Types of Thermometers
1) Mercury thermometer
History:
The mercury-in-glass or mercury thermometer was invented by physicist Daniel Gabriel Fahrenheit in Amsterdam (1714).
How does it work?
The main element of a mercury thermometer is a capillary tube. The tube is sealed on both sides of the nutria and she pumped the air. At one end of the tube is a reservoir of mercury. To measure the temperature there is a special scale. Scale deposited on the bar attached to the tube. Scale measurement range from 34 to 42 degrees Celsius. To accurately measure the body temperature, each degree on the scale consists of 10 units of 0.1 degrees Celsius.
To return to the initial position of the thermometer in order to further the application and temperature measurements, it is necessary to shake the " thermometer ", thus returning the mercury back into the tank.
The benefits of a mercury thermometer:
• Medical mercury thermometer, due to its characteristics, whose performance is most accurate, and highly similar to the gas thermometer readings, which is considered the reference thermometer. Therefore mercury thermometer precisely measures the temperature thermometers rest of the human body.
• While other less mercury thermometer exposed to extraneous factors and conditions of temperature measurement.
• Construction of mercury " thermometer " allows its disinfection by full immersion in disinfectant, therefore suitable for health and medical institutions.
• Maximum thermometer primitive design provides ease of use and accessibility.
The limitations of a mercury thermometer:
• Long time measures the temperature of the body. The average temperature measurement must last at least 5-6 minutes, and for the most accurate measurement of weight req...
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...• When measuring the temperature in the armpit for the most accurate results while measuring the temperature much longer than the declared minimum. In most models, there is a strict rule in the manual " after the beep the end of the measurements should hold the thermometer still so many minutes." Therefore, the measurement of temperature is necessary to pinpoint separately, which is not very convenient.
• Most models, especially cheap household model cannot be washed and disinfected. Such a possibility is necessary to clarify the purchase, ask a sales assistant or read the operating instructions for the thermometer.
• Requires periodic replacement of batteries. While conventional batteries will last for 2-5 years, depending on frequency of use, the charge they may end up in the most inopportune moment. You should always have a spare set of batteries.
Diagram:
First, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder. This water was then poured into the styrofoam cup that will be used to gather the hot water later. The water level was then marked using a pen on the inside of the cup. The water was then dumped out, and the cup was dried. Next, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder, and the fish tank thermometer was placed in the water. Once the temperature was stabilizing in the graduated cylinder, the marked styrofoam cup was filled to the mark with hot water. Quickly, the temperature of the regular water was recorded immediately before it was poured into the styrofoam cup. The regular/hot water was mixed for a couple seconds, and the fish tank thermometer was then submerged into the water. After approximately 30 seconds, the temperature of the mixture leveled out, and was recorded. This was repeated three
Abbott, M., Lin C., Martian, P., Einerson, J. (2008). Atmospheric mercury near Salmon Falls Creek Reservoir in southern Idaho. Journal of International Association of Geochemistry. Volume 23 issue 3. www.sciencedirect.com/science/article/pii/
Measure and record the temperature of the water in the Styrofoam cup. Leave cardboard cover on until the heated metal is ready to be transferred into the calorimeter.
The first component of the MUST involves measuring the patient’s height and weight to establish their Body Mass Index (BMI). BMI is the’ relationship b...
Disinfecting toys, surfaces, utensils, and bedding should be part of a regular routine in order to prevent the spread of germs which can cause illness.
middle of paper ... ... different from what it should be. To solve this problem a thermostatic water bath could be used as stated above. * If the stop watch was stopped to early or late, again the overall reading would not be as accurate as it could have been.
Temperature: Oral temperature 101 degrees or greater; axillary (armpit) temperature 100 degrees or greater; accompanied by behavior changes or other signs or symptoms of illness- until medical evaluation indicates inclusion in the facility. Oral temperature shall not be taken on children younger than 4 years (or younger than 3 years if a digital thermometer is used). Rectal temperature shall be taken only by persons with specific health training.
In this paragragh I will be telling you about three scientist Ander's Celsius, Daniel Fahrenheit, and Lord Kelvin. I will be telling you when and where they lived and the melting and boiling points on there scales. Ander's Celsius was born on November 27th 1701 in Uppsala, Sweden. Anders created the Celsius thermometer scale. On Anders thermometer scale the melting point of water is 100 degrees celsius, and the boiling point on the scale is 0 degrees celsius. Daniel Fahrenheit is the next scientist I will tell you about. US is one of the few country's that still use Fahrenheit. Daniel Fahrenheit was born on May 14, 1686 in Danzig. Daniels tempeture scale is known as Fahrenheit. The tempeture of which things melt at on the scale 32 degrees fahrenheit,
Mercury exists in several forms. The forms are: elemental or metallic, inorganic, and organic mercury compounds. Elemental mercury can be found in electrical switches, glass thermometers, dental fillings, some medical equipment, and fluorescent light bulbs. Inorganic can be found in some disinfectants, batteries, folk culture medicines, chemistry labs, and red cinnabar miner...
The only way to ensure that sterilization has occurred is to use the biological monitoring methods. This is because these are the only tests done which show whether or not actual microbial life has been killed. Biological methods are the only ones which are recommended by the CDC (Centers for Disease Control and Prevention), the AAMI (Association for the Advancement of Medical Instrumentation), the AMA (American Medical Association), OSHA, and OSAP (Office Safety and Asepsis Procedures Foundation)
The last part of experiment 5, was learning about specific gravity and temperature. Specific gravity does not have any units, it is unitless. When measuring for the temperature, we used a thermometer to calculate the Celsius of the water, 10% sodium chloride, and isopropyl alcohol. The specific gravity uses a hydrometer to measure the gravity of the liquids. Using the hydrometer, to figure out the measurements we have to look at it from top to bottom. The water for specific gravity was .998 while the temperature of it was 24
The limitations to this vital sign though are to understand and know the different types of thermometers. Many aspects can affect temperature such as exercise, age, stress and surrounding weather and environment. It is important to make sure the patient is relaxed and hasn’t been doing strenuous activities shortly before being assessed (Berman, 2015) . For a healthy adult, the normal body temperature should be around 37°C. Anything over that is considered a fever (Martha Keene Elkin, 2007). Similar to the other vital signs though, everybody is different and someone might have a slightly higher or lower temperature which is normal for them. There are many different types of thermometers. There are oral, rectal, chemical, tympanic and temporal artery thermometers as well as more (Berman, 2015). Depending on the person, different thermometers are used. Aspects such as being a child, not being able to move, being asleep while your temperature needs to be taken can all affect which type of thermometer a health care professional uses. For example, if a patient is asleep then it is very invasive to use an oral thermometer because you would have to open their mouth and then if they wake up they would feel very violated. My worry about taking temperature is which thermometer to use or if I could just use any. The difficult part was finding out whether there were special circumstances to use certain
A hydrometer would not be considered to be within calibration if it was not operating under the specific range of temperature outlined on its calibration report, as density changes with a change in temperature. It is not possible to remedy this, as a hydrometer is a precision instrument designed and calibrated to function at certain temperatures.
When the liquid level in both arms is the same, the pressure of the sample of gas inside the closed end must equal the pressure of the external atmosphere since the downward force on the two columns of liquid is then equal. When the liquid levels are unequal, the pressures must differ. The difference in pressure can be measured in units of length of the vertical column of liquid. The mm Hg, or its modern version the torr, originated in this use of the manometer. Mercury is particularly convenient for use in manometers (and barometers) because at room temperature it has low vapor pressure, does not wet glass, and has a high density. Other liquids such as linseed oil or water have also been used in manometers.