Technical Analysis of the Measurement Range of Diffused Silicon Pressure Transmitters

As a key device in industrial measurement, the measurement range of the diffused silicon sensor in the CYB-28 pressure transmitter directly affects system accuracy and stability. This article provides an in-depth analysis of the core parameters of the CYB-28 and related series products, covering calibration methods, wiring specifications, and key points for matching instrument selection for models such as PT-A and SWT131, helping engineers accurately match application requirements.

I. Measurement Range and Selection Logic of Diffused Silicon Sensors

Diffused silicon pressure sensors convert pressure into electrical signals through the semiconductor piezoresistive effect, and their measurement range directly determines the applicable scenarios of the device. Taking CYB-28 as an example, the typical measuring range covers 0～0.01MPa to 0～250MPa, meeting the needs of scenarios such as hydraulic control and power station inspection. The following factors should be considered when selecting a model:

• Media compatibility: 316 stainless steel material can withstand corrosive liquids/gases
• Overload capacity: 2 times full scale or an overload protection threshold of 300MPa
• Temperature impact: ±0.05%FS/℃ drift at media temperatures from -30～+85℃

Similar to products such as the domestic general-purpose pressure transmitter KSYGX, multiple range configurations (gauge pressure/absolute pressure/vacuum) can be used to adapt to complex working conditions in petrochemical, metallurgy, and other industries.

II. The Impact of Key Parameters on System Accuracy

The performance indicators of pressure transmitters need to be evaluated as a whole:

In practical applications, models such as SWT131 need to work with temperature compensation technology (within the 0～70℃ range) to suppress environmental interference. For continuous operation scenarios such as constant-pressure water supply, it is recommended to choose long-life models such as TS-802 (MTBF＞5 years).

III. Installation, Commissioning, and Signal Processing Specifications

Correct installation directly affects measurement accuracy:

1. Mechanical installation: Use M20×1.5 or G1/4 male threaded connections to avoid mechanical stress affecting the sensor diaphragm
2. Electrical wiring: Refer to the four-core shielded cable standard (IP65 protection) for QYB101 supporting equipment
3. Signal calibration: Use PLS series supporting instruments for ±8% zero adjustment and ±20% range adjustment

Special reminder: for the 4～20mA output of models such as CYB-23, attention must be paid to the polarity of the two-wire connection, as incorrect wiring may cause display instruments such as FG500 to burn out.

IV. Industry Application Solutions

Different industrial scenarios have differentiated requirements for pressure transmitters:

• Petrochemical industry: SNYB810 accessory kits should be selected to achieve explosion-proof modification
• Building automation: Compact PT-A transmitters with LCD display are recommended
• Laboratory calibration: Requires 0.1 class accuracy and support for laser traceability calibration

For scenarios requiring multi-parameter monitoring, KSYGX transmitters can be used in combination with temperature and humidity sensors to build a comprehensive monitoring system.

Technical Summary and Selection Recommendations

When selecting a diffused silicon pressure transmitter, it is necessary to comprehensively evaluate the three major factors of measuring range, media characteristics, and environmental conditions. The full series of products provided by Xi'an Shenghongchuang Instrument Co., Ltd., with 316 stainless steel construction, multiple signal output options, and modular design, can cover more than 90% of industrial measurement scenarios. Engineers should focus on verifying the matching degree between the gauge pressure and absolute pressure parameters in the measuring range table in the product manual and the actual site working conditions.

Action recommendation: To obtain customized selection solutions or technical documents, please contact our engineering support team immediately for system-level pressure measurement solutions.