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How does an analog hygrometer work?

A hygrometer is a measuring device that is used to determine the humidity in the environment. Analog hygrometers are a traditional type of these devices and use mechanical components to measure humidity.

Components of an analog hygrometer


Hair hygrometer
: The heart of an analog hygrometer is a hair hygrometer. It consists of a strand of human hair or a synthetic material that absorbs and releases moisture depending on how the humidity changes. The hair expands at high humidity and contracts at low humidity.

Mechanical scale: This scale is connected to the hair and displays the current humidity. It can be calibrated in percentages to display the exact relative humidity.

Housing and frame: The housing protects the sensitive hair hygrometer from external influences and provides the necessary stability.

Calibration elements: Some analog hygrometers have adjustment options to ensure that the measurements are accurate. This can be a dial or a screw with which the scale is adjusted.

Accuracy of analog hygrometers

Analog hygrometers are sufficiently accurate for most everyday applications. They can often achieve an accuracy of ±5%, which is more than sufficient in most cases.

Advantages of analog hygrometers over digital ones


Easy to read
: The scale of an analog hygrometer is intuitive and easy to read. No special knowledge or technology is required to determine the humidity. Furthermore, limit values can be specified very easily on such a scale and checked directly.

No battery dependency: Analog hygrometers do not require a power supply. They are always ready for use and do not need to be regularly supplied with batteries.

Longevity: Because they have no electronic components, analog hygrometers tend to last longer. There is less that could break.

Cost efficiency: Analog hygrometers are generally cheaper to buy than their digital counterparts.

Classic design: For lovers of traditional measuring instruments, analog hygrometers have an aesthetic appeal.

Conclusion

Analog hygrometers are reliable and inexpensive tools for measuring humidity. Their ease of use and readability make them attractive for many applications. For applications that require the highest precision, digital hygrometers may be a better choice. But for average use, analog hygrometers offer an excellent solution.