Xi'an Shenghongchuang Professional Field Test Report：P-P981 Diffused Silicon Pressure Sensor 1000-Hour Continuous Operation Stability Data

Xi'an Shenghongchuang Professional Field Test Report：P-P981 Diffused Silicon Pressure Sensor 1000-Hour Continuous Operation Stability Data Released！As a manufacturer of diffused silicon liquid and gas pressure sensors，we verified the excellent performance of the P-P981 pressure transmitter through rigorous testing。This article will provide a detailed analysis of the operating principle，selection key points，and quality performance of this sensor model，helping you purchase genuine diffused silicon pressure sensors。

I、Operating Principle of the P-P981 Diffused Silicon Pressure Sensor

The diffused silicon pressure sensor adopts the piezoresistive effect principle of semiconductor silicon material。When external pressure acts on the sensing element，the silicon diaphragm deforms，causing its resistance value to change。The P-P981 model converts resistance changes into standard electrical signal output through a precision Wheatstone bridge，featuring fast response speed and high accuracy。Its core component uses an imported diffused silicon chip，combined with a 316L stainless steel isolation diaphragm，enabling stable measurement of pressure values of media such as gases and liquids。

Compared with traditional strain-gauge sensors，the sensitivity of the P-P981 is improved by approximately 30%，and temperature drift is controlled within ±0.02%FS/℃。In harsh environments such as petrochemical and pharmaceutical applications，its fully welded structural design can effectively prevent media leakage，and the IP65 protection rating meets the requirements of most industrial scenarios。

II、1000-Hour Continuous Operation Stability Test Data

We simulated an industrial environment in a constant-temperature laboratory and conducted a 42-day continuous stability test on the P-P981：

The test results show that after 1000 hours of continuous operation，the key performance parameters of the P-P981 still exceed the requirements of the industry standard GB/T 15478-2015。Its stability performance is especially suitable for fields requiring long-term monitoring，such as energy and environmental protection。When used together with the Domestic Weighing Sensor CXH-103 Spoke-Type Force Sensor，it can build a highly reliable measurement system。

III、Selection Guide for Diffused Silicon Pressure Sensors

When purchasing a diffused silicon pressure sensor，focus on the following parameters：

1. Range selection：The P-P981 series provides multiple ranges from 0-10kPa to 0-60MPa。It is recommended to select a model where the actual working pressure falls within 30%-70% of the range。For example，when measuring a 5MPa system pressure，a 0-10MPa model offers better linearity than a 0-6MPa model。

2. Output signal：The standard 4-20mA output is suitable for long-distance transmission，while RS485 digital output facilitates system integration。Models such as P-P764 also support the HART protocol，making on-site commissioning easier。

3. Media compatibility：Corrosive media require a Hastelloy diaphragm，while ordinary water/oil media can use 316L stainless steel。The P-P962 is specially designed with a hygienic structure and complies with the 3A standard for the pharmaceutical industry。

IV、How to Identify Genuine Diffused Silicon Sensors

There are counterfeit products of models such as P-P981 on the market，and consumers can identify them through the following methods：

•Check laser marking：Genuine sensor housings have a unique serial number that can be verified through the official website• Test zero-point stability：The zero-point drift of genuine products does not exceed ±0.05%FS after power-off and restart• Check certification marks：Certifications such as CE and RoHS must provide corresponding certificate numbers• Compare weight：Counterfeit products often use inferior materials，and the overall weight is 15%-20% lighter than genuine products

As a manufacturer of series such as P-P972，Xi'an Shenghongchuang conducts a 72-hour aging test on all products before shipment and provides an 18-month warranty service。

V、Typical Application Scenarios of Diffused Silicon Sensors

The P-P981 series demonstrates outstanding performance in multiple fields：

• Smart water management：In pipeline network pressure monitoring，its ±0.1%FS accuracy is superior to mechanical pressure gauges• Industrial automation：Integrated with PLC systems to achieve closed-loop pressure control for equipment such as injection molding machines and compressors• Energy industry：In oil and gas pipeline monitoring，the wide temperature range of -40℃~125℃ performs outstandingly• Environmental protection engineering：Used with the CXH-103 sensor for force/pressure composite measurement in waste incinerators

Summary and Purchasing Recommendations

This 1000-hour field test proves that the P-P981 diffused silicon pressure sensor has excellent long-term stability，and its performance parameters fully meet the replacement requirements for similar products such as KYB-C3。For users requiring high-precision pressure measurement，we recommend：

1. Select the appropriate range and output method according to actual working conditions2. Give priority to regular manufacturers that provide complete test reports3. For complex application scenarios，consult technical personnel for system design

Xi'an Shenghongchuang provides technical consultation and selection services for the full series of diffused silicon sensors such as P-P974。Welcome to contact us to obtain customized solutions。They can also be used together with high-precision spoke-type force sensors to build a complete measurement system。