By its very nature, infrared measures surface temperature, but most material properties of interest relate to internal (bulk) temperatures. For many materials, such as metals, the gradient between the surface and internal temperatures is small enough to ignore. For other materials, such as rubber products, the gradient can be quite large when the material is exposed to an ambient temperature that is much different from its bulk temperature.
The Heat Balance (HB) Series of IRt/c infrared thermocouples have the ability to measure the internal temperature of the target material, non-invasively, by employing a patented heat balance technique. A typical application in medical equipment is monitoring or controlling the temperature of fluid transported through disposable tubing when warming or cooling:
In a broad spectrum of medical procedures, infusing normothermic fluid is the key to better patient outcomes. That’s particularly true in trauma situations when quick delivery of blood products to patients is essential for their survival.
Tecan, founded in Switzerland in 1980, is a leading global provider of laboratory instruments and solutions. The company has manufacturing, research and development sites in Europe and North America and maintains a sales and service network in 52 countries.
„Infrared temperature measurement methods of production processes are limited to material surfaces, and thus have a serious limitation in thermal process monitoring, particularly when considering speed increases. To overcome this limitation, a heat balance equation is derived in which the material surface temperature data is combined with other non-contact temperature data to calculate the internal temperature of the product, which in turn is used to optimise control to increase speeds.“
Exergen IRt/c™ non-contact temperature sensors can push production line performance to record highs and give an instant boost in start-up speed. Dr. Pompei has derived a mathematical model to describe the thermal processes that allows you to maximize the speeds of these processes.
Exergen Global's micro IRt/c temperature sensors are being employed by Netherlands-based Plant Lighting B.V. in its research aimed at reducing the artificial energy required to cultivate Phalaenopsis orchids in greenhouses.
The ability of the measuring device to maintain its calibration under service conditions and over a long period of time is of fundamental interest in temperature control. The IRt/c is rated at less than 0.1°C repeatability and has no measurable long term calibration change
IRt/c’s are rated optically for their field-of-view by the actual dimensional equations describing their construction. However there are, in practice, some secondary effects which can influence performance, including optical scatter, unwanted reflections, atmospheric scatter, and others.
Measuring the temperature of bread and pastry dough while mixing is difficult at best with conventional contact thermocouple probes, due to breakage and possible contamination of the food. However, the temperature is quite important since too high a temperature will cause too much rise
Measuring the temperature of bread and pastry dough while mixing is important since too high a temperature will cause too much rise, resulting in holes in the baked product, and too low a temperature will not allow the dough to rise sufficiently, resulting in a baked product that is flat.
Tire temperature is of critical concern in automotive racing for two reasons: 1) Tire temperature directly affects the tire’s adhesion and wear characteristics. For example, as it takes lap after lap around an oval track, a race car’s tires will begin to build up excessive heat in those areas that grip the curves.
Chapmanville, West Virginia resident Lee Rayburn and his teammates have been involved in amateur stock car racing for more than two decades, at first competing in the US Legend Cars races. Two years ago, the team, known as Sniper Motorsport, shifted gears and moved to larger NASCAR Limited Late Model Stock Cars.
Exergen Global: Asphalt properties are particularly sensitive to temperature, and it is important that the asphalt is applied at the correct temperature in order to perform to its specifications.
In high volume plastic injection molding machinery, a molded part that does not clear the mold can cause serious problems, including a long down time to clean up or make repairs.
For forming plastics, radiant heat with an IRt/c is an excellent combination of heating method and control. They work extraordinarily well together, since both the heating and measuring occur right at the surface, where the plastic is located. The IRt/c reading is unaffected by reflections from the heater, since the spectral response of the 6 to 14 micron IRt/c lens filters out the shorter wavelengths of the radiant heater energy.
In the process of making PET bottles (polyethylene terephthalate) there is a fine line where the high output per bottle blowing machinery and the requested quality of the bottle come together. Taking into account that such machines must be able to produce a broad range of sizes and shapes and produce various quality bottles, it’s obvious that many variables must be kept under control during the process. One of the key parameters to control is the temperature.
Thermoforming is one of the oldest and most common methods of processing plastic materials. Vacuum formed products are all around us and play a major part in our daily lives.
