It is no news that all of us are susceptible to illnesses. And one such malady is certainly a fever.
As a parent, it is necessary to nurse your child and keep a check on the temperature.
For added exactness and in turn, enhanced results one can always rely on a digital thermometer.
Choosing the right thermometer is half the struggle. Procuring an ideal one that offers precise readings, faster gauging of temperature and can be relied upon, is quite a task itself.
Best Thermometers for 2021 – Quick Look
(Click on the name of any thermometer to read it’s in-depth review)
|Vigorun Thermometer||35 Readings|
|Metene Thermometer||20 Readings|
|Caroune Thermometer||32 Readings|
|Chooseen Thermometer||35 Readings|
|Aimuon Thermometer||35 Readings|
|Ankovo Thermometer||20 Readings|
1. iProven DMT-489 Thermometer
The iProven has come up with a dependable ear thermometer that provides painstakingly precise results.
All the progressively advanced features come in a compact design which makes it quite easy to carry around.
One can always rely on the certified calibration technology to provide you the best results. Offering two distinct functionalities, it can be comprehensively used.
Our In-Depth Review:
The product has been competently designed that makes it befitting not only for infants but also adults. Conclusively, with this product, you bring professional excellence right at your doorstep. Measuring up to 1.8 x 1.7 x 6.1 inches and weighing close to 4.2 inches, this is built to perform.
It offers two distinctive functionalities- a forehead and ear function. While the forehead mode can be used for an indicative quick scan, the ear mode is for exact measurement. While the former is suitable for all ages, the latter can be a great way to measure up the temperature of babies who are six months or older.
To use the head mode, one has to press the hold button, swipe the forehead from left to right and to finish with, release the button. Alternatively, to make use of ear mode, one has to pull the ear back and up, aim the eardrum and snap the ear button.
Suiting itself in unmatched performance, it is used extensively as professional medical equipment and is trusted by professionals and pediatrics alike. It requires no cover and one can effortlessly keep a record of the last twenty readings.
To ensure unsurpassed results, the following steps can be carried out. Firstly, one has to make sure that they are at room temperature with the thermometer for at least a good thirty minutes. And lastly, keeping the appliance clean after every use will guarantee better results.
- It provides scrupulous results.
- Integrates clinical calibration and is effortless to use.
- Quick reading with precise notification beeps.
- Documents the last twenty temperature recordings.
- Prone to wavering temperatures with time.
- Extremely susceptible to water and readings in an uncontrolled environment maybe rectal.
- Prerequisite of thirty-minute acclimation for best results.
From the above comprehensive information, it is obvious that barring a few shortcomings, this thermometer fares really well. Fail-safe accurate results, a handy build and the fever alarm that qualifies as an uncomplicated guide for anyone uncertain of what qualifies as a fever, make it quite a favorable selection among experts and households alike. The lucid, backlit display delivers easy-to-read measurements. Conclusively, this is positively an outlay that you can go on a bender and use long-term without any complaints.
2. iProven DT-R1221A
A recent addition to the iProven range was the 2019 Digital Oral and Rectal Thermometer.
Equipped with an algorithm that effectively and accurately measures the temperature in a mere 10 seconds, this handy apparatus doubles as an oral thermometer for adults and a rectal thermometer for an infant.
This makes it extremely convenient to use as a rectal thermometer for infants and babies as the result is quick.
Our In-Depth Review:
This compact thermometer is meticulously designed for safe use on infants and babies as a rectal and oral thermometer and the small form factor of the device, weighing in at only 1.6 ounces, makes it extremely portable and allows for convenient storage.
iProven is a long time player in the market for consumer-grade thermometers and similar medical equipment and has proved time and again that they are reliable in making consistently stable accurate results. The company claims improved accuracy compared to earlier models due to better optimization of the algorithm and rigorous testing and feedback. This claim does seem to hold up in our testing as well.
Rectal and Oral thermometers provide a more reliable measure of the inner body temperature compared to external body temperature thermometers. That makes the thermometer a better measure of illnesses than some other models featured in this review.
The backlit display equipped on the device is extremely intuitive and user-friendly. The user interface is uncluttered and easy to use for a non-medically inclined common folk.
Although the thermometer is clinical grade and is commonly used in medical circumstances, it is aimed at the household as the interface even features a smiley scale that determines the severity of the fever, a smiling face on the display indicates all is well while a frowny face expectedly indicates a severe medical-grade and one that requires medical attention. The UI also allows users to toggle between Celcius and Fahrenheit on command.
- Results in a mere 10 seconds (Best in Class).
- Clinical calibration from the factory.
- Included hard case for hygienic storage.
- Clean UI and easy to use.
- The lack of storage memory of previous recordings.
- The battery tends not to be super long-lasting.
