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Humidity Calibration

When are Humidity Calibration Services essential in Singapore?

Humidity plays a significant role in influencing the characteristics of air and the materials it comes into contact with. It’s essential to monitor and measure humidity, especially in places where you want to prevent issues such as condensation, corrosion, mold, warping, or spoilage of products.

Humidity calibration should be carried out under the following circumstances:

Initial Setup: New humidity measuring instruments should undergo calibration to establish their accuracy.

Regular Calibration: Periodic calibration is recommended, typically annually or based on manufacturer recommendations and industry standards.

After Repairs or Modifications: Calibration should be performed after significant repairs or modifications to verify the instrument’s accuracy.

Critical Applications: For applications where humidity measurements are vital for safety, quality, or compliance, more frequent calibration may be necessary.


In conclusion, opting for humidity calibration services in Singapore is crucial for obtaining accurate and reliable humidity measurements in various applications. Whether you are working in an industrial setting, conducting environmental research, or ensuring proper storage conditions for valuable items, calibrated humidity measuring instruments are essential for obtaining dependable data. By understanding humidity calibration and following the appropriate calibration procedures, you can ensure the accuracy and precision of your humidity measurements.

In the following sections of this guide, we will delve deeper into the humidity calibration process, explore calibration techniques, necessary equipment, and best practices. Let’s embark on this journey to master the art of humidity calibration and elevate the quality of your humidity measurements!

Why is Humidity Calibration Important ?


Accurate humidity measurements are essential for a wide range of applications:

Industrial Processes: Humidity control is crucial in industrial processes like pharmaceutical manufacturing, food processing, electronics production, and HVAC systems to ensure product quality and safety.

Agriculture: Humidity affects plant growth, storage conditions, and crop quality, making precise humidity measurements vital for agriculture.

Environmental Monitoring: Humidity influences weather patterns, climate studies, and ecological research, making accurate humidity data crucial for understanding environmental changes.

Museums and Archives: Maintaining proper humidity levels is critical for preserving artworks, historical artifacts, and valuable documents.

Humidity calibration is important for the following reasons:

Data Accuracy: Calibration ensures that humidity measurements are accurate and reliable, providing dependable data for critical decision-making.

Process Control: In industrial settings, precise humidity control is necessary for maintaining product quality and optimizing manufacturing processes.

Regulatory Compliance: Certain industries and applications may require calibrated humidity instruments to comply with industry standards and regulations.

Equipment Verification: Calibration verifies the performance and accuracy of humidity sensors, allowing for timely maintenance and replacements when necessary.

How often should we calibrate humidity?


Unitest Calibration features temperature sensor and humidity sensor calibration in Singapore. We recommend that you check your device or probe regularly. Calibration once a year is usually sufficient. It is good to calibrate the probe more frequently. Still, as a rule of thumb, calibration intervals can vary from once a year to calibrating before each measurement, depending on the company’s internal quality assurance regulations.

How is Humidity Calibration carried out?


Humidity calibration stabilises the humidity of the sample gas and measures it against a suitable base reference.

A humidity calibration system consists of

• Dry air source,

• A moisture generator that provides the required moisture content,

• A reference instrument that is more accurate than the device under test to provide reliable measurements

• A manifold that supplies calibration gas to the sensor/instrument under test.

When calibrating for relative humidity and temperature, the manifold should be temperature controlled or placed in a temperature-controlled environment to determine the relative humidity dew point value with temperature.

Range information


Non-contact Temperature calibration – Range from 35°C to 500°C.



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