ITS-90 Temperature standards

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The defining instruments of the ITS-90 (International Temperature Scale of 1990) are Standard Platinum Resistance Thermometers (SPRTs) and ITS-90 fixed-point cells. SPRTs are calibrated in fixed-point cells to provide the highest possible temperature accuracy. Primary standards offered by Fluke Calibration include: long-stem SPRTs; capsule SPRTs; triple point of water cells; metal fixed-point cells; maintenance baths and maintenance furnaces for fixed-point cells; standard resistors.

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5686-B Glass Capsule SPRT
Fluke Calibration's 5686 SPRT covers temperatures from –260 °C to 232 °C. It complies completely with ITS-90 & is small yet reliable & stable....
5698-25 Working Standard SPRT
5698-25 SPRT from Fluke Calibration meets ITS-90 SPRT guidelines, has a drift rate of 0.003 °C & covers a temperature range from –200 °C to 670 °C....
5699 High-Temperature Metal-Sheath SPRT
Fluke Calibration's 5699 SPRT has a protective sheathing material that allows use in calibration furnaces or calibration baths with high temperatures of up to 670 °C....
5901 Triple Point of Water Cells
5901 triple point water cells from Fluke Calibration are an easy-to-use and inexpensive standard with uncertainty better than ± 0.0001 °C....
5960A Triple Point of Argon System
Fluke Calibration 5960A calculates argon triple point using a reproducible process, produces a 30-hour temperature plateau & increases SPRT calibration efficiency....
ITS-90 Fixed-Point Cells
ITS-90 fixed-point cells from Fluke Calibration is constructed in ultra clean labs, using high-density, high-purity graphite crucibles containing metal samples with purity of at least 99.9999 %....
Mini Fixed-Point Cells
Mini fixed point cells from Fluke Calibration are the least expensive, easiest to use & eliminate the need for comparison calibrations. Request a quote today!...
6331/7341/7381 Deep-Well Compact Baths
Calibration baths from Fluke Calibration offer high stability, flexibility , and are a preferred choice of National Metrology Institutes. Contact us today for more information....
7312 Triple Point of Water Maintenance Bath
Maintain triple point of water cells for weeks with the Fluke Calibration 7312 bath. Offers high stability for fixed-point temperature calibrations....
9114, 9115A, 9116A Freeze-point furnaces
Fluke Calibration 9114/9115A/9116A offer highly accurate and stable temperature standards for ITS-90 fixed-point calibration....
9117 Annealing Furnace
9117 Annealing furnace from Fluke Calibration guards against contamination, anneals both SPRTs & HTPRTs & is fully programmable....
9230 Gallium Cell Maintenance Apparatus
Fluke Calibration 9230 Gallium Cell - Inexpensive & easy-to-use fixed-point maintenance apparatus. Request a quote today!...
9260 Mini Fixed-Point Cell Furnace
Fluke Calibration 9260 Mini Fixed Point Cell -Inexpensive & easy-to-use fixed-point maintenance apparatus. Request a quote today!...
7196B LN₂ Comparison Calibrator
7196 LN2 Comparison Calibrator from Fluke Calibration is simple to use and offers low-cost calibrations to –196°C. Request a quote today!...
742A Resistance Standards
742A Resistance Standards have excellent temperature stability that allows them to be used from 18°C to 28°C for resistance calibration. Request a quote....