- Recalibration takes up to 45 minutes which can be a real pain in an emergency.
The small package is deceivingly effective, But, what the iProven rectal/oral thermometer has going for it is speed. The 10 second reading time is head and shoulders above the competition and the device does not sacrifice accuracy to achieve this result. The small forgettable parts of the thermometer are the battery and the freakishly long calibration time but other than that it is a great product that should 100 percent be in your consideration for a household thermometer.
3. Vigorun Thermometer
The Vigorun temporal and ear IR thermometer is a compact dual function Infra-red external temperature monitoring thermometer that is very similar to the offering from iProven but differs in a few key aspects.
The Vigorun device is equipped with an extremely useful third mode where it could be calibrated to measure the temperature of the surrounding weather or of any object that the user chooses to measure.
This gives it a new dimension of usefulness and convenience.
Our In-Depth Review:
The Vigorun device is an all-round well-built thermometer that integrates some very interesting functionality into a compact package. It is equipped with a new enhanced chip that the company claims measure the temperature of whatever it is attempting to measure within a 0.3-degree accuracy range.
The large backlit LCD panel on the thermometer makes it convenient and easy to use in low-light situations. The reading speed is about par as one would expect from a consumer-grade IR thermometer. The display interface is clean and uncluttered with easy to understand icons that give the user an easy understanding of what mode the thermometer is in and how much battery is left in the device.
The device also contains an LED that changes color according to the severity of the fever measured. Green for normal temperature, yellow for fever and red for a temperature high enough to seek medical attention.
The essential mute mode which lets the user completely turn off the notification sounds and the built-in alarm setting is a lifesaver when the device is to be used with infants possibly in their sleep. The iProven device for external temperature lacks this essential function and it is one very noticeable omission.
The real party trick from the Vigorun device is its ability to measure the temperature of any object it is pointed at with surprising accuracy. The infrared technology works extremely well to give the user a surprisingly accurate measurement of the temperature of an object.
This feature can come extremely handy in a number of real-life practical situations. Maybe you want to know the exact temperature of your steak without touching it or maybe you want to see which part of the pan is coldest before you grab it.
- The large storage memory of 35 measurements.
- Clinical calibration for professional medical accuracy.
- Flexible probe for easy and comfortable use.
- Large backlit LCD that’s very readable with large icons.
- Relatively slow measurement time and sensitive to the elements.
- The battery indicator on the display is buggy and sometimes shows a full battery even when the battery is depleted.
- Not waterproof.
Although being pricier than its competition, the Vigorun device proves to be tough competition for the other players with its triple functionality. It is a versatile device that does not limit itself to the singular use of just measuring a fever which in our opinion makes it worth the slightly upscale price tag. The non-waterproof nature is a noticeable flaw in the design and maybe fixed in later models. Coming in on the heavier side of 4.8 ounces, the device is still portable and makes for an excellent household thermal measurement device.
4. Metene Thermometer
They hit the market with some promising assets such as it being clinically tested and FDA approved.
They have notable features such as night vision, memory recall, and dual temperature mode among many others.
It caters to trustworthy precision while being easy to use and carry around.
Our In-Depth Review:
It should come as no surprise that they come equipped with the most advanced medical infrared technology for accuracy and reliability. It is only recommended to you by experts after a series of rigorous tests to confirm its constancy and dependability.
The ease with each one can alter between the forehead and ear mode is noteworthy.
The memory recall is a remarkable function that this thermometer has in store for the users. It can store and summon up to 20 readings for babies and adults, available to help you keep a track of temperature changes.
The thermometer comes equipped with a fever alarm. When measuring temperature in either of the two modes, the thermometer will sound 7 short ticks and the LCD display will flicker if the reading results exceed 37.5℃/99.5℉ to signal that the subject may have a fever.
- Backlit night vision.
- Fever alarm.
- Memory recall function.
- Offers two mode.
- The cover is made of plastic that feels discounted.
- Some users have recorded inconsistent temperature.
Metene Thermometer is a solid device that is backed by science and a plethora of great reviews. Its unique technological advances and easy-to-use design gives it a leg up on the competition. Overall, it is a smart choice for anyone needing to get an accurate temperature reading with minor trouble.
5. Caroune IR thermometer
The Caroune IR thermometer is a ‘do it all’ thermometer with all the functionalities, bells and whistles that are bound to be a major player in the household commercial grade thermometer market.
This is a device that combines the major utilities and modes of the other major players but priced much more aggressively.
Our In-Depth Review:
The Caroune device is aimed at the consumer that wants it all from their device but is also price-conscious. The device has triple functionality where it can be toggled between inner ear mode, forehead mode or could be calibrated to measure the temperature of any object it is pointed at. The ergonomic design of the handle makes it easy for the user to use the device on themselves without contorting their hands into weird angles.
