Analysis of the Core Technology of Diffused Silicon Hysteresis Pressure Sensors

As a key measuring device in the field of industrial automation, the P-P761 pressure transmitter adopts advanced diffused silicon Hysteresis sensing technology, and its core working principle directly affects system accuracy and stability. This article will illustrate the internal structure of the sensor, analyze the installation points of models such as 2000L-L and HP-HP1000, and further discuss the maintenance strategies for models such as PT124B-211, helping engineers quickly master selection and application techniques.

I. Working Principle of the Diffused Silicon Hysteresis Sensor

The core of the diffused silicon Hysteresis pressure sensor lies in the piezoresistive effect on its silicon chip. When pressure acts on the sensor, the silicon diaphragm undergoes slight deformation, causing changes in the resistance value of the embedded Wheatstone bridge, which is converted into a 4～20mA standard signal through a precision circuit. Taking the P-P761 model as an example, it uses 316 stainless steel as the wetted material, with a temperature compensation range of 0～70℃, ensuring a drift accuracy of ±0.05％FS／℃ under medium temperatures of -30～+85℃.

II. Key Points for Installation and Commissioning of Key Models

• 2000L-L model: Attention should be paid to the sealing treatment of the M20×1.5 threaded interface, and the installation torque is recommended to be controlled at 50～60N·m
• HP-HP1000 model: Suitable for 300MPa high-pressure scenarios, it needs to be used with a Gl／2 male threaded pipeline, and after installation, zero point/full scale adjustment of ±20％ is required
• PT124B-211-600MPa model: It is recommended to inspect the diaphragm condition once every 6 months, and the maintenance plan of similar products such as Domestic aviation plug-in pressure transmitter PPM-T127C marine rod-type pressure sensor can be used for reference

III. Comparative Analysis of Technical Parameters

IV. In-Depth Adaptation to Industry Application Scenarios

In the high-temperature and high-pressure environment of the petrochemical industry, the P-P782 model stands out with its stability performance of ±0.1％FS／year; while in building automation systems, the function of KYB-C3 with remote transmission signals can perfectly interface with the BACnet protocol. For special marine scenarios, it is recommended to refer to the IP68 protection design of Domestic aviation plug-in pressure transmitter PPM-T127C.

V. Why Choose Xi'an Shenghongchuang

As a national high-tech enterprise in Xixian New Area, we have 15 years of experience in diffused silicon sensor R&D, and all products have passed ISO9001 certification. We provide customized services for models such as P-P761, including special requirements such as laser marking traceability and integrated LCD display heads, ensuring precise matching in scenarios such as hydraulic control and turbo-generator units.