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what is used in laboratory thermometer

by Electa Jakubowski Published 2 years ago Updated 1 year ago
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Uses of Laboratory Thermometer And Their Function

  • Liquid-in-Glass Most thermometers usually fall in the category of science laboratory glassware as it made of glass. ...
  • Infrared This type of thermometer comprises a lens that focuses the infrared energy (IR) on to a detector. ...
  • Bimetallic Strip The bimetallic strip thermometer is made of two metals bonded together. ...
  • Thermistor This thermometer is basically an electronic device. ...

Thermometers may contain a fluid such as mercury or a gas in a glass or metal tube. In the case of liquid-in-glass thermometers, the liquid expands as the temperature rises, indicating the temperature.

Full Answer

How to use a thermometer to take your temperature?

Oral temperature

  • If you've been eating or drinking, wait 30 minutes before you take a temperature by mouth.
  • Turn on the digital thermometer. Place the thermometer tip under your tongue.
  • Close your mouth around the thermometer for the recommended amount of time or until the thermometer beep indicates it's done.
  • Remove the thermometer and read the number.

What is a lab thermometer?

Laboratory thermometers are devices used to measure temperature. There are many types of lab thermometers such as differential, mechanical, logging, etc. Laboratory thermometers are progressively providing digital reading displays and are input-capable to computer and software programs for logging purposes.

What is a thermometer used for?

The food & beverage industry requires non-contact infrared thermometers to calculate the temperature of the manufactured products during their production and storage. As these products are temperature-sensitive, they need to be manufactured and stored at a particular temperature.

How is a thermometer used?

Thermometers are frequently used to monitor processes in technology and industry, as well as in meteorology, medicine, and scientific study. A thermometer contains two essential components: (1) a temperature sensor in which changes occur with change in temperature.

What are the uses of thermometers?

How does a clinical thermometer work?

What is the design of a clinical thermometer?

How to bring mercury back into a thermometer?

What is the temperature of a body?

Where is the mercury thermometer placed?

When was the first thermometer invented?

See 4 more

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Which material is used in laboratory thermometer?

MercuryMercury is the most commonly used material in different types of thermometers for various reasons. First, mercury is a metal that is a good conductor of heat and expands instantly as it starts to heat.

Which liquid is filled in laboratory thermometer?

Mercury is used in clinical thermometers. In laboratory thermometers, alcohol is used.

How do we use a laboratory thermometer?

0:132:33How to use Laboratory Thermometer, Class 7 Physics | Digital TeacherYouTubeStart of suggested clipEnd of suggested clipPlace the thermometer in hot water observe the change in the mercury level and note down theMorePlace the thermometer in hot water observe the change in the mercury level and note down the readings. Now take out the thermometer and dip it in cold water absorb.

What is the use of laboratory thermometer Class 7?

A laboratory thermometer is a tool used in laboratories to measure temperature with high accuracy.

What are the 2 liquid in a thermometer?

The two common liquids used in liquid-in-glass thermometers are alcohol (ethanol) and mercury, which have melting points and boiling points of -114 C, 79 C and -39 C, 357 C, respectively.

What are the 2 liquids used in thermometers?

Thermometer liquids are mercury and alcohol.

Why mercury is used in thermometer?

Mercury is used in thermometers because It has a high coefficient of expansion so that even a small rise in temperature brings about sufficient expansion which can be detected in the capillary of the calibrated part of the thermometer.

What is laboratory thermometer answer?

Laboratory thermometers are devices used to measure temperature. There are many types of lab thermometers such as differential, mechanical, logging, etc. Laboratory thermometers are progressively providing digital reading displays and are input-capable to computer and software programs for logging purposes.

What is mercury of thermometer?

In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.

What are the 5 uses of thermometer?

Thermometers are frequently used to monitor scientific processes in laboratories. Body temperature is measured with a medical or clinical thermometer. Laboratory thermometer is used to determine the room temperature of heated solids and liquids. Infrared thermometers can take readings from a distance.

What are the 4 types of thermometers?

There are different types, but not all thermometers are right for your child.Digital thermometers. ... Ear (or tympanic) thermometers. ... Infared thermometers. ... Strip-type thermometers. ... Mercury thermometers.

What is laboratory thermometer short answer 7?

Laboratory or Lab thermometers are the instruments that are used to measure the temperatures for scientific researches in schools and labs. Lab thermometers are designed to measure the temperatures, the boiling point and the freezing point of substances.

How do you use a thermometer step by step?

How do I take a temperature?Clean the tip with cold water and soap, then rinse it.Turn the thermometer on.Put the tip under your tongue, towards the back of your mouth.Close your lips around the thermometer.Wait until it beeps or flashes.Check the temperature on the display.

What are 3 ways to use a thermometer?

These include:Oral: For this method, the thermometer is placed under the tongue. ... Rectal: For this method, the thermometer is inserted gently into the rectum. ... Axillary: For this method, the thermometer is placed in the armpit for young children or adults whose temperature can't safely be done orally.