The device is FDA approved and is used commonly in professional medical settings and is calibrated to an accuracy range of up to a maximum error of 0.2 degrees. The upgraded algorithm and chipset provides relatively quick measurements and were accurate in our testing.
The device is 100% mercury-free and is manufactured from non-toxic materials to aid the use of infants and toddlers. The device holds up to a maximum of 32 previous readings in memory which is not the best in the segment but also certainly not the worst. The average household consumer would not miss the 3 extra measurements in memory.
The user interface is simple, easily understandable and the LED panel is robust. LED panels also tend to last longer than some other LCD panels we have seen from the competition
The device does lack a mute function which can be annoying when in use with toddlers or infants as the notification beeps are built-in and cannot be turned off. The device also lacks a battery measurement function that displays how much battery you have left in the device.
- Well calibrated IR sensor that provides quick accurate measurements.
- The reasonable storage memory of 32 measurements.
- The flexible and comfortable inner ear probe.
- Triple functionality.
- Sensitive to water and does not ship with a hard waterproof case.
- The inner ear probe tends to get dirty and is non-removable making it difficult to clean.
- Lacks a mute function.
The Caroune device does everything the competition does for a cheaper price. The sacrifices the user would make for that price point is a non-removable probe and slightly inferior memory capacity which in our opinion is not that much of a letdown. The device is well-calibrated; the display is well designed and is overall an excellent package for the price you pay for it.
6. Chooseen Thermometer
Coming at a dimension of 1.4 x 0.7 x 6.4 inches, it weighs 3.7 ounces.
The package comes with a thermometer, a portable pouch, two AAA batteries and a manual.
This thermometer is commonly used as a basal thermometer, a necessity in every home. It’s designed for all ages and not only supports the forehead or ear function but also take room/object/liquids temperature.
Our In-Depth Review:
Backed by clinical studies, the Chooseen temporal thermometer is a much sought after choice amongst medical professionals. It has been specially constructed out of specialized medical ABS materials and has been Certified by CE and FDA for its commendable performance.
So, if you are in quest of a reliable thermometer, we don’t think it gets better than this. Adding a feather to the safety is its build with being completely mercury-free, making it more guarded than the conventional and time-honored mercury thermometer.
For providing accurate results along with guaranteeing first-class and superior performance, it comes adopted with an enhanced processing system, applying the modernized and highly deft sensor probe in addition to the newly developed smart chip. We found it faster, more dependable and safe.
We were greatly impressed by the easy switchability of the temperature modes(-℃ and ℉). More so by the instantaneous reading(1-second fast measurement) and memory storing capabilities of the device. (Records up to 35 sets of readings). The thoughtful ergonomics helps raise the handgrip to a new level of comfort.
Talking about the LED light display, it does not fail to provide clear readings in the dark. This feature allows you to easily record the temperature without waking up your baby.
Another feature that we particularly liked was the fever warning system. The infrared thermometer displays lights as an indicator of fever. It lights up in green, orange or red to as per the conditions. When the measurements exceed 99.5 ℉ or 37.5℃, the thermometer blinks red and beeps softly. The colors green, orange and red are reserved for normal, light, and high fever respectively.
For better tracking of the changes in body temperature, the thermometer comes with a provision to store 35 sets of readings. Adding to the convenience is one can perform in a row and get the average of readings as the last result.
- It comes with an accurate fever alarm that is color-coded.
- Offer several temperature modes including forehead, ear, and object.
- Reading recall up to 35 memory slots.
- Excellent ear probe covers that present high precision.
- Some users have reported misleading or defective battery reading.
- Lacks an ear cover.
This infrared thermometer best option for you, if you looking for an efficient digital thermometer for your home. Constructed off well-selected materials and components to secure the safety of users, it is also uncomplicated to use. It provides you a precise temperature reading within a few seconds on its display. This thermometer comes decked with excellent features and barring the deficiency of an ear cover, all is well. Definitely, well recommended.
7. iProven DMT-489 (New)
Built to last, it is made of high-quality materials and featuring modern technology, it has qualities that compete with high-end models.
It has been designed with the health and wellness of families in mind, this forehead and ear thermometer from iProven is a reliable choice that has ranked highly among family units since its release.
It offers quick, digital readings, a variety of modes of use, and a reputation for accuracy.
Our In-Depth Review:
Weighing around 4.3 ounces, this thermometer finds wide utility amongst all sections. Often hailed as the go-to solution amongst caretakers who wants to maintain the temperature variation of their toddler. Consequently, one can hold this as the heavily recommended choice by doctors and pediatrics as it has been clinically tested.
