為延長溫坪時間而設計

  • 良好的穩定性
  • 良好的垂直溫場
  • 良好的溫坪

對於固定點來說,復現保存裝置與固定點容器配套使用來提供固定點的溫度,而復現保存裝置的性能會直接影響固定點的性能及使用便利性等。

良好的穩定性

保存固定點容器需要高穩定性並具有嚴格的溫度梯度控制的儀器,以保證長時間的溫坪。所有福祿克保存裝置,包括計量爐和液體恆溫槽,都是使用福祿克專利的溫度控制器。這些控制器具有卓越的穩定性並實現了優異的溫度控制。福祿克復現保存裝置可以提供更長時間的溫坪和更小的溫度梯度。

良好的垂直溫場

對於金屬固定點容器,可選擇三個加熱區或熱管爐保存,從而保證了良好的垂直溫場。另外還可以選擇平衡塊放入爐中進行鉑電阻溫度計的退火或比較法校準。

良好的溫坪

溫坪的長度能反映爐子的穩定性和均勻性。福祿克提供了三種複現保存裝置,它們與固定點容器配合使用時能夠得到較長的溫坪。一般情況下,福祿克的複現保存裝置和固定點容器能夠建立20小時到40小時甚至更長的溫坪。

 

Designed for maximum-length plateaus

  • Designed to extend plateaus
  • High-stability OEM controllers, RS-232 included
  • External cooling coils

Several companies manufacture freeze-point furnaces. Most of these furnaces are of adequate theoretical design and of reasonable quality. Most are priced similarly. However, there is a difference that can’t be seen from specifications or price, and that’s how well the furnace performs with the freeze-point cells they’re designed to maintain.

Establishing and maintaining a freeze-point plateau is what these furnaces are supposed to be about. Nothing they do is more important than this performance issue.

Fluke Calibration makes three freeze-point furnaces that, when combined with Fluke freeze-point cells, produce the longest plateaus in the industry. A Fluke Calibration furnace and cell can establish plateaus that range from 24 to 40 hours or more.

Fixed-point furnaces can also be used for comparison calibrations and for annealing. In these processes, stability and uniformity are very important, and nothing speaks more about stability and uniformity than the length of the plateaus produced by the furnace.

All three of these furnaces have external cooling coils for circulation of tap water at less than 60 PSIG and approximately 0.4 GPM to reduce heat load to the lab. They also come with RS-232 ports and have equilibration blocks available for comparison calibrations. IEEE-488 interface packages are also available, if that’s your preference.

One of Fluke's three fixed-point furnace models will meet your needs. Remember, the length of the plateau is the best measure of a furnace’s performance. Call us for performance data on actual cell freezes and test data on furnace gradients.




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