{"id":1870,"date":"2023-08-01T14:26:53","date_gmt":"2023-08-01T14:26:53","guid":{"rendered":"https:\/\/calibration.consulting\/product\/isotech-108462-copper-point-sprt-model\/"},"modified":"2025-11-05T15:01:53","modified_gmt":"2025-11-05T15:01:53","slug":"isotech-108462-copper-point-sprt-model","status":"publish","type":"product","link":"https:\/\/calibration.consulting\/en\/product\/isotech-108462-copper-point-sprt-model\/","title":{"rendered":"Isotech 108462 copper point SPRT model"},"content":{"rendered":"

The Isotech<\/a> Copper Point SPRT 108462 is a standard platinum resistance thermometer (SPRT), specially developed for measurements up to the Copper Point of 1084.62\u00b0C. This SPRT is a breakthrough in temperature metrology, as it enables measurements with higher accuracy compared to thermocouples in this temperature range.<\/p>\n

Traditionally, thermocouples are used for temperatures above the silver point (961.78\u00b0C), but at the copper point, the sensitivity of a Type R thermocouple is limited to 14 \u00b5V\/\u00b0C, making small temperature changes difficult to detect. The development of the 108462 SPRT now allows temperature changes at the copper freezing point to be determined with greater precision.<\/p>\n

Innovative Design for Maximum Stability<\/h3>\n

The 108462 SPRT combines more than 30 years of Isotech expertise in silver point SPRTs with innovative technologies. The instrument contains a synthetic sapphire mandrel, which optimally supports and stabilises the platinum winding.<\/p>\n

Because platinum is sensitive to atmospheric influences, Isotech has developed a solution in which the aluminium oxide (alumina) casing is filled with air and kept under slight pressure via a small air pump. This keeps the oxygen concentration around the winding constant, stabilising oxidation and maximising long-term stability. In addition, the four platinum wire connections are insulated with quartz glass and routed through four separate drill holes.<\/p>\n

Technical Specifications<\/h3>\n

\u2022 > Measuring range:<\/strong> 0\u00b0C to 1100\u00b0C
\n\u2022 > Nominal resistance<\/strong> at 0\u00b0C (Ro): 0.25 \u03a9
\n\u2022 > Length:<\/strong> 650 mm
\n\u2022 > Diameter:<\/strong> 7.5 mm
\n\u2022 > Sheath material:<\/strong> Aluminium oxide (alumina)
\n\u2022 > Mandrel material:<\/strong> Synthetic sapphire
\n\u2022 > Cable:<\/strong> 2.5 metres
\n\u2022 > Ionisation:<\/strong> +9V DC bias for more stable measurements<\/p>\n

Applications<\/h3>\n

The Isotech 108462 Copper Point SPRT is ideal for:<\/p>\n

\u2022\u00a0 > Primary and secondary temperature calibration laboratories<\/strong>
\n\u2022 > Research into phase transitions of copper at 1084.62\u00b0C<\/strong>
\n\u2022 >Replacement of thermocouples in high-temperature calibration procedures<\/strong>
\n\u2022 > Ring comparisons and accreditation processes<\/strong>
\n\u2022 > Use in ITS-90 fixed-point cells for reference measurements<\/strong><\/p>\n

The Isotech Copper Point SPRT is a groundbreaking instrument that helps scientists and metrologists perform ultra-precise temperature measurements. Thanks to its patented design, this SPRT delivers unrivalled reliability and performance in high-temperature calibration applications.<\/p>\n","protected":false},"excerpt":{"rendered":"

    \n
  • 0\u2103 tot 1100\u2103<\/li>\n
  • Ro = 0.25\u03a9<\/li>\n
  • Sapphire Mandrel<\/li>\n
  • Drukmantel<\/li>\n
  • Innovative design<\/li>\n<\/ul>\n

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