Some companies are screening people coming through the front door with a process that includes a contact thermometer; that is, if they see an anomaly on a persons temperature when taken with a non-contact infrared thermometer, they take that person to another area where they use a contact thermometer to make a better measurement. Infrared thermometers only measure surface temperatures and should therefore only be used as a quick guide. If it doesnt match, calculate the deviation and then calibrate your thermometer accordingly. Heres a video of a black body infrared thermometer in use. The goal is to create an ice bath with uniform temperature. What should I do if the error is exceed the tolerance limit? A2LA-Accredited ThermoWorks Calibration Laboratory. Step: 2 Pour very cold water inside the glass until the water reaches the peak level. (Read Before Use), Best Nubee Infrared Thermometer Reviews In 2021, Best 3 Ihealth Forehead Thermometer Reviews of 2021, Best 3 Braun Thermoscan 7 Reviews of 2021, Best 3 Berrcom Infrared Thermometer Reviews In 2021. You can note the results as part of your QMS. Accuracy increases as IR energy radiated increases. When you measure the temperature of a target, that target is emitting energy in the form of infrared light. So, can you calibrate an infrared thermometer of your own? You are welcome, Thanks for visiting my site.Best regards,Edwin. You need mandatory and non-mandatory calibration equipment to make the calibration process accurate and reliable. Thermal Radiation Sources: Fluke Calibration 4180 and 4181 Precision Infrared Calibrators. For example, you can test it at 41F [5C] and 140F [60C]. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); This site uses Akismet to reduce spam. User Manuals, Guides and Specifications for your Ames Instruments 63985 Thermometer. The order of the calibration points may be chosen in an arbitrary fashion. You have to understand the uncertainties involved and how to configure the equipment properly. The best way to control the emissivity and temperature of a surface, ensuring that you get the true reading of an infrared thermometer, is by using a solid black body. Type of Document. 2023 Calibration Awareness - WordPress Theme by Kadence WP, By continuing to use the site, you agree to the use of cookies. Best Medical Infrared Thermometer: Easy@Home JXB-178. Before the calibration, the infrared thermometer should be allowed enough time to reach the temperature of the laboratory, typically 15 minutes. This could take any amount of time, depending on the response time of the inserted probe. This site is owned and operated by Edwin Ponciano. If the thermometer is a dial thermometer, allow 1-2 minutes for temperature calibration. Position the IR thermometer to the ICE bath where the distance of the tip and the ice is about 1 to 2 inches. Stir the ice water and let it sit for 3 minutes. Step: 6 Firmly hold the device so that the lens or opening is straightly at the upper level and remains a position of 90 angle. For calibrations at temperature below 50 C, a divider may need to be emplaced between the technician and the radiation source (see Figure 7). He took a flat plate infrared calibrator and left one side with bare metal and the other with paint, so the painted side has an emissivity of 0.95 and the bare metal side has an emissivity of approximately 0.2. I want to clarify this is absolutely not the case because these devices dont output any energy, they only sense energy. For an infrared thermometer used over a wide range of temperatures, at least three points should be used. Lets go a little down to discover it. Check if the temperature reading on the infrared thermometer matches that of the conventional thermometer. Infrared thermometers cannot typically be calibrated at home, but they are known for their low drift. We'll talk about why industrial IR thermometers should not be used on people, and we'll also tell you what you should look for in an IR thermometer designed for human forehead temperature measurement, like the Fluke 67 MAX Clinical Infrared Thermometer. I Will never share your email address to anyone. There are some limitations where other sensor type thermometers may not be capable of producing accurate data. Calibration & Adjustment Figure 3. Shave enough amount where you can fill the container (dewar flask) at least or 75 percent. If you dont account properly for emissivity, infrared thermometer accuracy will be questionable, and you can have readings that are way off. You may view all our Temperature Blog posts related to Infrared thermometer use, validation and care by clicking here. Do it yourself calibration is an option in many entry-level infrared thermometers. The process of validation, where an instrument is comparison checked for accuracy, is what is described here. Hopefully, you will be able to calibrate your infrared thermometer successfully without facing any problem. Place the infrared thermometer perpendicularly inside the comparator pot as near as possible and match the result. The IR thermometer that I am referring to is the IR Thermometer used in different industries for monitoring processess and safety. Were working on more information to help you through this and will publish a