© Powered by SiteSpirit
Isothermal Technology Limited (Isotech) has introduced a new type of precision thermometer, which will be the new world standard for accuracy and stability. Designed for a wide range of highly accurate industrial and scientific calibration applications, the instrument uses a completely new measurement technique to achieve accuracies better than 0.1 parts per million (ppm) - equivalent to 0.0001°C - when used with a standards platinum resistance thermometer (SPRT).
The MicroK is believed to be the only instrument of its type in the world which will work to this precision with all three commonly used sensors, platinum resistance thermometers (PRTs), thermocouples and thermistors. In terms of long term stability, the MicroK achieves literally zero drift for resistance ratio measurements and an annual drift of only 3 ppm for voltage measurements. While utilising sophisticated software and specially developed circuitry, the MicroK is easy to use and has a comprehensive range of built-in features. It utilises on a 6.4-inch VGA colour touch screen as the main user interface, providing a number of graphically presented user options and controls. The underlying operating system is Microsoft Windows CE™ facilitating direct reading of temperature for all sensor types, data logging, export of data into Microsoft Excel™ applications and graphing facilities.
Measurement 'Best Practice' guidelines recommend the use of two separate reference thermometers when carrying out temperature calibrations. For that reason the designers of the MicroK have incorporated three channels, enabling users to achieve best practice without having to invest in additional multiplexers. The instrument also includes 'keep-warm' current sources to maintain the power in a PRT when it is not being measured. This feature effectively eliminates uncertainty resulting from power coefficients.