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Thermocouple Calibration Sphere, Model Saturn 877
Isotech, Spherical Thermocouple Calibration Furnace
 
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Spherical Designed Thermocouple Calibrator
100C to 1300C (2372F)
  • Accuracy: 0.25C at 1000C
  • Stability: Spherical design provides unmatched stability and uniformity
  • Uniformity: Central zone of zero heat flux
  • Used internationally by NMIs, thermocouple manufacturers, and the best calibration labs

Product Code: 877
 

   Product Description    Specifications
 
The Saturn spherical furnace comprises a number of concentric shells. The outer shell of spun metal is for containment and support. Inside this is a layer of ceramic fiber. Within the fiber is a ceramic spherical mantle containing the heater windings. In the middle of the furnace is a solid cast-ceramic sphere with 8 or 16 tubes, to be used for the thermocouples requiring calibration.

Isotech's calibration furnace is revolutionary from a number of aspects:

It is spherical, and its design ensures a central zone of constant temperature.

Thermocouples are inserted around the circumference of the furnace. When fully inserted, the measuring junctions sit within a few millimeters of each other at the center of the sphere.

Up to 15 thermocouples can be calibrated simultaneously. The accuracy is between 0.25C and 0.1C at 1000C.

Larger tube diameters will give larger gradients, as will larger numbers of tubes. The precision of this furnace has previously been achieved only by using heat pipes.

Because of the design, the price is only one half to one third that of a bath with comparable accuracy and much smaller-capacity calibration.

The use of newly developed modern ceramic materials has enabled high accuracy, low mass, and high stability to be obtained. The Saturn system will not contaminate your thermocouples, unlike some furnaces with metal equalizing blocks.
Literature
Saturn 877 Spherical Furnace Datasheet Saturn 877 Spherical Furnace Manual
Model 877 Saturn Datasheet Model 877 Saturn Manual