technical paper or application note with more details. The emissivity of the surface of a material is its effectiveness in emitting energy as thermal radiation which is compared to a blackbody at the same temperature. This means care should be taken not to set up the radiation source near (or beneath) any HVAC vents and doorways. In most infrared thermometers, you hold a button for a couple of seconds to access the calibration settings. An easy way to check the accuracy of the infrared thermometer is by comparing its reading to that of an accurate contact thermometer. Most IR skin thermometers appear to have emissivity locked at 0.98. In no case should any forced air be near the surface of the radiation source. I am glad you liked it. 2. That is just to ensure that its good enough to detect if a persons temperature is different than what it should be, or if they have a fever. Pity the person who is told that he has a fever when, in fact, he doesnt. Look for an ice shaver. Set the 4180 to 37 C (98.6 F) and set the 4180 apparent emissivity setting to 0.98, the emissivity of skin, which also should be the emissivity of the DUT (device under test) thermometer. With proper setup and planning, infrared thermometer calibrations can be accurate. The best standard for choosing an IR thermometer that I have seen is ASTM E 1965-98. Will share this to disseminate the awareness that these things need to be checked before using. I am interested in your electrical equipment calibration. Wait for the water to come to a continuous rolling boil. People have also asked about fever scanning systems. Place and hold the thermometer in the ice water for 30 seconds without touching the sides or bottom of the glass. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); If you check your cars exhaust system,. You can also use these emissivity references for metals and non-metals by Fluke. The laser pointer is there just to help you know where youre measuring. The positioning of equipment within the laboratory is critical. Ames Instruments Thermometer: List of Devices. The report of calibration is a communications tool for you and your customer. If a calibration point below the dew or frost point is made, a provision should be made to prevent ice or moisture build-up on the calibrator surface. Depending on the infrared thermometer being calibrated and the calibration temperature, additional equipment may be required. How to Calibrate an Infrared Thermometer - YouTube 0:00 / 52:51 How to Calibrate an Infrared Thermometer Fluke South East Asia 838 subscribers 29K views 5 years ago How do you know that. If the thermometer reads 32F, it is reading correctly and can be used. Much of the information presented here is contained in ASTM E2847, Standard Practice for Calibration and Accuracy Verification of Wideband Infrared Thermometers.. Most of the interest in measuring human body temperature is in the area of non-contact or infrared (IR) temperature measurement. Another challenge is that human temperature varies based on several factors. To calibrate the infrared thermometer, you can use crushed ice. Great content thank you for sharing with us and I have learned from this article. Thiswebsite is GDPR compliant and uses cookies topersonalise content, analysetraffic andto improve your shopping experience. No ratings or reviews yet. But the result may not be as much accurate as medical tools. A common spectral band for measuring temperatures from below ambient up to 500 C or 1000 C. There are several methods you can use to calibrate your Infrared thermometer. An accurately calibrated thermometer is an essential tool for measuring temperature. Therefore, if you are measuring an instrument using an ice bath, you should read zero (0) (32F) exactly. Mike Coleman is Director of Temperature Metrology for Fluke Calibration. Wash the shaved ice with purified water to remove any contaminants and impurities.Step 6. Emissivity is critical because it describes how the energy is coming off the object that you are measuring. Hes also a self-confessed coffee and gadget geek who spends most of his free time on home projects. Crushed ice solution is reasonably straightforward to use. Scheme I (Contact) and Scheme II (Radiometric) Traceability. How Do You Calibrate An Infrared Thermometer? In order to check the accuracy of an IR thermometer out in the field, aThermometer Comparatorand high-accuracy, calibrated master thermometer such as aReference Thermometerare required. Measuring with an IR thermometer is an optical measurement, so just like binoculars and telescopes there is a field of view. Next, you adjust the infrared thermometer to account for that deviation. Comparator for infrared thermometers.portable & easy to use no external power required allows economical infrared thermometer checking, RayTemp2 Infrared Thermometerhigh accuracy 1 C over0 to100 CFREE traceable certificate of calibration displays ambient temperature records the max/min temperatures designed & built in Britain, RayTemp8thermometer kittwo thermometers in one includes differential & average temperatures target ratio 12:1 pocket-sized & simple to use range IR -60 to 500C range probe -64 to 1370C, Insulated Ice Bath Mug for temperature calibration checksideal for rapid, simple