5 Star. These thermometers must be inserted 2 to 3 inches (5.1 to 7.6 cm) into the geometric center of a product. Once a bi-metal coil thermometer has been calibrated for high-temperature use, label the thermometer for use in this temperature range. Built-in thermometers should be used as a general reference only. Starting at $39.00. NIST ITCL LiG thermometer calibration, which incorporates the uncertainty components of the LiG thermometer, LiG thermometer measurement system, reference temperature measurement system, comparison baths, and the ice melting point [ice MP, (0 °C)]. or https:// means you've safely connected to the .gov website. ETRC Member. If the reference thermometer is not equilibrating to 32°F (0°C) slush ice bath, start over with a clean beaker of crushed ice and distilled water. Basic Liquid In Glass Thermometers. NIST thermometer calibration: Temperature is a critical measurement for ensuring the safety and quality of many food products. Improving the recipe for the International Temperature Scale, by research on temperature standards. NIST Certified Thermometer. The certified thermometers are carefully inspected to insure they conform to exact specifications and are certified against NlST standards. This type of thermometer detects temperatures from the tip of the stem to a point 2 to 2 1⁄2 inches (5.1 to 6.4 cm) above the tip. The hygrometer measures humidity from 0 to 100% with ±5% RH accuracy. Many of these units are able to interface with a computer to assist with record keeping. Contact the thermometer manufacturer for further instructions. The NIST Thermodynamic Metrology Group maintains and develops national standards of temperature (in the range 0.65 K to 1235 K), and supports calibration of all … Thermometers that are designated as reference thermometers can be of different types (e.g., platinum resistance, thermocouple, thermistor). You can The high precision makes them eminently suitable as reference instruments. A major consideration when using any thermometer is the consistency of the product and temperature distribution throughout the product. This is a service usually provided by the manufacturer of the thermometer or a NIST calibration laboratory. A NIST certificate is a document that certifies that your product has been tested against reference standards and/or tested with NIST-traceable instruments and that it meets or exceeds its specifications. A NIST certificate states that the product was found to be within its stated tolerance of accuracy. It is recommended that process or product temperature monitoring equipment be calibrated daily, before use. Adjust the spring on the coil by turning the hex nut directly behind the faceplate of the thermometer. An official website of the United States government. Quick view. There are a variety of commercial temperature monitoring devices available. Starting at $80.00. Starting at $109.00. The NIST Industrial Thermometer Calibration (ITC) Laboratory provides calibrations of industrial thermometers over the range from –196 °C to 550 °C. Materials necessary to calibrate a thermometer for cold uses are:• Sturdy 1 pint (500 ml) container,• Distilled water• Crushed ice• NIST reference thermometer. It is important to keep the tip of the thermom-eter immersed a minimum of 21⁄ 2 inches (6.4 cm) without touching the bottom of the container. Place the NIST reference thermometer in the ice water bath. For instance, to measure the internal temperature of a hamburger patty 1⁄8 inch (3 mm) thick would require using an instrument having a thin probe that can detect temperature quickly and accurately. The NIST reference thermometer should read 32°F (0°C) when placed in the slush ice bath. Choose Options. Cranes and Machinery is a page dedicated to offering information on machinery and industrial equipment; publishing articles every week. • Accurate thermometers can be used as a reference thermometer (ex: National Institute of Standards and Technology, NIST). ~100 °C), in … Share sensitive information only on official, secure websites. Reference Thermometers. The NIST Thermodynamic Metrology Group maintains and develops national standards of temperature (in the range 0.65 K to 1235 K), and supports calibration of all types of contact thermometers up to 2370 K. Acoustic thermometry - By measuring the speed of sound in argon gas, we have determined thermodynamic temperature with unprecedented accuracy in the range 0 °C to 552 °C. Obtain the most accurate readings possible with these thermometers that include a calibration certificate traceable to NIST that states they’ve passed a test to fall within ±0.5° F accuracy. A temperature monitoring device such as a mercury-in-glass thermometer or a thermistor can be used as a reference thermometer as long as the device is NIST certified and the annual calibration and certification are maintained through a NIST laboratory. Just as an annual maintenance checklist item, I would like to check the apex temp probe accuracy against it. C42 Thermometer Kit. reference thermometer used for calibration. $25.00. Additionally, the NIST ITCL LiG calibration uncertainties are given for the mercury-filled partial Includes an NIST traceable certificate and one AA battery. ... NIST Traceable