The CPS-C pressure transmitter adopts advanced diffused silicon sensor technology to accurately measure liquid and gas pressure. This article provides a detailed analysis of the working principle of diffused silicon sensors, and answers installation and maintenance questions for models such as STZ2-3 and PTG702, helping operators correctly use products such as the HDA4445 series to ensure accurate and reliable pressure measurement.

Working Principle of Diffused Silicon Sensors

The diffused silicon sensor is the core component of the CPS-C pressure transmitter, and its working principle is based on the piezoresistive effect. When liquid or gas pressure acts on the sensor diaphragm, the diaphragm undergoes slight deformation, causing a change in the resistance value of the embedded silicon resistors. This change is converted into an electrical signal through a Wheatstone bridge, and after amplification and linearization processing, outputs a standard signal （如4-20mA或0-10V）. Diffused silicon technology has become the preferred solution for industrial pressure measurement due to its high sensitivity, low temperature drift, and long-term stability. Taking HDA4445-A-250-Y00 as an example, its measurement accuracy can reach ±0.1%FS, and its operating temperature range is -40℃~125℃, fully meeting demanding operating condition requirements.

Comparison of Technical Parameters of Key Models

Key Points for Installation and Maintenance

For the installation of models such as RC-RC301, special attention should be paid to the following aspects: first, the installation location should avoid vibration sources and heat sources, and sealing gaskets should be used for process connections to ensure airtightness. For the PTX5072-TB-A1-CA-H0-PH model with remote signal transmission, cable routing should be kept away from strong electromagnetic interference sources. During routine maintenance, zero-point drift should be checked regularly （建议每3个月校准一次）, and high-pressure models such as HDA4445-A-350-Y00 require special attention to diaphragm cleanliness. When abnormalities occur in the alarm control function （如PTX5072-TB-A1-CA-H0-PR型号）, first check whether the set value exceeds the measuring range.

Industry Application Solutions

In the petrochemical field, the corrosion-resistant characteristics of the SAM-K model can cope with hydrogen sulfide environments; the PTG-PTG702 is selected for the food and pharmaceutical industries because its 316L stainless steel material complies with FDA standards. Xi'an Shenghongchuang's PTX5072 series has passed SIL2 certification and has been successfully applied to the polymerization reaction pressure monitoring system of Shaanxi Beiyuan Chemical Group, operating continuously for 18 months without failure. In response to different media characteristics, we provide a variety of process connection solutions, including flange type and threaded type, to ensure that the measurement system is perfectly matched with the process flow.

Why Choose Xi'an Shenghongchuang

As a national high-tech enterprise, we possess core manufacturing technology for diffused silicon sensors, and all products undergo 72-hour aging tests before leaving the factory. We provide dimensional drawing download services for models such as HDA4445-A-100-Y00, and are equipped with a professional technical team to guide installation and commissioning. Our warranty policy covers all products （including the PTX5072 series）, and our 24-hour response mechanism ensures that users have no worries after purchase. If you need the complete technical solution or an on-site demonstration for the CPS-C pressure transmitter, please call 029-84563217 to contact our pressure measurement experts.