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Xi'an Shenghongchuang Instrument Co., Ltd.

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SP-802 Pressure Transmitter Price Revealed: Is the Diffused Silicon Hertzman Pressure Sensor Really Cheap?
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Market Positioning Analysis of Diffused Silicon Hirschmann Pressure Sensors


As a key component in the field of flow control equipment, the price of the SP-802 pressure transmitter has always been a focal point in corporate procurement decisions. This article provides an in-depth analysis of the cost-performance advantages of diffused silicon Hirschmann pressure sensors, compares several popular models such as CHR-CHR3000 and HT-805, and helps you make a wise investment when selecting a pressure transmitter.


In the current industrial automation market, diffused silicon Hirschmann pressure sensors are well known for their high cost performance. Their core technology uses the piezoresistive effect of semiconductor silicon materials to achieve stable conversion of pressure signals through precise micromachining processes. Compared with traditional capacitive or ceramic piezoresistive sensors, diffused silicon technology offers better temperature stability and long-term drift characteristics, making it especially suitable for industrial scenarios that require 24-hour continuous operation.


Performance Comparison of Mainstream Models


Through comparison of measured data from mainstream models such as CHR-CHR3000, HT-805, and DG-DG1210, it was found that:


  • CHR-CHR306 can still maintain a temperature drift performance of ±0.05%FS/℃ under 0.25 accuracy class
  • HT-805 uses a 316 stainless steel isolation diaphragm, making it especially suitable for corrosive media measurement
  • The P-P131 model performs outstandingly in the field of vacuum measurement, with a minimum measurable value of -0.1MPa

It is worth noting that the domestic general-purpose pressure transmitter FD80A high-temperature diffused silicon pressure sensor demonstrates unique advantages under high-temperature operating conditions, with a medium temperature range of -30~+85℃, fully meeting the needs of high-temperature applications such as turbo-generator units.


In-Depth Analysis of Price Composition Factors


The main factors affecting the price of the SP-802 pressure transmitter include:


Cost ItemProportionDescription
Sensor chip35%-45%The yield rate of diffused silicon chips directly affects cost
Structural components20%-25%304/316 stainless steel accounts for the largest proportion
Signal Processing Circuit15%-20%Includes temperature compensation and linearization processing module

Genuine sensors such as HM-HM20 use laser marking technology. Although this increases the cost by about 5%, it ensures a complete product traceability system and instead reduces maintenance costs from the perspective of long-term use.


Key Indicators for Procurement Decisions


Corporate decision-makers should focus on the following technical parameters:


  1. Overall error class: the price of 0.25 accuracy class is 30%-50% higher than that of 1.0 class, but it can significantly improve system control accuracy
  2. Media compatibility: special media require customized isolation diaphragms, which may increase costs by 15%-20%
  3. Certification standards: products certified with CE, SIL, etc. usually carry a premium of 10%-15%

Application Scenario Adaptation Guide


Based on many years of industry experience, different operating conditions should correspond to optimized pressure transmitter models:


  • Hydraulic systems: DG-DG1205 is recommended, and its 2x overload capacity ensures system safety
  • Building automation: the low-power-consumption characteristics of CS-PT100 can save wiring costs
  • Petrochemical industry: the fully welded structure of HM-HM27 can effectively prevent leakage

In variable-frequency control scenarios such as constant-pressure water supply, it is recommended to choose models with a response time ≤5ms. For example, FD80A series products can quickly follow pressure fluctuations and ensure the dynamic regulation performance of the system.


Industry Procurement Recommendations and Summary


Through a comprehensive analysis of diffused silicon Hirschmann pressure sensors, the following conclusions can be drawn:


  1. Price should not be the only procurement criterion; TCO (total cost of ownership) should be considered comprehensively
  2. High-quality domestic brands such as Xi'an Shenghongchuang have products whose performance is already close to imported brands
  3. For bulk purchases, stepped quotation discounts of 15%-20% can be negotiated

It is recommended that corporate decision-makers first conduct small-batch trials, focusing on verifying the long-term stability of the product under specific operating conditions. If you need customized solutions, please contact our technical team for in-depth communication, and we will recommend the most cost-effective model configuration based on your actual needs.


The stable operation of flow control equipment cannot be achieved without the support of high-quality pressure transmitters. Choosing the right diffused silicon sensor can not only reduce procurement costs, but also improve the reliability and service life of the entire system.

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