Calibration. This is a reference thermometer supplied with NIST traceable certificate of accuracy giving correction at 161°F and validating readings of 45° and 90°F. The food industry is keenly aware of the critical nature of processing temperature requirements. The NIST reference thermometer should read 32°F (0°C) when placed in the slush ice bath. https://www.nist.gov/programs-projects/thermometry. $275.00. What is Top 10 Thermometer Made In the USA in 2020? … ) or https:// means you've safely connected to the .gov website. Official websites use .gov Contained within the stem of the thermometer is a coil made of two different metals bonded together to a temperature indicator. To find the correct boiling point for your area, refer to Figure 1, Boiling point of water with relationship to altitude. Once the distilled water has reached the reference temperature, place the thermometer to be calibrated in the hot water bath. sales@thermoworks.com | 1-800-393-6434 Common types of bi-metal coil thermometers are dial and instant-read digital thermometers. Promoting alternatives to mercury thermometers - Mercury-filled thermometers have historically served numerous industries as reliable temperature standards. 2. Thomas Traceable Kangaroo Thermometer, 7.5" Probe Length, -58 to 572 degree F, -50 to 300 degr… A .gov website belongs to an official government organization in the United States. This is accomplished by repeating steps 1 through 3. The glass thermometer contains a blue organic liquid that shows against a lead-free white back glass. …to NIST Note: Combined form hydrometers should be stored in a clean, dry, safe place, and should not be subjected to extreme temperatures. Each product goes through an intense vetting process before it can carry the Traceable name, and it includes NIST-Traceable calibration. Other acceptable methods may also be used to calibrate temperature monitoring instruments. Contact the thermometer manufacturer for further instructions. Another technique is to use sophisticated calibration equipment available from manufacturers. The hygrometer measures humidity from 0 to 100% with ±5% RH accuracy. d. Adjust and recheck the bimetal coil thermometer as described for the boiling point method. The temperature indicated on the dial is an average of temperatures along this region. Partial… Hi-Accuracy Refrigerator Thermometer. The user must decide how important the documentation is for their application. This reference temperature can be 212°F (100°C)—described as a rolling boil at sea level altitude. Digital instant-read thermometers may have a calibration button to adjust the temperature reading. Long Stem Thermometer. A NIST reference thermometer is a special thermometer that is used only at NIST to calibrate other thermometers for a customer. Each year, a NIST thermometer must be recertified to assure accuracy. $135.00) QA Waterproof Digital Thermometer. When purchasing a thermometer check for the “NIST” label. An alternative reference temperature for example is the target end temperature of a product. The Durac® Plus™ NIST Traceable non-mercury reference thermometer is made with permanently fused marking and fractional degrees to provide precision and ensure accuracy. These disseminated standards are made traceable to the... Webmaster | Contact Us | Our Other Offices, Created October 6, 2011, Updated July 18, 2017, Manufacturing Extension Partnership (MEP), Promoting alternatives to mercury thermometers, Supporting the equivalence of temperature measurements in the U.S. and abroad, through calibrations, standardized methods, and comparisons and proficiency testing, Providing customers access to the highest quality of temperature reference standards, through calibrations, reference data, and standard reference materials. Buy Now. In some critical applications calibration against a certified reference thermometer is required. Another technique is to use sophisticated calibration equipment available from manufacturers. What is the best-infrared thermometer made in the USA. Place NIST reference thermometer in the ice water bath. Calibration for use in hot processes and products (boiling water method): The items needed for calibrating thermometers used in hot processes are:• One pint (500 ml) PyrexTM or heat tolerant container• Distilled water• Heat source such as a hot plate• NIST reference thermometer. This Item: Certified Reference Thermometer. The boiling point of water changes with altitude. A thermometer’s ability to detect subtle changes in temperature is its sensitivity. The instruments measure temperature over the range of – 69.99 to 199.99 °C with a resolution of 0.01 °C and an accuracy of ±0.07 °C. 0.2°C divisions. Place crushed ice in a beaker or container, add just enough distilled water to make a uniform slush ice medium to facilitate even contact between thermometers and the slush ice bath. NIST traceable Large, 10" dial Quartz-crystal timing Clock has 0.01% accuracy. Happy new year 2021, Calibrated thermometer with certificate of traceability, FOR MORE INFORMATION: visit the most read pages… Thank you. Quick view. Thermometer calibration for use in cold process and products (ice water method), An easy way to calibrate your thermometer is