Capillary Tube And Bulb Indicating Thermometer

Capillary Tube and Bulb Indicating Thermometers are instruments used for measuring temperature. They are part of the supply class Pressure, Temperature, and Humidity Measuring and Controlling Instruments in the supply group Instruments and Laboratory Equipment.

These thermometers consist of a glass bulb at one end and a capillary tube filled with a temperature-sensitive liquid, such as mercury or alcohol. The bulb is placed in the area where temperature is to be measured, and the capillary tube allows the liquid to expand or contract based on the temperature changes.

As the temperature increases, the liquid in the capillary tube expands and rises, indicating a higher temperature on the thermometer scale. Conversely, as the temperature decreases, the liquid contracts and the level in the capillary tube decreases, indicating a lower temperature.

Capillary Tube and Bulb Indicating Thermometers are commonly used in various industries and applications where accurate temperature measurement is required, such as laboratories, HVAC systems, industrial processes, and scientific research. They are known for their reliability, simplicity, and ease of use.