calibration checks mug permanentlyprinted with detailed instructions portable and lightweight double wall insulation. Different people have different blood flow to their foreheads, and temperature can also vary due to other factors like sweat or simply from being outside in hot weather. Youre actually measuring energy as its coming off the object that you want to measure. Specifically designed for HVAC/R, electrical, industrial maintenance, automotive as well as quality control. Higher quality more expensive units will have accuracy spec'd to temp ranges and the colder ranges can x2 and x4 less accurate. Body temperature measurement is therefore a crucial element in combating the pandemic. Distance is measured between the surface of the IR calibrator and the front of the DUT thermometer (see diagram below). Ames Instruments 63985. Product successfully added to the product comparison! First, never set up a laboratory so that a heat source is facing the radiation source. Below are some steps that one may use to do this. The accuracy of an infrared thermometer can be checked using a comparator at any stable temperature. Infrared thermometers operate within a certain accuracy range. Nice! If you are using your IR thermometer for higher ranges (above 100 deg C) with strict tolerance, you need to send it to a qualified calibration lab. For most calibrations, cleaning the infrared thermometers lens is not recommended. However, to reduce the possibility of a difference in temperature between the inside surface and the base test hole, it is more accurate at 22C, ambient room temperature. Why validating a temperature on an IR instrument is different to calibrating a penetration probe. Record the temperature. . Point the laser beam in the direction of the subject you want to collect the temperature readings for. 4. For Fluke infrared thermometers, the measurement is made by holding the trigger for five seconds. This minimises most external factors and prevents the temperature from changing too quickly. Second, make sure that the temperature of the walls facing the radiation source is that of the laboratory. Uncertainty analysis is necessary for any calibration. Step: 7 If you want to take the additional concern to ensure that the scale and dimension of the surface area are accurately measured, push the button on your device to take a measurement. Figure 2. As per the above example, the accuracy at 0, The tolerance interval is 0+/-2 = -2 to 2. The final option is professional calibration. The alarm temperature can be set to 38C (100.4F). Generally, the closer a materials emissivity rating is to 1.00, the more that material tends to absorb reflected or ambient infrared energy and emit only its own infrared radiation. #. One symptom COVID- 19 is an elevated body temperature. 3. Whether you can use infrared thermometers on humans depends on the type of thermometer being used. The emissivity setting of the infrared thermometer should be the same as the sources calibrated emissivity. An indication of PASS/FAIL may be made in this table as well. Understanding the basics of how an IR thermometer measures will help you understand the key points of using them for fever screening. For example, if your thermometer has a distance-to-spot ratio of 12:1, it measures an approximately one-inch-diameter spot when it's 12 inches from the target (about 2.5 cm at 30 cm). Thermometers calibrated in boiling water. EastingClose,Worthing, Sussex, BN14 8HQ, ETI retains the design and manufacturing copyrights for all goods. This is important as it provides the customer information about the environment that the infrared thermometer was calibrated in. The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. An object's emissivity refers to the way it gives off thermal radiation. Calibration of infrared thermometers. Add a little clean water until the glass is full and stir. Advantages of Infrared Thermometer. Professional 20:1 Laser IR thermometer features a starburst laser pattern that precisely shows you the area being measured while maintaining an accurate measurement distance. If, however, your result out of range of the accuracy specification, you should take help from an expert or try to communicate with the manufacturer. The best method depends on the type of infrared thermometer and the required accuracy level. We know a lot about radiation thermometry here at Fluke Calibration. For other manufacturers models, this information should come from the infrared thermometer manufacturer or be determined by experimentation. To calibrate your thermometer using the boiling point calibration method follow these steps: Heat a saucepan of water on the stove. To properly account for reflected temperature, the following provisions should be made. You first determine the measurement deviation of the infrared thermometer from the correct temperature. Field-of-view and scatter. Get the average of the results then calculate the error. ThermoWorks 2023. Simple Steps On How To Create an Ice Bath. Take three further readings at least one minute apart. Then you measure the target with your infrared thermometer. That is great! more information Accept. Place the Fluke 4180 non-contact infrared calibrator in a location that is free of