Table of Contents
Are gas thermometers accurate?
In so far as any gas behaves as an ideal gas at a sufficiently low pressure, any real gas can be used in an ideal gas thermometer and to measure any temperature accurately. In practice, the ideal-gas thermometer is not as convenient to use as other thermometers—like the mercury-in-glass thermometer.
Is gas thermometer sensitive?
Thus gases expand more than liquids, i.e., gas will expand more than liquids for the same tiny change in temperature. Hence, gas thermometers are more sensitive than liquid thermometers.
Why do we not just calibrate the gas thermometer at absolute zero?
Waiting for equilibrium at absolute zero would take much more time than is available b) Measuring absolute zero requires liquid deuterium for coolant which is expensive Absolute zero cannot practically be produced in any lab setting Condensation of water vapor in the lab would raise the temperature.
What are the advantages and disadvantages of gas thermometer?
(i) Gas thermometers are very sensitive because the expansion of gases is considerable. (ii) The gases have regular expansion. (iii) Gas thermometers have wide range of temperature scale. (iv) Permanent gases have close resemblance with perfect gas.
What is the advantage and disadvantage of thermometer?
A thermometer comparison
| advantages | disadvantages |
|---|---|
| cheap | display is harder to read |
| durable | does not work below -39 C (Hg freezing pount) |
| accurate | cannot be used for thermograph |
| easily calibrated | slow response |
Why do we not just calibrate the gas thermometer?
And our thermometer Absolute zero of course, is the theoretical temperature at which all molecular motion ceases. So we cannot really calibrate our thermometer at absolute zero because of letter C, Absolute zero cannot practically be produced in any lab setting. So we cannot produce absolute zero.
What are the advantages of a gas thermometer?
A gas thermometer can measure temperature ranging from -200 to 800°C. Gas thermometer advantages also include a capillary length up to 30m and can have additional ATEX protection fitted for hazardous areas.
What are the pros and cons of a digital thermometer?
Pros of a regular digital thermometer: Cons of regular digital thermometer: Ear thermometers are inserted into the ear and use an infrared ray to measure temperature inside the ear canal. Forehead thermometers use an infrared ray to measure temperature of the surface of the forehead.
How does a bi metal gas thermometer work?
As the temperature changes, the bimetallic coil contracts or expands, causing the pointer to move up or down the scale. In turn, this creates a reading, illustrating the temperature. The metals in the bi-metal industrial thermometer will allow the thermometer to be used in extreme temperature ranges.
Which is an example of a gas filled thermometer?
The Bourdon TSF Series is one example of a gas filled thermometer, available at MGA Controls. The thermometer measures temperature either by a rigid tube or flexible capillary inserting into a Thermowell.