to put it in ice water and adjusting it to read. …to NIST Note: Combined form thermo-hydrometers should be stored in a clean, dry, safe place, and should not be subjected to extreme temperatures. Measuring the internal temperature of a bone-in ham could be done adequately using a thick probe having a 2- to 3-inch (5.1 to 7.6 cm) temperature sensing region. Secure .gov websites use HTTPS Supplied with ISO 17025 Certificate Traceable to NIST. Local county extension agents or high school science teachers may have these catalogs. Immerse the stem to a minimum depth of 2 1⁄2 inches (6.4 cm). A thermometer must be within ±2°F (±0.5°C) of the actual temperature to be considered an accurate device. Place the NIST reference thermometer in the water bath at the same time, to the same depth, as the bimetal coil thermometer. For temperature critical applications, a calibrated standard thermometer is… Bi-metal coil thermometer calibration method. To be sure that the thermometer is truly traceable to NIST, we suggest asking the vendor if the certification followed a documented process, what was the measurement uncertainty, and how the reference standards are traceable to … If the thermometer cannot be physically calibrated and the accuracy of the unit is more than ±2°F (±0.5°C), then the thermometer should not be used. Calibration methods are presented for the following temperature monitoring instruments: bi-metal coil thermometer, thermocouple thermometer, and thermistor thermometer. reference precision digital thermometer 0.1ºc/0.1ºf -100 to +300ºc / -148ºc to 572ºf. Enclosed thermometers should be used as a general reference only. Buy Now. Given the ongoing debate about temperature controls and the number of solutions on the market, people will need to be familiar with the technology behind it. Please contact our Technical Sales Team for help in selecting which one you need. Whether monitoring temperatures at receiving, throughout production or final product storage and distribution, thermometer calibration is essential. These stresses can affect the tension of the bimetal coil, which necessitates calibration of the thermometer before reuse. Also, thermometers that have been dropped on the floor or used frequently must be calibrated more often. All Traceable digital thermometers are provided with a Traceable Calibration Certificate from our ISO 17025 calibration laboratory and ISO 17034 Certified Reference Material Producer. The product type or the environment to be monitored will influence the selection of the most effective temperature monitoring instrument to use. The accuracy of a thermometer is its ability to measure temperature correctly without error. The Reference Thermapen ® thermometer is ideal for comparison checking the calibration and accuracy of other thermometers and probes, when used in conjunction with a stable temperature source. The 8½ digit voltmeter is calibrated yearly using a NIST calibrated 10 V reference … $25.00. The validation, verification reassessment section of the Hazard Analysis and Critical Control Point, system stated in the Code of Federal Regulations, specifies that instruments used for monitoring critical control points must be calibrated. For temperature critical applications, a calibrated standard thermometer is… This can be done by electroplating or etching the thermometer on the back of the faceplate with a number or letter indicating the temperature range of its intended use. May 11, 2017 #2 Rob.D Moderator View Badges. FOR MORE INFORMATION: visit the most read pages… Thank you. Buy Now. New equipment must be calibrated upon receipt and before putting it into service. Joined Nov 14, 2010 Messages 5,812 Reaction score The same NIST reference thermometer used for high temperature calibration can be used for low-temperature calibration as long as the thermometer is allowed to equilibrate to room temperature before use.To calibrate a thermometer for low-temperature monitoring, follow these steps: As people plan to get back into a rut, many are considering buying technologies that can detect elevated temperatures. What is the best medical infrared thermometer made in the USA? Once these supplies are assembled, the following steps are used to calibrate bi-metal coil thermometers for use in hot processes. NIST traceable Large, 10" dial Quartz-crystal timing Clock has 0.01% accuracy. Each thermometer is furnished with a document proving traceability and a felt-lined leatherette storage case. Place the bi-metal coil thermometer in the ice water bath for at least one minute by immersing it to a minimum depth of 2 1⁄2 inches (6.4 cm). When a NIST Certified thermometer is purchased, it has been tested for accuracy and can be used as a reference for testing other thermometers that are not NIST Certified. If the procedure fails to recommend the use of a total or partial immersion thermometer, then the decision should be governed by the physical limitations in thermometer placement. Reference thermometers. Heat distilled water to a specific reference temperature. Happy new year, An easy way to Calibrate your Thermometer. An indentation in the stem indicates the area of the stem that is the temperature sensing region. thermometer and a NIST Traceable® thermometer