HQ-HQ1000 Pressure Transmitter Purchasing Guide：7 Key Indicators for Diffused Silicon Sensors

In the field of industrial automation，the selection of the HQ-HQ1000 pressure transmitter directly affects measurement accuracy and system stability。This article provides an in-depth analysis of the 7 key indicators for diffused silicon liquid and gas pressure sensors，covering the operating principles，selection essentials，and manufacturer comparisons of models such as DG2112-YY and ZJ-1P-12PV，helping operators quickly master genuine product purchasing techniques and performance evaluation methods。

I、Operating Principle and Technical Advantages of Diffused Silicon Sensors

Diffused silicon pressure sensors are based on the piezoresistive effect。When the pressure of the measured medium acts on the sensitive element，the silicon diaphragm deforms，causing changes in the resistance values of the Wheatstone bridge，and a standard electrical signal is output through the signal conditioning circuit。Compared with traditional capacitive sensors，models such as DG1300-BZ-A-2-4/AF feature fast response speed（＜1ms），good temperature characteristics（-40℃~125℃），and high long-term stability，making them especially suitable for dynamic pressure measurement scenarios such as hydraulic systems and pneumatic control。It is worth noting that，Domestic Displacement Sensor LWH Injection Molding Machine Tie-Bar Electronic Ruler Resistance Ruler Tie-Bar Linear Displacement Sensoralso adopts precision resistance measurement technology，with independent linearity up to ±0.05%，forming complementary applications with high-precision pressure transmitters。

II、In-Depth Analysis of 7 Core Selection Indicators

Among them，the two indicators of sealing rating IP67 and operating temperature range（-60℃~150℃）can refer to the protection standards of displacement sensors。For example，in injection molding machine applications，the environmental adaptability of both pressure transmitters and displacement sensors must be considered simultaneously。

III、Common Selection Misconceptions and Genuine Product Identification

Operators often fall into the misconception of "only looking at price"，but in fact，genuine products such as FST800-211G241I should have：① laser-marked serial numbers；② third-party test reports（with CNAS mark）；③ a complete anti-counterfeiting verification system。One customer once experienced a production line shutdown due to the use of inferior imitations，and after switching to the JYB-JYB pressure transmitter，the failure rate decreased by 83%。

IV、Industry Application Scenario Matching Guide

• Petrochemical Industry：Give priority to the DG1300-BZ-A-2-4/AF explosion-proof model，which must pass ATEX certification
• Water Treatment：FST800-501P341G-10B is equipped with a ceramic diaphragm，resistant to particle erosion
• Medical Equipment：Biocompatibility certification is required，and the PD50 series is recommended

Similar to displacement sensors，different scenarios have differentiated requirements for protection ratings。For example，in humid environments，an IP67 sealed design can ensure long-term stable operation of the sensor。

V、Technical Development Trends and Alternative Solutions

MEMS technology is driving sensors toward intelligent development，and the new-generation HQ-HQ1000 has integrated a temperature compensation algorithm。When the budget is limited，resistive sensors can be considered as a transitional solution，but attention should be paid to their relatively poor dynamic response characteristics。

VI、Authoritative Certifications and Standards Interpretation

High-quality pressure transmitters should pass the following certifications：① GB/T 34036-2017 industrial automation instrument standard；② CE/UL safety certification；③ third-party accuracy verification report（such as SGS）。This has equivalent validity to the DIN430650 standard followed by displacement sensors。

VII、After-Sales Service and Purchasing Recommendations

It is recommended to purchase the FST800 series through authorized channels，which provides：① 24-month warranty；② free technical training；③ rapid response service。After adopting this solution，one automotive manufacturer increased equipment MTBF（Mean Time Between Failures）to 50,000 hours。

If you need to obtain the HQ-HQ1000 pressure transmitter selection manual or consult on matching solutions for displacement sensors，please contact our professional technical team。We provide full-process support from selection to installation，ensuring optimal performance for system integration。