How a thermometer works step by step?

When the tip of the mercury thermometer touches the material it is measuring, the material conducts heat energy to the mercury. Then the mercury expands as it turns into a liquid and begins to rise up the tube. The place where the mercury stops on the scale is where you can take the reading of the temperature.

What are the 5 uses of thermometer?

Thermometers are frequently used to monitor scientific processes in laboratories. Body temperature is measured with a medical or clinical thermometer. Laboratory thermometer is used to determine the room temperature of heated solids and liquids. Infrared thermometers can take readings from a distance.

What Is The Difference Between Clinical Thermometer And Laboratory ...

Clinical Thermometer. Laboratory thermometer. The temperature range is 35° to 42°C. The temperature range is -10° to 110° C. It is used to measure human body temperature.

Uses of Laboratory Thermometer And Their Function

Unlike the medical or clinical thermometer which is used solely to measure human body temperature, a laboratory thermometer has different uses. A laboratory thermometer is used to measure the boiling point and freezing point during science experiments. It is also used to measure the temperature of substances. It measures temperature ranging between -10 degree Celsius and 110 degree Celsius ...

State similarities and differences between laboratory thermometer and ...

Thermometer (thermos: hot; metron: measure) is the universal instrument used to measure temperature. Clinical Thermometer is meant for clinical purposes. It is developed for measuring the human body temperature. A laboratory thermometer, which is colloquially known as the lab thermometer, is used for measuring temperatures other than the human body temperature.

Parts Of A Laboratory Thermometer | Products & Suppliers - GlobalSpec

Description: accuracy of ± 0.4 °F (± 0.3 °C). This thermometer is specially constructed with a heavy duty ABS case specifically designed for industrial use. Model 868 reads in °F. Model 869 reads in °C. An optional tilt stand/belt clip, Part Number 8660, is available for field or Application Type: Industrial, Laboratory Celsius Scale: -100 to 630 C

Liquid-in-Glass

Most thermometers usually fall in the category of science laboratory glassware as it made of glass. The laboratory thermometer can be easily identified through its long stem with a silver bulb at its bottom. The silver colour is nothing but mercury which expands as the temperature goes up and contracts as temperature go down.

Infrared

This type of thermometer comprises a lens that focuses the infrared energy (IR) on to a detector. This detector in turn coverts IR into an electric signal that is further displayed in units of temperature. Its application is best suited for taking temperatures from a distance or measuring it from the surface.

Bimetallic Strip

The bimetallic strip thermometer is made of two metals bonded together. It is mainly used to control temperatures and hence, finds a wide application in industries. It is ideal for accurate calculation of high-temperature substances or objects. Basically, it converts temperature into mechanical displacement.

Thermistor

This thermometer is basically an electronic device. Its name is a blend of thermal and resistor. Its resistance is dependent on temperature. It mainly measures changes in electrical resistance and converts them to changes in temperature.

What are the uses of thermometers?

There are a plethora of uses of the thermometer in the field of medical science, meteorology, monitoring thermodynamic or chemical or various physical processes, food technology, engineering applications and many more.

How does a clinical thermometer work?

Working of the clinical thermometer: This thermometer must be kept clean and sterilized before taking the temperature of the patient. The thermometer is placed inside the mouth of the patient to measure the body temperature. As the temperature of mercury in the glass bulb rises up due to the heat of the body, mercury expands and it starts to flow through the thin capillary thread at a certain level. The new level of mercury indicates the body temperature. The reading of the temperature does not change even after removing the thermometer from the mouth because the kink in the capillary does not allow the mercury to flow back. Therefore, the new level of mercury does not change. To bring the mercury back in the bulb, the thermometer needs to be jerk or swing sharply a few times. This would allow the mercury back to the glass bulb.

What is the design of a clinical thermometer?

Design of the clinical thermometer: Here we discuss a clinical thermometer which comprises of a glass tube with the scale inscribed on it as shown in Figure 1. One of the tube ends is filled with liquid mercury which is of red colour. An extremely thin capillary tube runs through the middle of the glass tube. There is a small kink capillary thread near the neck of the bulb.

How to bring mercury back into a thermometer?

To bring the mercury back in the bulb, the thermometer needs to be jerk or swing sharply a few times. This would allow the mercury back to the glass bulb. Advantages of mercury: Mercury is the most commonly used material in different types of thermometers for various reasons.

What is the temperature of a body?

Temperature: The temperature of a body is basically a measurement of the degree of hotness or coldness. The molecules of a gas or liquid or a solid are in constant motion. This motion of molecules constitutes the kinetic energy of each molecule. As a matter of fact, the temperature is nothing but the average kinetic energy of all the molecules present in the body. Greater is the kinetic energy, higher is the temperature. In addition, the temperature is one of the seven standard physical quantities which cannot be derived from any other quantity. There are three main scales known as Celsius (0C), Fahrenheit (0F) and Kelvin (K) on which the temperature is to be measured.

