How to use a mercury thermometer, how to use a mercury thermometer

Mercury thermometer is a common household thermometer, I believe many friends have used this thermometer, so, what is the use of mercury thermometer? What should I pay attention to when using a mercury thermometer? In fact, the use of mercury thermometer is relatively simple, and friends who want to know how to use mercury thermometer may wish to continue to look down.

First of all, before use, be sure to check whether the thermometer is damaged, a broken thermometer cannot be used, and you must avoid hard objects when throwing the thermometer, so as not to break the thermometer.

Pay attention to the timing of the measurement, the body temperature will change after eating, drinking, exercising and sweating, so avoid these times, if there are these conditions, it is best to rest for half an hour before measuring, if it is for the baby to measure, to avoid the baby crying, so as not to measure the results inaccurately.

After the examination, it is necessary to see the mercury column on the thermometer, that is, whether the current temperature is below 35 degrees, and then put it under the armpit, clamp it, sit quietly for 5 minutes, and then take it out.

After taking out the thermometer, do not shake it, do not touch the metal head of the thermometer with your hands, turn the thermometer slightly, you can see a column of mercury money, and the number of the line is the measured body temperature.

After the thermometer is used, it is best to wipe it with alcohol, on the one hand, it can be disinfected, on the other hand, alcohol is volatile, it can be the problem of mercury column down, and then it is good, it must be placed out of the reach of children.

Precautions: Mercury is toxic, do not use once broken.

How to use it correctly:

First, observe the integrity of the mercury thermometer, whether the lower mercury tank is complete, whether there is overflow, and whether the glass tube in the upper part is obviously broken, cracked, and mercury overflow.

The second step is to hold the top of the mercury thermometer and throw the mercury into the storage tank of the mercury thermometer, and the temperature should be below 35 degrees.

In the third step, hold the top and glass end of the mercury thermometer, place the mercury thermometer in the patient's armpit and clamp it tightly for 5-10 minutes. When the patient's temperature is consistent with the temperature of the mercury thermometer, observe the indication of the mercury thermometer.

Precautions for the use of mercury thermometers

Mercury thermometer as a traditional thermometer, it is estimated that most people know how to use it, first of all, the thermometer degree must be thrown below 35, and then the mercury end of the thermometer is placed in the armpit deepest, clamped to ensure that the mercury and ** are in close contact, maintain 5-10 minutes to read the reading, and then wipe it clean with toilet paper.

If there is sweat under the armpits, it is not recommended to measure at this time, or wait until it is wiped clean before taking the measurement, otherwise the measurement results will be inaccurate. If you have drunk a hot drink, or have just finished strenuous exercise or just taken a shower, you need to be quiet for 30 minutes before taking the measurement.

Many people can't bear to measure it, especially babies, so it is very common to release the thermometer before the time comes, and then it needs to be re-measured and the time must be recalculated.

Usage. 1. Before using the thermometer, the head of the thermometer should be disinfected with alcohol.

3. Then the display shows the temperature of the last side measurement as shown in Figure B (if the last measurement is, the well lasts for about 2 seconds.) The display may then display a "Flash" symbol as shown in Figure C, indicating that the thermometer is on standby. (If the room temperature is higher than 32, the thermometer will display the room temperature without showing as shown in the D figure, while the " " symbol keeps flashing).

4. Use a thermometer to measure body temperature. The temperature value displayed during the body temperature measurement gradually increases, while the " " symbol is constantly flashing.

5. When the body temperature rise rate is less than 0,1 within 16 seconds, the " symbol stops flashing, and the thermometer beeps for about 5 seconds, at this time, the thermometer is measured, and the displayed body temperature value can be read.

6. The thermometer has an automatic shutdown function, which will automatically shut down within 10 minutes after the end of the measurement. However, in order to prolong the battery life, it is recommended that the user press the power button to turn off the power after the measurement is over.

Mercury thermometers are generally triangular prisms that can be seen in only one direction when looking at readings. That is, if you look in the direction (slightly turned) between the scale and the angle between the two sides of the number, you can see the reading.

