Introduction

As a core component of industrial automation control, the FST800-501P341G-400B pressure transmitter uses diffused silicon sensor technology to accurately measure liquid and gas pressure. This tutorial provides a detailed analysis of the installation specifications, commissioning steps, and common troubleshooting methods for this model, helping technical evaluation personnel quickly master the operational essentials of this DG1300-BZ-A-2-4/AF series product and ensuring the accuracy and stability of pressure monitoring in industrial sites.

I. Principles and Performance Advantages of Diffused Silicon Sensor Technology

The FST800-501P341G-400B pressure transmitter adopts diffused silicon piezoresistive sensing technology. By diffusing impurities onto a single-crystal silicon chip to form a Wheatstone bridge, when pressure is applied, the deformation of the silicon diaphragm causes resistance changes, ultimately outputting a standard 4-20mA signal. Compared with traditional capacitive or ceramic sensors, it features high accuracy of ±0.1%FS, long-term stability of 0.01%FS/year, and wide temperature compensation capability from -40~125℃. Xi'an Shenghongchuang Instrument Co., Ltd.'s diffused silicon sensors have passed ISO 9001 quality management system certification, and their core parameters comply with the national standard GB/T 17614.3-2013 for transmitters used in industrial process control systems.

II. Detailed Installation Specifications and Procedures

1.Mechanical installation: When using the M20×1.5 threaded interface, a copper gasket seal is required, and the installation torque should be controlled within the range of 35-45N·m. For products in the same series such as PD50-AB100BM20M4B, vertical installation is recommended to avoid medium deposition affecting measurement accuracy.

2.Electrical connection: The power cable should use shielded twisted pair wire （AWG18-22）, with grounding resistance less than 4Ω. The FST800-501P341G-100B model supports HART protocol communication. During wiring, ensure correct polarity. The typical wiring diagram is as follows:

III. Commissioning Process and Parameter Settings

1.Zero calibration: Under no-pressure conditions, adjust the Zero parameter through the handheld terminal to make the output 4mA. For the JYB-JYB model, special attention should be paid to performing calibration when the medium temperature is stabilized at 25±5℃.

2.Range calibration: Apply full-scale pressure （400Bar） and adjust the Span parameter until the output is 20mA. For low-pressure models such as FST800-501P341G-10B, it is recommended to use a piston pressure gauge as the standard source, with accuracy better than 0.05 class.

IV. Typical Fault Diagnosis and Maintenance

Problem phenomenon: Large output signal fluctuation
Troubleshooting steps:
1. Check whether there are air bubbles or blockage in the pressure guide tube of the JVPL-JVPL16 model
2. Measure whether the power supply voltage fluctuates within the 12-36VDC range
3. Use the TK-509-10 tester to detect sensor impedance （the normal value should be 350Ω±10%）

V. Purchasing Selection Guide and Technical Comparison

For models with special interfaces such as BAR-ZZAZ, the following parameters need to be considered重点:

• Media compatibility: 316L stainless steel diaphragm is suitable for corrosive media
• Overload capacity: The standard overload pressure of the FST800 series is 150%FS
• Certification requirements: The petrochemical industry requires ATEX explosion-proof certification （such as model FST800-211G241I）

VI. Why Choose Xi'an Shenghongchuang

As a national high-tech enterprise, we provide:

1. 72-hour rapid prototype testing service
2. 3-year ultra-long warranty period
3. Free provision of the complete FST800 series selection manual （including technical parameters of more than 200 models such as DG1300-BZ-A-2-4/AF）

VII. Technical Consultation and Support

If you need the complete commissioning video for the FST800-501P341G-400B pressure transmitter or the 3D installation drawing for the PD50-AB100BM20M4B model, please contact our engineering team:
Phone: 029-xxxxxxx
Email: support@xxxxx.com