Where is the mercury thermometer placed?

The thermometer is placed inside the mouth of the patient to measure the body temperature. As the temperature of mercury in the glass bulb rises up due to the heat of the body, mercury expands and it starts to flow through the thin capillary thread at a certain level. The new level of mercury indicates the body temperature.

When was the first thermometer invented?

The first clinical thermometer was invented by Thomas Clifford Allbutt in 1866. As the name suggests, Clinical thermometers are used for clinical purposes, mainly to measure the human body temperature by the doctors. The early clinical thermometers used to be large in size and took a longer time to measure the temperature.

How are digital thermometers used?

These thermometers are used for measuring the temperature by the means of an electronic circuit. The information captured is sent to a microchip that processes it and gets displayed numerically on the digital screen. They are easy to use, inexpensive, and accurate. Digital thermometers can be considered to be advanced thermometers that are used for measuring body temperature.

Who invented the thermometer?

Daniel Gabriel Fahrenheit is considered to be the father of thermometer. He was a German physicist who dedicated his life to science and inventions. The modern mercury thermometer was invented by Fahrenheit. He is also credited for the invention of the mercury-in-glass thermometer.

Why are mercury thermometers not used?

Mercury is a poisonous liquid that can cause health hazards. Mercury thermometers are used to provide accurate temperature readings. It used to measure the temperature under the arm, orally and rectally.

What are the two types of thermometers?

Here, we will discuss the two types of thermometers, namely, clinical thermometer and laboratory thermometer.

What is the universal instrument used to measure temperature?

Thermometer (thermos: hot; metron: measure) is the universal instrument used to measure temperature. Temperature and heat are two words that often confuse people. For example, how do you explain the hotness of an object? What is the measure or basis for that hotness? The answer to that is temperature.

How to check if a thermometer is accurate?

To check if a thermometer is accurate, we need to insert the stem of the thermometer in the ice water such that the stem is at least an inch deep without touching the glass. Wait for a minute or less so that the thermometer registers the reading of the ice water.

What is the definition of temperature?

By definition, the temperature is the measurable extent of hotness or coldness. It is a mathematical representation of heat. There are different units to measure temperatures, like Celsius (˚C), Kelvin (K), and Fahrenheit (˚F).

What are the uses of thermometers?

There are a plethora of uses of the thermometer in the field of medical science, meteorology, monitoring thermodynamic or chemical or various physical processes, food technology, engineering applications and many more.

How does a clinical thermometer work?

Working of the clinical thermometer: This thermometer must be kept clean and sterilized before taking the temperature of the patient. The thermometer is placed inside the mouth of the patient to measure the body temperature. As the temperature of mercury in the glass bulb rises up due to the heat of the body, mercury expands and it starts to flow through the thin capillary thread at a certain level. The new level of mercury indicates the body temperature. The reading of the temperature does not change even after removing the thermometer from the mouth because the kink in the capillary does not allow the mercury to flow back. Therefore, the new level of mercury does not change. To bring the mercury back in the bulb, the thermometer needs to be jerk or swing sharply a few times. This would allow the mercury back to the glass bulb.

What is the design of a clinical thermometer?

Design of the clinical thermometer: Here we discuss a clinical thermometer which comprises of a glass tube with the scale inscribed on it as shown in Figure 1. One of the tube ends is filled with liquid mercury which is of red colour. An extremely thin capillary tube runs through the middle of the glass tube. There is a small kink capillary thread near the neck of the bulb.

How to bring mercury back into a thermometer?

To bring the mercury back in the bulb, the thermometer needs to be jerk or swing sharply a few times. This would allow the mercury back to the glass bulb. Advantages of mercury: Mercury is the most commonly used material in different types of thermometers for various reasons.

What is the temperature of a body?

Temperature: The temperature of a body is basically a measurement of the degree of hotness or coldness. The molecules of a gas or liquid or a solid are in constant motion. This motion of molecules constitutes the kinetic energy of each molecule. As a matter of fact, the temperature is nothing but the average kinetic energy of all the molecules present in the body. Greater is the kinetic energy, higher is the temperature. In addition, the temperature is one of the seven standard physical quantities which cannot be derived from any other quantity. There are three main scales known as Celsius (0C), Fahrenheit (0F) and Kelvin (K) on which the temperature is to be measured.

Where is the mercury thermometer placed?

The thermometer is placed inside the mouth of the patient to measure the body temperature. As the temperature of mercury in the glass bulb rises up due to the heat of the body, mercury expands and it starts to flow through the thin capillary thread at a certain level. The new level of mercury indicates the body temperature.

When was the first thermometer invented?

The first clinical thermometer was invented by Thomas Clifford Allbutt in 1866. As the name suggests, Clinical thermometers are used for clinical purposes, mainly to measure the human body temperature by the doctors. The early clinical thermometers used to be large in size and took a longer time to measure the temperature.

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