Thermometer immersion effect

In this article post, I am going to share about the immersion effect of thermometer, a liquid-in-glass thermometer is one of the most common types of temperature measuring devices. It consists of a large glass bulb at the bottom and a capillary tube with scale and liquid-filled bulb and part of the capillary. Also, in the smaller bulb surplus is usually incorporated, and the bulb orifices are by far the bulk of the liquid. As the temperature increases, a greater expansion of the liquid occurs compared to the recorded meanings.

The greatest sensitivity to temperature is found in a bulb where the greatest volume of liquid flow is contained over the entire portion of a vessel. Thermometers are temperature sensitive with temperature variations. you get the stem and only liquid space and maximum wave precision. It is necessary to specify how temperature should be specified on a glass thermometer.

The greatest control is obtained when the entire thermometer is completely immersed in a medium of uniform temperature, but in practice this is not possible when the medium is liquid. A common procedure submerged with the proper immersion depth with the proper prescription for this condition, only this technique does not guarantee absolute uniformity because the top position of the stem is still subject to some variation in environmental conditions.

Liquid in glass thermometer is commonly made in two types

1. Total immersion

2. Partial immersion

Total immersion type thermometer is calibrated to read correctly when submerged to identify length and width. The expressed portion has a temperature difference from the calibration, the correction must be applied to the reading. To apply a correction, it must be applied to the reading. To apply a correction, a small auxiliary thermometer is attached near the stem of the thermometer to be corrected. This is done to measure the temperature of the pop-up stem, the current dive but with a different surrounding air temperature than your original calibration condition, the correction to be applied can be calculated as

correct temperature = measured temperature + correction.