| Fill a glass with crushed ice. Add clean water until the glass is full and mix. Wait approximately three minutes before placing the sensor on the thermometer in the ice-filled water. Wait about thirty seconds and check that the thermometer indicates 32 ° F.
Method 1: ice water
- Fill a glass with ice cubes and then fill it with cold water.
- Stir the water and let it sit for 3 minutes.
- Stir again and place the thermometer in the glass, being careful not to touch the sides.
- The temperature should be 0 ° C (32 ° F). Note the difference and move the thermometer if necessary.
So your thermometer is eternal. He is very vulnerable. So be extremely careful especially as there is mercury in the game and you will never be able to catch it! The metal (tip) contact can loosen over time and lead to incorrect display.
Insert the thermometer stick at least one inch deep into the ice water without the stick touching the glass. Wait for the thermometer to detect it, which usually takes a minute or less. The thermometer is accurate when it reads 32 ° F or 0 ° C. (My three thermometers have some accuracy for this purpose.
Sometimes this can be remedied by cooking the probe in an oven at 120 ° C for 1015 minutes, as this will evaporate the moisture trapped in the probe. Make sure you only connect the probe + cable to the oven, not the plug or transmitter.
Insert the thermometer or probe into the ice water. Make sure the sensor area is submerged. Set the thermometer to read 32 ° F (0 ° C). Hold the calibration nut with a wrench or other tool and turn the thermometer head until it reads 0 ° C.
Pacifier thermometer was 72% sensitive and 97% fever specific. Sensitivity increased to 92 percent when oral measurements were corrected upward by 0.5 ° F, but specificity dropped to 76 percent.
Before calibration, fill a plastic beverage cap with regular table salt. Add enough water to wet the salt, but not too much so that the water is on top of the salt. Place a zippered envelope on a flat surface. Put the cap in the bag with the hygrometer.
Here, however, the storage time can limit the shelf life. For home use, therefore, we can expect a shelf life of 3 to 5 years. If a thermometer is used in a hospital, where it can be used 5 times a day, the battery can last from 1 to 1.5 years.
LO stands for low temperature, not dead battery. The digital thermometer in the armhole blinks Lo to indicate that it is detecting a temperature that is too low to read as it only drops 32 degrees Celsius and the ambient temperature is below 32.
Glass and mercury are a safety hazard if the thermometer breaks. Additionally, mercury thermometers are more accurate in some areas than others. They all have to be individually calibrated due to slight deviations in the glass. Digital thermometers are therefore simpler, cheaper and safer.
The principle of operation of a thermometer is quite simple. A known amount of liquid (mercury, alcohol, or hydrocarbon-based liquid) is drawn into a glass tube. The fluid expands or contracts when the air is heated or cooled. The flask jar is formed by heating and squeezing one end of the glass tube.
Expansion of liquids in a thermometer. Due to the different expansion properties, liquid-in-glass thermometers show different measured values for temperatures other than fixed points. A thermometer that uses a gas gives the same readings regardless of the gas used.
The well known 98.6 degrees is a normal temperature that is taken orally. In other words, a mouth temperature of 100 degrees before bed can actually be normal. An underarm temperature of 99 degrees in the morning can be the onset of a fever. Anything above 100.4 degrees F is considered a fever.
a. Before and after use, clean the digital thermometer with alcohol or warm soapy water, then rinse it with cold water, says parental consultant Jennifer Shu, MD, co-author of Heading Home with Your Newborn: From Birth to Reality .