Fluke Calibration
7196B LN2 Comparison Calibrator
Lowest-cost calibration to -196°C without the complexity and cost of an argon triple-point cell
The nominal boiling point of nitrogen is –196°C at one atmosphere of pressure. The defining triple point of argon is –189.3442°C. While there is a difference between the nominal boiling point of nitrogen and the argon triple point, the difference can be corrected for mathematically, and an uncertainty of less than 2 mK from the actual argon triple point is achievable.
Fluke Calibration's LN2 Comparison Calibrators consist of a vacuum-sealed stainless steel Dewar Flask, a high-purity copper block, and a precision-fit lid. The dewar is filled with LN2 and the copper block is suspended in it; an SPRT is inserted into the block and a calibration is performed against your own calibrated SPRT. The 7196B-4 includes four 8-mm (0.32") wells. The 7196B-13 includes five 8-mm (0.32") wells and eight 6.35-mm (0.25") wells.
• Low-cost calibrations to –196°C
• Simple to use
• Uncertainty less than 2 mK
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