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Steel Making

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

Alloying Elements
Commercial steels of even the simplest types are therefore p...

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Manganese
Manganese adds considerably to the tensile strength of steel,...

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...



Correction By Zero Adjustment






Category: PYROMETRY AND PYROMETERS

Many pyrometers are supplied with
a zero adjuster, by means of which the pointer can be set to any
actual cold-junction temperature. If the cold junction of the
thermo-couple is in a temperature of 100 deg.F., the pointer can be
set to this point on the scale, and the readings of the instrument
will be correct.





Next: Compensating Leads

Previous: Correction For Cold-junction Errors



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