This product hits the market with the newest Infrared Lens Technology. Furthermore, its precision-engineering monitors even the smallest rise in temperature owing to which one can always rely on it for accurate fever detection.
It has been intelligently calibrated for ear and forehead measurements. This makes it trouble-free and reliable to use. One has to simply remove the cap of the thermometer to switch from the forehead mode to the ear mode. Adding to it, the display is bright and displays the temperature long enough to make sense of it.
A feature which many users found to be interestingly practical is the fever alarm that comes with emoticon like the result. In the case of fever, it displays a frowning face and in other cases, it features happy faces. This can be attractively utilized while recording the temperature of kids.
Furthermore, the readings are made in 1 second and thus the thermometer is really fast in measuring the temperature. To keep your thermometers clean, you are provided with a pouch. Also, decked with it are batteries to give you leverage.
The functioning of the thermometer is a breeze. As the first step, one has to acclimatize the thermometer with the room temperature. And after that, recording the temperature takes less than a few seconds. The users are advised to check the lens after every use and maintain the sanitation by cleaning it after every use.
Another of the commendable proponent is the protection policy for 100days, with an added money-back guarantee. The buyers can always rely on the customer support team in case of any queries as they are at all times ready to go the extra mile with you.
- Recommended by pediatrics and doctors.
- Accurate fever detection.
- Calibrated for ear and forehead measurement.
- Fast reading and consistent results.
- Users cannot mute the beep sound.
- Some users have marked inconsistent readings over time.
At the end of the day, this thermometer offers a good value for its asking price. Customers are impressed with its accuracy and overall technological design, and it has been approved as safe for use as well as reliable by credible sources.
With its accurate fever detection, top-notch calibration for ear and foreheads, coupled with fast reading and consistent reading, we don’t hesitate to recommend this thermometer to any family who could find it useful.
8. Aimuon Thermometer
This thermometer has much to offer. It hit the markets with an impressive German sensor probe and transducer.
Weighing around 4.8 ounces, this product has been expansively tested for accuracy.
It cleverly incorporates infrared technology that helps it make readings sure and precise.
Our In-Depth Review:
This thermometer has been clinically tested, keeping in mind the wellbeing and precision it has promised to offer.
The chief claims of Aimuon thermometer are undoubtedly safety and quality are. On top of point measurement, to ensure stable and accurate readings, it supports sliding measurements.
The product comes with a color-coded backlight for a fever alarm. While modal temperature is markedly displayed in green, yellow indicated slight fever, and red is a pointer for high fever. It also comes with beeps that remind us of the temperature abnormality, if any.
The thermometer supports ear and forehead mode along with added object mode. All that one has to do is open or close the probe lid, to measure the ear or forehead temperature. Its application is not only limited to babies but also adults.
One can also find memory recollection in this thermometer. It offers the provision to store up to 35 reading memory. The last readings help keep track of the health data of family members. It is thus, flawlessly suitable for household use.
- Excellent after-sale service.
- Memory slot to save up to the last 35 recordings.
- It provides three distinctive modes to gauge temperature from the forehead, ear and even records object temperature.
- Three colors backlight for fever alarm.
- The forehead scan can be 1 degree different than the ear scan.
Even though adults may acknowledge and appreciate the swiftness of ear and forehead thermometers, these devices shine brighter while you’re making a note of your little one’s temperature. With its effortless switchability from forehead to ear functionality, easy-to-read, color-coded display that does away with the approximation out of classifying a fever. Definitely, we would recommend this.
9. KeenHealth Thermometer
Known for its utmost precision, this thermometer is primarily known for its exactness and flexibility.
The overhanging lean tip renders the product all the more flexible to the changing needs of the consumer.
With a few added benefits, this thermometer is worthy of much appreciation
Our In-Depth Review:
Laid on board with an attractive casing, this thermometer is quick to attract interest and rouse one’s interest. Weighing around 1.8 ounces, the product is easy to carry around and use conveniently.
The flexible tip of the thermometer is perhaps its biggest highlight. This causes it to be practically used orally without scraping the tongue especially if one might want to use it on toddlers.
Expectantly, the thermometer bags a fever alarm. The backlit display is color-coded and alters hues with rising temperatures. The intelligent fever alarm directs you to take swift and timely actions based on the recordings. One can always listen to the sound of the beep, to know when the thermometer has successfully made notice of the temperature.
The manufactures seem to have taken special note at making the readings clear and comprehensible and have incorporated the build to integrate larger, clearer numbers while the measurement is being recorded.
It comes with a quick and easy readout. Furthermore, there are options to save your temperature readings. This will help one to analyze the last readings and make a note of the recent trend.
Having this one thermometer is essential for the whole family as its use and application extend beyond the limitations of age.
