Fixed Pont Blackbody Furnace IR-R00 pages

PRACTICAL USE TYPE
FIXED POINT BLACK BODY FURNACE
The IR-R0 series is a fixed point black body furnace
for pratical use. Compact and selfcontained, it can
be used as a standard unit when comparing a
standard radiation thermometer with a production
type thermometer. It consists of an electrically
heated black-lead crucible, covered in high-purity
metal and the specific calibration value, which is
determined by the freezing point of the metal.
JCSS calibration test (national stanndard) applicable
Four values on the International Temperature Scale
(ITS-90) are available.

MODEL
IR-R0
Fixed points
Cu: Copper point (1084.62 )
Ag : Silver point (961.78 )
Al : Aluminium point (660.323
Zn : Zinc point (419.527 )

)

To simplify the task, an automatic operating system is
provided.

FEATURES
High Accuracy
Stable temperatures at each of the fixed points can
be maintained for 8 minutes, reproducibility of the
freezing point is within 0.1 , and the accuracy is
better than 0.3 .

Safety Factors
If for some reason, the Argon purge fails when the
furnace temperature is above 250 , an alarm
sounds to alert the operator. On the other hand, if the
sequence of operation has been completed and the
temperature is above 250 , then the Argon purge
will continue and will not turned off until the
temperature fall below this level. The furnace is
protected against the overheating by a high-limit
burnout controller, so if the temperature exceeds the
high-limit burnout setting or the thermocouple breaks,
then it will automatically shutdown the power and
alarm will sounds.

Long-term Stability
Less than 0.2 drift can be expected, during 200
repeats of fixed point realisation or over a period of
about 2 years.
Easy Operation
In automatic mode, Argon gas purge automatically
when the load switch is operated and the melting
point sequence occurs automatically. So no
adjustments are necessary.

Operating Condition Confirmation
Confirmation of the operating condition is provided
by a lamp display, together with a digital display of
the controller for the furnace inner temperature.

Low Power Consumption
Power consumption is about 800VA at 100V AC
(Single-phase). Temperature rise time is about 2 hour
for the copper point black body; each of the
remaining three points be selected by the operator if
required.

Lightweight and Compact
A compact housing containing the furnace body,
control system and power supply components
provides an easily moved system which can be
mounted in a small space.

PSE-607