National Physical Laboratory Video Presentations on Temperature Measurements

  New references for high temperature measurements As a culmination of an eight-year research programme an international collaboration has developed robust reference fixed points, studied their sensitivity to impurities and external conditions and finally measured their melting transition temperature. This talk describes how 100+ measurements made by nine different NMIs have been combined to assign low-uncertainty thermodynamic temperatures to the melting transition of Re-C, Pt-C and Co-C metal-carbon eutectics. At the simplest level, these fixed-points will provide new temperature references for the calibration of pyrometers at temperatures above the freezing point of silver (1234.93 K) and will thus reduce the … Continue reading

New references for high temperature measurements

Summary of work reported for high temperature measurements from NPL As a culmination of an eight-year research programme an international collaboration has developed robust reference fixed points, studied their sensitivity to impurities and external conditions and finally measured their melting transition temperature. This talk describes how 100+ measurements made by nine different NMIs have been combined to assign low-uncertainty thermodynamic temperatures to the melting transition of Re-C, Pt-C and Co-C metal-carbon eutectics. At the simplest level, these fixed-points will provide new temperature references for the calibration of pyrometers at temperatures above the freezing point of silver (1234.93 K) and will … Continue reading

TI Temperature Measurement Videos

TI, or Texas Instruments, is one of the world’s most prolific and largest makers of temperature sensors. They make all kinds but their sensors are mostly in the form of Integrated Circuit semiconductors. TI also does an exceptional job in educating users how their devices work and how they can be interfaced and incorporated in measurement systems. Especially useful are the videos showing how some of their other integrated circuit modules can be used with external temperature sensors, like Thermocouples, RTDs and Thermistors. Here’s an example of an interesting one: Contactless Temperature Measurement Made Simple – TMP006 by Texas Instruments … Continue reading

Acoustic Gas Thermometry Review Article

Online  —  Acoustic gas thermometry (AGT) is not a very well known temperature measurement technique; several have been reported in the past. This featured review article in Metrologia (Acoustic gas thermometry M R Moldover et al 2014 Metrologia 51 R1) by six authors from six different  NMIs around the world provides a modern update on the technology and its significance in helping determine values of physical reference temperatures points on the International Temperature Scale of 1990 (ITS-90). Acoustic Gas Thermometry Authors: M R Moldover1, R M Gavioso2, J B Mehl3, L Pitre4, M de Podesta5 and J T Zhang6 Review … Continue reading

Why Noncontact Sensors are So Named

And their really big advantages At the risk of being insensitive by saying this sounds like a ‘Duh” moment let’s not. Let’s explore just what it means and why it is significant, especially in the case of temperature sensors. The fact is, noncontact temperatures sensors, and similar noncontact sensors for size and shape are so-called because they measure a certain property by not contacting the object itself. Aside from the obvious side benefits of not causing any changes to the object being measured, noncontact temperature sensors have some significant benefits and accompanying advantages over contact temperature sensors. As an aside, … Continue reading

Temperature Calibration & Metrology Web Seminar Archives

Fluke Calibration’s Focus on Basics – RTDs – Digital & IR (Infrared Radiation) Thermometers Online —  Fluke Calibration’s free online web seminars cover a wide range of calibration and temperature topics. More are scheduled monthly. To learn about upcoming events, check their web seminar page, or sign up for their e-news bulletins today. If you have missed out on one of their live web seminar events, you can view the recordings in their web seminar archives. Here’s a list of current ones along with links to them (as of 1 August 2013). They are mostly in English, but several are … Continue reading

Pyrometry (Continued) & Gas Temperature Measurement – Lecture 19

The Last Lecture in the 11 Lecture Sub-Series on Temperature Measurement. Also online at youtu.be/P9DAztywj58 and NPTEL at: nptel.iitm.ac.in/video.php?subjectId=112106138. Lecturers for these videos are Prof. Shunmugam M. S., Department of Mechanical Engineering , IIT Madras.(email: shun@iitm.ac.in) and.Prof. S.P. Venkateshan, Department of Mechanical Engineering , IIT Madras (email: spv@iitm.ac.in). Numbers after the lecture title indicate the length of the lecture in (hh:mm:ss) format. You can appreciate from the list and times shown, this is about a 50 hour course, equivalent to a substantial opportunity to learn the topics in significant depth. Lectures in this course: 50 – Syllabus: PDF. 1 – Introduction … Continue reading

Pyrometry or Radiation Thermometry (Continued) – Lecture 18

The Tenth Lecture in the 11 Lecture Sub-Series on Temperature Measurement. Also online at youtu.be/a9tawff4LuI and NPTEL at: nptel.iitm.ac.in/video.php?subjectId=112106138. Lecturers for these videos are Prof. Shunmugam M. S., Department of Mechanical Engineering , IIT Madras.(email: shun@iitm.ac.in) and.Prof. S.P. Venkateshan, Department of Mechanical Engineering , IIT Madras (email: spv@iitm.ac.in). Numbers after the lecture title indicate the length of the lecture in (hh:mm:ss) format. You can appreciate from the list and times shown, this is about a 50 hour course, equivalent to a substantial opportunity to learn the topics in significant depth. Lectures in this course: 50 – Syllabus: PDF. … Continue reading

Resistance Thermometry (Continued) (Thermistors) & Pyrometry – Lecture 17

The Ninth Lecture in the 11 Lecture Sub-Series on Temperature Measurement. Also online at youtu.be/7JsnhzojHo0 and NPTEL at: nptel.iitm.ac.in/video.php?subjectId=112106138. Lecturers for these videos are Prof. Shunmugam M. S., Department of Mechanical Engineering , IIT Madras.(email: shun@iitm.ac.in) and.Prof. S.P. Venkateshan, Department of Mechanical Engineering , IIT Madras (email: spv@iitm.ac.in). Numbers after the lecture title indicate the length of the lecture in (hh:mm:ss) format. You can appreciate from the list and times shown, this is about a 50 hour course, equivalent to a substantial opportunity to learn the topics in significant depth. Lectures in this course: 50 – Syllabus: PDF. … Continue reading