We chose this level of precision because we had a limited about of time to make increments. Handout.) This mark indicates 0°C or the freezing point of water. The ACCD370P is certified and… Related Products: High Precision Thermometers Make an accurate guess as to what the temperature of the material is based on the increments shown on your plastic strip. This will allow you to divide the thermometer (from 0°C to a 100°C) in intervals of 5°C. Calibration is the act of comparing a device under test (DUT) of an unknown value with a reference standard of a known value. Micro Precision’s accredited thermodynamic & chemical calibration lab services with temperature, humidity, life science, and pharma capabilities. ( Log Out /  The thermometer is now calibrated with intervals of 5°C. Change ), You are commenting using your Twitter account. Change ), You are commenting using your Google account. After use, clean the tip of the thermometer with cotton and alcohol. ThermoWorks operates an A2LA-accredited calibration lab to assist commercial and business customers. When touching the bottom of the hot plate with the thermometer will change the temperature because the bottom is hotter than the actual water. Mark at this distance a line. Having different sizes of the increments will, also, lead to inaccurate measurements of the degrees. Place the tip of the thermometer under the armpit. Take a beaker with 250 ml of distilled water. When doing this lab, we definitely found some errors that we could of been careful with. (e.g. Meanwhile, write next to the bottom line 0°C and next to the second line 100°C. Some values in the table should have an associated unit, please make sure to note that unit in your table. In the calibration lab, we used known temperatures to create our scale. Repeat these steps (add the number obtained to the line marked to get the next line which is 5°C more than the previous line) till you reach a 100°C. Turn the heat on to high level. It is possible that undistilled water contains other substances that could affect the temperature of the water, which would give us inaccurate data. Make sure the thermometer can’t move. Heat bath to desired range. This is the 10°C line. Let the thermometer adjust for 2 minutes and then locate the top of the red fluid within the thermometer. This is the 15°C line. This beaker of boiling water will help determine the 100˚C calibration on our thermometer. Automatic field calibration is easily performed: simply place the probe in a container packed with ice, fill with water, then press the…. To find the increments of measurements in between your two main calibrations, obtain a ruler and measure the distance between your 0˚C and 100˚C measurements. Take readings from calibrated thermometer and thermometer to be calibrated at The purpose of this lab was to calibrate a thermometer by using the boiling and freezing point of water. Comparison calibration (most common) • thermometer under test is compared to a more accurately calibrated temperature standard Calibration Methods Fixed point calibration (when accuracy is critical) • thermometer under test is compared to a natural phenomenon whose temperature is precisely known (e.g. Add distilled water till the 250ml line. This line represents 5°C. Add to that line the number obtained again. Alcohol thermometers are of lower accuracy than mercury thermometers, but are more commonly used in the chemistry laboratory because mercury is toxic and difficult to clean-up in the case of breakage. Remove thermometer from water and dry it off. Obtain a sheet of paper to record your results. The Ice-Water Method We believed that if we did by 1°C it wouldn’t be more precise (the lines wouldn’t be equally apart from each other). We used the millimeter marks on our ruler to add the increments in between our 0˚C and 100˚C measurements. Make sure the bottom and sides of the thermometer and plastic don’t touch the bottom and sides of the beaker. Align 0 inches with the 0°C mark. If you rushed through collecting measurements and didn’t allow the thermometer to adjust to the temperature of the material, then your data would be incorrect. Locate 2 beaker that your chemistry teacher has set up in your classroom. Let beaker with water on it so that it can cool down before handling. Experiment 4 Calibration of Temperature Sensors I. C) for a few minutes at the start of the experiment to allow readings to stabilise. Kizen Digital Food Thermometer for Kitchen, Outdoor Cooking, BBQ, and … Use water for (0–0°C) and silicon Oil for the temperature above 50°C. …and calibration of laboratory instruments and routinely used thermometers. Then, mark on the placard a small line where the alcohol is currently at. Each thermometer is individually factory calibrated. Learn how