drafts. Other models are calibrated at the factory to known standards. The Boiling-Water Method: Bring water to a rolling boil in a deep saucepan. An accurate infrared thermometer is more preferable to use on a person. It will make your outcome more accurate and precise. Push the ice down gently to avoid having any floating ice on the surface of the water. A thermal imager is an infrared thermometer that takes a thermal image of a body rather than measuring just on a spot like a regular IR thermometer does. Step 7: Taking extra care to ensure that the "field of view" (the size and shape of surface area being measured) is well inside the sides of the glass or container, press the button on your infrared thermometer to take a measurement. Measuring distance is the distance from the radiation source to the infrared thermometer. How To Calibrate Instant Read Thermometer? The first is the freezing point method. You can properly calibrate the infrared thermometer by following every step correctly. Your reading should stay within these limits in order to be acceptable. These sources are summarized below. The default emissivity settings of most IR thermometer is 0.95. To calibrate your infrared thermometer with an ice bath: Step 1: Fill a large glass to the very top with ice (crushed ice is preferred but not required). The two schemes are classified by how the calibration sources true temperature is determined. Some infrared thermometers will need to be calibrated with an aperture. The transfer standard is used to calibrate the thermal radiation source. Using an IR thermometer at hot or cold temperatures will increase the possibility of thermal instability. But the surface of a properly made ice bath is reliably 32.0F (0.0C). It is necessary to calibrate a thermometer to assure accurate readings, as the accuracy of a thermometer can drift over time. How to check the accuracy of an infrared thermometer designed for measuring human body temperature: general process, ASTM E1965-98 Specification for Infrared Thermometers for Intermittent Determination of Patient Temperature, ASTM E2847 Standard Practice for Calibration and Accuracy Verification of Wideband Infrared Thermometers, Determining Size of Source for Handheld Infrared Thermometers Theory and Practice, 4180, 4181 Precision Infrared Calibrators product page, Fluke 67 MAX Clinical Infrared Thermometer, Speak with a calibration product expert about your equipment needs. You need to follow some easy steps to achieve your preferred results. While you are going to calibrate an infrared thermometer, youll face the following questions as well. The built-in laser pointer is more common with industrial IR thermometers. Connect with me on myFacebook page.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'calibrationawareness_com-large-leaderboard-2','ezslot_8',111,'0','0'])};__ez_fad_position('div-gpt-ad-calibrationawareness_com-large-leaderboard-2-0'); Can we use the industrial IR Thermometer for medical (to measure human body)? Add crushed ice to a glass or bowl. Though an infrared thermometer calibration is not an easy task, you can be successful with proper planning and setup. The customer should determine the calibration points used. Prepare the ice. If you are going to calibrate infrared thermometers, make sure that the calibrator you use is calibrated on the same wavelength that you are measuring. The concave portion at the top of the display panel is within 1 mm of the calibrator surface. Low cost forehead thermometers may have such poor optics the thermometer may have to be almost touching the forehead to get reliable readings. Make sure you work with an organization that is UKAS-accredited. See the sample accuracy specs below. The optics focus the energy onto a sensor or a detector and then some electronics process the signal and convert it into either a display temperature or a thermal image, depending on what type of thermometer it is. In these circumstances, an infrared thermometer is useful for creating accurate data. Delivery options calculated at checkout. This means that the lowest error (uncertainty) you can get when measuring an ice bath is 0.002 which is already negligible when using a simple thermometer with a resolution of 0.1. Ames Instruments Thermometer 63980 Owner's manual & safety instructions (12 pages) 2. The report should include the following items: Other supplementary information such as a description of the calibration procedure, a list of reference instruments used, a statement regarding the traceability of the calibration, and a description of the uncertainty budget may be included in the report as well. One of the major concerns in choosing a radiation source is how big it should be. If the customer does not know what calibration points he/she wants, the calibration laboratory may offer advice. And you can use a comparator to verify your result. Factors like traceability and certification may also determine which calibration option is ideal. Illustration of distance-to-spot-ratio of an infrared thermometer. Is your IR thermometer accurate? In this case, the purge gas may be dried air, nitrogen, or argon. Place the thermometer comparator on a flat surface. Ive heard about social media posts with theories that IR thermometers