Size-of-source effect sensitivities (SSE) in filter radiometers

An online accessible paper by:
M. R. Dury1, T. C. Arneil2, G. Machin1 and T. M. Goodman1

SSE image 1

Optical setup by NPL

1-National Physical Laboratory, Teddington, United Kingdom
2- University of Cambridge, Cambridge, UK
email: martin.dury@npl.co.uk

Introduction:

When performing high accuracy radiation thermometry, the size-of-source effect (SSE) of a filter radiometer can provide a significant contribution to the uncertainties associated with the measurements.

During the development of a new filter radiometer, the THermodynamic Optical Radiometer (THOR), which we designed specifically to measure the melting points of High Temperature Fixed Point (HTFP) cells, indirect SSE measurements were performed on a prototype instrument to aid selection of optical components and their optimum positions with the aim of minimising its SSE.

We performed tests to choose the objective lens, and to understand the effects of the collimating lens.

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FLIR A655sc thermal imaging camera success story

Thermal Imaging Assists USDA Water Management Program

Thermal Imaging Assists USDA Water Management

FLIR 655sc Assists USDA Water Management

Meer, Belgium — FLIR Systems has published a new application story that describes how the FLIR A655sc thermal imaging camera now provides an indispensable means of data collection to the USDA Water Management research program.

At the US Department of Agriculture (USDA), researchers are looking into ways for farmers to be more productive by using less water. They do this, among other things, by deliberately imposing stress on crops and monitoring the water stress.

The most established method for detecting crop water stress remotely is through the measurement of a crop’s surface or canopy temperature.

As the crop becomes water stressed, the leaves will start to curl and transpiration will decrease leading to an increase in leaf temperature. Continue reading

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Webcast on measuring fast moving objects with IR cameras

In the first part of the webcast, optris presents a test set-up with an optris PI160 infrared camera.

You will see how to reduce the play rate of a stored video sequence to make very fast moving objects visible in a frame-by-frame analysis.

Link to Part 1: Webcast on measuring fast moving objects with IR cameras Continue reading

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Infrared Optics Handling and Cleaning

Recommended Practice for Both Uncoated & Coated Materials

Screen Shot_Janos_LensesOnline  —  The Janos Technology website contains some very useful information about Infrared Optics.

Perhaps one of the most practical items is their webpage on handling and cleaning Infrared optics. We think it is very good!

“Optics can be easily damaged or contaminated from poor handling and incorrect cleaning methods.

Be sure to consider the following guidelines:” Continue reading

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Webcasts on Profibus Connection of Infrared Thermometers

By optris in Germany (Series available in both German and English)

Online (YouTube) — Short introduction for the four part webcast series on Profibus* connection of infrared thermometers, the optris models. Profibus considerations are a major network connection method in manufacturing and testing environments where a networked data logging system or control system is being used.

Link to Part 1 – (German) | Link to Part 1 – (English)

To see the rest of the series click on the links below.

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IR Temp Measurement in Plastics Thermoforming

With the Calex PyroMini

pyromini_300

PyroMini with optional touch screen interface

Leighton Buzzard,UK — The process of thermoforming a plastic sheet depends critically upon temperature.

Calex pyrometers have been used by leading manufacturers to control heating and cooling in thermoforming for more than 10 years, resulting in increased product quality, consistency and production rates, and a reduction in heating costs.

Heating

Forming temperatures typically range from 120 °C to 370 °C. Precise temperature control is required, and the high-performance PyroMini infrared temperature sensor is ideal. Continue reading

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Pilkington Float Glass Process

An Industrial Application for Infrared Thermometers & Imagers

The Pilkington Float Glass Process, with more than 170 plants worldwide today, uses many infrared Radiation Thermometers and, in some cases, Thermal Imagers for process monitoring and control.

The process was developed by the Pilkingon Brothers Ltd. organization in St Helens, Lancashire, UK.

In the 1970s they, in turn, contracted with Land Pyrometers Ltd. (now Land Instruments International Ltd.), in neighboring Sheffield,Yorkshire, UK, to provide specialized single spot radiation thermometers for some of the process’s unique measurements in the “Tin Bath” and Annealing Lehr. Continue reading

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QIRT 2012: Biomedical Applications


Biomedical Applications

The following 23 articles from the International Conference on Quantitative InfraRed Thermography are freely available for download from the QIRT website.

Links to articles related to “Breast Cancer” are not included due to the intense negative criticism the subject has received from some medical studies around the world. We are convinced from these and prior studies conducted in the past that this is not a medically proven application for infrared thermal imaging technology and that the appropriate venue for technical papers on it belong rightly in peer-reviewed medical literature.

Just click on the hot-linked article designators  (e.g. QIRT-2012-nnn) below.

QIRT-2012-115
Restoration of finger blood flow oscillations by means of thermal imaging
A.A. Sagaidachnyi, D.A. Usanov, A.V. Skripal and A.V. Fomin

QIRT-2012-119
Multimodal All Optical Technique for the Quantification of Dynamic Stress
V. Saxena

QIRT-2012-126
Portable, digital telethermocamera for monitoring total hip and knee replacement surgical site healing and the occurrence of septic complications.
C.L. Romanò, G. Manzi, M. Calamita and N. Logoluso Continue reading

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