How do temperature and pressure influence pH measurements?
Temperature and pressure can affect both measurement performance and sensor lifetime. Understanding these influences helps ensure accurate pH measurements and reliable sensor operation.
Temperature has a significant effect on pH measurements because it changes the electrode response (Nernst slope). Temperature compensation is therefore essential for accurate measurements. Keep in mind that temperature can also change the actual pH of the process medium.
High temperatures accelerate sensor aging, increase drift, and can shorten sensor lifetime.
Pressure can damage or break the sensor. Therefore, always check the sensor specifications before installation.