more than 60%.

Why Choose Xi'an Shenghongchuang

As a high-tech enterprise in a national-level new district, we provide:

1. 12 years of dedicated research experience in diffused silicon sensors, and all JYB pressure transmitters have passed SIL2 functional safety certification
2. 72-hour rapid prototype service, supporting customized development for models such as DG1300-BZ-A-2-4/AF
3. Industry-leading 5-year warranty, covering the medium compatibility commitment of the entire FST800 series products

Contact our technical consultants immediately to obtain the "White Paper on Diffused Silicon Sensor Selection", or schedule an on-site pressure calibration demonstration, contact number: 029-XXXXXXX.