Temperature Calibration

UKAS temperature calibration at Absolute Calibration is performed in a very well equipped Environmental Laboratory with a variety of fluid baths, a fluidised alumina bath and a high temperature furnace, all of which provide very stable isothermal environments for the temperature calibration of Platinum Resistance Thermometers and thermocouples using comparative techniques. Low temperatures, down to -90°C are achieved using an AMETEK JOFRA Advanced Temperature Calibrator - ATC-125B. The JOFRA ATC-125 ultra cooler features a unique free piston stirling cooler technology for optimum performance and superior temperature homogeneity throughout the block at very low temperatures. The JOFRA ATC-125 ultra cooler is the world's first temperature dry-block calibrator capable of reaching -90˚C. Absolute Calibration have wide experience in the temperature calibration of Kaye Intelligent Probes (Intelligent Resistance Temperature Devices - IRTD's). We can also re-programme Kaye Intelligent Probes as part of their calibration. We can provide UKAS temperature calibration and standard traceable temperature calibration and certification over the range:- -90 °C to 1200 °C with uncertainties as low as 0.01 °C As well as PRT's and Thermocouples we also provide UKAS temperature calibration of Dry block calibrators and standard traceable calibration of Infrared (blackbody) thermometers. UKAS Temperature Uncertainties Measured Quantity Best Measurement Uncertainty Resistance Thermometers  Triple point 0.01 °C 0.0030 °C Ice Point 0.00 °C 0.0050 °C -90 °C to -70 °C 0.1 °C -70 °C to 250 °C  0.010 °C 250 °C to 450 °C 0.030 °C 450 °C to 650 °C 0.055 °C Platinum Thermocouples 0 °C to 600° 1.0 °C 600 °C to 1100 °C 2.0 °C 1100 °C to 1200 °C 2.3 °C For thermocouples and dry block calibrators/baths, please take the link below to view our full UKAS Calibration schedule.