Inexpensive, easy-to-use fixed-point maintenance apparatus
Easy preprogrammed realization
Inexpensive fixed-point solution
Training takes a few hours
If the reason you don’t use fixed-point cells is because they’re too
expensive or too difficult to use, you haven’t heard of Fluke
Calibration's mini fixed-point apparatus.
The triple point of water (0.01 °C) is one of the most important
temperatures on the ITS-90. Unfortunately, realizing and maintaining
triple point of water cells hasn’t always been convenient or
cost-effective.
Because ITS-90 calibrations require frequent measurements at the
triple point of water, and because the triple point of water is often
used as a statistical check against the drift of a temperature
standard, it is important to be able to realize and maintain
well-constructed triple point of water cells easily.
The Fluke Calibration 9210 TPW Maintenance Apparatus provides
built-in programming for the simple supercool-and-shake realization
and maintenance of our 5901B Mini TPW Cell. Simply insert the cell,
enter the “freeze" mode through the front-panel buttons, have your
morning cup of coffee, and when the 9210 audibly alerts you,
remove the Mini TPW Cell and give it a shake to initiate freezing a
portion of the water. Re-insert the cell, change the program mode to
“maintain," and you’ve got 0.01 °C for the rest of the day with
uncertainty of only ±0.0005 °C.
Precision-machined thermal blocks can also be used to take
advantage of the excellent stability and uniformity of the 9210 for
performing comparison calibrations. Multi-hole and custom blocks are
available with 178 mm (7 in) depths.