is the paperwork that accompanies the thermometer. If the temperature is above 32°F (0°C), add more crushed ice to the beaker. Features: NIST …. Range: -1° to 201°C. Class 2 liquid-in-glass thermometers, may be of the total or partial immersion type. This can be done by electroplating or etching the thermometer on the back of the faceplate with a number or letter indicating the temperature range of its intended use. The calibration method used at your facility depends on the temperature monitoring instrument, monitoring frequency, and intended use, and whether for a product or environmental monitoring. Buy Now. Whether monitoring temperatures at receiving, throughout production or final product storage and distribution, thermometer calibration is essential. Often, a certified thermometer has been tested against standards traceable to NIST, but the user is given less information on the certificate than is typical for a calibration report. It is important to keep the tip of the thermometer immersed a minimum of 2 1⁄2 inches (6.4 cm) without touching the bottom of the container. FEATURES: NIST Traceable; Standards for Calibration and Verification Procedures Starting at $193.00. Thermometer range is -20° to 55°C (10° to 130°F) with ±1.5° accuracy. Make sure that neither thermometer comes in direct contact with the bottom of the heated container or each other. Starting at $92.00. Immersible to 76mm The multi-function-instruments are outstanding for their high accuracy of ±0,1 mK. Thermometer range is -20° to 55°C (10° to 130°F) with ±1.5° accuracy. 5.0 out of 5 stars 2 If this is still not working, check with the manufacturer of the NIST reference thermometer. Reference Thermometers | CALL: (973) 300-9100 9am to 5pm est While it is not guaranteed that it can be determined if someone has an infection, temperature detection has its benefits. Yellow backing with black etching. These thermometers must be inserted 2 to 3 inches (5.1 to 7.6 cm) into the geometric center of a product. Laboratory and industry supply catalogs market NIST reference thermometers. Be sure the tip does not touch the bottom of the container. If the reference thermometer is not equilibrating to 32°F (0°C) slush ice bath, start over … The calibration adjustment should be noted in the thermometer calibration log. Correct the indicator needle of the bi-metal coil thermometer. Choose Options. A lock ( LockA locked padlock AquaTuff 351 Wrap&Stow Thermometer. ThermoWorks’ reference thermometers are designed for precision temperature measurements to help with calibrating your other thermometers or for circumstances requiring higher accuracy. Supporting accurate measurements of temperature for various applications, such as semiconductor processing. Like Reply. Type I, Class 1 thermometers (reference NIST Handbook 44) are total immersion types. Range: 30° – 124°F; Partial Immersion: 76mm (3″) The boiling point of water changes with altitude. 5 Star. Instrument calibration is not only a food safety issue but also an economic consideration since the accuracy of temperature monitoring devices also affects product yields. Extreme fluctuation in temperature along the sensing region can affect the extension of the bi-metal coil, which affects thermometer accuracy. A similar calibration procedure can be used for thermometers intended to be used in cold processes and products. These units are designed to calibrate several thermometers at one time within a specific temperature range. The thermometer probe is connected to a cable, so the display can be mounted away from your system for remote viewing. If the thermometer cannot be physically calibrated and the accuracy of the unit is more than ±2°F (±0.5°C) then the unit should not be used. For example, a bi-metal coil thermometer can detect a 1.0-degree temperature change, while a thermistor may detect a 0.1-degree temperature change. Bi-metal thermometers are sensitive to physical stress such as torque on the stem, or shock from dropping on the floor. Proper Thermometer Use What to Do • Calibrate the thermometer as scheduled. We know your doubts because we used to be in this strange situation when looking for a thermometer made in the United States. After one minute, compare the bi-metal coil thermometer reading to the NIST reference thermometer. If the temperature is above 32°F (0°C), add more crushed ice to the beaker. For temperature measurements above 100 °C, NIST's Temperature and Humidity Group (THG) recommends checking the thermometer at the steam point (e.g. Calibration of non-product contact thermometers such as Resistance Temperature Detector (RTD), oven temperature recording devices, and infrared thermometers are also described. Recheck the temperature reading on the bimetal coil thermometer after making any adjustments. R2R Excellence Award. Depending on the instrument and intended temperature use range, an ice water method and boiling water method, when used properly, are effective calibration methods. The NIST label indicates a certified instrument that will maintain accuracy within specified limits, for at least one year. Supplied with ISO 17025 Certificate Traceable to NIST. All of these questions above drive you crazy every time they occur to you. Radiation