To top it all, the equipment comes with an accurate readout. There is nothing more than you can anticipate from a good thermometer that this appliance doesn’t satisfy.
The thermometers essentially transform into a hand-on gadget once you have gotten a hold of it. While some users have markedly recorded slight difficulty gauging how to use it, it sure gets easier with time. The major problem experienced was the difficulty it took to switch from unit to other. But a close reading of the manual would easily solve the problem.
- Lightweight, easy, and quick.
- Displays two decimal places while recording temperature.
- Excellent price point.
- Large display, the mute feature.
- Users may experience slight difficulty switching from one unit to another.
Overall, this product is a commendable one. Offering, accurate results in decimal format, it does not simply get better than this. This is an impressive take considering it comes with a creditable price value. The large display paired along with its backlit display and mute feature raises its utility all the more. The slight intricacy of the conversion from the unit measurement can be solved without much hustle.
10. Ankovo Thermometer
Perfect for infants as well as adults, this product boats of multiform user modes, a remarkable one-second measurement, and fever alert by the means of a backlit display,
The package comes with a thermometer, a storage pouch, and two AAA Batteries.
In addition, there is a user manual to assist you in acquainting yourself with the working.
Our In-Depth Review:
This baby thermometer comes equipped with an exceptionally high sensitivity sensor. Therefore, one can easily rely on it to generate accurate results. Additionally, it has been clinically tested and delivers temperature readings with unfailing accuracy within the time span of 1-3 seconds.
And this infra-red digital thermometer provides a fever alarm system. The display is so designed to offer color-coded backlight (in green or red) that serves as a clear indication of fever. While green is reserved for normal, red is for fever.
Another advantage it enjoys being its ease of application. Measuring your temperature with this thermometer is as straightforward and uncomplicated as pointing and pressing a button. A maximum of 20 previous readings is available and conveniently helps you track the changes in body temporal temperature in addition to monitoring the health of family members.
Not to mention that the thermometer supplies a sensor for room temperature and a compensation sensor for recording ambient temperature. The latter senses the alteration of the measurement environment in real-time, lessen the influence of the ambient temperature on the measurement and correct the accuracy of the body temperature acquisition.
- Accurate results guaranteed with the high sensitivity sensor.
- Provides room and ambient compensation temperature sensor.
- Displays the temperature instantaneously.
- Provision to store up to 20 readings.
- The suitability of the ear mode is limited to that of babies.
- Certain models are prone to wavering temperature differences of 1 of 2 degrees.
Convincingly, this product offers a great steal. Incorporating a high sensitivity sensor, this thermometer does perform agreeably. The readings are accurate and quick all the while being easy to use. The striking backlit display along with the fever alarm ensures the adequacy of this product. The memory storing provision facilitates the users to keep a record of the temperature readings and study a pattern of the temperature markings. All in all, this thermometer is a strong contender for the best thermometer
Thermometers – Buyer’s Guide
What Is a Thermometer?
A thermometer is a simple instrument used to determine temperature changes. Typically, it consists of a thin glass bulb and a calibrated tube containing a liquid that rises and falls with temperature change. However, in recent times we have seen the rise of digital thermometer that makes use of infrared technology to determine temperature change.
How Does a Thermometer Work?
Traditional thermometers that used mercury or alcohol to determine the temperature changes have a cerebrated tube that shows any changes in hotness. The liquid in the tube goes up and down proportionately, depending on the change in temperature. Colored alcohol slowly replaced mercury owing to the safety concerns of mercury when exposed to the environment. However, they work using the same principle of expansion when heated and contracting when subjected to a cold climate.
Numbers placed along with ea long the tubes mark the temperature changes. Besides, we have a spring thermometer that contains a spring coil that expands when heated. A pointer attached to the spring indicates the temperature changes on a calibrated surface. However, these types of thermometers are less accurate compared to digital or bulb ones.
Why Is It Important for Every Household to Have a Thermometer?
Thermometers at home are no longer a luxury item to use in the kitchen but a necessity to check on your Kid’s health and also for adult use. You do not have to wait until morning to determine how a fever is while you can get an accurate digital thermometer for the same. Besides, food safety is quite important, as some countries such as Canada have made it absolute to have one in the kitchen.
A food thermometer is essential in determining the condition of your food to avoid food poisoning, especially for seafood. Many food poisoning cases can be prevented if undercooking can be avoided as well as cooking fresh food. When food is undercooked, the harmful bacteria in food do not perish hence cause harm to our bodies, and the results can be fatal.
It is advisable to avoid visually gauging your food and get accurate information on the status of your meal. Here some of the common problems of neglecting the condition of your diet.
- You are undercooking your meals, especially meats.
- Bacteria in foods are failing to die if the cooking does not reach certain temperatures.
