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Metrology Furnace, Model 465, 3 Zone Temperature Control
Isotech Model 465 Metrology Furnace (200°C to 1200°C)
 

Product Code: 465
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3 Zone Metrology Furnace - Isotech 465

Metrology Furnace for Wide Operating Ranges from 200°C to 1200°C

Widest Operating Range
Three Zone Control
Long Plateau Length

This more recent addition to our long-established range of metrology furnaces offers an alternative for those who prefer 3-Zone furnaces to Heat-Pipe technology. The three zones create a controlled volume of constant temperature within the furnace in which High-Temperature Fixed Points such as Aluminum, Silver and Copper can be frozen and melted. Because High-Temperature thermometers can be easily contaminated by metallic vapors, great care has been taken to eliminate the use of metals throughout the calibration volume. The cell holder is made of alumina.

A ceramic equalizing block is available comprising a closed ended tube, alumina tubes to house the sensors being compared, and alumina powder to act as an equalizing media

The sensor for the main controller is a mineral insulated type N thermocouple which has been found to be more table than the type R thermocouple. In addition two slave controllers compensate for any temperature gradient along the furnace by eliminating any temperature difference that they sense.

There is a cooling oil in the lid with connections to circulate tap water to keep the furnace lid cool protecting the SPRT and reducing heat load into the lab. A flow of 0.5 to 1 litre per minute is required at temperatures above 700°C

This 3-Zone Furnace can be used for the realizations of in, Zinc, Aluminium, Silver, Gold and Copper points, or with an optional equalizing block used for annealing or comparison calibration.

Model 465
Temperature Range 200°C to 1200°C
Uncertainty <1 to 2mk (with cells)
Control 0.1°C Resolution
Furnace Depth 500mm
Diameter 100mm
Communications Included as standard
Power 110VAC 50/60Hz 3kw
or 230VAC 50/60Hz 3kw
with internal transformer option
Dimensions H 960mm
W 600mm
D 560mm
Weight 115kg
Accessories
465-04-00 Cell holder assembly
465-02-06 Ceramic Equalizing Block

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