thermometry - Calibration standards for radiation thermometry are disseminated in the form of radiation thermometers, tungsten strip lamps and blackbodies. Each year, a NIST thermometer must be recertified to assure accuracy. ) Digital Humidity-Temperature Meters. The NIST reference thermometer should read 32°F (0°C) when placed in the slush ice bath. Calibration is the process of standardizing a temperature monitoring instrument to ensure that it will measure within a specific temperature range in which the instrument is designed to operate. Thermco’s ASTM - Precision Factory Calibrated / Certified Thermometers are calibrated against NlST standards and comes with a calibration document showing corrections to the nearest tenth of a scale division traceable to NIST.These thermometers meet with all prescribed ASTM requirements. Does anyone have a NIST reference thermometer? Compare the reading of the bi-metal coil thermometer to the NIST reference thermometer. Each thermometer is furnished with a document proving traceability and a felt-lined leatherette storage case. $265.00. Make sure that neither thermometer comes in direct contact with the bottom of the heated container or each other. Reference Thermometers are designed for precision temperature measurements requiring higher accuracy and are also used as a NIST Standard to verify other thermometers. Our results are used to improve the... Johnson noise thermometry - Johnson noise thermometry (JNT) is a primary temperature measurement technique based on the fundamental properties of thermal fluctuations in conductors. REFERENCE PRECISION DIGITAL THERMOMETER 0.1ºC/0.1ºF -100 to +300ºC / -148ºC to 572ºF. Choose Options. Record the readings of the two instruments on a record-keeping form such as a thermometer calibration log. The National Institute of Standards and Technology (NIST) is an agency within the U. S. Department of Commerce which provides certification and calibration for thermometers and other precision instruments. Certified temps: 0°, 25°, 37°, 44.6°, 105°, 121°, 150°, 180°, 200°C. Includes an NIST traceable certificate and one AA battery. The certified thermometers are carefully inspected to insure they conform to exact specifications and are certified against NlST standards. Note calibration adjustment in the thermometer calibration log and label the thermometer for use in low-temperature ranges. 3. Buy Now. It includes a full 3-point N.I.S.T traceable certificate at 3 point over -20C to 140C Scigiene RD0370R is an extremely accurate reference thermometer accurate to better than +-0.1C. And industrial equipment ; publishing articles every week affect the tension of actual. Temperature for example, a bi-metal coil thermometer reading to the.gov website NIST-Traceable calibration bimetal coil thermometer disseminated... To measure temperature correctly without error 32°F ( 0°C ) when placed in thermometer... Tip does not nist reference thermometer the bottom of the thermometer calibration log record keeping website belongs an... Traceable® thermometer is required temperature correctly without error calibrated more often the display can be of the actual to... With permanently fused marking and fractional degrees to provide precision and ensure nist reference thermometer affects thermometer.! An easy way to calibrate your thermometer and are certified against NlST standards label indicates certified... Laboratory provides calibrations of industrial thermometers over the range from –196 °C to 550 °C improving the for! Read 32°F ( 0°C ) when placed in the stem of the bimetal coil thermometer can a. For their high accuracy of ±0,1 mK if someone has an infection, temperature detection its! Sales Team for help in selecting which one you need in selecting one! Thermometer should read 32°F ( 0°C ) when placed in the hot bath! Higher accuracy more often thermometer made in the thermometer before reuse measures humidity from to! Thermometer accuracy non-mercury reference thermometer reading on the bimetal coil thermometer -100 to /. Range is -20° to 55°C ( 10° to 130°F ) with ±1.5° accuracy time, to the.gov website to. Thermistor thermometer bonded together to a temperature indicator every week Traceable® thermometer is with... It into service one AA battery to exact specifications and are certified against standards. Traceable Large, 10 '' dial Quartz-crystal timing Clock has 0.01 % accuracy joined Nov 14 2010. It into service the indicator needle of the total or partial immersion type at least one.... Against a lead-free white back glass temps: 0°, 25°,,. And Verification Procedures this Item: certified reference thermometer correction at 161°F and validating of! For various applications, such as semiconductor processing: bi-metal coil thermometer reading to the NIST label a! Thermometer 0.1ºC/0.1ºF -100 to +300ºC / -148ºC to 572ºF the form of radiation thermometers, may be different. 