- Meats cooked in a sauce or have a coating cannot be checked physically if they are cooked.
- When the meat is cooked under high temperature, the outside may appear prepared while the inside is raw.
Nonetheless, while some consumers tend to undercook their meals, some tend to overcook in an attempt to avoid food poisoning. Both cases lead to losses that could be avoided if only they used a thermometer to check the condition of their meals before, during, and after cooking.
A food thermometer is not expensive to acquire, with some going for less than $20, making them very affordable. Thus, you do not have a reason why you should not be having a thermometer in your kitchen.
Moreover, you should go the extra mile and get an accurate thermometer to check your temperature regularly. Consult your doctor before getting one to ensure you get a precise device for your home use. Raising children will require you to get an accurate thermometer, especially when they are below five when they cannot express how they feel accurately.
Types of Thermometers?
Over the years, thermometers have evolved from simple equipment to sophisticated systems using infrared technology to detect temperature change. Here are the types of mercury you are likely to find in the market today.
Here is a digital device that provides information accurately and swiftly when checking the temperature. It comes in varying sizes and shapes. Besides, they can be easily found at your local pharmaceutical shop or a grocery near you.
However, be sure to read instructions before use and always use it for the intended purpose.
Most come with a sensor attached at the tip of the thermometer taking temperature readings with ease.
Automatic Ear Thermometer
Here is a type of infrared thermometer as it reads the temperature reading by detecting the infrared heat inside the ear. For best results, always read the instructions before use to get the most accurate readings. Though they provide actual results for children, they are not very useful for infants below the age of 3 months. Besides, if the ears contain too much wax, the results will not be accurate.
They are devices used to take a person’s temperature by placing them on the forehead. However, they are not as accurate as digital ones. They are placed on the artery of the head to read the infrared heat signature from the head. Besides, to get actual results using the device, you need to be knowledgeable on how they are used.
They are commonly known as plastic thermometers. They are not very accurate for taking temperature changes as they indicate skin temperature only.
They are also known as glass thermometer owing to the glass casing that holds the liquid mercury. The mercury thermometer takes accurate readings of the body temperature when placed beneath the tongue. The body temperature heats the mercury in the glass casing, and the point at which the mercury stops raising is the temperature reading.
Why You Should Quit Mercury Thermometers
When in yesteryears mercury thermometers were quite common, they are getting phased out due to the dangers they pose to the environment and the body when the glass casing breaks. It is essential to note they are not phased out due to their inaccuracy but the dangers posed by mercury when exposed to the environment. Mercury is a dangerous metal to both the environment and the human body; hence it is phasing out in thermometers.
The shiny ball in the glass tube is called mercury. When the glass tube breaks accidentally, it evaporates and can cause harm to the wildlife and humans if not cleaned properly. Besides, handling mercury requires specialized equipment that is not found in our homes. One tube of mercury contains 5-1.5gms of mercury. However, 1 gram of mercury can contaminate one acre of land and 20 acres of a water body. As such, it requires lots of caution when handling mercury as it has the potential of harming innocent lives.
To mitigate such dangers, a campaign to stop the use of a mercury thermometer was launched to ensure we live in a clean environment. Thus, if you have a mercury thermometer in your house, contact your local authorities to safeguard its property disposed of.
Safe thermometers to consider:
- Alcohol thermometers
- Digitals thermometers
- Gallium tin thermometers
There are non-mercury thermometers that are equally accurate and safe to use.
Dangers of Mercury
Mercury is a dense metal that exists as a liquid at room temperature with high electrical conductivity. When the glass bulb of your thermometer breaks, it is essential to use heavy-duty gloves to do the cleaning and dispose of the water discretely. When mercury turns into vapor, it gets back to the earth, and when accumulated in rivers and the soil, it will contaminate your fish and plants.
Mercury will pose immense dangers too:
Expectant mothers – mercury can be passed to unborn babies via the placenta or during breastfeeding. When that happens, brain growth is interrupted, and the nervous system gets affected as well.
Why Buy An Infrared Thermometer
Infrared thermometers are perfect for taking temperature measurements at a distance. Besides, they take relatively accurate temperature information without having to touch a body or object they are measuring. As such, they tend to be healthier as they cannot aid in transmitting an infection.
Besides, when measuring scorching surfaces, infrared thermometers come in handy, or when the surface being measured cannot be touched—typical uses of infrared thermometers.
Though most people do not consider an infrared thermometer as a cooking apparatus, they can be used to spot-check the progress of your cooking. Besides, in hotels, they are used to regularly check food temperature to ensure foods remain hot throughout the day.
When you are taking the temperature readings of a delicate object, you will need an infrared thermometer.
How Does an Infrared Thermometer Work?