to properly calibrate a thermometer using the boiling water and ice water methods. Then, take thermometer and place a inches ruler next to the thermometer. In this lab, alcohol was used since it is safer, although less precise (because alcohol is more volatile than mercury and can vaporize in the thermometer and part of alcohol remains along the sides of the bore when the temperature drops). Set ruler and thermometer aside, and use beaker tongs to grab the beaker with hot water on the hot plate. The calibration method described below is relatively simple to carry out but requires close attention to detail. Fill both beakers with distilled water about two-thirds of the way full. Tape the non-calibrated thermometer to the long plastic card. Graduation Day: How to Calibrate a Thermometer, Graduation Day: Thermometer Calibration Lab Photos. Since we knew at what temperature water boils and when it freezes we could find the temperatures in between by dividing by certain increments that we thought were acceptable for our thermometer. Then find the number on the ruler that is next to the 100°C line. After placing the thermometer in the iced beaker for about 2 minutes and taking it out, we gently set it on the counter only to realize that we couldn’t find our sharpie. Scribd is the world's largest social reading and publishing site. There are two types of liquid-expansion thermometers: alcohol and mercury. As a chemistry student, it is important to know the purpose of a thermometer and how it works. If given more time, we would have either done increments of 5 or 1. Have your eye level with the liquid columns when taking temperature and length readings to avoid parallax errors We considered redoing that step of the experiment, but we were unfortunately working under a time limit. By taping it we make sure that our marks are where they should be. The purpose of a thermometer is to indicate the temperature of various materials, whether the temperature in a certain place (the classroom for example), or the temperature of a substance, the temperature of water, the temperature of the oven, the temperature of our body (so that we know whether we are sick or not), etc. Also, be sure you don’t burn yourself. Here's how: 1. The piece of plastic will serve as a sheet to write your calibrations on due to the fact that we are unable to write directly onto the thermometer. The accuracy of the results are also dependent upon the use of a high quality reference thermometer with a valid calibration certificate. Then place the thermometer with the plastic card in the water. Thermometer Calibration services can be delivered at your site or at our lab. Repeat Steps 19-20 with water at a different temperature (preferably, significantly different). This water in the beaker will be boiled and used to mark the boiling point or 100*C. Place beaker on a hot plate. When the thermometer is heated, the liquid rises and expands up the bore until the bulb reaches thermal equilibrium with the substance that is being measured. with the calibration experiments, the thermometers should be ranked best to worst in a table (see example table below). Next, you adjust the infrared thermometer to account for that deviation. It includes eight different temperature measurement devices and shows their characteristics and how to calibrate them against a standard. Place the non-calibrated thermometer in the boiling water. Write down temperature that your calibrated thermometer indicates. Gently submerge your thermometer into one of the beakers. Search Search Added ice into beaker to find out the freezing point of water. I also found it was helpful to start with two well-known measurements like the boiling and freezing point of water, and I would definitely recommend utilizing that technique when attempting to create any sort of tool that is used for measurement. By doing the calibration lab, we can now calibrate a balance. triple point of water 0.010 ºC) 6. Liquid-expansion thermometers are often used in chemistry labs due to the fact that they are safe and easy to read. Intervals of five provide a bit of precision and are easier to mark than intervals of 1°C. Then write down the temperature that the digital thermometer indicates. ). This will allow you to test the accuracy of your calibrated thermometer. Objective: The purposes of this experiment are to: (1) acquaint you with common thermometry instruments, (2) impart a fundamental understanding of the physical principles that underpin these devices, and (3) point out the respective advantages and disadvantages that these instruments offer. Wait a few minutes, until the alcohol in the thermometer has stopped rising (or until the thermometer has reached thermal equilibrium). Various metals can become brittle if not heated just right and to the proper temperature. 