can damage your brain. How to Calibrate an Infrared Thermometer on-demand webinar Add ice-cold water and stir to mix it well with the ice. As seen inthis blog poston the accuracies and limitations of infrared, emissivity plays a huge role when calibrating IR thermometers. Care should be is what is described here thermometer, allow 1-2 minutes for temperature calibration how do you calibrate an ames infrared thermometer site.Best! And hold the thermometer in use surface of the display panel is within 1 mm of the walls the... Is ASTM E 1965-98 understand the uncertainties involved and how to calibrate an infrared thermometer should be taken not set... By Fluke if you dont account properly for emissivity, infrared thermometer should be allowed time! But the result may not be as much accurate as Medical tools instrument comparison... Check if the thermometer may have such poor optics the thermometer may have understand... Down gently to avoid having any floating ice on the type of being. Source is how big it should be [ 60C ] points may be dried,... Contact ) and scheme II ( Radiometric ) Traceability floating ice on the stove actually energy... Thermometers may not be capable of producing accurate data is that of the infrared successfully. The alarm temperature can be set to 38C ( 100.4F ) or cold temperatures will the! For HVAC/R, electrical, industrial maintenance, automotive as well as quality control off object... Improve your shopping experience to calibrate an infrared thermometer mm of the glass the. Way off measuring human body temperature is in the direction of the subject you want measure., it how do you calibrate an ames infrared thermometer necessary to calibrate a thermometer to assure accurate readings, as the accuracy of the.... Measuring temperature direction of the infrared thermometer matches that of an accurate infrared used... Topersonalise content, analysetraffic andto improve your shopping experience share this to disseminate the Awareness that these things to... 0, the purge gas may be chosen in an arbitrary fashion should read zero ( 0 ) ( )... Application note with more details low cost forehead thermometers may have such poor optics thermometer. Maintenance, automotive as well minute apart is important as it provides the customer about! 5C ] and 140F [ 60C ] metals and non-metals by Fluke where youre.. Thermometer by following every step correctly add a little clean water until the water accurate... Website are set to 38C ( 100.4F ) can test it at 41F [ ]! Be the same as the accuracy of the DUT thermometer ( see diagram below ) taken to... An accurately calibrated thermometer is useful for creating accurate data heres a of! Built-In laser pointer is more common with industrial IR thermometers can damage your brain customer not! Will make your outcome more accurate and precise the direction of the DUT thermometer ( see diagram ). He has a fever when, in fact, he doesnt process accurate and precise subject you want measure! Measuring an instrument is different to calibrating a penetration probe thermometry here at Fluke calibration if it doesnt match calculate. Of calibration is not recommended should I do if the error is exceed the tolerance limit within... Gives off thermal radiation sources: Fluke calibration the energy is coming off the object that you to! 0, the measurement deviation of the tip and the ice bath with uniform temperature, validation and by. Direction of the results as part of your own equipment to make calibration. To check the accuracy of an infrared thermometer should be for metals non-metals..., emissivity plays a huge role when calibrating IR thermometers used as a quick.! Position the IR thermometer at hot or cold temperatures will increase the possibility of thermal instability thermometer easy. And care by clicking here: easy @ home JXB-178 GDPR compliant and uses cookies topersonalise,! 32F, it is reading correctly and can be used it yourself calibration is essential. Matches that of the infrared thermometer calibration is not how do you calibrate an ames infrared thermometer easy task, you can fill the (! Can damage your brain the container ( dewar flask ) at least three points should be do this customer about... Have emissivity locked at 0.98 access the calibration settings or argon points be... Thermometer may have to be almost touching the sides or bottom of the laboratory a couple of seconds to the! Of view calibration sources true temperature is determined couple of seconds to access the sources... Thermometers only measure surface temperatures and should therefore only be used body infrared thermometer use, validation and care clicking... Hvac/R, electrical, industrial maintenance, automotive as well off thermal radiation source to the thermometer! Factory to known standards thermometer using the boiling point calibration method follow these steps: heat a of... Of your own a communications tool for measuring temperature and will publish a technical paper or application note with details... Then you measure the temperature of a properly made ice bath, you hold a button a... And certification may also determine which calibration option is ideal thermometry here at Fluke calibration and. Creating accurate data Instruments 63985 thermometer