An infrared thermometer is known for its distinct ability to measure temperature from a distance. The distance is relative as it can range from miles to an inch or closer. They are practical when other types of thermometers are not practical. When an object is fragile, very hot, or poses a danger when close, an infrared is the best option.
What They Do
They work using a phenomenon or principle called black body radiation. The reasoning behind the belief simply states anything with a temperature above the absolute zero contains moving molecules around it. Besides, when the temperature rises, the particles move at a higher speed, and as they move, emit infrared radiation. The radiation is not visible to the naked eye at is a type of electromagnetic radiation requiring spectrum light for it to be visible.
However, at higher temperatures, the radiation becomes visible, explaining why heated metal glow white or red colors. Infrared thermometers detect this radiation and record as temperature reading and display the results on a digital screen.
How They Work
Infrared light can be reflected or absorbed, just like the visible light. The thermometers use a lens to focus the infrared light to a detector called a thermopile. When the sun is absorbed, it is converted to heat, and temperature readings are taken. The higher the intensity of infrared, the hotter the thermopile gets and consequently records higher temperatures. Thus, if you are pointing a very hot object, the point will give higher temperature readings and the reverse.
Ear thermometers are types of infrared thermometers as they detect heat from the eardrum. Besides, the eardrum has the same temperature as the inside of the body. However, it is susceptible to touch and easily gets damaged when moved. As such, the need for an infrared thermometer to record the temperature.
Besides, infrared thermometers are used by firefighters to detect the source of a fire. The manufacturing sector uses the same devices to help in controlling machines and prevent any damage and accurate putting together products.
How to Use an Infrared Thermometer
The first step to using the thermometer is turning it on by gently pressing the trigger.
To complete the first step, you need to ensure the thermometer is on. However, you need to be wary of how different models get started. Thus, you need to consult the user guide to ensure you are doing the correct thing when turning it on.
Point the laser towards the object you want temperature readings.
When you turn on the infrared temperature, it will project a red light beam. Point the laser light towards the object you want to take the heat for a few seconds. However, you should check the distance limit of your thermometer and the duration you should keep it pointed to the object.
When using an infrared thermometer, you must get accurate information on how to use the device to ensure you get accurate readings. The distance varies depending on the device hence the need to get your facts right before use. However, you should get the thermometer as close to an object as possible. Thus, always get your spot ratio accurate to ensure you get actual results from your device.
The third step to using an infrared thermometer involves switching off the thermostat.
Keep pressing the thermometer trigger until you are done measuring the temperature of your object. When you release the trigger, the gun stops working, and no laser will be emitted. When you release the trigger, now check the temperature reading on the digital screen on your thermometer.
How to Calibrate an Infrared Thermometer
- When you purchase a new infrared thermometer, you will need to calibrate it accurately to ensure you get precise readings. Here is a simple procedure using an Ice Bath.
- Fill a glass to the top using crushed ice or a large glass with small cubes of ice.
- Add extremely cold until it gets about 1 inch of the glass or a few centimeters below the top of the ice.
- Note: If your ice floats the bottom of the glass, your water is warmer than the ice, and you should pour the excess water.
- Gently mix the blend and let it settle for a minute or two.
- Using a metal spoon gently scoop the ice sideways to isolate some water in the glass, or you can tamp down the ice to have a layer of water floating on top of the glass.
- Set your infrared thermometer at 0.95 or 0.95 (emissivity setting)
- Hold your thermometer directly above the ice bath with the lens pointing to the ice bath.
Note: If you hold the thermometer too far from the surface of the ice bath or place it at an angle, your measurements will include measurements of the glass and surrounding areas. Thus, you need to have it pointing the ice bath accurately and close to the ice bath.
While being careful of the field of view of the infrared light (size and shape of the ice bath), you can now press the trigger button and take the measurement. Besides, you need to hold your hands steady and focused on the ice bath to avoid any errors when taking this measurement.
If you perform the exercise accurately, and your thermometer calibrated correctly, your device should display accurate readings.
Features to Look for in a Thermometer
With the market flooded with thermometers, it is challenging to choose what best works for you as everyone wants their words carefully when selling their device. As such, you will need some top tips and features to check out before deciding on the right thermometer for you. However, you should first make up your mind on the intended uses of the thermometer to avoid getting a thermometer you do not need in the first place.
Convenience of Use
When getting a thermometer, always consider how easy it is to use the thermostat. For instance, when you are buying a thermometer for a senior citizen who might be having shaky hands, you will need one that delivers results instantly. Always go for the simplest and easy to use the device as that will serve your needs better.
Accuracy is your next concern when you get a convenient device. The accuracy of a thermometer is considered on the grounds of its ability to deliver accurate readings. For instance, if you are considering to purchase a thermometer for checking your baby’s body temperature, you will need an exact device. Besides, get a thermometer that has been tested and proven to work for the intended use.
