PT500 pressure transmitter：a purchasing guide for diffused silicon sensors

As a key device in the field of industrial automation，the PT500 pressure transmitter is directly affected in measurement accuracy and stability by the selection of its core component，the diffused silicon sensor。This article focuses on popular models such as DG1300 and AST-E1117，and analyzes how to select cost-effective diffused silicon liquid and gas pressure sensors from dimensions such as price，quality，and manufacturer qualifications，helping operators avoid procurement pitfalls。

一、Technical principles and core advantages of diffused silicon sensors

Diffused silicon pressure sensors use the piezoresistive effect of semiconductor silicon materials，and fabricate a Wheatstone bridge on the silicon wafer through MEMS processes。When pressure is applied，the silicon diaphragm deforms，causing resistance changes and outputting a voltage signal。Compared with traditional ceramic or metal strain gauge sensors，models such as DG1300-BZ-B-2-300/CJ/GZ offer advantages including high sensitivity（typical value 2mV/V），low temperature drift（±0.02%FS/℃），and excellent long-term stability（±0.1%FS/year），making them especially suitable for AST-E1117 pressure transmitters in corrosive media measurement in the petrochemical industry。

二、Comparative analysis of key procurement indicators

三、In-depth analysis of industry application scenarios

When selecting the ZY800-V1-B1-C1-J1P1 pressure transmitter，special attention should be paid to media compatibility：

• Petrochemical：The AST-C1000 series should be equipped with a Hastelloy diaphragm to withstand H2S corrosion
• Food and pharmaceutical：The JX-004 model should pass 3A certification and adopt a 316L fully welded structure
• Water treatment：YM-YM300 is recommended to be equipped with a ceramic diaphragm to prevent scaling

四、Common procurement misconceptions and solutions

When many users ask "which MYR-22 pressure transmitter is better"，they often fall into the low-price trap。In practice，the following should be checked：

1. Whether the manufacturer has ISO9001/ATEX certification
2. Whether the core sensor is originally factory-packaged（not second-hand refurbished）
3. Whether at least a 3-year warranty and on-site calibration service are provided

五、Technical trends and innovation directions

Leading manufacturers have integrated AI compensation algorithms into DG1300-BZ-B-2-300/CJ/GZ，improving accuracy to ±0.05%FS through temperature-pressure composite modeling。The new generation of AST-E1117 products adopts the wireless HART protocol，enabling synchronous transmission of multiple parameters including pressure-temperature-vibration。

六、Professional recommendations for operation and maintenance

When installing PT500-50M-10V-0.5-M20-3m-503，pay attention to the following：

• Avoid installation at pipe bends，and keep at least 5 times the pipe diameter away from valves
• For liquid measurement，the vent valve should face upward，and for gas measurement，it should face downward
• Perform zero calibration monthly with FLUKE754

七、Why choose a professional supplier

We provide customization services for products such as the AST-C1000 pressure transmitter：

• 15 years of R&D experience in diffused silicon sensors，with SIL2 certification
• Rapid sample delivery within 72 hours，supporting OEM/ODM
• Free selection software and technical training provided

Contact our engineers now to obtain the latest quotation and technical solution for the KYB-G pressure transmitter。