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Description
The 5698 Working Standard SPRT is a true SPRT. It meets the ITS-90
ratio requirements for SPRTs and includes a Hart designed,
completely strain-free platinum sensor. With 485-mm quartz sheath,
this 25-ohm SPRT covers a temperature range from -200°C
to 670°C. Long-term drift, which we define as the change in output
resistance at the triple point of water after 100 hours at 670°C,
is (after converting to temperature) less than 6mK-typically less
than 3mK.
The 5698 is the perfect companion to a Hart
Super-Thermometer such as the Model 1590, which reads 25-ohm SPRTs
to within 1mK at 0°C and includes a number of convenient features
for working with SPRTs. Requiring 1mA of excitation current, the
5698 can also be used easily with a Hart Black Stack, or even a
Chub-E4 Thermometer.
At Hart Scientific, they provide excellent
post-purchase support so you have the best possible ownership
experience. They also provide all the information before you
purchase including detailed performance specifications.
Maybe there is some art mixed with their
science. But that doesn't mean they keep secrets. Trust your Lab
Standards to Hart Scientific. |