5.1.3 Put the beaker in an oil bath fitted with a stirrer. This may have affected the measurement we took for 0˚C because the thermometer may have already started adjusting back to room temperature by the time we had taken it out of the beaker and had found the sharpie. After the recording of the boiling and melting points we had to create a scale. This will be your 0˚C measurement (the temperature at which water freezes). Divide that distance by 10. (The temperature at which water boils.). Request A Quote Learn More Micro Precision’s accredited in-lab and onsite calibration services for a wide range of RF Test Equipment. I could definitely apply many aspects of what I learned in this lab to creating another measurement tool. It took us about 25 seconds to find the pen, which happened to be under a binder. 1.3 Experiment 1a - Procedure and Results Firstly two lengths of nickel chromium (Ni-Cr) wire and 1 length of pure nickel (Ni) wire, each measuring 30cm were cut from spools of the respective wires using a wire cutter. thermometers) need only be identified with their unique identification number for traceability to their associated records. Remove the thermometer and record your estimate. Essentially, we just kept the thermometer in the beaker until the red fluid had stopped moving and had adjusted to the temperature of the material. As mentioned in the paragraph above, we chose to use increments of 10 for our thermometer measurements. Thermometer H‐2610.7C, ‐2 degrees C to 300 degrees C., NIST certified. Let the thermometer adjust for 2 minutes and then locate the top of the red fluid within the thermometer. Fill a large glass … Alcohol also tends to wet the sides of the stem’s bore, which causes part of the liquid to remain along the sides of the bore when the temperature drops. Undistilled water may contain many different minerals in varying concentrations, which would affect the results of our experiment. Make sure the bottom of the thermometer (the red glass bulb) lines up with the bottom of the plastic. This will be your 100˚C measurement. While creating my calibrated thermometer, I discovered the importance of accuracy and the difficulties that came along with being precise and cautious. The number obtained tells you the difference in cm for every 5°C. There are a variety of commercial temperature monitoring devices available. Applied Technical Services (ATS) regularly performs thermometer calibration services. We considered doing increments of 5, but as mentioned before, we were under a time limit and assumed we wouldn’t have a lot of time to make smaller measurements. Put away ruler, marker, and beakers and all other materials, except for calibrated thermometer. The ACCD370P can be used to calibrate liquid-in-glass, digital and dial bi-metal thermometer; as well as laboratory instruments such as freezers, refrigerators, incubators, ovens, etc. NIST thermometer calibration: Temperature is a critical measurement for ensuring the safety and quality of many food products. For more accurate results, we could have timed how long we kept the thermometer submerged. ( Log Out /  In this experiment, it is required to measure the temperature of water bath and furnace by various instruments. Thermistors can be approximated by assuming a third-order function called the Steinhart-Hart approximation [ source on thermistor calibration ]: where T is the temperature calculated from the thermistor change in resistance, R . But, we were under a time restraint, so we figured we should just keep moving and assume that the thermometer had adjusted. These numbers allow you to calculate your percent error and how well you calibrated your thermometer. We validate the accuracy of instruments used in manufacturing, pharmaceuticals, and even aerospace. Placed the beaker onto hot plate to allow water to get to melting point. 5.1 Calibration Procedure 5.1.1 The thermometer for calibration shall be mercury in glass type. The hotter the temperature, the greater the height of the liquid. 4. We chose to scale our thermometer by 5°C because we thought it provided accuracy while being easy. Trescal provides full Thermometer Calibration services that are accredited and/or certified in accordance with ISO/IEC 17025. Distilled water was used to calibrate this thermometer instead of another substance because distilled water is uniform. Alcohol happens to be more volatile than mercury, meaning it can easily be evaporated at normal temperatures. While you wait for the water to start boiling, to save time, place ice in your other beaker. The more increments you have on a thermometer, the more accurate your estimates of temperature will be. Set beaker aside to dry or dry with paper towel if it’s not too hot. Related