In the field of industrial automation，KYB-C2 and KYB-C3 pressure transmitters，as representative models of diffused silicon liquid and gas pressure sensors，have performance differences that directly affect measurement accuracy and system stability。This article will provide an in-depth analysis of the advantages and disadvantages of the KYB-C3 pressure transmitter and the characteristics of competing products such as CLG-D from the perspectives of working principles，selection key points，and manufacturers，providing key decision-making references for technical evaluation personnel。

一、Comparative Analysis of Technical Performance and Parameters

KYB-C2 and KYB-C3 pressure transmitters both adopt diffused silicon sensing technology，but there are significant differences in key parameters。KYB-C3 is close to the Domestic Flush Diaphragm Pressure Transmitter CYYZ53 Threaded Compact Pressure Sensor in measurement range（0~250MPa）and overload capacity（2 times full scale），but its temperature drift（≤±0.03%FS/℃）is better than KYB-C2's ±0.05%FS/℃。For application scenarios requiring long-term stability，such as power station operation inspection or the petrochemical industry，KYB-C3's overall error（0.25 class）can better meet high-precision requirements。KYB-C2 offers better cost-performance advantages in cost-sensitive projects such as building automation，and its medium temperature range（-30~+85℃）is completely consistent with the CYYZ53 series。

二、Application Scenarios and Selection Guide

When technical evaluation personnel select products for hydraulic control systems，they need to focus on the response time and medium compatibility of the pressure transmitter。KYB-C3's rise time is ≤3 milliseconds，40% faster than KYB-C2，making it especially suitable for dynamic pressure monitoring scenarios such as locomotive braking systems。For static measurement scenarios such as laboratory pressure calibration，both can be selected，but it should be noted that KYB-C2 only provides an M20×1.5 threaded interface，while KYB-C3 supports multiple specification options such as Gl/4 male thread。Manufacturers of diffused silicon liquid and gas pressure sensors usually recommend：in corrosive medium environments，give priority to the CYYZ53 series made of 316 stainless steel or the high-configuration version of KYB-C3。

三、Horizontal Comparison of Mainstream Market Products

四、FAQ on Key Factors in Procurement Decisions

Q：How to verify the qualifications of a diffused silicon liquid and gas pressure sensor manufacturer？
A：ISO 9001 quality management system certification should be checked，and third-party test reports should be requested，especially long-term stability data for PT124B-210 series products。For special models such as the CLG-D pressure transmitter，explosion-proof certification（such as ATEX）also needs to be confirmed。

Q：How does the quality of the AST-B pressure transmitter compare with the KYB series？
A：AST-B performs excellently in the field of light industrial machinery，but its temperature drift indicator（±0.1%FS/℃）is significantly higher than KYB-C3。For high-temperature scenarios such as metallurgy，it is recommended to give priority to KYB-C3 or CYYZ53 high-precision versions using laser marking technology。

五、Future Technology Development Trends

With the development of the Industrial Internet of Things，smart pressure transmitters supporting digital output will become mainstream。KYB-C3 has reserved RS485 communication interface expansion capability，while the new generation of Domestic Flush Diaphragm Pressure Transmitter further integrates wireless transmission modules。When selecting models，technical evaluation personnel should not only consider the parameters of current models such as PTX5072-TB-A1-CA-H0-PB，but also pay attention to whether the equipment has an Industry 4.0 upgrade path。

Why Choose Professional Sensor Solutions

We provide technical verification services for the full range of pressure transmitters from PT124B-210-1.6MPa-M20 to CLG-D。Based on fifteen years of industry experience，we can customize sensing solutions for special scenarios such as constant-pressure water supply。All products undergo rigorous aging tests to ensure performance consistency within the storage temperature range of -40~90℃，helping customers achieve precise measurement and control。