Electrolytic hygrometers are employed for the precise measurement of moisture content in gases. Their highly accurate readings make them indispensable tools in various industries that rely on controlled humidity conditions.
Electrolytic hygrometers are based on the principle of electrolysis. A thin film of electrolyte is applied between two electrodes. When moisture is present in the gas sample, it is absorbed by the electrolyte. This absorption triggers an electrochemical reaction, generating an electrical current proportional to the moisture concentration.
* **High Accuracy:** Electrolytic hygrometers provide highly precise and reliable moisture readings.
* **Fast Response:** They exhibit rapid response times, making them suitable for real-time monitoring.
* **Wide Measurement Range:** Electrolytic hygrometers can measure moisture levels over a wide range, from very dry to very humid conditions.
* **Rugged Construction:** Their robust design makes them resistant to harsh environments.
Electrolytic hygrometers find widespread use in:
* **Power Transmission and Distribution:** Monitoring moisture in insulating oils and transformers.
* **Semiconductor Manufacturing:** Controlling humidity in sensitive fabrication processes.
* **Pharmaceutical Industry:** Ensuring optimal moisture levels for drug storage and packaging.
* **Corrosion Monitoring:** Detecting moisture that can lead to corrosion in pipelines.
Regular calibration is crucial to maintain the accuracy of electrolytic hygrometers. This process typically involves exposing the sensor to known moisture concentrations and adjusting the instrument accordingly.
Electrolytic hygrometers are highly accurate, reliable, and versatile tools for moisture testing. Their ability to measure moisture content in gases makes them essential in numerous industries where controlled humidity is paramount.