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' THERMOPEN ' TEMPERATURE INDICATOR CRAYONS

 
TECHNICAL SPECIFICATION
' THERMOPEN ' TEMPERATURE INDICATOR CRAYONS
PRODUCT ADVANTAGES
Easy to use
Most Economical
Accurate
Can be used by skilled persons
Can be used where other methods are obsolete.
 
GENERAL DIRECTION FOR USE
 
Stroke work piece with proper THERMOPEN from time to time during heating. Below its temperature rating. the THERMOPEN leaves a dry chalk mark. When the rated temperature is reached the THERMOPENS leave a liquid smear. Alternatively the work piece can be marked with appropriate THERMOPEN before heating begins. When its stated temperature is reached the mark turns to a liquid smear.
 
 
 
USES
In welding, forging, heat treating, fabrication of metals, moulding of rubber and plastics, and generally for applications where the work piece is accessible.
 
RANGE
1. From 50°C to 200°C in about 10°C intervals.
2. From 200°C to 1000°C in about 30-50°C intervals.
3. From 1000°C to 1600°C in about 100°C intervals.
 
 
ACCURACY
± 1% of Rated Temperature
 
PACKING
one box of 6 crayons.
 
IMPORTANT
Temperature Indication is the appearance of the liquid smear and not a color change. Hence any color change be ignored. First appearance of liquid smear means rated temperature has been attained.
 
 
   
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