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This blog was originally published on June 20, 2022, and updated on May 28, 2025. Maintaining accurate and stable pressure measurements is a constant challenge in demanding applications, particularly as pressure sensors age or are exposed to extreme conditions such as vibration, temperature fluctuations or pressure cycling. This can lead to loss of stability, causing your sensor to drift outside of its specified range. When this happens, you have an important decision to make: recalibrate or replace your instrument. As a trusted leader in pressure measurement technologies, Ashcroft brings over 170 years of engineering expertise to support process applications across multiple industries. Read this article to learn more about zero and span adjustability, why it’s important to long-term sensor performance, the benefits and limitations of using adjustable pressure transducers and ow to determine when recalibration is needed. Read on to discover how pressure transducers with zero and span adjustability can improve your system’s reliability and help you avoid costly interruptions. You will also see links to additional articles and resources to help deepen your knowledge about this topic even further.

If you are using a pressure transducer (also known as a sensor) to measure liquid, gas or air pressure in a critical environment, OEM application or high-purity manufacturing process, you need to have confidence in the accuracy of your instrument. That confidence will be tested if there is an offset in the output of that instrument at zero and/or span. However, if you understand the reasons behind why offset can occur and what you can do to address it, your confidence will be restored. Ashcroft, an industry leader in pressure measurement instruments, has consistently demonstrated reliability and excellence in the field of pressure measurement instrumentation. That's why we are often asked to share our expertise and shed light on topics like this one. Read this article to learn how transducers measure pressure, possible causes of offset in the output of your sensor and what you can do to ensure your sensor is providing you with an accurate pressure measurement. You will also have the opportunity to deepen your knowledge through additional articles and resources available to you.