Analysis of the Core Parameters of Diffused Silicon Hessman Pressure Sensors

The PT-507 pressure transmitter adopts diffused silicon Hessman sensor technology, and its measurement range selection directly affects the accuracy of pressure monitoring in industrial sites. This article provides an in-depth analysis of the application points of models such as the YM series and YD-322 under different working conditions, covering key technical parameters such as accuracy grade and troubleshooting, to help technical evaluators optimize selection solutions.

As the core component of industrial pressure measurement, the performance of the diffused silicon Hessman sensor is closely related to the measurement range. Taking the YM-130 pressure transmitter as an example, its specification model directly determines the applicable working conditions: the 0.6MPa至2.5MPa range is suitable for conventional hydraulic systems, while the 100MPa high-range version is suitable for high-pressure scenarios such as petroleum drilling. During technical evaluation, focus should be placed on three points: medium temperature adaptability（-40℃~400℃）, overload capacity（usually up to 2 times the range）and accuracy grade（0.1%~0.5%）.

Typical Application Scenarios and Selection Matching

In the aerospace field, the 316L stainless steel material of the YM-1XH pressure transmitter can withstand high-temperature oxidation of hydraulic oil; in the chemical industry, attention should be paid to the corrosion resistance of the YD-322 model, whose Hessman connector connection method can effectively prevent leakage of acid and alkali media. Under special working conditions, such as clean environments in the pharmaceutical industry, it is recommended to choose the domestic general-purpose pressure transmitter NTYL hydraulic oil pressure pneumatic pressure sensor with direct cable output connection to avoid dust accumulation and contamination at the interface.

Key Points of Accuracy Calibration and Fault Diagnosis

According to the GB/T 17614-2015 standard, the calibration of the YM-1QQ pressure transmitter must be carried out within the compensated temperature range. Common problems such as abnormal display of the MBS-G3131 model are mostly caused by wiring errors——the wiring diagram of the YM-109 pressure transmitter should be strictly followed to ensure that the PIN pins of the Hessman connector match the signal wires. When the YM-115 shows zero drift, forced zero calibration can be carried out according to the manual.

• Accuracy verification: use a standard pressure source to compare the output signal（4-20mA deviation ≤±0.1%）
• Temperature compensation: test linearity changes in an environment of -20℃~80℃
• Sealing inspection: apply 1.5 times the rated pressure to the G1/4 interface for a pressure-holding test

Signal Processing and System Integration Solutions

The working principle of the diffused silicon Hessman pressure sensor is based on the piezoresistive effect, and the 4-20mA output signals of models such as YM-1KGR need to be matched with a 250Ω sampling resistor. In DCS system integration, it is recommended to set the electrical connection method of PT-507 as the priority: aviation plug＞waterproof connector＞direct cable output. For metallurgical workshops with electromagnetic interference, the domestic general-purpose pressure transmitter NTYL series with EMC protection should be selected.

Summary and Selection Recommendations

When selecting a diffused silicon Hessman pressure transmitter, it is necessary to comprehensively evaluate the three major factors of measurement range, medium compatibility, and environmental adaptability. As a high-tech enterprise, Xi'an Shenghongchuang Instrumentation Co., Ltd.'s YM series products have passed ISO9001 certification and have more than 200 successful cases in industries such as petroleum and electric power. To obtain a customized selection solution, please contact our technical team for one-to-one working condition analysis.