HG-S3 Pressure Transmitter User Guide：How to Properly Install and Commission Diffused Silicon Sensors

As a representative product of diffused silicon sensors，the installation and commissioning of the HG-S3 pressure transmitter directly affect measurement accuracy。This article is intended for users of models such as PT124B and FST800，and provides a detailed analysis of the advantages and disadvantages，installation steps，and commissioning techniques of diffused silicon pressure sensors，helping operators quickly master the correct use methods of transmitters such as PT-PT300 and SY-PG1300，and solve practical purchasing questions such as ‘which one is better’‘how much does it cost’。

1、Analysis of the Advantages and Disadvantages of Diffused Silicon Pressure Sensors

Diffused silicon pressure sensors are widely used in industrial fields due to their advantages such as high accuracy and good stability。Taking the PT124B-210-100MPa-NPT1/4 pressure transmitter as an example，its core advantages include：measurement accuracy up to Class 0.25，temperature drift controlled within ±0.05%FS/℃，and 316 stainless steel material suitable for corrosive media。However，there are also some limitations，such as relatively high requirements for the installation position and relatively limited overload capacity（generally 2 times the full scale）。

Compared with traditional piezoresistive sensors，diffused silicon models such as BFY-1103 deliver outstanding performance in sensitivity（rise time ≤5 ms）and long-term stability（±0.1%FS/year）。However，users should note that the DG1300 series may require additional protective measures in extreme temperature environments（below -30℃ or above 85℃）。

2、Installation Specifications and Technical Key Points

The correct installation method directly affects the measurement accuracy of models such as HM13-10-250：1）threaded ports（NPT1/4 or ZG1/2）should use sealing tape，with torque controlled at 15-20N·m；2）for liquid media measurement，vertical installation is recommended to avoid bubble accumulation；3）in vibration environments，shock-absorbing brackets should be added。Special reminder：high-pressure models such as PT124B-212-5MPa-ZG1/2 require a 24-hour aging test after installation。

3、Commissioning Process and Common Troubleshooting

When commissioning models such as PT-PT300，the following steps should be followed：1）power on and warm up for 30 minutes；2）use a standard pressure source for three-point calibration（0%、50%、100% range）；3）adjust zero point and full scale through potentiometers（ranges ±8% and ±20%）。Among common faults，abnormal output signals are mostly caused by wiring errors（for two-wire systems，the positive power terminal and signal line must be strictly distinguished），while the modular design of the domestic general-purpose pressure transmitter PTX600 constant-pressure water supply absolute pressure sensor can greatly reduce commissioning difficulty。

For complex models such as DG1300-PJ-1-2-40/CJ/GK/GZ，it is recommended to：1）regularly check the condition of the sealing ring（replace annually）；2）ensure that the IP65 protection rating remains effective in humid environments；3）reserve a 20% margin when selecting the range（for example，select a 1.6MPa range for measuring 1MPa）。

4、Selection Guide and Cost Analysis

When purchasing，the following factors should be considered comprehensively：1）media characteristics（select 316 stainless steel for corrosive media）；2）accuracy requirements（Class 0.5 is sufficient for process control，while Class 0.25 is required for calibration）；3）output signal（two-wire 4-20mA is more suitable for remote transmission）。In terms of price，the basic FST800 model is approximately 800-1200 yuan，while high-accuracy models such as HM13-10-250 can exceed 3000 yuan。For projects with limited budgets，the domestic general-purpose pressure transmitter PTX600 series can be considered，as it combines Class 0.25 accuracy with IP67 protection，offering outstanding cost performance。

5、Technical Consultation and Service Support

We provide selection support and commissioning guidance for the full range of pressure transmitters。Whether it is special operating condition adaptation for BFY-1103 or bulk procurement solutions for the PT124B series，customized services are available。Our engineering team holds ASME B40.9 certification and can assist users in completing full-process management from installation and commissioning to periodic maintenance。