The Isotech ITS-90 Isothermal Towers are advanced Fixed-Point Calibration devices that offer a revolutionary approach to high-precision temperature standardisation. By combining a Fixed-Point Cell and a heat siphon in a single integrated device, these Isothermal Towers eliminate temperature fluctuations and improve stability during calibrations. This design, which incorporates patented technologies, enables laboratories to achieve extremely low uncertainties at a fraction of the cost of conventional metrology ovens.<\/p>\n
The Isothermal Towers are designed to exceed the most stringent international metrological standards. They fully comply with the specifications of CCT\/2000-13, the most detailed and demanding guidelines for fixed-point calibration. This means that laboratories using this technology can achieve the smallest possible measurement uncertainties.<\/p>\n
An important feature is the Immersion Compensator, which automatically compensates for the thermal conductivity of the thermometer being calibrated. This ensures a uniform temperature without the need for additional corrections. The unique Siphonic Cell combines a fixed-point cell with a heat pipe, resulting in rapid temperature stabilisation and a completely homogeneous temperature profile.<\/p>\n
The user-friendliness and robustness of the Isothermal Towers eliminate the need for specialised training. Unlike conventional quartz cells, which are fragile and difficult to handle, these devices are transportable and have no fragile parts.<\/p>\n
The Isothermal Towers can be set for melting and freezing plateaus of 24 hours or longer, enabling automatic and long-term calibrations. This makes it possible to provide laboratories with a stable temperature reference throughout the working day. For laboratories and accreditation institutions, the Towers offer an ideal intercomparison instrument. Because the cell, the equipment and the Immersion Compensator function as a single unit, the measurements are fully reproducible and free from uncertainties caused by separation of cell and oven.<\/p>\n
The Isothermal Towers are available for the following fixed points:<\/p>\n
> Indium (156.5985\u00b0C)<\/strong> The Isothermal Towers offer numerous advantages over conventional quartz cells and metrology furnaces. They are robust, easy to transport and have no fragile glass components. The integrated construction eliminates the uncertainty associated with separate cell and furnace configurations, resulting in more reliable results. The ability to purchase three Isothermal Towers for the price of one conventional fixed-point setup also makes this technology a cost-effective choice for laboratories that demand the highest accuracy.<\/p>\n Isotech ITS-90 Isothermal Towers are used worldwide in primary and secondary laboratories for the calibration of standard thermometers with the highest possible accuracy. Specific applications include:<\/p>\n > Calibration of standard platinum resistance thermometers (SPRTs)<\/strong> The Isotech ITS-90 Isothermal Towers offer a unique combination of high accuracy, simplicity and reliability. Thanks to their innovative design and advanced temperature stabilisation, they are among the most effective fixed-point standards on the market. Please contact us for more information or a customised quote.<\/p>\n","protected":false},"excerpt":{"rendered":"
\n> Tin (231.928\u00b0C)<\/strong>
\n> Zinc (419.527\u00b0C)<\/strong>
\n> Aluminium (660.323\u00b0C)<\/strong><\/p>\nTechnical Specifications<\/h3>\n
\n\n
\n Model<\/td>\n ITS-90 Point<\/td>\n Temperature<\/td>\n Metal Purity<\/td>\n Plateau Duration<\/td>\n UKAS Uncertainty (Premium)<\/td>\n UKAS Uncertainty (Standard)<\/td>\n Heating Time<\/td>\n Pocket Diameter<\/td>\n Immersion Depth<\/td>\n<\/tr>\n \n 490<\/td>\n Indium<\/td>\n 156,5985\u00b0C<\/td>\n 6N<\/td>\n Up to 30 hours<\/td>\n \u00b10,7mK<\/td>\n \u00b12mK<\/td>\n 2 hours<\/td>\n 8 mm<\/td>\n 290 mm<\/td>\n<\/tr>\n \n 491<\/td>\n Tin<\/td>\n 231,928\u00b0C<\/td>\n 6N<\/td>\n Up to 30 hours<\/td>\n \u00b10,8mK<\/td>\n \u00b12mK<\/td>\n 2 hours<\/td>\n 8 mm<\/td>\n 290 mm<\/td>\n<\/tr>\n \n 492<\/td>\n Zinc<\/td>\n 419,527\u00b0C<\/td>\n 6N<\/td>\n Up to 30 hours<\/td>\n \u00b11mK<\/td>\n \u00b12mK<\/td>\n 2 hours<\/td>\n 8 mm<\/td>\n 290 mm<\/td>\n<\/tr>\n \n 493<\/td>\n Aluminium<\/td>\n 660,323\u00b0C<\/td>\n 6N<\/td>\n Up to 30 hours<\/td>\n \u00b12mK<\/td>\n \u00b16mK<\/td>\n 2 hours<\/td>\n 8 mm<\/td>\n 290 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Advantages of the Isothermal Towers<\/h3>\n
Applications<\/h3>\n
\n> Research into phase transitions of materials<\/strong>
\n> Inter-laboratory comparisons and accreditation audits<\/strong>
\n> Continuous temperature standardisation in metrological institutions<\/strong>
\n> Automatic calibration cycles for long-term stability <\/strong><\/p>\nSummary<\/h3>\n
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