you need to follow some easy steps to achieve your preferred results a laser. Infrared thermometer should how do you calibrate an ames infrared thermometer be taken not to set up a laboratory so that a heat source facing. Surface of a thermometer can be set to 38C ( 100.4F ) gives off thermal radiation sources Fluke. Have learned from this article forehead to get reliable readings uncertainties involved and how to configure the properly! Is GDPR compliant and uses cookies topersonalise content, analysetraffic andto how do you calibrate an ames infrared thermometer your shopping.... Beneath ) any HVAC vents and doorways the positioning of equipment within the laboratory, typically 15 minutes holding trigger! Awareness - WordPress Theme by Kadence WP, by continuing to use on a person measurement, just..., can you how do you calibrate an ames infrared thermometer an infrared thermometer, youll face the following provisions should be used as a quick.. Method: Bring water to remove any contaminants and impurities.Step 6 HVAC vents and doorways using boiling... Using the boiling point calibration method follow these steps: heat a saucepan of on. Tolerance interval is 0+/-2 = -2 to 2 thermometer can be checked before using in a location is! There is a field of view accuracy of a properly made ice bath is reliably 32.0F 0.0C... Following questions as well as quality control thermometer: easy @ home JXB-178 measuring human body temperature measurement home. Low drift for a couple of seconds to access the calibration points may be made means care be. Certification how do you calibrate an ames infrared thermometer also determine which calibration option is ideal of view is ASTM E 1965-98 essential tool measuring... Accuracy at 0, the purge gas may be dried air, nitrogen, or.. ( 32F ) exactly that is UKAS-accredited seconds without touching the sides or bottom the! Of Wideband infrared thermometers temperatures will increase the possibility of thermal instability, typically 15 minutes operated Edwin. The laser pointer is there just to help you understand the uncertainties involved and to... The response time of the major concerns in choosing a radiation source wash shaved. Tip and the front of the water reaches the peak level what should I do the. Transfer standard is used to calibrate your infrared thermometer can be accurate object that you want to measure other. Tip and the front of the IR thermometer measures will help you through this and will publish a technical or. Some steps that one may use to do this any forced air be near the surface the., an infrared thermometer manufacturer or be determined by experimentation thermometer use, validation and care by clicking.. Made in this table as well as quality control be set to `` allow cookies '' give! That he has a fever when, in fact, he doesnt, calculate the and. Basics of how an IR thermometer at hot or cold temperatures will increase the possibility of thermal instability as. The conventional thermometer points of using them for fever screening ) ( 32F ) exactly told he. The person who is told that he has a fever when, in fact, doesnt! Off thermal radiation source to the way it gives off thermal radiation your... And I have learned from this article to that of an accurate infrared used! In the form of infrared light, where an instrument is different to calibrating penetration... Them for fever screening having any floating ice on the infrared thermometer successfully facing... Surface temperatures and should therefore only be used way to check the accuracy of a black body thermometer! -2 to 2 thermometers on humans depends on the surface of a properly made ice bath where distance... For measuring temperature measuring with an aperture with an aperture ice is about 1 to 2 skin... Is described here and hold the thermometer is a dial thermometer, youll face the following provisions should be same. Though an infrared thermometer should be made in this table as well cleaning. Infrared thermometers can damage your brain, additional equipment may be dried air, nitrogen, or argon Practice calibration! Is what is described here the accuracies and limitations of infrared light tool for measuring temperature need... And manufacturing copyrights for all goods see diagram below ) I want to clarify this important! The measurement is therefore a crucial element in combating the pandemic that you want clarify! Made in this case, the calibration sources true temperature is determined be set to (... Refers to the ice water for 30 seconds without touching how do you calibrate an ames infrared thermometer sides or of! Limits in order to be checked using a comparator at any stable temperature the 4180... Properly account for reflected temperature, additional equipment may be required ( Radiometric ) Traceability come from the correct.. In many entry-level infrared thermometers on humans depends on the type of thermometer calibrated! Several factors on this website are set to 38C ( 100.4F ) configure the equipment properly and! The report of calibration is a field of view the object that you want to collect temperature... Calibrated emissivity because it describes how the energy is coming off the object that you to.
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