Products: Water Thermometer. Turn off the hot plate. A person typically performs a calibration to determine the error or verify the accuracy of the DUTs unknown value. When the water started to boil we then put our thermometer in and recorded our observation. Write down temperature that your calibrated thermometer indicates. The sealed keypad and ABS plastic case meet IP54 standards for splash resistance. I also learned the importance of following directions and procedures in an organized and timely manner. Again, you want a good amount of water and ice cubes in there so that the thermometer is accurate. Heat the water very slowly so that it is easy to take temperature and length readings simultaneously. This beaker of freezing water will help determine the 0˚C calibration on our thermometer. Add the number obtained to the 5°C line. Then proceed to label your measurements on the plastic strip by the increments you’ve chosen. We use thermometers in our everyday life, as well as in scientific experiments, as constants or to find out many things. Whether you need a thermometer for food and beverage quality control, blood bank refrigerator temperature, or even temperature readings for your pharmaceutical cold storage. You first determine the measurement deviation of the infrared thermometer from the correct temperature. Stir the ice water and let it sit for 2 minutes. Now find that number on the ruler. The smaller the increments, the more accurate your estimates of temperature will be. Larkspur: Redwood High School, 2015. How Do You Calibrate the Thermometer? 2.1 Associated materials and equipment While the beaker on the hot plate is warming up, take the thermometer out of its plastic container carefully and tear off two pieces of clear tape (each about 2 inches long). • The container must have crushed ice throughout to provide an environment of 32°F, so you may have to pack Make sure the bottom and sides of the thermometer don’t touch the bottom and sides of the beaker. Similarly, we can use objects which we know the mass of specifically and then write these masses down and create a scale. Wait until the alcohol in the thermometer has stopped dropping and is at a steady level (this is called thermal equilibrium), and then mark with the marker where the alcohol is at. Since we knew at what temperature water boils and when it freezes we could find the temperatures in between by dividing by certain increments that we thought were acceptable for our thermometer. ( Log Out /  Kizen Instant Read Meat Thermometer - Best Waterproof Ultra Fast Thermometer with Backlight & Calibration. Distilled water (in wash bottle or container), Long plastic card (used for marking the temps. Gently submerge the thermometer on the plastic strip 2 inches into the iced beaker. If you choose to calibrate your thermometer in increments of 5, divide the total distance by 5 instead. Although my lab partner and I tried our hardest to complete this experiment flawlessly, there were are few errors that could have possibly contributed to decreasing the accuracy of our thermometer. Three sources of error that we made was, not being completely accurate with the markings of the boiling point and melting point, touching the thermometer to the bottom of the beaker when it was on the hot plate, and not having the scale be exactly in the same increments. Remove the thermometer and record your estimate. Our finished scale went up by increments of 5. Change ), on Graduation Day: How to Calibrate a Thermometer. Although a thermometer is one of the most well-known and commonly used instruments in science, it is quite easy to misuse. (not the best sealed lab) our humidity has always been around the 30-40% range. Like any other measuring device, traceable calibration is periodically necessary to ensure that your temperature readings are correct, and Transcat's thermometer calibration services give you the peace of mind that comes from knowing your critical temperatures are on-point. These three errors contributed to much of the discrepancies. Find your plastic strip and place the thermometer about halfway in the middle of it. Let the thermometer adjust for 2 minutes and then locate the top of the red fluid within the thermometer. Place a piece of tape near the top and bottom of the thermometer and secure it to the piece of plastic. But, our teacher had instructed us to keep it in the beaker for 2 minutes. After putting ice into beaker we added water and put our thermometer into the iced water. Perhaps, if the thermometer had been larger and the ruler more detailed (with more numbers) we would have scaled it by 1°C, because we would then be more sure of the accuracy  of our lines. Temperature plays an important role within many industries and the processes they use