Rt/c infrared thermocouples can accurately control the temperature of rotating and moving stainless steel heaters common in the packaging industry, without touching the heaters. Typically, uncoated stainless steel heaters are difficult for IR sensors to measure reliably because of reflected infrared signals that can change after after a heater surface is cleaned. The solution to this problem is simple: Choose an unused location on the heaters, as close as possible to the surface you wish to measure. Mechanically mount a surface that is reliable for the IRt/c to measure.
We like our food to be as fresh as can be. Vacuum-Sealing packaging can extend the shelf life of food products by preventing exposure to the natural atmosphere, thereby slowing down the microbial deterioration of the product. The vacuum also fixes the product within the pack, providing a degree of protection and reducing the packaging volume.
Case Study: NeuWave Medical Inc. develops devices that deliver energy to the human body to treat a variety of serious medical conditions. The company’s Certus® 140 Microwave Ablation System is the premier soft tissue ablation offering worldwide. It is a platform product with expanding capabilities that can be used in interventional or in surgical specialties, during both minimally invasive percutaneous procedures and in open surgery.
Help Your Customers Increase Safety, Reliability & Speed with Exergen’s IR Sensors For processes such as diagnostic procedures, skin treatments and medical interventions where blood or saline solutions are involved,
Exergen Global: When supplying blood to patients it is essential that the blood’s temperature is carefully warmed to 37°C to ensure patient safety and wellbeing. Blood must be warmed to this temperature prior to infusion, because, depending on its source, the blood can be at room temperature, refrigerated or any temperature in between. If the infused temperature is too low or too high, the risk of hypothermia or hyperthermia increases, presenting possible complications or even patient shock.
For high speed graphic processes, the limiting factor on the productivity of the equipment is usually the drying/curing time. To maximize the speed without quality loss, it is important to be able to determine quickly when the substrate is sufficiently dry or cured.
The ability of the measuring device to maintain its calibration under service conditions and over a long period of time is of fundamental interest in temperature control. The IRt/c is rated at less than 0.1°C repeatability and has no measurable long term calibration change, which makes it well suited for reliable temperature control.
One of the outstanding features of the IRt/c is its speed of response – 0.05 to 0.2 seconds. This attribute makes it possible to monitor the temperature of fast moving materials in production lines, and rapid heating and cooling.
With the low cost of the IRt/c.01 and its direct compatibility with inexpensive, widely available thermocouple input devices, powerful infrared scanning arrays can now be considered for applications in which thermal signatures are desired for process monitoring and control. Such applications include web drying, printing, laminating, paint curing, and any other thermal processing of moving material.
Exergen Global: Non-contact thermal sensors are remarkably diverse devices that can help ensure higher process speeds, more precise accuracies, tighter tolerances, and higher yields for a wide spectrum of manufacturing processes, including semiconductor production.
Exergen Global’s revolutionary solution codenamed “PEKO”, allows manufacturers to safely speed up industrial processes and position thermal sensors extremely close to measurement targets—both moves that significantly increase ambient temperature—while ensuring processing temperatures remain safely within specifications and emissivity is brought to as close as E=1.
Exergen Global today announced that its Micro IRt/c-HB infrared non-contact sensors are being used to measure blood product temperatures in the ThermaCor® 1200 Rapid Thermal Infuser designed and developed by Smisson-Cartledge Biomedical, LLC and manufactured by Sparton Medical.
Exergen Global today introduced the D501LN, a handheld certified infrared scanner that provides all the features found in Exergen’s DX501, with an extended nosepiece to enhance safety and ease-of-use.
Universell einsetzbare Temperatur-Sensoren bietet die Reihe Game Changer, die Exergen Global in Kooperation mit Novus Automation entwickelt hat.
Exergen Global, the award-winning thermal sensor solution provider, announced today that it has entered into a partnership with Multi IR, a global leader in infrared technologies based in Hangzhou, China.
Exergen Global, an award-winning thermal solutions provider, today announced that TomTom-Tools, a Swiss-based company that provides state of the art measurement tools for the cement industry, is employing Exergen’s micro IRt/c-K as part of a customized solution to help its cement manufacturing customers maintain ideal operating temperatures and increase production.