Working Principle and Selection Key Points of Diffused Silicon Hirschmann Pressure Sensors

As a core component in the field of industrial measurement, the working principle of the diffused silicon Hirschmann pressure sensor is based on the piezoresistive effect. When external pressure acts on the sensor diaphragm, the resistivity of the silicon crystal changes and is converted into an electrical signal output through a Wheatstone bridge. Models such as CS-PT300 and PT-PT202 all adopt this technical approach, among which the TY-804 pressure transmitter further achieves high-accuracy compensation of ±0.1%FS through laser trimming technology.

In harsh environments such as petrochemical industries, it is recommended to give priority to products such as Domestic Liquid Level Transmitter JT-802 LCD Display Explosion-proof Liquid Level Sensor with an IP65 protection rating. Its 316L stainless steel material and三级 lightning protection module design can effectively cope with highly corrosive media and electromagnetic interference.

Interpretation of Key Parameters

• Measurement Range: The JPB-JPB2300 model supports a wide range coverage of 0-100MPa
• Temperature Characteristics: The compensated temperature of YB-YB3011 reaches -40~125℃
• Long-term Stability: The annual drift of the TS-802 series is ≤±0.2%FS

Installation Specifications and Wiring Diagram

The threaded installation of the SWT-SWT131 pressure transmitter must comply with the GB/T7306 standard, while flange installation requires attention to the pressure rating of the sealing gasket. In turbine monitoring systems of power plants, it is recommended to use the 1/2NPT threaded connection of the CYB-28 model, whose mechanical vibration resistance reaches 20g（20-5000Hz）.

Typical Wiring Scheme

Commissioning Process and Fault Diagnosis

Calibration of the PT-A pressure transmitter requires a Class 0.05 standard pressure source, and zero/span calibration shall be carried out according to JJG882-2019. When abnormal output occurs in the YB-YB3011 sensor, troubleshooting can be performed according to the following steps:

1. Check whether the supply voltage is stable at 24VDC±10%
2. Measure loop impedance（normally it should be 250-750Ω）
3. Use a megohmmeter to test the insulation resistance of the sensor

Maintenance and Service Life Extension Strategies

The average service life of the MT-A pressure sensor can reach 8 years, but attention should be paid to the following:

• Check monthly whether the pressure guide tube is blocked
• Conduct zero drift testing quarterly
• Avoid diaphragm damage caused by medium crystallization

For scenarios prone to scaling such as wastewater treatment, it is recommended to choose the anti-clogging design of Domestic Liquid Level Transmitter JT-802. Its polyurethane cable and fully sealed structure can significantly reduce maintenance frequency.

Industry Application Solutions

In the field of hydropower construction, the combined use of CS-PT300 and TS-802 can achieve a dam uplift pressure monitoring system error of ≤0.3%FS. For liquid level measurement in petroleum storage tanks, it is necessary to combine the high-precision characteristics of JPB-JPB2300 with explosion-proof certification requirements.

Technical Summary and Service Support

As a national high-tech enterprise, Xi'an Shenghongchuang Instrumentation Co., Ltd. provides full-process technical support from sensor selection to system integration. Our engineering team can customize solutions for your pressure measurement challenges. Contact us now to obtain your exclusive solution.