Quick Answer: What Are The Disadvantages Of Digital Thermometer?

Why does my digital thermometer read low?

It is standard practice for the majority of digital thermometers to display a “LO” sign when turning the device on.


This is because these types of thermometers are made to measure Body Temperature, so when outside the body, the temperature is usually LOWER..

Which type of thermometer is the most accurate?

Rectal thermometers are still considered the gold standard—they offer the most reliably accurate measurement of core body temperature. Roberts explained that rectal thermometers are recommended for use with newborns because “they are most accurate and it is important to know if a newborn really has a fever.

What are the advantages of digital thermometer?

Advantages of Digital Thermometers  Digital thermometers provide temperature readings in decimal points, for an accurate and specific reading.  They are also easier to read than their mercury counterparts.  It is faster than the normal thermometer in calculating readings.

Does digital thermometer have mercury?

Newer technologies include non-mercury liquids-in-glass as well as digital and electronic devices that use sensors to measure temperature. Thermometers that check body temperature in the ear, across the forehead, or have a digital display do not contain mercury. … The most concerning are mercury-containing thermometers.

How do you fix a digital thermometer error?

Resetting ‘Err’Press the on/off button to switch off the flexible tip or soother thermometer, then press the on/off button again to switch on the thermometer.Proceed as usual in measuring the temperature.

How do I know if my digital thermometer is accurate?

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.

Why do we prefer digital thermometer nowadays?

The temperature sensor is the mercury or the digital circuit board which converts the temperature into numerical values. Digital thermometer are used these days instead of clinical thermometers because: … Digital thermometer provide temperature readings in decimals which more accurate compared to mercury thermometer.

Do you add 1 degree to a digital thermometer?

Oral and axillary temperature readings are about ½° to 1°F (. 3°C to . 6°C) below rectal. Add these numbers to oral and axillary temperature readings for the most accurate reading.

Are glass thermometers more accurate?

As is true with most instruments, greater accuracy will likely cost more when measuring temperature. Liquid-in-glass thermometers without mercury are not as accurate, so they should be used when less precision and certainty is acceptable. … Because of this, accuracy can fluctuate based on the surface being measured.

Which thermometer is better mercury or digital?

1. Digital thermometers provide faster results. Digital thermometers provide fast results as opposed to mercury thermometers whose readings are slower to realize because you have to wait for the mercury to heat and then slowly rise to display the temperature.

Why do thermometers use alcohol instead of water?

Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. Pure ethanol freezes at -115 degrees C, while mercury freezes at -38 degrees C. Thermometers rely upon thermal expansion of the liquid in a bulb at the base of a thin glass tube.

Is digital thermometer safe?

Digital thermometers are safer than glass thermometers because these do not contain mercury. Normal body temperature range is 98.6 degrees F to 100 degrees F. Your child’s temperature can change with activity, eating, the amount of clothing he wears, or the time of day.

What are some of the disadvantages of using a glass thermometer?

Disadvantages. Liquid in glass thermometers tend to be fragile and hence easily broken, can only be used where the liquid column is visible, cannot be used for surface temperature measurements, cannot be read from a distance and are unsuitable for high temperature measurements.

Do digital thermometers wear out?

This is because the installed battery will last for 3 to 5 years. But, if the thermometer is used in a hospital, then you need to change the batteries often. Consider purchasing a digital thermometer with an auto shut function. This will go off on its own when it is done taking the temperature reading.

Are cheap digital thermometers accurate?

Digital thermometers A nice digital thermometer is good to have because it can be used throughout age ranges, provides accurate readings, and it’s cheap.