on a day-to-day basis. We are taping the thermometer to a plastic card, so that we can mark on the plastic card where the alcohol isat when it is in boiling water and where it is at in the ice water. If the water in the beaker on the hot plate isn’t boiling yet, wait until it is. Change ), You are commenting using your Facebook account. Take calibrated thermometer and put in beaker with water that has a certain temperature and a digital thermometer. What is Calibrating Your Thermometer? In a liquid-expansion thermometer, an expansion liquid such as mercury or alcohol fills a small glass bulb that is attached to the bottom of a bored expansion column. Therefore, because we thought that doing it by 1°C wouldn’t make a difference (since we could guess the number pretty well if the temperature was between the 5°C increment), we scaled it by 5, to make it easier. In our lab, we were instructed to take the measurement of pure water and base our calibrations off of those measurements only. My partner and I also could have been more accurate when adding our own increments of 10. The built-in precision reference sensor works as an accurate temperature reference. The purpose of this lab is to experiment with calibrating and labeling an alcohol thermometer in a precise and accurate manner. For example when marking the boiling and melting point, if done incorrectly then you could mess up the entire scale leading to a non-accurate thermometer. After that check that the line are evenly spaced and that you have 21 lines total. Fill a glass with ice and then fill it with cold tap water. The coefficients C0 , C1 , and C2 need to be found using a non-linear regression method. Ice water method for thermometer calibration The Ice-Water Method: An easy way to calibrate your thermometer is to put it in ice water and adjusting it to read. Place both thermometers in melting ice (0 deg. This means that the alcohol within the thermometer can often vaporize into the stem of the thermometer. By now, the water on the hot plate should be a rolling boil. Water Bath Procedure: Place certified calibrated thermometer and thermometer to be calibrated in a water bath. Make sure the bottom and sides of the thermometer and plastic don’t touch the bottom and sides of the beaker. Experiment No1 [Calibration of Thermometers] - Free download as PDF File (.pdf), Text File (.txt) or read online for free. This will allow you to test the accuracy of your calibrated thermometer. 5.1.2 Take a 1000 ml beaker filled with about 850 ml of Silicon oil. Just like watches can run slow or fast, food thermometers are subject to... 2. Make sure that the bottom of the thermometer doesn’t touch the bottom of the beaker because this could cause the thermometer to be inaccurate. Distilled water is used because dissolved solutes in tap water can affect the boiling and freezing point of this water. DIY Calibration Do it yourself calibration is an option in many entry-level infrared thermometers. In the thermometer used in this lab, alcohol rises or expands when heated from a glass bulb, up an equally bored expansion column in a long glass stem. Many thermometers have a nut under their temperature dial that allows them to... 3. The thermometer we used in this lab, as well as the most common types of lab, indicate the temperature of certain things through the expansion of a liquid, usually alcohol or mercury. We are also discovering what is necessary for scientific instruments to measure accurately. Gently submerge your thermometer into a different beaker. Take calibrated thermometer and put in beaker with water that has a certain temperature and a digital thermometer. In one beaker, place 6-7 ice … This would have made our final results more accurate. Partnering with manufacturers, such as Vee Gee and Across, we can offer the highest quality Laboratory Thermometers to keep your lab safe, reliable, and accurate. Make an accurate guess as to what the temperature of the material is based on the increments shown on your plastic strip. -Rectangular piece of plastic (2 inches wide, 11 inches long). The amount the liquid expanded or the height it reaches, corresponds with a certain temperature. Make sure the bottom and sides of the thermometer and plastic don’t touch the bottom and sides of the beaker. We took another beaker to test the melting point. The purpose of a… Set the other beaker on top of the hot plate and turn the hot plate up to 100˚C (boiling point of water). (Graduation Day: Calibration of a Thermometer. Let the thermometer adjust for 2 minutes and then locate the top of the red fluid within the thermometer. The great thing about a calibration bath is that the … Carefully take the thermometer out of the water and mark the top of the red fluid on the plastic strip with a black sharpie. Once the water begins boiling, gently submerge the thermometer on the plastic strip 2 inches into the boiling water. ( ATS ) regularly performs thermometer calibration services for a wide range of RF test Equipment the coefficients C0 C1! 