The Critical Role of Diffused Silicon Sensor Selection in Flow Control

As the core component of flow control systems, diffused silicon liquid and gas pressure sensors directly affect the measurement accuracy and stability of process parameters. With its excellent media compatibility and long-term stability, the CEQ1300 series is widely used in petrochemical, power, pharmaceutical, and other industries. This article starts from the technical differences among 7 models, and combines measured data from more than 10 derivative models such as PN-M2 and YBS-S100 to provide scenario-based selection decision support for technical evaluators.

Comparison of Core Model Parameters of the CEQ1300 Series

Through comparative analysis, it is found that different models have significant differences in measuring range, media compatibility, and signal output methods:

Among them, the PMP317 model uses a 316L stainless steel diaphragm with a special sintering process, and can still maintain 0.05% measurement accuracy in a high-temperature environment of 204℃, making it especially suitable for steam flow monitoring in thermal power plants. Meanwhile, the domestic capacitive pressure transmitter MIK3351LTS flange-mounted digital display transmitter intelligent differential pressure transmitter achieves ±0.15% stability within a wide temperature range of -40～85℃ through digital compensation technology, and both have their own advantages under extreme working conditions.

Model Matching Recommendations for Different Application Scenarios

Based on the combined analysis of media characteristics and operating condition requirements, we provide the following selection guidance:

• Chemical process control: give priority to the ET-A customized model, whose Hastelloy C diaphragm can withstand strongly corrosive media with pH1-14
• LNG transmission: the MS-MS132 model is equipped with a -196℃ deep cryogenic adaptation module to avoid low-temperature embrittlement
• Sterile pharmaceutical environments
  

  Among them, the MIK3351LTS model with dual certifications of Exd Ⅱ CT6 and Exia Ⅱ CT6 uses a direct digital capacitive circuit to replace the traditional analog circuit, delivering outstanding performance in explosion-proof scenarios in the petrochemical industry. Its complete unit operating temperature adaptability over the wide range of -40～85℃ complements the HB-S high-temperature model of the CEQ1300 series.

  
  

  Three Technical Dimensions of Selection Decision-Making

  
  

  It is recommended that technical evaluators carry out systematic assessment from the following dimensions:

  
  
  1. Media compatibility: the DY-X model is equipped with a tantalum diaphragm option, enabling measurement of special media such as hydrofluoric acid
  2. Environmental adaptability: the PCM-D model with IP68 protection rating is suitable for subsea pipeline monitoring
  3. System integration: the MBC-1 model provides a Modbus RTU protocol interface for convenient connection with PLC systems
  
  

  In actual model selection, the impact of installation method must also be considered. For example, between the flange-mounted CEQ1300-P series and the threaded CEQ1300-T series, the zero-point stability difference in vibration scenarios can reach 0.98kPa, which requires comprehensive judgment in combination with the vibration resistance performance data of the domestic capacitive pressure transmitter MIK3351LTS.

  
  

  Technical Summary and Implementation Recommendations

  
  

  Through comparative analysis, it can be seen that various models of the CEQ1300 series form a complete solution matrix in terms of measurement range (0-100m), accuracy class (±0.05%~±0.1%FS), and media adaptability. Xi'an Shenghongchuang Instrument Co., Ltd. recommends:

  
  
  • For precision control scenarios requiring a 40:1 turndown ratio, give priority to the PMP317 or YBS-S100 models
  • In environments with strong electromagnetic interference, the HB-S explosion-proof model compliant with the IEC801 standard should be selected
  • For fields with strict hygiene requirements such as food and pharmaceuticals, it is recommended to use the ET-A customized version with fluororubber sealing
  
  

  If you need technical white papers or field test reports for specific models, please feel free to contact our technical engineering team. As a high-tech enterprise certified to ISO9001, we can provide full-process technical support from selection consultation to installation and commissioning, ensuring the best match between sensors and your flow control system.