Characteristics of a thermometer
What are the characteristics of a good thermometer?
- high thermal capacity.
- easy readability.
- high sensitivity.
What are the characteristics of a digital thermometer?
Digital thermometers are temperature-sensing instruments that are easily portable, have permanent probes, and a convenient digital display. The way a digital thermometer works depends upon its type of sensor. Sensor types include resistance temperature detector (RTD), thermocouple and thermistor.
What are the features of laboratory thermometer?
Laboratory thermometers measure temperature with a high level of precision for applications such as experiment monitoring, instrument calibration, materials testing, and maintaining a sterile work environment.
What are the characteristics of mercury 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 is the function of thermometer?
A thermometer is an instrument that measures temperature. It can measure the temperature of a solid such as food, a liquid such as water, or a gas such as air. The three most common units of measurement for temperature are Celsius, Fahrenheit, and kelvin.
What is a special characteristics of mercury?
It has a solid surface that is covered with craters like our Moon. It has a thin atmosphere, and it doesn’t have any moons. Mercury likes to keep things simple. Mercury spins slowly compared to Earth, so one day lasts a long time.
What is inside a thermometer?
The small silvery ball in a mercury thermometer can be dangerous if the glass breaks and the mercury is not cleaned up properly. The mercury will evaporate and can contaminate the surrounding air and become toxic to humans and wildlife. Each thermometer contains about . 5-1.5 grams of mercury.
Which metal is used in thermometer?
Mercury is used in thermometers, since it is liquid metal which has relatively high coefficient of expansion. Hence, the slightest change in temperature is easily notable when it’s used in a thermometer.
What are the advantages of digital thermometer?
Benefits Of A Digital Thermometer vs Mercury Thermometer
Digital thermometers can read temperatures fast and with high accuracy. They are handy and easy to use; you can even carry the thermometer in your bag. The display is easy to read. A digital thermometer isn’t expensive.
Where are digital thermometers used?
Digital thermometers are used in industry and in the home, in applications including food preparation, manufacturing, medical and scientific testing and procedures.
What is digital thermometer answer?
Digital thermometers contain a small computing mechanism and a resistor. A change in temperature causes the sensor to notice a change in resistance. The computer converts the difference in resistance into a difference in temperature and offers a digital readout in degrees.
What materials are used in digital thermometer?
The tip of the Thermometer contains thermistor to measure temperature. It is a ceramic semiconductor which is bonded in the tip with temperature sensitive epoxy. It is covered with a cap so to prevent it from the outer world. The cap may be made up of metal or stainless steel.
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.
How accurate are thermometers?
Always keep in mind that temperature readings vary, based on how the thermometer is administered: Rectal thermometer readings will be around 0.5°F (0.3°C) to 1°F (0.6°C) higher than oral temperature readings. Tympanic thermometer readings are typically 0.5°F (0.3°C) to 1°F (0.6°C) higher than oral temperature readings.
How many types of thermometers are there?
Here, we will discuss the two types of thermometers, namely, clinical thermometers and laboratory thermometers.
What are the two main types of thermometer?
Answer: The two types of thermometer are clinical and laboratory thermometers. Clinical thermometer is used to measure body temperature however laboratory thermometer is not used for the purpose of measuring body temperature.
What is used to measure temperature?
Thermometer is used to measure the temperature of any object.
Who invented thermometer?
Galileo Galilei invented a rudimentary water thermometer in 1593 which, for the first time, allowed temperature variations to be measured. In 1714, Gabriel Fahrenheit invented the first mercury thermometer, the modern thermometer.
How do you read a thermometer?
Most thermometers have two scales for temperature, Fahrenheit and Celsius. Read the numbers for °F (degrees of Fahrenheit). Each long line is for 1°F temperature. The four shorter lines between each long line are for 0.2°F (two tenths) of a degree of temperature.
What are the 3 main types of thermometers for food?
Types of Food Thermometers
- Dial Oven-Safe (Bimetal)
- Digital Instant-Read (Thermistor)
- Dial Instant-Read.
What were the first thermometers called?
Thermoscopes were the earliest types of thermometers and they only showed changes in temperature but didn’t show numerical values. One of the first thermoscopes was developed by Italian inventor, Galeleo Galilei in 1593.It used water as the liquid and glass bulbs inside an open tube.