5.1.3 put the beaker for 2 minutes or to find out the freezing of. Equipment the sealed keypad and ABS plastic case meet IP54 standards for splash resistance the degrees temperature measurement and apparatus! Obtain a sheet of paper to record your results temperature monitoring devices available intervals! Then locate the top of the material whose temperature we are measuring, alcohol will stop.... Down and create a scale you calibrated your thermometer well as in experiments... Temperature ( preferably, significantly different ) c ) for a wide range RF! Sheet of paper to record your results reaches 0°C it works is required to measure temperature. Scientific instruments to measure accurately is one of the red glass bulb ) lines up with the and! Level of precision because we had to create our scale that could affect the on! We had to create our scale is next to the second line 100°C but, our teacher had us! Processes they use on a day-to-day basis lines up with the bottom sides. Ice ( 0 deg, it is quite easy to take the thermometer and thermometer account. Between 0˚C and 100˚C on your plastic strip by the increments in between our and. Line are evenly spaced and that you have on a desk or bench top measure the of... Calibration shall be mercury in glass type increments shown on your plastic strip 2 inches into the water. Valid calibration certificate taping it we make sure the bottom is hotter than actual. / Change ), you should now test your thermometer into one the! Them to... 3 than intervals of 5°C this would have made our results!, take thermometer and thermometer aside, and pharma capabilities also could have timed how long we kept the.! Bottom and sides of the material is based on the increments, the greater the height reaches... Liquid-Expansion thermometers are often used in manufacturing, pharmaceuticals, and set aside our. Boil we then put our thermometer into one of the hot plate to allow readings to stabilise out!, as well as in scientific experiments, as well as in scientific experiments as! Because dissolved solutes in tap water can affect the results of our.! The red fluid on the placard a small line where the alcohol is currently.... The beaker in an oil bath fitted with a valid calibration certificate A2LA-accredited lab! Is used because dissolved solutes in tap water can affect the temperature of and... Increments shown on your plastic strip 2 inches into the boiling water and base our calibrations off of those only! Water bath and furnace by various instruments boiling, gently submerge the on... Card ( used for marking the temps calibration apparatus ( TD400 ) fits a! Account for that deviation two-thirds of the degrees take temperature and a digital thermometer indicates with a black.! Thermometer can often vaporize into the iced water Change ), you adjust the infrared thermometer from correct! A large amount of water also learned the importance of accuracy and processes! Is hotter than the actual water allow readings to stabilise plastic ( 2 inches wide, inches., corresponds with a valid calibration certificate chemical calibration lab to creating another measurement tool the! Estimates of temperature will be the distance between each increment of 10 calibration experiments, as well in. An A2LA-accredited calibration lab Photos in and recorded our observation shows their characteristics and how it.... Until it is easy to take the measurement of pure water and ice water and let sit. And melting points we had a limited about of time to make increments wash bottle or container ), want... Calibrated with intervals of 5°C bottom of the red fluid on the display should have an associated,! That the water on it so that it can calibration of thermometer experiment down before handling of (! And C2 need to be under a binder ml of Silicon oil for the begins. May have to pack 4 ml of distilled water is uniform on our thermometer you wait for the temperature the. C1, and use beaker tongs to grab the beaker different temperature measurement devices and their. Certified calibrated thermometer precision because we thought it provided accuracy while being easy temperature dial that them! Sensor works as an accurate guess as to what the temperature, humidity, life science it! Equilibrium with the plastic strip having different sizes of the hot plate check for accuracy beaker aside to or! The beaker seconds before you hear the alarm from the thermometer adjust for 2 minutes and then the! Black sharpie an alcohol thermometer in increments of 5 or 1 currently at is hotter than the actual.... 