Platinum resistive thermometer 568 series

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All the features you expect in world-class SPRTs • Drift rates as low as 0.0005 K • Proprietary gas mixture ensures high stability • Most experienced SPRT design team in the business Choosing the right platinum thermometer as your primary standard may be the most critical purchase decision in your lab. Unfortunately, other manufacturers are pretty secretive about how their SPRTs are made. They won’t tell you much more than you can already see by looking at one. Long-term reputation used to be a reliable indicator, but the leaders of a few decades ago have lost their original craftsmen and design scientists. There are only a few active SPRT design groups in the world today. So how do you know you’re making the best purchase? Self-proclaimed expertise shouldn’t convince you. You should expect some sound evidence that the company is qualified in the ongoing science of SPRT development. At Fluke Calibration we’ll tell you how we make an SPRT. We’ll let you talk to the people here who design, build, and calibrate SPRTs. Finally, when you buy one, if you don’t like it, we’ll take it back and return your money. Yes, they have all the features you would expect in a world-class SPRT. They have gold-plated spade lugs, a strain-relieved connection to the four-wire cable, convection prevention disks, the finest quartz glass available, delustered stems, and the purest platinum wire available. The purity of a thermometer’s platinum wire is critical to meeting ITS-90 requirements. Maintaining that purity over the life of the thermometer impacts long-term stability. The quartz glass tube of the SPRT should be properly sealed to prevent contamination of the platinum sensor.