This article provides an in-depth analysis of key selection points for diffused silicon liquid and gas pressure sensors，with a focus on comparing core parameters of models such as KS-E-E-Z-B01C-M-V、YM-DJYJ、KE-240-400BG5M。From working principles to practical applications，it explains in detail how to choose a suitable diffused silicon sensor based on medium characteristics and environmental conditions，and provides comparisons of products from mainstream manufacturers and recommendations for purchasing genuine products。Whether you need the high-precision KE-240-400BG5M，or the KS-E-E-Z-B04U-M-V suitable for corrosive media，this article can provide professional guidance to help you easily select the most suitable pressure transmitter。