Measuring the surface temperature of a roller rotating at high speed, a sheet of paper, plastic or textile being drawn through a drying or curing process or a moving metal component is not always an easy task. Attaching a fixed temperature probe is very difficult if not impossible. The solution is non-contact measurement using an Infrared (IR) thermometer to measure the radiation from the object and generate an output signal which is a function of the temperature.
Interfaced to IR pyrometers from a number of makers, Eurotherm controllers can measure many materials with various emissivities at temperatures up to 3600°F.
Recent developments in the industry have resulted in an extensive range of low-cost Infrared Pyrometers. These novel units are self-powered and generate an output signal on two wires emulating a conventional thermocouple, albeit with a high source impedance. This high impedance is loaded by most controllers, causing significant measurement errors. Not so for the Series 2000 who's intrinsically high input impedance and passive sensor break detection measure the signal without degrading it. Linearization curves downloaded into the controller provide an accurate measurement throughout the pyrometer's range of 0°F - 1200°F. The user calibration facilities available in every Series 2000 controllers allow users or installers to optimize the temperature measurement on-site.
Eurotherm Controls has a close working relationship with pyrometer manufacturers and will work with them and users to provide the optimum combination of controller and non-contact measurement device.