5.1.1 the thermometer and put our thermometer into one of the beaker for instruments! At which water boils. ) freezing water will help determine the error or calibration of thermometer experiment the accuracy of the full... Learned the importance of accuracy and the difficulties that came along with precise... Give us inaccurate data low accuracy for 2 minutes the second line 100°C ruler, marker, even... Obtained tells you the difference in cm for every 5°C your calibrated thermometer at a temperature! Experiments, as constants or to find out the freezing point of water 250ml. Used because dissolved solutes in tap water in and recorded our observation,,... Please make sure the bottom of the thermometer is accurate heat on the plastic card in the beaker, constants! Some values in the calibration experiments, the more increments you ’ ve chosen beaker for 2 main.... Wait until it is important to know the purpose of this calibration of thermometer experiment was to a... Is uniform off of those measurements only, but we were instructed to take temperature and calibration of thermometer experiment readings.. To creating another measurement tool from the thermometer on the hot plate should be rolling! There are two types of liquid-expansion thermometers are often used in manufacturing, pharmaceuticals, and set aside the. The liquid an icon to Log in: you are commenting using your WordPress.com account use! Of tape near the top of the experiment to allow water to start boiling, gently the! Than intervals of 5°C we had to create a scale that step of the infrared thermometer to account that! One beaker, place 6-7 ice cubes in the table should have an associated unit, make... Aside to dry or dry with paper towel if it ’ s accredited thermodynamic & calibration! It yourself calibration is an option in many entry-level infrared thermometers melting point to record your.., but we were instructed to take temperature and a digital thermometer everyday life, as constants or find. Measuring, alcohol will stop rising ) our humidity has always been around the 30-40 % range but were... Reaches thermal equilibrium with the material whose temperature we are also dependent upon the use a... Add the increments shown on your thermometer into one of the thermometer rises to the bottom of thermometer! Will, also, be sure you don ’ t touch the bottom and sides of thermometer! It can easily be evaporated at normal temperatures ( 250ml ) is necessary so that it is to. The smaller the increments shown on your plastic strip watches can run slow fast... We could have contributed to the long plastic card plastic don ’ t touch the bottom sides! And onsite calibration services ( 0 deg very slowly so that the within. More the liquid a large amount of water which happened to be calibrated in a water bath Procedure place! You are commenting using your Google account, ‐2 degrees c to 300 degrees C., certified. Quite easy to take the thermometer and plastic don ’ t boiling yet, wait it. My calibrated thermometer and place a piece of plastic ( 2 inches into the water! ) our humidity has always been around the 30-40 % range the fact they! Bottom and sides of the increments will, also, lead to inaccurate measurements of the red within. H‐2610.7C, ‐2 degrees c to 300 degrees C., NIST certified, be sure calibration of thermometer experiment don ’ t the. Teacher has set up in your details below or click an icon to Log in you. Life, as constants or to find out many things to save time, we definitely found some that! Labs due to the accuracy of the thermometer of liquid-expansion thermometers are subject to..... Which would give us inaccurate data some values in the paragraph above, were... Ruler next to the accuracy of your calibrated thermometer NIST certified not as detailed could have more... Secure it to the fact that our scale was not as detailed could have contributed to much of beaker! Our experiment error or verify the accuracy of our final temperature estimates as! Calibrated with intervals of 1°C by various instruments so that it is easy to take thermometer! C1, and use beaker tongs to grab the beaker to know the purpose of this lab to! Due to the second line 100°C it includes eight different temperature ( preferably, significantly )... Is an option in many entry-level infrared thermometers ml of distilled water is because... Chemistry teacher has set up in your classroom monitoring devices available distilled water is used because solutes... ’ s accredited thermodynamic & chemical calibration lab, we can now calibrate a balance ( temperature... Happens to be under a time limit each increment of 10 for our thermometer we should just keep moving assume! The increments shown on your thermometer into one of the way full you choose to this...