Why is Digital Thermometer Better than Mercury Thermometer?
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The mercury
thermometer has been used for temperature measurement in our life quite a
historic time. With technology development, a digital thermometer is taking
over the mercury thermometer today. How come the digital thermometer is better
than the mercury thermometer? Here we come up with three reasons to analyze.
1. Digital
thermometer is faster on temperature measurement result providing
The digital
thermometer gauges our body temperature by using electronic circuits. When the
probe is heated by our body, it energizes the circuits with electric power and
strengthens the amperage. The higher our body temperature is, the more powerful
the electric flow is, and the stronger the amperage is. When the amperage is
switched into data and shows on the thermometer screen, we can read the results
immediately. The whole process is very fast in only 15-20 seconds. It works in
the same theory as IR
temperature gun. On the other hand, while, the
mercury thermometer has to be 10-15 minutes so that we can see the results on
the calibration tube.
2. Digital
thermometer is more accurate for temperature measurement
Furthermore,
digital thermometers are more accurate on body temperature than the mercury
thermometers. The accuracy of a digital thermometer could be 0.1 ℃ with 0.01 ℃ errors. There is a
thermocouple sensor installed in the probe of the digital thermometer. It is
highly sensitive to temperature and will calculate it with accurate data on the
screen. As to the mercury thermometer, whose operational principle is mercury
expanding under heat, the accuracy is not as good as digital thermometers.
3. Digital
thermometer is safer for use on house living
Since we
would have to take our body temperature frequently at home these days, the
digital thermometer is the best device because it is safe for usage. The
mercury thermometer is made of glass and mercury. As we know, it is fragile.
Moreover, mercury is a toxic chemical, which will contaminate human bodies
after released. It is not easy to clean up if the thermometer is damaged and
mercury splashes. The digital thermometer is made of hard plastic, PET
material, and rubber. Same as the infrared
thermometer, it is safe for our bodies.
What’s more, it is not easy to break.
From the three reasons above we can see that digital
thermometer is better than a mercury
thermometer on faster and more accurate measurement results providing, safer
for use in our life. Taking our body temperature at home every day is necessary
because it is a good way to avoid Covid-19 from spreading. All in all, you may
leave your comments if you have any opinion about the analysis above.
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