What Is the Working Principle of the KE-240X-250BG5B Diffused Silicon Pressure Sensor？One Diagram Answers All Questions！

Are you confused about the working principle of the KE-240X-250BG5B diffused silicon pressure sensor？This article will use diagrams to explain the core principle of diffused silicon pressure sensors in a clear and accessible way，while also covering the technical features，installation methods，and selection essentials of models such as DG1300-PJ-1-2-10/AAZN and LABO-RT-INS，helping you quickly master the key knowledge of pressure transmitters and improve work efficiency！

1、Core Principle of Diffused Silicon Pressure Sensors

The core of diffused silicon pressure sensors（such as KE-240X-250BG5B，DG1300-PJ-1-2-10/AAZN，and other models）lies in the piezoresistive effect of their silicon diaphragm. When external pressure acts on the sensor，the silicon diaphragm undergoes slight deformation，causing the resistance values of the Wheatstone bridge embedded in the diaphragm to change. This change is converted by precision circuitry into a standard electrical signal（such as 4~20mA or 0~10V），ultimately achieving accurate measurement of the pressure value.

Taking KE-240X-250BG5B as an example，it uses monocrystalline silicon material and forms four pressure-sensitive resistors through ion implantation technology，creating a full-bridge circuit. Compared with traditional strain gauge sensors，diffused silicon technology offers higher sensitivity（up to 0.1%FS）and temperature stability（error less than ±0.5% within the -20℃~120℃ range）.

2、Comparison of Technical Parameters of Mainstream Models

It is worth noting that model 506.932A-A03101 uses a special ceramic isolation diaphragm，which can withstand strong acid and alkali media with PH values from 2~12；while P200S-GB160CG14M4B is ATEX certified and suitable for explosive gas environments.

3、Key Points for Installation and Commissioning

For the installation of models such as YM2200-M1410V160B and DJ-DJ1300，special attention should be paid to：

• Mechanical Installation：When using the matching flange of PTX-PTX5072，the torque should be controlled at 20~30N·m to avoid diaphragm deformation caused by overtightening
• Electrical Connection：SMP131-S4M2FY4A2DCZ requires the shielded cable length not to exceed 50 meters，and it must be grounded separately
• Media Compatibility：When measuring viscous media，it is recommended to select the flush diaphragm structure of model MBC-STK333

During the commissioning stage，zero/span calibration of DG1300-PJ-1-2-10/AAZN can be performed via the HART protocol. If measuring gas pressure，pre-venting must be carried out at the vent valve of KE-240X-250BG5B.

4、Synergistic Application of Displacement Measurement Technology

Under complex operating conditions，pressure sensors often need to be used together with displacement sensors. For example，Domestic Displacement Sensor WYDC-450MM Differential Pull-Rod Linear Displacement Sensor Spring-Return Inductive Sensor，which adopts the differential transformer principle，can synchronously monitor mechanical displacement changes under pressure（with measurement accuracy reaching several μm），and is especially suitable for hydraulic cylinder position feedback systems.

This displacement sensor has a wide operating temperature range of -20℃~120℃，with optional output signals of ±5V or 4~20mA. Together with the KE-240X-250BG5B pressure transmitter，it forms a complete measurement chain and delivers excellent performance in scenarios such as wind turbine pitch systems and mold-clamping control of injection molding machines.

5、Maintenance and Troubleshooting

For common issues of diffused silicon sensors such as LABO-RT-INS：

1. Zero Drift：Check whether there is leakage at the process connection，or whether crystallized media has caused blockage（can be flushed with 5% dilute hydrochloric acid）
2. Output Fluctuation：Confirm that the power supply voltage is stable（12~24VDC fluctuation not exceeding ±5%）
3. Diaphragm Damage：If SMP131-S4M2FY4A2DCZ measures above 150% of the range，the sensor core needs to be replaced

It is recommended to replace the sealing rings of sensors in critical positions such as P200S-GB160CG14M4B every 6 months，and use the PTX5072 dedicated test fixture for performance verification.

Summary and Selection Recommendations

When selecting a diffused silicon pressure sensor，it is necessary to comprehensively consider media characteristics（such as corrosiveness and viscosity），environmental conditions（temperature，vibration），and output requirements（analog/digital signals）. KE-240X-250BG5B is suitable for conventional industrial hydraulic systems，while DG1300-PJ-1-2-10/AAZN is more suitable for precision laboratory scenarios.

If you need to build a complete measurement system，it can be paired with Domestic Displacement Sensor WYDC-450MM Differential Pull-Rod Linear Displacement Sensor Spring-Return Inductive Sensor to achieve multidimensional data acquisition. Welcome to contact our technical team for customized solutions，and we will provide you with full-process support from selection to commissioning！