How to use the thermometer:

1. Throw the mercury mercury of the thermometer below 35 before use.

2. Place the mercury end of the thermometer on the top of the armpit (i.e., deep in the armpit), and clamp the thermometer tightly with the upper arm to avoid dislocation or falling;

3. Measure for 5-10 minutes; Take out the thermometer, the thermometer has thermal inertia and should be read after the thermometer reaches a steady state. Readings should be taken in the highest tangent of the temperature convex meniscus with a direct gaze.

4. Hold the tail of the thermometer in one hand, that is, away from the end of the mercury column, so that the eye and the thermometer are kept at the same level, and then slowly rotate the thermometer, and the corresponding temperature value can be read when you see the thick mercury column from the front. Pinch the top of the thermometer with two fingers and shake it gently, and you will see a metal wire.

5. When reading, pay attention not to touch the mercury end of the thermometer with your hands, which will affect the mercury column and cause inaccurate measurement, and the mercury thermometer should be perpendicular or inclined to the flow direction of the tested working fluid.

6. The oral thermometer is placed under the tongue of the injured and sick, the lips are closed, and the direct reading is taken out after three minutes of measurement. An oral thermometer can also measure temperature under the armpit, but the measurement time is five minutes and the reading is added to the degree Celsius.

7. If there is sweat under the armpits, wipe it dry and then measure.

8. If the measurement time has not arrived, release the armpit, you need to re-measure, and the time should be recalculated.

9. All factors that affect the actual body temperature (such as drinking boiled water or cold drinks, etc.) should be avoided before measuring the body temperature, and drinking hot drinks, strenuous exercise, emotional agitation and bathing should be measured after 30 minutes.

10. The maximum temperature value of the glass thermometer is 42, so the temperature should not exceed 42 when storing or cleaning, and the thermometer should not be put into hot water for cleaning or used to measure the temperature of water and other objects.

11. After use, wipe the thermometer with toilet paper so that it can be used next time or by others.

5 38 degrees is low-grade fever, 38-39 degrees is moderate fever, 39-40 degrees is high-temperature, and above 40 degrees is ultra-high fever.

After the mercury thermometer has been used for a period of time, we often find that the thermometer will have different degrees of mercury cracking and so on. At this point, it should be repaired in an appropriate manner. At present, the repair methods of mercury thermometers are mainly divided into cold repair method and hot repair method.

1. Cold repair method: put the temperature measuring package of the thermometer into a mixed liquid of dry ice and alcohol (the temperature cannot exceed minus 38) for cold contraction, so that all the mercury broken in the capillary is ** into the temperature measuring bag.

2. Thermal repair method: put the side temperature of the thermometer into a liquid with a temperature slightly higher than the upper limit of the measurement, reconnect the broken part of the mercury column, and then slowly take out the thermometer and re-cool it to a normal temperature in the air.

When looking at the mercury line, as long as you hold the tail of the thermometer with your hand and turn it slightly, you will see a clear line of mercury. Before using the thermometer, be sure to grasp the tail of the thermometer and shake it gently to make the scale of the thermometer below 35 degrees. It is then placed under the patient's armpit and clamped for about 10 minutes.

After ten minutes, take out the thermometer of the thermometer, hold the tail of the thermometer, and turn the thermometer, at this time, you can see the mercury line, and this scale is the measured temperature of the human body.

Precautions for thermometer use

After the thermometer glass bubble is immersed in the liquid to be measured, wait for a while for the thermometer to stabilize before taking a reading. If you don't wait for the liquid column in the thermometer to stop rising and falling, you won't be reading the true temperature of the water.

The glass bubble of the thermometer should remain in the liquid during the reading, and the real temperature of the water should not be read when the water surface is taken out during the reading, and the line of sight should be level with the upper surface of the liquid column in the thermometer. Otherwise, it will make the reading high or low.

If it is a body thermometer, shake the thermometer before using it to make sure the reading is below 35, then make sure to place the thermometer in the middle of the armpit (armpit temperature is usually measured) for at least 5 minutes, then take out the thermometer, turn to the side, and look at the scale that is flush with the red tick mark.