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SPHERICAL FURNACE CALIBRATION SPHERE
Model 877 Saturn Spherical furnace. Thermocouple Calibration Sphere from 100°C to 1300°C

Saturn 877 Thermocouple Calibration Sphere. Temperature range 100°C to 1300°C
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 center of the furnace is a solid cast ceramic sphere with 8 or 16 tubes, to be used for the thermocouples requiring calibration.
Model 877 Saturn Spherical 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 are 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 ±0.25°C and ±0.1°C at 1000°C.

Model 877 - SATURN Thermocouple Calibration Sphere
Thermocouple Calibration Sphere
  • Fast calibration of up to 14 thermocouples

  • Central zone of zero heat flux.

  • Inserted radially thermocouple 
    heads do not interfere.

  • Accuracy ±0.25°C at 1000°C

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 of 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 that have metal equalizing blocks.

Model No. 877-Saturn
Temperature Range 100°C to 1300°C

Number of
Calibration Points

8 as standard
16 to special requirements

Diameter of Sensors 4 x 6mm + 4 x 8mm
Depth of Immersion 180mm
Accuracy

±0.25°C to ±0.1°C at 1000°C
(using comparison techniques.)

Warm-Up Times* 1 hour to 700°C 3 hours to 1300°C
Stabilization Time* 1 hour to ±0.25°C
Communications

Supplied as standard with serial interface. PC adapter cable, and Cal NotePad

Power

3kw, 208-240VAC, 50/60Hz
3kw, 115VAC, 50/60Hz

Dimensions 425 mm Diameter
Weight 55.12 lbs (25 kg)

* These times may increase as the windings age or if the supply voltage is low.

Please email sales@hotektech.com or call 253-927-6186 if you are interested in a purchase, or
  need additional information.

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