The PT-PT300 pressure transmitter series uses advanced diffused silicon technology，offering multiple models such as PT124B-210-100MPa-NPT1/4、HG-S3，to meet different liquid and gas pressure measurement needs。This article will comprehensively analyze its advantages and disadvantages、usage methods and key purchasing points，helping operators select the right model and improve work efficiency。

Technical Principles and Market Status of Diffused Silicon Pressure Transmitters

Diffused silicon pressure sensors achieve pressure measurement through the piezoresistive effect of semiconductor silicon materials，with the core being the diffusion of a Wheatstone bridge on a silicon diaphragm。Compared with traditional strain-gauge sensors，the PT-PT300 series offers higher sensitivity and stability。Current mainstream models on the market include PT124B-212-5MPa-ZG1/2、DG1300-BZ-A-2-1，with prices ranging from several hundred to over ten thousand yuan，and the main differences are reflected in the measuring range（such as 100MPa high pressure and 1.6MPa low pressure）、interface standards（NPT1/4、ZG1/2，etc.）and output signal types。

In-Depth Analysis of Five Typical Application Scenarios

1. Petrochemical Field：The HG-S3 model is especially suitable for measuring corrosive media，and its stainless steel isolation diaphragm can withstand acidic gases such as H2S。2. Water Treatment Systems：SY-PG1300-1.6MPa-GB adopts an IP68 protection rating and can operate under long-term immersion。3. HVAC Control：FST800-501 is equipped with a temperature compensation module，maintaining ±0.5% accuracy in environments from -20℃~120℃。4. Hydraulic System Monitoring：The burst pressure of PT124B-210-100MPa-NPT1/4 reaches more than 3 times the measuring range。5. Laboratory Precision Measurement：BFY-1103 offers a resolution of up to 0.01%FS，and can be combined with Domestic displacement sensor LVDT-90MM differential pull-rod linear displacement sensor spring-return inductive sensor to build a multi-dimensional measurement system。

Key Parameter Comparison and Model Selection Guide

When purchasing，focus on the following：media characteristics（for example，HM13-10-250 is suitable for viscous liquids）、process connection method（differences between NPT threads and GB flanges）、long-term stability（BFY-1103 annual drift <0.1%）and whether intrinsically safe explosion-proof certification is required。

Solutions to Common Problems

Q：Are diffused silicon sensors reliable in high-temperature environments？
A：Through a special packaging process，the PT-PT300 series can operate at temperatures up to 150℃，far exceeding the 80℃ limit of ordinary models。
Q：How can you determine whether PT124B-212-5MPa-ZG1/2 is damaged？
A：Check whether the zero output exceeds ±1% of the measuring range，or perform a step response test like that used for the Domestic displacement sensor LVDT-90MM differential pull-rod linear displacement sensor spring-return inductive sensor。
Q：Which offers better cost performance，DG1300-BZ-A-2-1 or FST800-501？
A：The former is suitable for basic applications with limited budgets，while the latter performs better in dynamic response（10kHz）and EMC anti-interference capability。

Why Choose Our Solutions

We provide customized services for the full range of PT-PT300 pressure transmitters，from the PT124B-210 high-pressure model to the DG1300 precision model，all certified to ISO9001 and CE。Our professional technical team can assist with the entire process from model selection to installation and commissioning，ensuring optimal system integration results。Contact us now to receive a free pressure sensor selection manual and technical guidance。