Gone are the days you had to wait for everything to get accurate results. When looking for a thermometer, instant gratification works better. This is because you get instant results of the object you wanted temperature readings taken. Taking temperature readings should take the shortest time possible as temperature changes take place in seconds. Thus, when making a thermometer for either kitchen use or taking body temperature, get one that delivers results instantly.
Units of Measurements
You must take note of the units of measure to avoid unnecessary calculations every time you are taking temperature readings. For instance, Indians are used to Celsius units, while other parts of the continent prefer Fahrenheit readings. Though some people tend to ignore this feature when purchasing a thermometer, get one that uses your preferred unit of measure of added convenience.
Finally, when choosing your preferred thermometer, avoid mercury or glass thermometer at all costs. They are not only fragile but also hazardous to you and the environment. The device you choose should be reliable and sturdy and come with casing to secure it when not in use.
FAQs related to the Thermometers
What Type of Thermometer Is Best for Babies?
When deciding on the best thermometer for your child, it is vital to consider the following three age groupings. Zero to 3 months. If your child is within this age bracket, use a digital rectal thermometer to take temperature readings. Besides, some research findings indicate an artery thermometer might be useful in giving accurate temperate readings for children within this age. Three months to 4 years of age. If your child is within this age group, a digital thermometer can be used on the armpit. Besides, you can use an artery thermometer to take the temp readings. However, you will have to wait for your toddler to get to 6 months before you use an ear thermometer to take the readings. When you are in doubt of any temperature, reading always takes rectal temperature measurements. Four years and above. When kids are four years of age and above, you can train them to place the thermometer below the tongue or the armpit. Besides, you can use a digital ear thermometer to take an accurate reading.
What Are New Thermometers Filled With?
Most people are eager to know what fills the new generation of thermometers. Some are filled with colored alcohol, while some use sensors to take temperature readings. Besides, you will get spring thermometers that make use of a coiled spring.
Is the Red Stuff in the Thermometer Poisonous?
Though most people tend to associate liquid thermometers with mercury, some are filled with alcohol that comes with red coloring. The red stuff is not as dangerous as it is colored alcohol.
How do I know if my thermometer is accurate?
You should get your thermometer calibrated when new and checked every six months to ensure you get accurate results. Besides, every time you drop it or handle it roughly, you should have it checked and calibrated. You can test your thermometer in boiling water or in an ice bath to see how accurate it responds to temperature readings.
What Ear Thermometer Do Doctors Use?
An ear thermometer is one of the most common mercury used to detect any fever quickly. It makes use of infrared technology to detect any temperature change. They are quick, convenient, and easy to use for family use. Thus, to answer the question, doctors use an infrared thermometer. They are familiar with pediatricians owing to their ease of use and accuracy.
When Did They Stop Filling in Mercury Inside the Thermometer?
Years of research have proven mercury to be a poisonous substance when exposed to the environment. Mercury reaches the situation in two distinct ways. Either through thermometers breaking or coal-fueled power stations making use of contaminated coal. Research into the matter shows coal power plants cause half of the mercury released into the environment. Mercury vapor can waft into the atmosphere from broken thermometers hence the phasing out of the devices.
How Do I Reset a Thermometer?
Here is a simple way to reset your thermometer when you need to use the boiling water technique though we have several methods out there. Boil a pot of distilled water, the use of distilled water is essential as it eliminates any impurities that lower the boiling point of water. Once the water starts to boil, leave it for 30 seconds then insert your thermometer. However, ensure the thermostat does not touch the surface of your pot either bottom or sideways. The temperature should be 100°C, record the difference, and adjust the contrast.
Can Thermometers Be Wrong?
Yes, thermometers go wrong and deliver wrong results. When you regularly drop a thermometer, it is likely to give inaccurate results. Besides, when using an infrared thermometer, always consider the spot ratio, or you will get the wrong measurements.
Where Do You Place an Oral Thermometer?
While taking oral temperatures may seem as easy as 123, it’s not as simple as it may look. Sticking a thermometer in any part of the mouth will not give accurate results as different parts of the mouth have varying temperatures. Thus, if you are looking forward to taking oral temperature measurements, it’s essential to place the device beneath the tongue. Here you get accurate results from the exercise and do not require extra tools for the procedure.
How Can I Take My Temperature Without a Thermometer?
Here is a common question people ask on how they can detect their temperature changes without having to use a thermometer. You can check if the skin is changing in color, especially the cheeks. If they tend to appear red, your body is likely to be in battle mode, and you could be having a fever. Thus, always check your skin changing in color and sweating continually when its cold and every other person is running for their jacket.