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using a thin capillary bore
using a thick glass stem
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∙ 11y ago
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By using closer markings
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How long should you keep a thermometer?
It is recommended to replace a thermometer every 1-2 years to ensure accuracy and reliability. If a thermometer is damaged, it should be replaced immediately.
How is accuracy of a thermometer improved?
A Thermometer's accuracy can be improved if it is placed in an area where there is not an object that touches it that can influence a temperature shift.
What should you do before using a thermometer?
Before using a thermometer, it is important to clean it with soap and water, rinse thoroughly, and dry it properly. This is to ensure that the thermometer is free from any contamination that could affect the accuracy of the temperature readings.
What is a laboratory thermometer?
A laboratory thermometer is used to check the temperature, or changes in temperature, of an object with precise accuracy.
How do you increase accuracy in a liquid in glass thermometer?
There are several ways:use a liquid whose coefficient of thermal expansion is near constant,use a liquid with low vapour pressure,use a bulb with a relatively larger bulb and thinner stem,calibrate the thermometer carefully.
How a thermometer can be callibrated?
A thermometer can be calibrated by placing it in a temperature-controlled environment, such as an ice bath or boiling water, and adjusting the reading to match the known temperature. This process ensures the accuracy of the thermometer readings and allows for corrections to be made if there are any discrepancies. Calibration should be done regularly to maintain the reliability of the thermometer.
How do you know if thermometer is reading correct?
You can check the accuracy of a thermometer by immersing the sensor in a mixture of ice and water, which should read 0°C (32°F), or boiling water, which should read 100°C (212°F) at sea level. If the readings are off significantly, the thermometer may need calibration or replacement.
What precautions should be taken while using a laboratory thermometer?
Handle the thermometer carefully to avoid breakage. Avoid touching the bulb of the thermometer with bare hands to prevent inaccurate readings due to body heat. Always calibrate the thermometer before use and store it properly when not in use to maintain accuracy. Follow proper disposal procedures if the thermometer breaks or malfunctions.
Before choosing a thermometer for a specific job what should you know?
Before choosing a thermometer for a specific job, you should know the temperature range required, the accuracy needed, the response time, the environmental conditions (e.g. humidity, pressure), and any calibration or certification requirements. Understanding these factors will help you select the most suitable thermometer for the job.
What is the most suitable thermometer for measuring boiling point of water?
A digital thermometer with a range of up to 100 degrees Celsius and high accuracy would be most suitable for measuring the boiling point of water. It should be able to quickly and accurately display the temperature at which water boils, which is 100 degrees Celsius at sea level.
How does a large bulb increase sensitivity of a thermometer?
A large bulb increases sensitivity of a thermometer by allowing for more air to expand or contract, resulting in a greater change in temperature being detected. The larger surface area of the bulb also allows for more efficient heat transfer between the air and the thermometer, improving its accuracy and responsiveness to temperature changes.
Is it safe to use rubbing alcohol in a simple thermometer?
No, it is not safe to use rubbing alcohol in a simple thermometer. Rubbing alcohol is a disinfectant and can affect the accuracy of the thermometer readings. It is recommended to use a thermometer as per the manufacturer's instructions.
