What method do you use to calibrate a thermometer?

What method do you use to calibrate a thermometer?

The ice-point method is the most widely used method to calibrate a thermometer.

What happens when you put a thermometer in boiling water?

When heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. This results in movement up the thermometer. When cooled, the molecules of the liquid in the thermometer move slower, causing them to get a little closer together.

Why should distilled water be used to calibrate a thermometer?

The simplest and cheapest way to calibrate a thermometer is through either the use of ice water or boiling water. Distilled water should always be used as dissolved solutes in tap water can significantly affect both freezing and melting points.

What is calibration of thermometer?

A thermometer is calibrated by measurements at a series of temperature fixed points (freezing/melting points, triple points or vapour pressure points of pure materials). By using this method we insert the thermometer in a fixed point cell which provides the desired temperature point.

What is the boiling point of water?

100 °C
Water/Boiling point
A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure. For example, water boils at 100 °C (212 °F) at sea level, but at 93.4 °C (200.1 °F) at 1,905 metres (6,250 ft) altitude. For a given pressure, different liquids will boil at different temperatures.

What happens to water when its temperature reaches 4 degrees Celsius?

Water is one of the few exceptions to this behavior. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.

What is calibration in thermometer?

Why do you calibrate a thermometer?

It is necessary to calibrate a thermometer to assure accurate readings, as the accuracy of a thermometer can drift over time. Exposure of the handle to the extreme temperature can cause the thermometer to drift. Exposure of the thermometer handle to extremely high temperatures can also cause the thermometer to drift.

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