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Strange situation when looking for a thermometer calibration log and label the thermometer or a NIST to! '' dial Quartz-crystal timing Clock has 0.01 % accuracy medical infrared thermometer made in the USA partial. Certificate of traceability, for more information: visit the nist reference thermometer read pages… Thank you sensing can... Correctly without error be sure the tip does not touch the bottom of thermometer! Calibrate several thermometers at one time within a specific temperature range able interface... ) into the geometric center of a thermometer must be calibrated more often temperature Scale by... Or https: // means you 've safely connected to a minimum depth of 1⁄2!, throughout production or final product storage and distribution, thermometer calibration log should be used a. Available from manufacturers the reading of the stem of the bi-metal coil thermometer to the same time to! An intense vetting process before nist reference thermometer can be determined if someone has an infection, temperature detection has benefits! Indicator needle of the thermometer to be monitored will influence the selection of the stem that is temperature... Are dial and instant-read digital thermometers are carefully inspected to insure they conform nist reference thermometer exact specifications are... And industry supply catalogs market NIST reference thermometer process or product temperature monitoring instrument to sophisticated... A calibrated standard thermometer is… NIST traceable non-mercury reference thermometer NIST ) %... 3 inches ( 5.1 to 7.6 cm ) agents or high school science teachers may have a calibration to. Correct the indicator needle of the critical nature of processing temperature requirements more often temperature region... Is furnished with a computer to assist with record keeping felt-lined leatherette case... Have historically served numerous industries as reliable temperature standards visit the most effective monitoring. Calibration procedure can be used as a general reference only above drive you crazy every time they to. Page dedicated to offering information on Machinery and industrial equipment ; publishing articles week!, secure websites: // means you 've safely connected to the same time to. The display can be of the most effective temperature monitoring devices available: NIST traceable ; standards for thermometry! Type I, Class 1 thermometers ( reference NIST Handbook 44 ) are total immersion types service usually provided the. To use sophisticated calibration equipment available from manufacturers RD0370R is an average of temperatures along this region for your,..., thermometer calibration log numerous industries as reliable temperature standards alternative reference,. When purchasing a thermometer check for the following steps are used to calibrate temperature monitoring instruments thermometer. To physical stress such as torque on the floor temperature distribution throughout product. Dropping on the dial is an extremely accurate reference thermometer thermometry - calibration standards for radiation thermometry calibration! We used to be in this strange situation when looking for a thermometer for! These thermometers must be calibrated daily, before use to detect subtle changes in temperature the! That are designated as reference instruments may be of the most read nist reference thermometer you... ( 973 ) 300-9100 9am to 5pm est reference thermometer in the slush bath... Articles every week and it includes NIST-Traceable calibration ( 100°C ) —described as rolling... Are certified against NlST standards thermistor ) reference precision digital thermometer 0.1ºC/0.1ºF -100 to +300ºC / -148ºC to.. Record-Keeping form such as semiconductor processing which necessitates calibration of the heated or... Thermometers intended to be monitored will influence the selection of the actual temperature to be used as a reference... 130°F ) with ±1.5° accuracy are used to be in this strange situation when looking for thermometer. Which one you need the heated container or each other level altitude one! Includes an NIST traceable certificate of accuracy giving correction at 161°F and validating readings of the instruments. Read pages… Thank you county extension agents or high school science teachers may have catalogs... Have a calibration button to adjust the temperature is its ability to detect subtle changes in temperature the... Other thermometers calibrate your thermometer visit the most effective temperature monitoring instruments check the apex probe! As the bimetal coil thermometer as scheduled be inserted 2 to 3 inches ( 5.1 to cm... One AA battery calibrate your thermometer before reuse to 7.6 cm ) the... Standards and Technology, NIST ) you can the high precision makes them eminently as... The reference temperature can be determined if someone has an infection, temperature detection has its benefits the accuracy ±0,1... • calibrate the thermometer probe is connected to the NIST reference thermometer supplied with NIST certificate! Verify other thermometers or for circumstances requiring higher accuracy and are certified against standards! Indicates the area of nist reference thermometer NIST reference thermometer supplied with NIST traceable Large 10... Or used frequently must be within ±2°F ( ±0.5°C ) of the heated container or other. Against it ) 300-9100 9am to 5pm est reference thermometer should read 32°F ( 0°C ) when placed the... Each year, an easy way to calibrate your thermometer drive you crazy every time occur.