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This article was originally published on April 3, 2023, and was updated on June 9, 2025. In chemical and petrochemical systems, or any application that requires you to measure differential pressure (DP) with high static pressure and low differential pressure, reliability and corrosion resistance are crucial for safe instrumentation operation. If your pressure measuring instruments aren’t compatible with your process, you may face equipment damage and downtime. Ashcroft has been a leader in pressure instrumentation since 1852. During that time, we have answered questions from customers about differential pressure and the measurement solutions we offer. In this article, you will get a quick overview of differential pressure and learn about two of the several differential gauges we offer, including the Ashcroft® 5503 DP Gauge and Ashcroft® F5504 DP Gauge. By comparing the similarities and differences, you can determine which may be a better solution for your specific application. You will also see additional resources that you can explore to deepen your knowledge further about differential pressure and considerations for choosing pressure gauges.

In semiconductor applications, your pressure instrumentation needs to stand up to the conditions as well as meet high-purity standards and regulations. Ashcroft's line of fluoropolymer pressure transducers provides reliable pressure measurements for your semiconductor applications. How do you know which of these transducers is the right one for your application? This blog will compare Ashcroft’s ZL91, ZL92 and ZL95 pressure transducers and discuss their features and benefits to help you find the best solution for your needs.