Q:

What is a bimetallic strip thermometer?

A:

A bimetallic strip thermometer is a mechanical thermometer that is commonly used for its temperature control. This type of thermometer is robust, simple and has a wide temperature range. It contains two strips that are bonded together and made of dissimilar metals.

The strips have a fixed end and a free end. The principle behind the mechanism of a bimetallic thermometer is that the pair of strips bend at the free end when the temperature changes, and one of the strips expands more than the other. Bimetallic strips typically use a low thermal expansion alloy, such as Invar, and a high thermal expansion alloy, such as steel or stainless steel.

Bimetallic strip thermometers are constructed in two ways. The first method is a spiral strip, which involves coiling the bimetallic strip into a spiral that is attached to a dial that shows the temperature. The second method of constructing this thermometer is through a cantilever strip, which uses deflection to indicate temperature. The bimetallic strips are closely bonded together in a cantilever.

Bimetallic thermometers are often used to measure and control temperature in thermostats. The main advantage of using bimetallic strips is that a power source is not necessary. Moreover, they are sturdy, affordable and easy to use. However, they are not quite exact, and they do not function well at very low temperatures. Also, they cannot be used in applications where manual reading is not acceptable.


Is this answer helpful?

Similar Questions

  • Q:

    What is a bimetallic strip used for?

    A:

    A bimetallic strip is used in thermometers. It can also be used in different applications, such as coils found in thermostats and electrical breaker boxes.

    Full Answer >
    Filed Under:
  • Q:

    What is a bimetallic strip?

    A:

    A bimetallic strip is a device used to change heat energy into mechanical motion. It is made of two varying metals that expand at different rates when exposed to heat; the metals are joined to form a concentric coil or a straight strip.

    Full Answer >
    Filed Under:
  • Q:

    What does the bimetallic strip in an electric iron do?

    A:

    The bimetallic strip on an iron serves as a thermostatic switch to stop electricity from flowing to the heating element once the appliance reaches the desired temperature. The differences in the coefficients of expansion for the two metals that form the strip cause it to curve as it heats, eventually to the point it pulls away from the electrical contact and breaks the circuit.

    Full Answer >
    Filed Under:
  • Q:

    What type of object do you study with a stereo microscope?

    A:

    A stereo microscope is used to observe lowly-magnified samples and to study the surfaces of solid specimens. It is also used to conduct works that require closer observation, such as dissection, microsurgery and watch-making. According to the New York Microscope Company, other key uses of stereo microscopes are circuit board manufacture, fracture surfaces processes and forensic engineering. Thus, its key areas of use are manufacturing, inspection and quality control sections.

    Full Answer >
    Filed Under:

Explore