Thermometers do not expire, but they do have to eventually be replaced. Digital thermometers will last about 3 to 5 years, while mercury thermometers will last indefinitely as long as they aren’t cracked or damaged.
Also to know is, can low battery affect thermometer?
Digital thermometers can become less accurate when their batteries are low or when they’ve been dropped from a height as low as five inches!
Likewise, do digital thermometers go bad?
Do Thermometers Expire? Thermometers do not expire, but they do have to eventually be replaced. Digital thermometers will last about 3 to 5 years, while mercury thermometers will last indefinitely as long as they aren’t cracked or damaged.
Do digital thermometers need a battery?
Digital Thermometer Replacement or Backup Battery
Make sure you have a Replacement Battery for Digital Thermometers within reach of your examination area. … The Duracell 384/392 battery guarantees a storage time of four years, making it available when you need one for your digital stick thermometer.
For digital thermometers:
Test every six months or so (depending on frequency of use) to make sure the thermometer works properly, using either the ice water or boiling water method. Many digital thermometers have reset buttons. If the accuracy is off, adjust the thermometer to the proper temperature using this button.
Digital thermometers provide accurate readings in about 1 minute or less.
Place the thermometer tip under the tongue. Hold the thermometer in the same spot for about 40 seconds. Readings will continue to increase and the F (or C) symbol will flash during measurement. Usually, the thermometer will make a beeping noise when the final reading is done (usually about 30 seconds).
A factor that needs to be considered is how you took your temperature. If you measured your temperature under your armpit, then 99°F or higher indicates a fever. Temperature measured rectally or in the ear is a fever at 100.4°F (38°C) or greater. An oral temperature of 100°F (37.8° C) or more is a fever.
As long as the thermometer is ready for measurement, it offers the same accuracy. When battery power is too low, the thermometer shows a low battery symbol and does not perform any measurements until the battery is replaced.
The battery may last a long time with normal use. However, if the battery symbol is indicating a very low battery (by blinking), or if the thermometer no longer starts or beeps, then the battery needs to be changed. If the thermometer shows LO, this doesn’t mean the battery is low, but that the temperature is low.
Differences between measurements can also result from the following factors: … Put the device on the table in the room where the measurement is taking place and let it cool down first. Your room temperature is too low or too high. Use your thermometer at temperatures between 10.0 °C/ 50.0 °F and 40.0 °C/ 104.0 °F.
It is standard practice for the majority of digital thermometers to display a “LO” sign when turning the device on. This means “LOW TEMPERATURE”. This is because these types of thermometers are made to measure Body Temperature, so when outside the body, the temperature is usually LOWER.